JP7634070B2 - Fire-resistant resin composition, fire-resistant material, fire-resistant laminate, compartment penetration treatment structure, and compartment penetration treatment method - Google Patents

Description

The present invention relates to a fire-resistant resin composition, a fire-resistant material, a fire-resistant laminate, a compartment penetration treatment structure, and a compartment penetration treatment method for use in fire-resistant structures for buildings.

In buildings such as apartment buildings, office buildings, and schools, partitions such as walls are often provided with compartment penetrations to allow for the insertion of long objects such as cables and pipes. Compartment penetrations are required to have a fireproof structure (fireproof construction) to prevent the spread of fire to other compartments in the event of a fire in one compartment. Partitions are generally hollow walls consisting of two walls with a hollow space between them.

One method of making a compartment penetration part fireproof is to fill the gap between the long insert and the penetration hole with fireproof putty (see, for example, Patent Document 1).
Also, a method has been proposed of filling the gap between the insert and the through hole with an irregular filler such as a fireproof pack with fireproof putty packed inside the bag (see, for example, Patent Document 2). When using an irregular filler, it is common to use a product that is a kit of a fireproof pack or sleeve with a predetermined amount of fireproof putty packed inside the bag.
Furthermore, in order to facilitate the installation of fireproof putty or irregular filling material, a tubular member (sleeve) or a receiving portion for receiving the fireproof putty may be provided between the inside of the through hole of each wall portion and the insert.

Patent No. 6348320 Patent No. 6150933

However, it is difficult to make the density of the filling with fireproof putty uniform, and there is a problem that the finish varies depending on the worker. In addition, the penetration holes of the compartment penetration parts in buildings may have errors from the specified dimensions, and kit products for specified dimensions such as fireproof packs may not be able to properly seal the compartment penetration parts because the volume of the fireproof pack is constant. In other words, when using conventional fireproof materials such as fireproof putty or shapeless filling materials, the filling may be incomplete, and uniform fire resistance and fire extinguishing properties may not be obtained as a fireproof structure for the compartment penetration parts.
Furthermore, even when the compartment penetration part is properly sealed, the materials used to make the compartment penetration part a fireproof structure vary in thermal conductivity, and materials with insufficient thermal conductivity are unable to efficiently conduct the heat generated in the event of a fire, and do not exhibit fire resistance and fire extinguishing performance, meaning that uniform fire resistance and fire extinguishing performance cannot be obtained as a fireproof structure for the compartment penetration part.

The present invention aims to provide a fire-resistant resin composition, a fire-resistant material, a fire-resistant laminate, a compartment penetration treatment structure, and a compartment penetration treatment method that enable components used in the fire protection structure of a building to efficiently exhibit fire resistance and fire extinguishing performance and obtain uniform fire resistance and fire extinguishing properties.

The present invention relates to the following items [1] to [15].
[1] A fire-resistant resin composition used in a fire-resistant structure for a building, comprising at least one fire-resistant additive selected from the group consisting of a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material, a thermally conductive material, and a resin.
[2] The fire-resistant resin composition according to [1], wherein the content of the thermally conductive material per 100 parts by mass of the resin is 100 to 1,500 parts by mass.
[3] The fire-resistant resin composition according to [1] or [2], wherein the thermally conductive material is at least one selected from the group consisting of boron nitride and aluminum oxide.
[4] A fire-resistant material comprising the fire-resistant resin composition according to any one of [1] to [3].
[5] The fire-resistant material according to [4], which is in sheet form.
[6] The fireproof material according to [5], having a thickness of 0.5 to 10 mm.
[7] A fire-resistant laminate used in a fireproof structure for a building, comprising a fire-resistant resin layer containing at least one fire-resistant additive selected from the group consisting of a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material, and a resin, and a heat-conductive layer containing a heat-conductive material.
[8] The fire-resistant laminate according to [7], wherein the fire-resistant resin layer and the heat conductive layer are directly laminated to each other.
[9] The fire-resistant laminate described in [7] or [8], wherein the thermally conductive layer has at least one of a first thermally conductive layer containing the thermally conductive material and a resin, and a second thermally conductive layer essentially consisting of the thermally conductive material.
[10] The fire-resistant laminate according to any one of [7] to [9], which is in a sheet form.
[11] The fire-resistant laminate according to [10], having a thickness of 0.5 to 10 mm.
[12] A compartment penetration structure formed in a partition of a building and having a compartment penetration part through which a long penetrating body is inserted as a fireproof structure, wherein at least one of the fire-resistant materials described in [4] to [6] and the fire-resistant laminates described in [7] to [11] is provided in the compartment penetration part.
[13] The compartment penetration processing structure described in [12], wherein the fire-resistant resin layer of the fire-resistant laminate is arranged on the insert side.
[14] A compartment penetration structure described in [12] or [13], wherein the heat conductive layer of the fire-resistant laminate is not in contact with the insert.
[15] A compartment penetration treatment method for making a compartment penetration portion formed in a partition of a building and having a fireproof structure through which a long penetrating body is inserted, the method comprising the step of providing at least one of the fire-resistant materials described in [4] to [6] and the fire-resistant laminates described in [7] to [11] in the compartment penetration portion.

The present invention provides a fire-resistant resin composition, a fire-resistant material, a fire-resistant laminate, a compartment penetration treatment structure, and a compartment penetration treatment method that enable components used in the fire protection structure of a building to efficiently exhibit fire resistance and fire extinguishing performance and obtain uniform fire resistance and fire extinguishing properties.

1 is a cross-sectional view showing a compartment penetration processing structure according to a first embodiment of the present invention. FIG. 4 is a cross-sectional view showing a compartment penetration structure according to a second embodiment of the present invention. FIG. 11 is a cross-sectional view showing a compartment penetration processing structure according to a third embodiment of the present invention. FIG. 11 is a cross-sectional view showing a compartment penetration structure according to a fourth embodiment of the present invention. FIG. 13 is a cross-sectional view showing a compartment penetration structure according to a fifth embodiment of the present invention.

The present invention will be described in detail below.
[Fire-resistant resin composition]
The fire-resistant resin composition of the present invention contains at least one fire-resistant additive selected from the group consisting of a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material, a thermally conductive material, and a resin, and is used in fire-resistant structures for buildings.
The fire-resistant resin composition of the present invention contains a thermally conductive substance, and when heated by a fire in a building or the like, the composition can conduct heat and dissipate it, thereby suppressing ignition or extinguishing the fire if it does occur.

<Thermal conductive material>
The thermally conductive material is a material having thermal conductivity, specifically a material having a thermal conductivity of 5 W/m·K or more. Examples of the thermally conductive material contained in the fire-resistant resin composition include thermally conductive fillers, whiskers, chopped strands, etc., and among these, thermally conductive fillers are preferred. Examples of the thermally conductive material include graphite, metals, inorganic compounds, etc., and therefore examples of the thermally conductive filler include fillers such as graphite, metals, and inorganic compounds.
Examples of the metal include aluminum, silver, copper, magnesium, iron, chromium, nickel, titanium, zinc, tin, molybdenum, tungsten, and alloys containing any of these (such as stainless steel). Examples of the metal filler include silver, copper, aluminum, iron, and stainless steel.
Inorganic compounds refer to compounds other than graphite and metals, and specific examples of inorganic compounds include metal oxides such as aluminum oxide, magnesium oxide, calcium oxide, magnesium oxide, iron oxide, titanium oxide, tin oxide, antimony oxide, and zinc oxide, nitrides such as boron nitride, aluminum nitride, and silicon nitride, carbides such as silicon carbide, basic magnesium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate, and carbonate compounds such as barium carbonate (but other than calcium carbonate). In addition to these, silica, diatomaceous earth, barium sulfate, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, silica-based balloons, graphite, graphene, carbon black, carbon fibers, carbon balloons, charcoal powder, ferrite, potassium titanate, magnesium sulfate, lead zirconate titanate, zinc stearate, calcium stearate, aluminum borate, molybdenum sulfide, stainless steel fibers, slag fibers, and fly ash.

As the inorganic compound filler, magnesium oxide, aluminum oxide, zinc oxide, and boron nitride are preferable, and boron nitride and aluminum oxide, which have high thermal conductivity and are versatile, are more preferable.
From the viewpoint of making it easier to improve thermal conductivity, it is more preferable that the boron nitride be in the form of agglomerated particles, which are secondary particles formed by agglomerating primary particles of boron nitride, for example, agglomerated particles formed by agglomerating scaly primary particles.
The thermally conductive material may be used alone or in combination of two or more kinds. The thermally conductive material may be surface-treated to improve adhesion to the resin and processability.

The content of the thermally conductive material in the fire-resistant resin composition is preferably 100 to 1,500 parts by mass, more preferably 150 to 1,400 parts by mass, even more preferably 200 to 1,300 parts by mass, and even more preferably 250 to 1,200 parts by mass, per 100 parts by mass of resin. By having the content of the thermally conductive material within the above range, it becomes easier to improve thermal conductivity.

The average particle size of the thermally conductive filler as the thermally conductive substance is preferably from 0.1 to 100 μm, more preferably from 0.3 to 50 μm, and even more preferably from 0.5 to 25 μm.
The average particle size of the thermally conductive material is the median diameter (D50) measured by a laser diffraction/scattering type particle size distribution measuring device.

The density of the thermally conductive filler as the thermally conductive substance is preferably 2.0 to 8.0 g/cm ³ , more preferably 2.0 to 6.0 g/cm ³ , and even more preferably 2.0 to 5.0 g/cm ³ .
The thermal conductivity of the thermally conductive filler as a thermally conductive substance is preferably 5 W/m·K or more, more preferably 10 W/m·K or more, and although there is no particular upper limit, it is usually 2,000 W/m·K or less.
The shape of the thermally conductive filler as a thermally conductive substance is not particularly limited, and may be any shape such as a spherical shape, a hollow shape, a plate shape, a scale shape, a needle shape, etc., or different shapes may be mixed. It may also be an aggregated particle, which is a secondary particle formed by aggregating primary particles.

<Resin>
Examples of the resin in the present invention include thermoplastic resins, thermosetting resins, and elastomer resins.

Examples of thermoplastic resins include polyolefin resins, polyester resins such as polyethylene terephthalate, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, polyvinyl acetal resins, polyvinyl alcohol resins, polycarbonate resins, polyphenylene ether resins, acrylic resins, polyamide resins, polyvinyl chloride resins (PVC), novolac resins, polyurethane resins, and synthetic resins such as polyisobutylene.

Examples of thermosetting resins include synthetic resins such as epoxy resins, urethane resins, phenolic resins, urea resins, melamine resins, unsaturated polyester resins, and polyimides.

Examples of the elastomer resin include acrylonitrile butadiene rubber (NBR), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber, natural rubber, polybutadiene rubber, polyisoprene rubber, styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, hydrogenated styrene-isoprene block copolymer, and hydrogenated styrene-isoprene-styrene block copolymer.
In the present invention, these resins may be used alone or in combination of two or more.

When the fire-resistant resin composition is used as, for example, a fire-resistant sheet as described later, the resin is preferably at least one selected from polyvinyl chloride resin, polyolefin resin, polyvinyl acetal resin, acrylic resin, and epoxy resin. Among these, polyvinyl chloride resin and polyolefin resin are preferred from the viewpoint of ensuring moldability by extrusion molding.
Furthermore, from the viewpoint of easily ensuring moldability and mechanical strength such as tensile strength even when a relatively large amount of additives such as thermally conductive substances are blended, at least one selected from polyvinyl acetal resins and acrylic resins is more preferable, and polyvinyl acetal resins are even more preferable.

The melt flow rate of the thermoplastic resin such as polyvinyl chloride resin and polyolefin resin is preferably 1.0 g/10 min or more. When the melt flow rate of the thermoplastic resin is 1.0 g/10 min or more, the dispersibility of the thermally expandable layered inorganic material, and further the flame retardant and heat absorbing agent described later, becomes good, and even if these are blended in a large amount, the sheet moldability in extrusion molding or the like can be maintained well. The melt flow rate is more preferably 2.4 g/10 min or more, more preferably 10 g/10 min or more, and even more preferably 20 g/10 min or more. By making the melt flow rate equal to or higher than these lower limits, the dispersibility of the thermally expandable layered inorganic material, the flame retardant, the heat absorbing agent, etc. is improved, and it becomes easier to blend them in a larger amount.
The melt flow rate of the thermoplastic resin is preferably 40 g/10 min or less, and more preferably 35 g/10 min or less.
The melt flow rate was measured in accordance with JIS K 7210-2:1999 under conditions of 190° C. and a load of 2.16 kg.

<Polyvinyl chloride resin>
The polyvinyl chloride resin may be a vinyl chloride homopolymer or a vinyl chloride copolymer, which is a copolymer of vinyl chloride and a monomer having an unsaturated bond copolymerizable with vinyl chloride and contains 50% by mass or more of a constituent unit derived from vinyl chloride.
Examples of monomers having an unsaturated bond copolymerizable with vinyl chloride include vinyl esters such as vinyl acetate and vinyl propionate, acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, and other acrylic acid esters, methyl methacrylate, ethyl methacrylate, and other methacrylic acid esters, olefins such as ethylene and propylene, aromatic vinyls such as acrylonitrile and styrene, and vinylidene chloride.
The polyvinyl chloride resin may be a polychlorinated vinyl chloride resin obtained by chlorinating a vinyl chloride homopolymer or a vinyl chloride copolymer.
The polyvinyl chloride resin may be used alone or in combination of two or more of the above-mentioned resins.

<Polyolefin resin>
Examples of polyolefin resins include polypropylene resins, polyethylene resins, poly(1-)butene resins, polypentene resins, and ethylene-vinyl acetate copolymer (EVA) resins. Of these, ethylene-vinyl acetate copolymer (EVA) resins are preferred.
The ethylene-vinyl acetate copolymer resin may be a non-crosslinked ethylene-vinyl acetate copolymer resin or a high-temperature crosslinked ethylene-vinyl acetate copolymer resin. In addition, the ethylene-vinyl acetate copolymer resin may be a modified ethylene-vinyl acetate resin such as a saponified ethylene-vinyl acetate copolymer or a hydrolyzate of ethylene-vinyl acetate.
The ethylene-vinyl acetate copolymer resin preferably has a vinyl acetate content of 10 to 50% by mass, more preferably 25 to 45% by mass, as measured in accordance with JIS K 6730:1995 "Testing methods for ethylene-vinyl acetate resins". By making the vinyl acetate content equal to or greater than these lower limits, adhesion to additives such as thermally expandable layered inorganic materials is enhanced. In addition, by making the vinyl acetate content equal to or less than these upper limits, mechanical strength such as breaking strength of the fire-resistant resin layer is improved.

<Polyvinyl acetal resin>
The polyvinyl acetal resin is not particularly limited as long as it is a polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol with an aldehyde, but polyvinyl butyral resin (PVB) is preferred. By using polyvinyl butyral resin, it is possible to increase the mechanical strength even when the amount of resin in the fire-resistant resin composition is relatively small. Therefore, even if the thickness of the product made of the fire-resistant resin composition is reduced, a certain level of mechanical strength can be ensured.
The amount of hydroxyl groups in the polyvinyl acetal resin is preferably 20 to 40 mol%. By making the amount of hydroxyl groups 20 mol% or more, the polarity of the polyvinyl acetal resin is increased, the adhesive strength to thermally expandable layered inorganic materials, flame retardants, adsorbents, etc. is strengthened, and the mechanical strength of the fire-resistant material made of the fire-resistant resin composition is easily improved. In addition, by making the amount of hydroxyl groups 40 mol% or less, the fire-resistant material made of the fire-resistant resin composition is prevented from becoming too hard and reducing mechanical strength such as tensile strength. The amount of hydroxyl groups is more preferably 22 mol% or more. In addition, the amount of hydroxyl groups is more preferably 37 mol% or less, even more preferably 35 mol% or less, and even more preferably 33 mol% or less.

The degree of acetalization of the polyvinyl acetal resin is preferably 40 to 80 mol%. By setting the degree of acetalization within the above range, the amount of hydroxyl groups is set within a desired range, and the mechanical strength of the product of the fire-resistant resin composition is easily improved. The degree of acetalization is more preferably 55 mol% or more, even more preferably 65 mol% or more, even more preferably 67 mol% or more, and more preferably 76 mol% or less.
The amount of acetyl groups in the polyvinyl acetal resin is preferably 0.1 to 30 mol%. When the amount of acetyl groups is within this range, the moisture resistance is excellent, and the amount of hydroxyl groups is within the desired range, so that the mechanical strength of the product of the fire-resistant resin composition is easily improved. From these viewpoints, the amount of acetyl groups is more preferably 0.2 mol% or more, even more preferably 0.5 mol% or more, and more preferably 15 mol% or less, even more preferably 7 mol% or less.
The degree of acetalization, the amount of hydroxyl groups, and the amount of acetyl groups can be measured and calculated, for example, by a method in accordance with JIS K 6728:1977 "Testing methods for polyvinyl butyral".

The degree of polymerization of the polyvinyl acetal resin is preferably 200 to 3,000. By setting the degree of polymerization within this range, it is possible to appropriately disperse the thermally expandable layered inorganic material, the flame retardant, the adsorbent, and the like in the fire-resistant resin composition. The degree of polymerization is more preferably 250 or more, and further preferably 300 or more.
When the degree of polymerization of the polyvinyl acetal resin is reduced, the viscosity is also reduced, making it easier to disperse the thermally expandable layered inorganic material, the flame retardant, the adsorbent, etc. in the fire-resistant resin composition, and improving the mechanical strength of the product of the fire-resistant resin composition. From such a viewpoint, the degree of polymerization of the polyvinyl acetal resin is more preferably 1,500 or less, further preferably 1,000 or less, and further more preferably 900 or less.
The degree of polymerization of the polyvinyl acetal resin refers to a viscosity average degree of polymerization measured based on the method described in JIS K 6728:1977.

The 10% by mass ethanol/toluene viscosity of the polyvinyl acetal resin is preferably 5 mPa·s or more, more preferably 10 mPa·s or more, and even more preferably 15 mPa·s or more. The 10% by mass ethanol/toluene viscosity is preferably 500 mPa·s or less, more preferably 300 mPa·s or less, and even more preferably 200 mPa·s or less. By setting the 10% by mass ethanol/toluene viscosity of the polyvinyl acetal resin as described above, it becomes easier to disperse the thermally expandable layered inorganic material, the flame retardant, the adsorbent, etc. in the fire-resistant resin composition, and the mechanical strength of the fire-resistant material made of the fire-resistant resin composition is improved.
The 10% by mass ethanol/toluene viscosity is a value measured as follows: 150 ml of an ethanol/toluene (mass ratio 1:1) mixed solvent is placed in an Erlenmeyer flask, a weighed sample is added thereto, the resin concentration is adjusted to 10 wt%, and the solution is dissolved by shaking in a thermostatic chamber at 20° C. The solution is kept at 20° C. and the viscosity is measured using a BM type viscometer, so that the 10% by mass ethanol/toluene viscosity can be obtained.

The aldehyde is not particularly limited, but generally, an aldehyde having 1 to 10 carbon atoms is preferably used. The aldehyde having 1 to 10 carbon atoms is not particularly limited, and examples thereof include n-butylaldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, n-nonylaldehyde, n-decylaldehyde, formaldehyde, acetaldehyde, and benzaldehyde. Among these, n-butylaldehyde, n-hexylaldehyde, and n-valeraldehyde are preferred, and n-butylaldehyde is more preferred. These aldehydes may be used alone or in combination of two or more.

Acrylic resin
The acrylic resin is, for example, a polymer of a monomer component containing a (meth)acrylic acid alkyl ester monomer. In this specification, "(meth)acrylic acid alkyl ester" means "acrylic acid alkyl ester or methacrylic acid alkyl ester". Other similar terms are the same.
The (meth)acrylic acid alkyl ester monomer in the present invention is an ester of (meth)acrylic acid and an aliphatic alcohol, and the number of carbon atoms in the alkyl group of the aliphatic alcohol is, for example, 1 to 18, preferably 1 to 14, more preferably 1 to 10, and even more preferably 1 to 8.

Specific examples of the (meth)acrylic acid alkyl ester monomer include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, t-butyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate, undecyl (meth)acrylate, dodecyl (meth)acrylate, tridecyl (meth)acrylate, and tetradecyl (meth)acrylate.
The (meth)acrylic acid alkyl ester monomers may be used alone or in combination of two or more kinds.

Furthermore, the monomer component for obtaining the acrylic resin may contain a polar group-containing monomer in addition to the above-mentioned (meth)acrylic acid alkyl ester monomer.
Examples of the polar group-containing monomer include carboxylic acids containing a vinyl group, such as (meth)acrylic acid and itaconic acid; vinyl monomers having a hydroxyl group, such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, caprolactone-modified (meth)acrylate, polyoxyethylene (meth)acrylate, and polyoxypropylene (meth)acrylate; and nitrogen-containing vinyl monomers, such as (meth)acrylonitrile, N-vinylpyrrolidone, N-vinylcaprolactam, N-vinyllaurylolactam, (meth)acryloylmorpholine, (meth)acrylamide, dimethyl(meth)acrylamide, N-methylol(meth)acrylamide, N-butoxymethyl(meth)acrylamide, and dimethylaminomethyl(meth)acrylate.

The glass transition temperature (Tg) of the acrylic resin is preferably 5 to 80° C. By setting the glass transition temperature (Tg) within this range, it is possible to impart a certain level of mechanical strength to the product of the fire-resistant resin composition while improving moldability, flexibility, etc. From these viewpoints, the glass transition temperature (Tg) of the acrylic resin is preferably 15 to 70° C., and more preferably 25 to 60° C. The glass transition temperature (Tg) of the acrylic resin can be adjusted by appropriately selecting the type and amount of the monomer component used.
The glass transition temperature (Tg) of the acrylic resin can be measured, for example, by a differential scanning calorimeter (DSC).

As the acrylic resin, a polymer of a (meth)acrylic acid alkyl ester monomer is preferred. Specifically, a polymer of a (meth)acrylic acid alkyl ester monomer having an alkyl group with 1 to 14 carbon atoms is preferred, a polymer of a (meth)acrylic acid alkyl ester monomer having an alkyl group with 1 to 10 carbon atoms is more preferred, and a polymer of a (meth)acrylic acid alkyl ester monomer having an alkyl group with 1 to 8 carbon atoms is even more preferred. The acrylic resin may be a homopolymer of a (meth)acrylic acid alkyl ester monomer, or a copolymer of two or more kinds of (meth)acrylic acid alkyl ester monomers. Specific examples of suitable acrylic resins include a homopolymer of isobutyl methacrylate and a copolymer of isobutyl methacrylate and methyl methacrylate. The acrylic resin may be used alone or in combination of two or more kinds.

The weight average molecular weight of the acrylic resin is preferably 10,000 to 300,000 from the viewpoint of being able to appropriately disperse thermally expandable layered inorganic materials, flame retardants, adsorbents, etc. in the fire-resistant resin composition and improving the mechanical strength of the fire-resistant material made of the fire-resistant resin composition. From these viewpoints, the weight average molecular weight of the acrylic resin is more preferably 30,000 to 250,000, and even more preferably 60,000 to 200,000. The weight average molecular weight of the acrylic resin is the weight average molecular weight in terms of standard polystyrene measured by gel permeation chromatography (GPC). Examples of columns for measuring the weight average molecular weight by the GPC method include Shodex LF-804 (manufactured by Showa Denko KK).

《Epoxy resin》
The epoxy resin used in the present invention is not particularly limited, but may be, for example, an epoxy compound alone, or a compound consisting of an epoxy compound as a main component and a curing agent. The epoxy compound is a compound having an epoxy group, and specifically, glycidyl ether type and glycidyl ester type are exemplified. The glycidyl ether type may be bifunctional or may be trifunctional or more polyfunctional. The same applies to the glycidyl ester type. The epoxy compound may contain a monofunctional compound in order to adjust the degree of crosslinking. Among these, the bifunctional glycidyl ether type is preferred.

Examples of the bifunctional glycidyl ether type epoxy compounds include alkylene glycol types such as polyethylene glycol type and polypropylene glycol type, neopentyl glycol type, 1,6-hexanediol type, and aliphatic epoxy compounds such as hydrogenated bisphenol A type. Further examples include aromatic epoxy compounds containing aromatic rings such as bisphenol A type, bisphenol F type, bisphenol AD type, ethylene oxide-bisphenol A type, and propylene oxide-bisphenol A type. Among these, aromatic epoxy compounds such as bisphenol A type and bisphenol F type are preferred.

Examples of the glycidyl ester type epoxy compound include hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, and p-oxybenzoic acid type epoxy compounds.
Examples of trifunctional or higher functional glycidyl ether type epoxy compounds include phenol novolac type, orthocresol novolac type, DPP novolac type, and dicyclopentadiene-phenol type.
These epoxy compounds may be used alone or in combination of two or more kinds.

As the curing agent, a polyaddition type or catalytic type is used. Examples of the polyaddition type curing agent include polyamine-based curing agents, acid anhydride-based curing agents, polyphenol-based curing agents, polymercaptan, etc. Examples of the catalytic type curing agent include tertiary amines, imidazoles, Lewis acid complexes, etc. These curing agents may be used alone or in combination of two or more types.

When the fire-resistant resin composition is used, for example, as a fire-resistant putty as described below, the resin may be any resin that is conventionally used in fire-resistant putties, and it is preferable to use, for example, polyester resin, polybutene resin, epoxy resin, acrylic resin, liquid hydrocarbon resin, or synthetic rubber.

The resin content in the fire-resistant resin composition is, for example, 1 to 90% by mass, preferably 2 to 85% by mass, and more preferably 3 to 80% by mass, based on the solid content of the fire-resistant resin composition. If it is equal to or greater than these lower limits, the dispersibility of fire-resistant additives and the like in the fire-resistant resin composition is improved, and the mechanical strength and moldability of the fire-resistant material made of the fire-resistant resin composition, such as tensile strength, tend to be high. If it is equal to or less than the upper limit, the fire resistance and fire extinguishing performance of the fire-resistant material made of the fire-resistant resin composition tend to be improved. The solid content of the fire-resistant resin composition refers to the content of the fire-resistant resin composition excluding the volatile components that volatilize during the process of producing the fire-resistant material, and when the fire-resistant resin composition is diluted with a solvent, it refers to the amount of the fire-resistant resin composition excluding the amount of the solvent.

<Fire-resistant additives>
In the present invention, the fire-resistant additive is one or more selected from a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material. The fire-resistant additive has fire resistance and exhibits fire extinguishing performance when a fire occurs. The fire-resistant additive is dispersed in the resin in the fire-resistant resin composition and is held by the resin.
The fire-resistant additive may be one of the three components of the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material, or two of these components may be used in combination. That is, the flame retardant and the heat absorbing agent may be used in combination, the flame retardant and the thermally expandable layered inorganic material may be used in combination, or the heat absorbing agent and the thermally expandable layered inorganic material may be used in combination. Furthermore, all of the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material may be used.

The content of the fire-resistant additive in the fire-resistant resin composition is preferably 50 to 2,500 parts by mass, more preferably 100 to 2,300 parts by mass, even more preferably 150 to 2,100 parts by mass, and even more preferably 200 to 1,900 parts by mass, per 100 parts by mass of resin. By making the content of the fire-resistant additive equal to or greater than the above lower limit, it is possible to impart appropriate fire resistance and fire extinguishing performance to the fire-resistant material made of the fire-resistant resin composition. In addition, by making the content of the fire-resistant additive equal to or less than the above upper limit, it is possible to contain a certain proportion or more of resin in the fire-resistant resin composition, so that it is possible to appropriately disperse the fire-resistant additive in the resin of the fire-resistant material made of the fire-resistant resin composition, resulting in good moldability.

Flame retardants
Examples of the flame retardant in the present invention include phosphorus compounds. Examples of the phosphorus compounds include lower phosphates, polyphosphates, melamine phosphorus compounds, red phosphorus, condensed phosphate esters, halogen-containing phosphate esters, halogen-containing condensed phosphate esters, and phosphorus compounds represented by the general formula (1) described below. Examples of the phosphorus compounds include trimethyl phosphate, triethyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl di-2,6-xylenyl phosphate, tris(chloropropyl)phosphate, and tris(tribromoneopentyl)phosphate. By using these phosphorus compounds as flame retardants, appropriate fire resistance and fire extinguishing performance can be obtained. The flame retardants may be used alone or in combination of two or more.

<Low phosphate>
The lower phosphate refers to a salt of inorganic phosphoric acid that is not condensed, i.e., not polymerized, among salts of inorganic phosphoric acid, and has one phosphorus atom in one molecule of inorganic phosphoric acid. The inorganic phosphoric acid is not limited to phosphoric acid (orthophosphoric acid), but may be metaphosphoric acid, phosphorous acid, hypophosphorous acid, etc. The phosphate may be any of primary phosphate, secondary phosphate, and tertiary phosphate.
Examples of the salt include alkali metal salts such as lithium salt, sodium salt, and potassium salt, alkaline earth metal salts such as magnesium salt, calcium salt, strontium salt, and barium salt, salts of metals in Group 3B of the Periodic Table such as aluminum salt, and transition metal salts such as titanium salt, manganese salt, iron salt, nickel salt, copper salt, zinc salt, vanadium salt, chromium salt, molybdenum salt, and tungsten salt. Also included are ammonium salts, amine salts, for example, salts of guanidine salts or triazine-based compounds. Among these, metal salts are preferred, and aluminum salts are more preferred. In this specification, salts of melamine-based compounds are defined as melamine-based phosphorus compounds described later.

Specific examples of metal salts of lower phosphoric acids include aluminum monophosphate, sodium monophosphate, potassium monophosphate, calcium monophosphate, zinc monophosphate, aluminum diphosphate, sodium diphosphate, potassium diphosphate, calcium diphosphate, zinc diphosphate, aluminum triphosphate, sodium triphosphate, potassium triphosphate, calcium triphosphate, zinc triphosphate, aluminum phosphite, sodium phosphite, potassium phosphite, calcium phosphite, zinc phosphite, aluminum hypophosphite, sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, zinc hypophosphite, aluminum metaphosphate, sodium metaphosphate, potassium metaphosphate, calcium metaphosphate, zinc metaphosphate, etc. Among these, aluminum phosphate and aluminum phosphite are preferred.

<Polyphosphate>
Examples of polyphosphates include ammonium polyphosphates such as ammonium polyphosphate, melamine-modified ammonium polyphosphate, piperazine polyphosphate, and ammonium amide polyphosphate, and metal polyphosphates such as aluminum polyphosphate. Among these, ammonium polyphosphate is preferred from the standpoints of fire resistance, safety, cost, ease of handling, etc.

<Melamine-based phosphorus compounds>
Examples of the melamine-based phosphorus compounds include salts of melamine or melamine derivatives such as melamine, melem, and melon. Examples of the salts of melamine or melamine derivatives include melamine polyphosphate, melamine pyrophosphate, melamine orthophosphate, melamine-melam-melem polyphosphate, melamine polymetaphosphate, organic melamine phosphonate, and organic melamine phosphinate. Among these, polyphosphates of melamine-based compounds such as melamine polyphosphate, melamine-melam-melem polyphosphate, and the like are preferred.

<Condensed phosphate ester>
Examples of the condensed phosphate ester include trialkyl polyphosphate, resorcinol polyphenyl phosphate, bisphenol A polycresyl phosphate, resorcinol poly(di-2,6-xylyl) phosphate, hydroquinone poly(2,6-xylyl) phosphate, and condensates thereof.
Examples of halogen-containing condensed phosphate esters include compounds in which the above-mentioned condensed phosphate esters are partially substituted with chlorine atoms. Examples of halogen-containing phosphate esters include chloroalkyl phosphate esters such as tris(β-chloropropyl)phosphate (TMCPP).

The compound represented by the general formula (1) is as follows:
In formula (1), ^R1 and ^R3 are the same or different and represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. ^R2 represents a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or an aryloxy group having 6 to 16 carbon atoms.
Examples of the compound represented by the above chemical formula include methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, 2-methylpropylphosphonic acid, t-butylphosphonic acid, 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, phenylphosphinic acid, diethylphenylphosphinic acid, diphenylphosphinic acid, and bis(4-methoxyphenyl)phosphinic acid.
The above phosphorus compounds may be used alone or in combination of two or more.

The phosphorus compound may be a phosphorus compound that has been surface-treated with a silane compound. By using a phosphorus compound that has been surface-treated with a silane compound, the viscosity of the fire-resistant resin composition can be reduced, and the moldability of the fire-resistant resin composition can be improved.
Of the above-mentioned phosphorus compounds, from the viewpoint of increasing shape retention and improving fire resistance, it is preferable that the phosphorus compound contains at least one selected from lower phosphates, polyphosphates, and melamine-based phosphorus compounds.

The flame retardant in the present invention is preferably a flame retardant that expands when heated. Examples of the flame retardant that expands when heated include the above-mentioned lower phosphates, preferably metal salts of lower phosphates, and more preferably aluminum phosphite.
At least one kind selected from the above-mentioned lower phosphates, polyphosphates, and melamine-based phosphorus compounds may constitute the entire amount of the flame retardant in the fire-resistant resin composition, or may constitute a part of the flame retardant. The content thereof is preferably 20 to 270 parts by mass, more preferably 30 to 250 parts by mass, and even more preferably 40 to 200 parts by mass.
Furthermore, from the viewpoint of imparting water resistance to a product made from the fire-resistant resin composition, it is more preferable that the phosphorus compound contains at least one selected from lower phosphates and melamine-based phosphorus compounds, and it is particularly preferable that the phosphorus compound contains a lower phosphate.
From the viewpoint of fire resistance, water resistance, etc., the lower phosphate is preferably at least one of a phosphate and a phosphite, more preferably a phosphite. As described above, the lower phosphate is preferably a metal salt, and aluminum is more preferable as the metal. Therefore, the lower phosphate is preferably at least one of a metal phosphate and a metal phosphite, even more preferably a metal phosphite, and particularly preferably an aluminum phosphite.

When the fire-resistant resin composition contains a flame retardant, the content of the flame retardant is preferably 100 to 1,500 parts by mass, more preferably 150 to 1,400 parts by mass, and even more preferably 200 to 1,300 parts by mass, per 100 parts by mass of the resin. By making the content of the flame retardant equal to or greater than these lower limits, the shape retention of the fire-resistant resin composition can be increased, and the fire resistance performance can be further improved. In addition, by making the content equal to or less than the above upper limits, the flexibility, shape retention, etc. of the fire-resistant resin composition are less likely to be impaired.

Heat-absorbing agent
As the heat absorbing agent in the present invention, a hydrated metal compound can be preferably used. The hydrated metal compound is a compound that decomposes when heated to generate water vapor and has the effect of absorbing heat and extinguishing fire.
The hydrated metal compound may be a metal hydroxide or a hydrate of a metal salt, and among these, a metal hydroxide is preferred. A combination of a metal hydroxide compound and a hydrate of a metal salt is also preferred. By using a metal hydroxide compound, it is easy to improve the fire extinguishing performance.

Examples of metal hydroxides include aluminum hydroxide, magnesium hydroxide, calcium hydroxide, hydrotalcite, etc. Examples of metal salt hydrates include hydrates of metal sulfates such as zinc borate hydrate represented by 2ZnO.3B ₂ O _{5.3.5H 2} O, calcium sulfate hydrate (e.g., dihydrate), and magnesium sulfate hydrate (e.g., heptahydrate). Other examples include kaolin clay, dawsonite, and boehmite. Examples of heat absorbing agents include calcium aluminate, talc, etc.
Of the above-mentioned heat-absorbing agents, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, zinc borate hydrate, calcium sulfate hydrate (e.g., dihydrate), and magnesium sulfate hydrate (e.g., heptahydrate) are preferred, and among these, aluminum hydroxide and magnesium hydroxide are more preferred.

The heat-absorbing agent is preferably one that has a thermal decomposition starting temperature of 800°C or less and a heat absorption amount of 300 J/g or more. When either the thermal decomposition starting temperature or the heat absorption amount of the heat-absorbing agent falls within the above range, the heat-absorbing agent can quickly extinguish a fire in the event of a battery or the like catching fire, and the extinguishing properties can be further improved.

The thermal decomposition start temperature of the endothermic agent is preferably 500° C. or less, more preferably 400° C. or less, even more preferably 300° C. or less, and even more preferably 250° C. or less. By setting the thermal decomposition start temperature of the endothermic agent to these upper limit values or less, the endothermic agent decomposes quickly upon ignition, making it possible to quickly extinguish the fire. In addition, the thermal decomposition start temperature of the endothermic agent is, for example, 50° C. or more, preferably 100° C. or more, more preferably 150° C. or more, and even more preferably 180° C. or more.
The thermal decomposition onset temperature can be measured by a thermogravimetric differential thermal analyzer (TG-DTA). Specifically, the measurement conditions were from room temperature to 1000° C., a heating rate of 4° C./min, and a weight of the endothermic agent of 10 mg. The temperature at which the weight began to decrease from the obtained TG curve was determined as the thermal decomposition onset temperature.

The endothermic amount of the endothermic agent is preferably 500 J/g or more, more preferably 600 J/g or more, and even more preferably 900 J/g or more. When the endothermic amount of the endothermic agent is within the above range, the heat absorption is improved, and the fire resistance is better. The endothermic amount of the endothermic agent is usually 4,000 J/g or less, preferably 3,000 J/g or less, and even more preferably 2,000 J/g or less.
The endothermic amount can be measured using a thermogravimetric differential thermal analyzer (TG-DTA). Specifically, the measurement conditions were from room temperature to 1,000° C., a heating rate of 4° C./min, and a weight of the endothermic agent of 10 mg, and the endothermic amount (area of the recess) was calculated from the obtained DTA curve.

The heat absorbing agent preferably has an average particle diameter of 0.1 to 90 μm. By setting the average particle diameter within the above range, the heat absorbing agent can be uniformly dispersed in the resin, and a large amount can be blended. From these viewpoints, the average particle diameter of the heat absorbing agent is more preferably 0.5 to 60 μm, further preferably 0.8 to 40 μm, and even more preferably 0.8 to 10 μm. When the average particle diameter of the heat absorbing agent is within the above range, the dispersibility of the heat absorbing agent in the fire-resistant resin composition is improved, and the heat absorbing agent can be uniformly dispersed in the resin, and the amount of the heat absorbing agent blended relative to the resin can be increased.
The average particle size of the heat absorbing agent is measured in the same manner as the average particle size of the thermally conductive material.

When the fire-resistant resin composition contains an endothermic agent, the content of the endothermic agent is preferably 10 to 1,000 parts by mass, more preferably 20 to 800 parts by mass, and even more preferably 30 to 600 parts by mass, per 100 parts by mass of the resin. By making the content of the endothermic agent equal to or greater than the above lower limit, a sudden increase in temperature can be mitigated, and even if a fire does break out, the fire can be quickly extinguished. By making the content of the endothermic agent equal to or less than the above upper limit, the endothermic agent can be easily dispersed uniformly in the fire-resistant resin composition, and the moldability and mechanical strength of the product made from the fire-resistant resin composition can be easily improved.

<Thermal expansion layered inorganic material>
The thermally expandable layered inorganic material is a conventionally known material that expands when heated, and examples thereof include vermiculite and thermally expandable graphite, among which thermally expandable graphite is preferred. As the thermally expandable layered inorganic material, particulate and scaly materials can be used. When the fire-resistant resin composition contains a thermally expandable layered inorganic material, the thermally expandable layered inorganic material expands when heated by a fire or the like in a building, improving adhesion to the building and improving fire resistance.
The thermally expandable layered inorganic material preferably has a degree of expansion of 100 ml/g or more, more preferably 150 ml/g or more. By making the degree of expansion of the thermally expandable layered inorganic material equal to or more than the lower limit, a large volume of voids can be formed during thermal expansion.
The thermally expandable layered inorganic material preferably has an expansion start temperature of 200° C. or less, more preferably 140° C. or less. By setting the expansion start temperature of the thermally expandable layered inorganic material to the above upper limit or less, the fire resistance and fire extinguishing performance of the fire-resistant material made of the fire-resistant resin composition can be made excellent.

<Thermal Expandable Graphite>
Thermally expandable graphite is a type of crystalline compound that is produced by treating powders of natural flaky graphite, pyrolytic graphite, kish graphite, or the like with an inorganic acid and a strong oxidizing agent to generate a graphite intercalation compound, and that maintains the layered structure of carbon. Examples of inorganic acids include concentrated sulfuric acid, nitric acid, and selenic acid. Examples of strong oxidizing agents include concentrated nitric acid, persulfates, perchloric acid, perchlorates, permanganates, dichromates, dichromates, and hydrogen peroxide. The thermally expandable graphite obtained by the acid treatment as described above may be further neutralized with ammonia, aliphatic lower amines, alkali metal compounds, alkaline earth metal compounds, and the like.

The particle size of the thermally expandable graphite is preferably 20 to 200 mesh. When the particle size of the thermally expandable graphite is within the above range, it expands and easily creates large-capacity voids, improving fire resistance. Also, dispersibility in resin is improved.
The average aspect ratio of the thermally expandable graphite is preferably 2 or more, more preferably 5 or more, and even more preferably 10 or more. There is no particular upper limit to the average aspect ratio of the thermally expandable graphite, but from the viewpoint of preventing cracking of the thermally expandable graphite, it is preferably 1,000 or less. When the average aspect ratio of the thermally expandable graphite is 2 or more, it becomes easier to expand and form large-capacity voids, thereby improving flame retardancy.
The average aspect ratio of the thermally expandable graphite is determined by measuring the maximum dimension (major axis) and the minimum dimension (minor axis) of each of 10 pieces of thermally expandable graphite, and averaging the values obtained by dividing the maximum dimension (major axis) by the minimum dimension (minor axis). The major axis and minor axis of the thermally expandable graphite can be measured, for example, using a field emission scanning electron microscope (FE-SEM).

When the fire-resistant resin composition contains a thermally expandable layered inorganic material, the thermally expandable layered inorganic material preferably has an expansion ratio of 10 or more when heated to 600° C., more preferably 15 or more, and even more preferably 20 or more. When the thermally expandable layered inorganic material has an expansion ratio of 600° C. within the above range, it can exhibit a ignition suppression effect and heat insulating performance.
As shown in the examples described later, the expansion ratio is calculated by heating a test piece at 600° C. for 30 minutes and dividing the thickness of the test piece after heating by the thickness of the test piece before heating.

When the fire-resistant resin composition contains a thermally expandable layered inorganic material, the content of the thermally expandable layered inorganic material is preferably 10 to 1,000 parts by mass, more preferably 20 to 800 parts by mass, and even more preferably 30 to 600 parts by mass, per 100 parts by mass of the resin. When the content of the thermally expandable layered inorganic material is within the above range, it becomes easier to create large-volume voids in the fire-resistant material made of the fire-resistant resin composition, thereby improving flame retardancy.

<Optional ingredients>
<Inorganic fillers>
The fire-resistant resin composition of the present invention may further contain an inorganic filler other than the thermally conductive material, the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material.
The inorganic filler is not particularly limited, and examples thereof include glass fibers, glass beads, dehydrated sludge, etc. These inorganic fillers may be used alone or in combination of two or more kinds.

The average particle size of the inorganic filler is preferably 0.5 to 100 μm, and more preferably 1 to 50 μm. When the content is low, inorganic fillers with a small particle size are preferred from the viewpoint of improving dispersibility, while when the content is high, inorganic fillers with a large particle size are preferred because as the filling rate increases, the viscosity of the fire-resistant resin composition increases and moldability decreases.

When the fire-resistant resin composition of the present invention contains an inorganic filler, the content of the inorganic filler is preferably 10 to 300 parts by mass, more preferably 10 to 200 parts by mass, per 100 parts by mass of the resin. When the content of the inorganic filler is within the above range, the mechanical properties of the fire-resistant material made of the fire-resistant resin composition can be improved.

Plasticizers
The fire-resistant resin composition of the present invention may further contain a plasticizer. In particular, when the resin component is a polyvinyl chloride resin, it is preferable to contain a plasticizer from the viewpoint of improving moldability.
The plasticizer is not particularly limited as long as it is a plasticizer generally used in producing a polyvinyl chloride resin molded body. Specific examples include phthalate ester plasticizers such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), and diisodecyl phthalate (DIDP), fatty acid ester plasticizers such as di-2-ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), and dibutyl adipate (DBA), epoxidized ester plasticizers such as epoxidized soybean oil, adipic acid ester plasticizers such as adipic acid ester and adipic acid polyester, trimellitic acid ester plasticizers such as tri-2-ethylhexyl trimellitate (TOTM) and triisononyl trimellitate (TINTM), and process oils such as mineral oil. The plasticizers may be used alone or in combination of two or more.

When the fire-resistant resin composition of the present invention contains a plasticizer, the content of the plasticizer is preferably 5 to 40 parts by mass, and more preferably 5 to 35 parts by mass, per 100 parts by mass of the resin. When the content of the plasticizer is within the above range, extrusion moldability tends to improve, and the fire-resistant material made of the fire-resistant resin composition can be prevented from becoming too soft.

Dispersants
The fire-resistant resin composition of the present invention may further contain a dispersant. The dispersant improves the dispersibility of the thermally conductive material, the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material in the fire-resistant resin composition.
As the dispersant, various surfactants can be used. The surfactant may have a hydrophilic group portion and a hydrophobic group portion compatible with the resin component. Specifically, polyether phosphate ester or its amine salt, polyether polyol polyester acid or its amine salt, polyester or its amine salt, polycarboxylic acid or its amine salt, phosphate salt of polyaminoamide and phosphoric acid, polyester acid amide or its amine salt, etc. may be mentioned. The amine used in these dispersants may be polyamine. As the dispersant, a polyether-based dispersant is preferable, and among them, polyether phosphate ester or its amine salt is preferable. The dispersant may be used alone or in combination of two or more kinds.

When the fire-resistant resin composition of the present invention contains a dispersant, the content of the dispersant is preferably 1 to 40 parts by mass, and more preferably 5 to 30 parts by mass, per 100 parts by mass of the resin. When the content of the dispersant is within the above range, it becomes easier to incorporate a large amount of the thermally conductive substance, the flame retardant, the heat-absorbing agent, and the thermally expandable layered inorganic material into the fire-resistant material, and the fire resistance and fire extinguishing performance of the fire-resistant material made of the fire-resistant resin composition can be improved.

<Other ingredients>
The fire-resistant resin composition of the present invention can contain various additive components as required within the scope of the invention.
The type of the additive component is not particularly limited, and various additives can be used. Examples of such additives include lubricants, shrinkage inhibitors, crystal nucleating agents, colorants (pigments, dyes, etc.), ultraviolet absorbers, antioxidants, antiaging agents, reinforcing agents, flame retardant assistants, antistatic agents, surfactants, vulcanizing agents, and surface treatment agents. The amount of the additive component added can be appropriately selected within a range that does not impair moldability, etc. The additive components may be used alone or in combination of two or more.

<Method of producing fire-resistant resin composition>
The fire-resistant resin composition of the present invention can be obtained by mixing a resin, a thermally conductive material, a flame retardant, a heat-absorbing agent, a thermally expandable layered inorganic material, and any optional components using a known device such as a bead mill, a Banbury mixer, a kneader mixer, a kneading roll, a Raikai mixer, or a planetary mixer.

[Fireproof material]
The fireproof material of the present invention is a member made of the above-mentioned fireproof resin composition and used in the fireproof structure of a building. The shape of the fireproof material used in the fireproof structure of a building is not particularly limited, and may be, for example, a paste or clay-like fireproof putty. It may also be in the form of a sheet, block, column, or the like. Among these, it is preferable to use it as a fireproof putty or sheet-like fireproof material. In the present invention, by using the fireproof material made of the fireproof resin composition in the fireproof structure of a building, even if a fire breaks out due to a fire or the like, the heat caused by the ignition can be efficiently dissipated and the fire can be quickly extinguished.

The fireproof material of the present invention can be used as a fireproof putty in the fireproof structure of buildings. The fireproof putty can fill and close open areas such as compartment penetrations in buildings, thereby making the compartment penetrations fireproof and providing fire resistance, flameproofing and smokeproofing properties. In the present invention, the fireproof resin composition described above can be used as a fireproof putty.

The fireproof material of the present invention can be used in the form of a fireproof sheet for the fireproof structure of a building. The fireproof sheet can be placed in an open area such as a compartment penetration part in a building to block it, thereby making the compartment penetration part a fireproof structure and providing fire resistance, flame barrier properties, and smoke resistance.
The thickness of the fireproof sheet is not particularly limited, but is preferably 0.5 to 20 mm, more preferably 1 to 15 mm, and even more preferably 1.5 to 10 mm. When the thickness of the fireproof sheet is within the above range, the sheet can exhibit good fire resistance and fire extinguishing performance while maintaining mechanical strength.
In this specification, the "thickness" of the fire-resistant sheet refers to the average thickness of the fire-resistant sheet at three points in the width direction.

The fireproof sheet of the present invention may be used as a fireproof material alone, or may have a structure in which a layer other than a fireproof material is laminated. An example of a structure in which a layer other than a fireproof material is laminated is a structure having a base material and a fireproof material provided on at least one surface of the base material.
Here, the substrate may be a combustible layer, a semi-noncombustible layer, or a noncombustible layer. The thickness of the substrate is not particularly limited, but may be, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm. Examples of materials used for the combustible layer include one or more of cloth, paper, wood, and resin films. When the substrate is a semi-noncombustible layer or a noncombustible layer, examples of materials used for the semi-noncombustible layer or the noncombustible layer include metals, inorganic materials, and the like, and may be a composite of metal and inorganic material, and the composite may be, for example, a composite of aluminum and glass.

The structure in which layers other than the fireproof material are laminated may include a fireproof material and an adhesive layer provided on at least one surface of the fireproof material. The adhesive layer may be provided on the substrate, or may be formed directly on the surface of the fireproof material. A double-sided adhesive tape having adhesive layers provided on both surfaces of the substrate may be attached to at least one surface of the fireproof material. That is, an adhesive layer, a substrate, and an adhesive layer may be provided in this order on one surface of the fireproof material.
The adhesive constituting the adhesive layer is not particularly limited, and examples thereof include, but are not limited to, acrylic adhesives, urethane adhesives, rubber adhesives, etc. The thickness of the adhesive layer is not particularly limited, and is, for example, 3 to 500 μm, and preferably 10 to 200 μm.

<Method of manufacturing fireproof sheet>
The fire-resistant sheet of the present invention can be produced by a method of coating a fire-resistant resin composition to form a film, or by a method of forming a fire-resistant resin composition into a molded article.
In the method of forming a film by coating the fire-resistant resin composition, the fire-resistant resin composition is coated on a substrate or on the release-treated surface of a release sheet, and then appropriately dried, cured, etc. to obtain a fire-resistant material as a coated film.
In the method of forming a molded article from the fire-resistant resin composition, a fire-resistant material is obtained by forming the fire-resistant resin composition into a molded article by molding means such as extrusion molding, injection molding, press molding, etc. As the molding means, extrusion molding is preferable, and molding can be performed using a single-screw extruder, a twin-screw extruder, an injection molding machine, etc.
The fire-resistant sheet obtained by the method for producing a fire-resistant sheet of the present invention can be rolled by a rolling machine or the like to have a desired thickness.

"solvent"
The fire-resistant resin composition of the present invention may be diluted with a solvent, for example, when forming a film by coating, and the diluted fire-resistant resin composition may be used. The solvent adjusts the viscosity of the dispersion of the fire-resistant resin composition containing the thermally conductive material, the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material. The fire-resistant resin composition of the present invention can be made into a fire-resistant sheet by coating a film of the diluted fire-resistant resin composition with a solvent and drying it.
The solvent is not particularly limited, and examples thereof include aliphatic hydrocarbon solvents such as n-pentane, n-hexane, n-heptane, and cyclohexane, aromatic hydrocarbon solvents such as toluene, ester solvents such as ethyl acetate and n-butyl acetate, ketone solvents such as acetone and methyl ethyl ketone (MEK), and alcohol solvents such as ethanol, isopropyl alcohol, and butanol. These may be used alone or in combination of two or more. When two or more types are used in combination, it is preferable to use, for example, an alcohol and water in combination to form a mixed solvent.

When the fire-resistant resin composition of the present invention is diluted with a solvent, the content of the solvent is preferably 50 to 5,000 parts by mass, and more preferably 100 to 4,000 parts by mass, per 100 parts by mass of the resin. When the content of the solvent is within the above range, it becomes easy to adjust the viscosity of the dispersion liquid using the fire-resistant resin composition, and the moldability of the fire-resistant material made of the fire-resistant resin composition becomes good.

[Fire-resistant laminate]
The fireproof laminate of the present invention comprises a fireproof resin layer containing at least one fireproof additive selected from the group consisting of a flame retardant, a heat absorbing agent, and a thermally expandable layered inorganic material, and a resin, and a heat conductive layer containing a heat conductive material, and is used in a fireproof structure of a building. In the present invention, by using the fireproof laminate in a fireproof structure of a building, even if a fire breaks out due to a fire or the like, the heat caused by the ignition can be efficiently dissipated and the fire can be quickly extinguished.
The fireproof laminate of the present invention may be configured such that the fireproof resin layer and the heat conductive layer are directly laminated, or may be configured such that a layer other than the fireproof resin layer and the heat conductive layer is laminated, for example, an adhesive layer may be provided between the fireproof resin layer and the heat conductive layer. From the viewpoint of improving the mechanical strength and easily exhibiting fire resistance and fire extinguishing performance due to the heat dissipation efficiency caused by high thermal conduction, it is preferable that the fireproof resin layer and the heat conductive layer are directly laminated.

The fireproof laminate of the present invention is preferably in the form of a sheet, and the thickness of the sheet-like fireproof laminate is not particularly limited, but is preferably 0.5 to 20 mm, more preferably 1 to 15 mm, and even more preferably 1.5 to 10 mm. When the thickness of the fireproof laminate is within the above range, it can exhibit good fire resistance and fire extinguishing performance while maintaining mechanical strength.
In this specification, the "thickness" of the fire-resistant laminate refers to the average thickness of the fire-resistant laminate at three points in the width direction.

<Fire-resistant resin layer>
The fire-resistant resin layer of the present invention can be produced by molding a composition containing at least one fire-resistant additive selected from the group consisting of a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material, and a resin. The fire-resistant resin layer of the present invention has fire resistance due to the inclusion of the fire-resistant additive, and exhibits fire extinguishing performance when a fire occurs.
The fire-resistant resin layer of the present invention may contain one of the three components of the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material alone, or may contain two of these components in combination. That is, the fire-resistant resin layer may contain a combination of the flame retardant and the heat absorbing agent, a combination of the flame retardant and the thermally expandable layered inorganic material, or a combination of the heat absorbing agent and the thermally expandable layered inorganic material. Furthermore, the fire-resistant resin layer may contain all of the flame retardant, the heat absorbing agent, and the thermally expandable layered inorganic material.
In addition, the fire-resistant additives and resins used in the fire-resistant resin layer of the present invention can be the same as the fire-resistant additives and resins of the fire-resistant resin composition described above, and the details are the same as those described above, so the description will be omitted.

The content of the fire-resistant additive in the fire-resistant resin layer is preferably 50 to 2,500 parts by mass, more preferably 100 to 2,300 parts by mass, even more preferably 150 to 2,100 parts by mass, and even more preferably 200 to 1,900 parts by mass, per 100 parts by mass of resin. By making the content of the fire-resistant additive equal to or greater than the above lower limit, it is possible to impart appropriate fire resistance and fire extinguishing performance to the fire-resistant resin layer. Furthermore, by making the content of the fire-resistant additive equal to or less than the above upper limit, it is possible to contain a certain proportion or more of resin in the fire-resistant resin layer, which makes it possible to appropriately disperse the fire-resistant additive in the resin of the fire-resistant resin layer, resulting in good moldability.

When the fire-resistant resin layer contains a flame retardant, the content of the flame retardant is preferably 100 to 1,500 parts by mass, more preferably 150 to 1,400 parts by mass, and even more preferably 200 to 1,300 parts by mass, per 100 parts by mass of resin. By making the content of the flame retardant equal to or greater than these lower limits, the shape retention of the fire-resistant resin layer is increased, and the fire resistance performance can be further improved. In addition, by making the content equal to or less than the upper limit, the flexibility, shape retention, etc. of the fire-resistant resin layer are less likely to be impaired.

When the fire-resistant resin layer contains a heat-absorbing agent, the content of the heat-absorbing agent is preferably 10 to 1,000 parts by mass, more preferably 20 to 800 parts by mass, and even more preferably 30 to 600 parts by mass, per 100 parts by mass of the resin. By making the content of the heat-absorbing agent equal to or greater than the above lower limit, a sudden increase in temperature can be mitigated, and even if a fire does break out, the fire can be quickly extinguished. By making the content of the heat-absorbing agent equal to or less than the above upper limit, the heat-absorbing agent can be easily dispersed uniformly in the fire-resistant resin layer, and the moldability and mechanical strength of the fire-resistant resin layer can be easily improved.

When the fire-resistant resin layer contains a thermally expandable layered inorganic material, the content of the thermally expandable layered inorganic material is preferably 10 to 1,000 parts by mass, more preferably 20 to 800 parts by mass, and even more preferably 30 to 600 parts by mass, per 100 parts by mass of the resin. When the content of the thermally expandable layered inorganic material is within the above range, it becomes easier to create large-volume voids in the fire-resistant resin layer, improving flame retardancy.

The resin content in the fire-resistant resin layer is, for example, 1 to 97% by mass, preferably 2 to 97% by mass, and more preferably 3 to 97% by mass, based on the solid content of the fire-resistant resin layer. If it is equal to or greater than these lower limits, the dispersibility of fire-resistant additives and the like is improved, and the mechanical strength and moldability of the fire-resistant resin layer, such as tensile strength, tend to be increased. If it is equal to or less than the upper limits, the fire resistance and fire extinguishing performance of the fire-resistant resin layer tend to be improved.

The fire-resistant resin layer of the present invention can contain various additive components as necessary, as long as the object of the present invention is not impaired.

The thickness of the fire-resistant resin layer of the present invention is not particularly limited, but is preferably 0.1 to 20 mm, more preferably 0.3 to 10 mm, and even more preferably 0.5 to 5 mm. When the thickness of the fire-resistant resin layer is within the above range, fire resistance and fire extinguishing performance can be obtained while maintaining mechanical strength.
In this specification, the "thickness" of the fire-resistant resin layer refers to the average thickness of the fire-resistant resin layer at three points in the width direction.

<<Method for manufacturing fire-resistant resin layer>>
The composition for forming the fire-resistant resin layer of the present invention can be obtained by mixing the fire-resistant additive, the resin, and any optional components using a known device such as a bead mill, a Banbury mixer, a kneader mixer, a kneading roll, a Raikai mixer, a planetary mixer, etc. When the composition for forming the fire-resistant resin layer of the present invention is diluted with a solvent, the diluted solution of the composition may be obtained by further adding a solvent to the composition and mixing using the above-mentioned mixing device.
The obtained composition for forming the fire-resistant resin layer can be used to obtain a fire-resistant resin layer by a coating film formation method and a molding method, similar to the above-mentioned method for producing a fire-resistant material.

<Heat Conduction Layer>
The thermally conductive layer of the present invention is a layer containing the above-mentioned thermally conductive material. The thermally conductive layer may be in the form of a composition containing a thermally conductive material and a resin (first thermally conductive layer), or may be in the form of a composition substantially composed of a thermally conductive material (second thermally conductive layer). The thermally conductive layer has at least one of a first thermally conductive layer and a second thermally conductive layer, and may be one layer or two or more layers. When the thermally conductive layer has two or more layers, it is preferable that the first thermally conductive layer and the second thermally conductive layer are combined, and from the viewpoint of improving the film strength, it is more preferable that the first thermally conductive layer and the second thermally conductive layer are laminated in order on the fire-resistant resin layer, and it is even more preferable that the first thermally conductive layer and a plurality of second thermally conductive layers are laminated in order on the fire-resistant resin layer. In addition, the first thermally conductive layer may be two or more layers, and these layers may contain different thermally conductive materials.

<<First thermal conductive layer>>
The first thermally conductive layer of the present invention contains the above-mentioned thermally conductive material and resin. Therefore, the thermally conductive material and resin used in the first thermally conductive layer of the present invention can be the same as the thermally conductive material and resin of the above-mentioned fire-resistant resin composition, so the details are the same as those described above and will not be described again. Note that the thermally conductive material used in the first thermally conductive layer is preferably a thermally conductive filler.
When the first thermally conductive layer is used as the thermally conductive layer, the adhesion to the building in the event of a fire is improved, and the fire resistance can be improved. Also, when the first thermally conductive layer is used as the thermally conductive layer, the impact resistance is improved.

The content of the thermally conductive material in the first thermally conductive layer is preferably 100 to 1,500 parts by mass, more preferably 150 to 1,400 parts by mass, even more preferably 200 to 1,300 parts by mass, and even more preferably 250 to 1,200 parts by mass, per 100 parts by mass of resin. By having the content of the thermally conductive material in the first thermally conductive layer within the above range, it is possible to improve the thermal conductivity while improving adhesion to the building in the event of a fire, improving fire resistance, and providing good fire resistance.

The resin content in the first thermally conductive layer is, for example, 1 to 20 mass %, preferably 2 to 15 mass %, and more preferably 3 to 10 mass %, based on the solid content of the first thermally conductive layer. If it is equal to or greater than these lower limits, the dispersibility of the thermally conductive substance and the like is improved, and the mechanical strength and moldability of the first thermally conductive layer, such as tensile strength, tend to be increased. If it is equal to or less than the upper limits, the thermal conductivity of the first thermally conductive layer tends to be improved.

The thermally conductive substance contained in the first thermally conductive layer of the present invention is preferably 95% by mass or less, more preferably 90% by mass or less, and even more preferably 85% by mass or less, based on the solid content of the first thermally conductive layer. If it is below these upper limits, it is possible to ensure moldability and mechanical strength while exhibiting fire resistance and fire extinguishing performance due to the heat dissipation efficiency caused by high thermal conductivity. Furthermore, the thermally conductive substance contained in the first thermally conductive layer of the present invention is preferably 50% by mass or more, more preferably 55% by mass or more, and even more preferably 60% by mass or more, based on the solid content of the first thermally conductive layer. If it is above these lower limits, the thermal conductivity of the first thermally conductive layer is more likely to be improved.

The first thermally conductive layer of the present invention may contain various additive components as necessary, provided that the object of the present invention is not impaired.

The first thermally conductive layer of the present invention may contain, for example, a fire-resistant additive, and preferably contains a thermally expandable layered inorganic material. Details of the fire-resistant additive are as described above. When the first thermally conductive layer contains a fire-resistant additive, the content of the fire-resistant additive is preferably 10 to 1,000 parts by mass, more preferably 20 to 800 parts by mass, and even more preferably 30 to 600 parts by mass, per 100 parts by mass of the resin. When the content of the fire-resistant additive is within the above range, the first thermally conductive layer can be imparted with fire resistance and fire extinguishing performance.

The thickness of the first thermally conductive layer of the present invention is not particularly limited, but is preferably 0.1 to 20 mm, more preferably 0.3 to 10 mm, and even more preferably 0.5 to 5 mm. When the thickness of the first thermally conductive layer is within the above range, the layer can exhibit fire resistance and fire extinguishing performance due to the heat dissipation efficiency resulting from high thermal conductivity while ensuring mechanical strength.
In this specification, the "thickness" of the first thermally conductive layer refers to the average thickness of the first thermally conductive layer at three points in the width direction.

<<Method of Manufacturing First Thermal Conductive Layer>>
The composition forming the first thermally conductive layer of the present invention can be obtained by mixing the thermally conductive material, the resin, and any optional components using a known device such as a bead mill, a Banbury mixer, a kneader mixer, a kneading roll, a Raikai mixer, a planetary mixer, etc. When the composition forming the first thermally conductive layer of the present invention is diluted with a solvent, the diluted solution of the composition may be obtained by further adding a solvent to the composition and mixing using the above-mentioned mixing device.
Then, the obtained composition for forming the first thermally conductive layer can be used to obtain the first thermally conductive layer by a coating film formation method and a molded body formation method, similar to the manufacturing method of the fire-resistant material described above.

<<Second thermal conductive layer>>
The second thermally conductive layer of the present invention is substantially composed of the thermally conductive material described above. Here, "substantially composed of a thermally conductive material" means that the second thermally conductive layer may be composed only of a thermally conductive material, or may contain a material other than the thermally conductive material within a range that does not impair the function of the second thermally conductive layer. In addition, the second thermally conductive layer generally does not contain a resin.
Specifically, the thermally conductive material in the second thermally conductive layer is contained in an amount greater than 95% by mass, preferably 97% by mass or more, more preferably 99% by mass or more, and even more preferably 100% by mass, based on the total amount of the second thermally conductive layer.
The second thermally conductive layer of the present invention can be obtained by attaching a thermally conductive material in a layered form onto any one of the layers constituting the fire-resistant laminate, such as the first thermally conductive layer, the fire-resistant resin layer, etc. Furthermore, the second thermally conductive layer of the present invention can be obtained by laminating a thermally conductive material, which has been previously formed into a film or layer, onto the first thermally conductive layer or the fire-resistant resin layer.
The thermally conductive material used in the second thermally conductive layer of the present invention can be the same as the thermally conductive material of the fire-resistant resin composition described above, and the details are the same as those described above, so the description will be omitted. In addition, as the thermally conductive material used in the second thermally conductive layer, a thermally conductive filler is preferable, and specifically, aluminum nitride, silicon nitride, magnesium oxide, hexagonal boron nitride, aluminum oxide, anhydrous magnesium carbonate, magnesium hydroxide, silicon oxide, carbon black, graphite, and thermally expandable graphite are more preferable.

The method for depositing the thermally conductive material in a layer form as the second thermally conductive layer is not particularly limited, but for example, the thermally conductive material can be deposited by sputtering, vacuum deposition, ion plating, chemical vapor deposition, pulsed laser deposition, or the like. Among these, sputtering is preferred from the viewpoint of film thickness controllability. The sputtering method is not particularly limited, but examples thereof include direct current magnetron sputtering, high frequency magnetron sputtering, and ion beam sputtering. The sputtering device may be of either a batch type or a roll-to-roll type.

The thickness of the second thermally conductive layer is preferably 5 μm to 10,000 μm, more preferably 10 μm to 1,000 μm, even more preferably 15 μm to 500 μm, and even more preferably 25 μm to 250 μm, from the viewpoint of ensuring formability and mechanical strength while exhibiting fire resistance and fire extinguishing performance through heat dissipation efficiency due to high thermal conductivity.

The fire-resistant laminate may further include a substrate, a pressure-sensitive adhesive layer, etc. For example, when the fire-resistant laminate includes a substrate, the fire-resistant laminate may include a substrate, and a heat-conductive layer and a fire-resistant resin layer provided on at least one surface of the substrate.
In addition, when an adhesive layer is provided, the adhesive layer may be provided on the outside of the laminated structure of the fire-resistant resin layer and the heat conductive layer, and the fire-resistant resin layer and the heat conductive layer. The adhesive layer may be provided on the substrate, or may be directly formed on at least one surface of the fire-resistant resin layer and the heat conductive layer. In addition, a double-sided adhesive tape having adhesive layers provided on both surfaces of the substrate may be attached to at least one surface of the fire-resistant resin layer and the heat conductive layer. That is, an adhesive layer, a substrate, and an adhesive layer may be provided in this order on at least one surface of the fire-resistant resin layer and the heat conductive layer. Details of the substrate and the adhesive layer are as described above.

<<Method for manufacturing fire-resistant laminate>>
The method for producing the fireproof laminate of the present invention may be any method capable of forming a laminated structure of a fireproof resin layer and a heat conductive layer. For example, the fireproof resin layer and the heat conductive layer may be separately prepared and laminated by pressure bonding or the like to form the laminate, or the fireproof resin layer and the heat conductive layer may be integrally formed by co-extruding the compositions of the fireproof resin layer and the heat conductive layer by an extruder or the like.

[Compartment penetration processing structure and compartment penetration processing method]
First Embodiment
The compartment penetration processing structure according to the first embodiment of the present invention, as shown in Figure 1, is formed in a partition 11 of a building and has a compartment penetration section 15 through which a long insert 21 is inserted, as a fireproof structure.
The compartment penetration treatment method according to the first embodiment of the present invention includes a step of providing a fire-resistant material in the compartment penetration portion 15, as will be described below.

The partition 11 in the partition penetration processing structure of the present invention is a member that separates partitions (first partition A and second partition B) in the wall surface of a building, and has a partition penetration part 15 that penetrates from one outer surface 11A side of the partition 11 to the other outer surface 11B side. The partition 11 shown in FIG. 1 is a hollow wall, and is composed of two wall materials (partition materials) 12A, 12B arranged with a gap (hollow part 13) between them. Therefore, the partition penetration part 15 is composed of a through hole 13A formed in one wall material 12A, a through hole 13B formed in the other wall material 12B, and a hollow part 13 between them. The outer surface of one wall material 12A constitutes the outer surface 11A of the partition 11, and the outer surface of the other wall material 12B constitutes the outer surface 11B of the partition 11. The through holes 13A and 13B may have a circular, elliptical, or similar shape so that the outer peripheral surface of the insert member 2, which will be described later, can fit the shape of the inner peripheral surface of the through holes 13A and 13B when the insert member 2 is inserted. Note that the through holes 13A and 13B in the outer surfaces 11A and 11B, respectively, form the openings 13C and 13D of the partition penetration portion 15 provided in the partition portion 11.

The insertion member 2 is sleeve-shaped and is inserted into the partition penetrating portion 15, and is disposed in the partition penetrating portion 15 so that the insert 21 passes through the inside of the sleeve. Here, the sleeve-shaped insertion member 2 passes from one through hole 13A to the other through hole 13B in the partition penetrating portion 15. The insertion member 2 can prevent communication between the hollow portion 13 and the outside of the partition portion 11.
The insert member 2 is sleeve-shaped, or sheet-shaped or roll-shaped and can be deformed into a sleeve. The insert member 2 that can be deformed into a sleeve refers to a sheet-shaped or roll-shaped member that is inserted into the compartment penetration part 15 by facing the end parts of the sheet-shaped or roll-shaped member into a sleeve shape. Since the insert member 2 can be deformed into a sleeve shape, the size of the insert member 2 can be adjusted to match the size of the through holes 13A and 13B at the construction site, so that it can be used for compartment penetration parts 15 of various sizes. The thickness of the sheet-shaped or roll-shaped insert member 2 is not particularly limited, but is, for example, 0.01 to 10 mm, preferably 0.05 to 5 mm. The insert member 2 may have flexibility so that it can be deformed into a sleeve shape.
The insert member 2 is preferably made of a non-combustible material. The non-combustible material in the insert member 2 is one specified in the Building Standards Act and the Enforcement Order of the Building Standards Act. Examples of the non-combustible material in the insert member 2 include mortar, a metal pipe such as a steel sleeve, inorganic fiber, and a molded body thereof.

As shown in FIG. 1, the compartment penetration structure according to the first embodiment of the present invention employs the above-mentioned fireproof putty as a fireproof material used in the fireproof structure of a building.
A receiving portion 6 for receiving the fireproof putty 3A is provided on the inside of the insert member 2 in the axial direction of the insert body 21. The receiving portion 6 receives the fireproof putty 3A discharged from the opening 13A of the compartment penetration portion 15, and contributes to filling the compartment penetration portion 15 with the fireproof putty 3A. The receiving portion 6 is preferably a surface inclined with respect to the axial direction of the insert body 21, a surface perpendicular to the axial direction, or a combination of these, and more preferably includes a perpendicular surface from the viewpoint of receiving the filler 5 well. The receiving portion 6 may be provided integrally with the insert member 2, or may be provided separately from the insert member 2. When the receiving portion 6 is provided integrally with the insert member 2, for example, the disk-shaped receiving portion 6 may be provided continuously with the inner peripheral surface of the insert member 2 as shown in FIG. 1. When the receiving portion 6 is separate, for example, the bottomed cylindrical receiving portion 6 may be fitted into the inside of the insert member 2.
The receiving portion 6 has a hole 6A near the center of the bottom, and the inserting body 21 passes through the hole 6A in the axial direction of the inserting member 2. The hole 6A may be circular, but may be any shape other than circular depending on the shape of the inserting body 21. In addition, when the receiving portion 6 is made of a flexible material, the hole 6A may be smaller than the size of the inserting body 21, and a cut may be used instead of the hole 6A. The receiving portion 6 may be a metal fitting having a protrusion that can be installed in the hole 6A, plastic, or a bag-like object that receives fireproof putty.
The receiving portion 6 is not particularly limited as long as it is made of a material capable of receiving the fire-resistant putty 3A, and examples of the material include resin-based materials, fiber-based materials, metal-based materials, glass, and wood, and may also be a composite material made of two or more of these materials.

When a fireproof material that is a fireproof putty is used, the receiving portion 6 may not be provided. In that case, for example, the insert member 2 serves as a member that receives the fireproof putty 3A. Specifically, the inner peripheral surface of the insert member 2 receives the fireproof putty 3A that is discharged from the opening 13A of the compartment penetration portion 15, and the compartment penetration portion 15 can be filled by layering the fireproof putty 3A on the inner peripheral surface.

According to the compartment penetration structure of the first embodiment of the present invention, the insertion member 2 prevents communication between the hollow portion 13 and the outside of the partition portion 11, and one opening 13C of the compartment penetration portion 15 is covered with the fireproof putty 3A, so that communication between one opening 13C of the compartment penetration portion 15 and the other opening 13D is also prevented. Therefore, the compartment penetration structure of the first embodiment can provide the compartment penetration portion 15 with an appropriate fireproof structure.
Furthermore, according to the compartment penetration processing structure of the first embodiment of the present invention, the fire-resistant putty 3A covering the compartment penetration portion 15 has good thermal conductivity, so that the heat generated by a fire can be efficiently conducted throughout the structure, and the entire structure exhibits even fire resistance and extinguishing performance, thereby reducing damage due to the uniform fire resistance and extinguishing performance.

Second Embodiment
The second embodiment differs from the first embodiment in that the fireproof material, which is the fireproof sheet described above, is used as a member for the fireproof structure of the building, as shown in Fig. 2. The differences between the first embodiment and the second embodiment will be described below. In addition, in the following description of different embodiments, members having the same configuration will be given the same reference numerals.

When the fireproof material of the present invention is used as the fireproof sheet 3B, as shown in Fig. 2, the fireproof sheet 3B is disposed on the inner peripheral surface of the insert member 2. Various means can be used to dispose the fireproof sheet 3B on the inner peripheral surface of the insert member 2.
When the insert member 2 is sleeve-shaped, for example, the insert member 2 and the fireproof sheet 3B, which are prepared separately, may be fixed by a known fixing means such as an adhesive, a pressure-sensitive adhesive, a pressure-sensitive adhesive tape, etc. The insert member 2 and the fireproof sheet 3B may be fixed together in advance to be integrated, or may be fixed together at the construction site before construction to be integrated.
In the case where the insertion member 2 is capable of being deformed from a sheet shape to a sleeve shape, for example, a method can be used in which a fire-resistant sheet 3B is fixed to the sheet-shaped insertion member 2 by a known fixing means such as an adhesive, pressure-sensitive adhesive, or adhesive tape, and then the insertion member 2 is deformed into a sleeve shape so that the fixed fire-resistant sheet 3B becomes the inner surface.
Here, the adhesive, pressure sensitive adhesive and adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material or a flame retardant material, and a flame retardant may be added to the adhesive, pressure sensitive adhesive and the like.

After the insert member 2 and the fireproof sheet 3B are placed in the compartment penetration part 15, the fireproof sheet 3B extending outward from the penetration hole 13A is appropriately bent or folded to reduce its diameter as shown in Fig. 2, so that the fireproof sheet 3B closely surrounds the outer periphery of the insert 21. Then, a string-like member 22 is wound around the surrounding portion of the fireproof sheet 3B, and the fireproof sheet 3B is fixed to the insert 21 by the string-like member 22, so that one opening 13C of the compartment penetration part 15 is covered by the fireproof sheet 3B.
The string-like member 22 may be any member that can be bent, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled, such as a mould. When a wire member is used, the fireproof sheet 3B can be fixed to the insert 21 simply by twisting or twisting.

According to the compartment penetration structure of the second embodiment of the present invention, the insertion member 2 prevents communication between the hollow portion 13 and the outside of the partition portion 11, and one opening 13C of the compartment penetration portion 15 is covered by the fireproof sheet 3B, so that communication between one opening 13C of the compartment penetration portion 15 and the other opening 13D is also prevented. Therefore, the compartment penetration structure of the second embodiment can provide the compartment penetration portion 15 with an appropriate fireproof structure.
Moreover, according to the compartment penetration processing structure of the second embodiment of the present invention, the insert member 2 having the fireproof sheet 3B arranged on the inner peripheral surface is inserted into the compartment penetration part 15 from one opening 13C and attached, and then the one opening 13C is covered with the fireproof sheet 3B. Therefore, the compartment penetration part 15 can be made fireproof with a small number of parts, and all work can be done from one side (the outer surface 11A side) of the partition part 11, improving workability.
Furthermore, according to the compartment penetration processing structure of the second embodiment of the present invention, the fire-resistant sheet 3B covering the compartment penetration portion 15 has good thermal conductivity, and therefore can efficiently conduct heat generated by a fire throughout the entire structure, and the entire structure exhibits even fire resistance and extinguishing performance, thereby reducing damage due to the uniform fire resistance and extinguishing performance.

Third Embodiment
The third embodiment differs from the first embodiment in that the above-mentioned fireproof laminate is used as a member for a fireproof structure of a building, as shown in Fig. 3. The differences between the first embodiment and the third embodiment will be described below. In the following description of different embodiments, the same reference numerals will be used to designate members having the same configuration.
The compartment penetration treatment method according to the third embodiment of the present invention includes a step of providing a fire-resistant laminate at the compartment penetration portion 15, as will be described below.

When the fireproof material of the present invention is used as the fireproof laminate 3C, as shown in Fig. 3, the fireproof laminate 3C is disposed on the inner peripheral surface of the insert member 2. Various means can be used to dispose the fireproof laminate 3C on the inner peripheral surface of the insert member 2.
When the insert member 2 is sleeve-shaped, for example, the insert member 2 and the fireproof laminate 3C, which are prepared separately, may be fixed to each other by a known fixing means such as an adhesive, a pressure-sensitive adhesive, a pressure-sensitive adhesive tape, etc. The insert member 2 and the fireproof laminate 3C may be fixed to each other in advance to be integrated, or may be fixed to each other at the construction site before construction to be integrated.
In the case where the insert member 2 is capable of being deformed from a sheet shape to a sleeve shape, for example, a method can be used in which the fire-resistant laminate 3C is fixed to the sheet-shaped insert member 2 by a known fixing means such as an adhesive, pressure-sensitive adhesive, or adhesive tape, and then the insert member 2 is deformed into a sleeve shape so that the fixed fire-resistant laminate 3C becomes the inner surface.
Here, the adhesive, pressure sensitive adhesive and adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material or a flame retardant material, and a flame retardant may be added to the adhesive, pressure sensitive adhesive or the like.

The fire-resistant resin layer _3C1 of the fire-resistant laminate 3C is preferably disposed on the side of the insert 21. By disposing the fire-resistant resin layer _3C1 on the side of the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 can suppress the spread of flames through the insert 21.
In addition, it is preferable that the fire-resistant resin layer _3C1 of the fire-resistant laminate 3C is in contact with the insert 21. By having the fire-resistant resin layer _3C1 in contact with the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 can efficiently suppress the spread of flames through the insert 21.

The heat conductive layer _3C2 of the fire-resistant laminate 3C is provided on the back side of the fire-resistant resin layer _3C1 when viewed from the insert 21 side, and is preferably directly laminated on the fire-resistant resin layer _3C1 . By providing the heat conductive layer _3C2 on the back side of the fire-resistant resin layer _3C1 , the heat generated by a fire can be efficiently conducted to the entire fire-resistant resin layer _3C1 by the heat conductive layer _3C2 , and the entire fire-resistant resin layer _3C1 exhibits uniform fire resistance and fire extinguishing performance, thereby reducing damage due to the uniform fire resistance and fire extinguishing performance.
In addition, it is preferable that the heat conductive layer _3C2 of the fire-resistant laminate 3C is not in contact with the insert 21. Since the heat conductive layer _3C2 is not in contact with the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 does not hinder the flames from spreading through the insert 21.

After the insert member 2 and the fireproof laminate 3C are placed in the compartment penetration part 15, the fireproof laminate 3C extending outward from the through hole 13A is appropriately bent or folded to reduce its diameter as shown in Fig. 3, so that the fireproof laminate 3C closely surrounds the outer periphery of the insert 21. Then, a string-like member 22 is wound around the surrounding portion of the fireproof laminate 3C, and the fireproof laminate 3C is fixed to the insert 21 by the string-like member 22, so that one opening 13C of the compartment penetration part 15 is covered by the fireproof laminate 3C.
The string-like member 22 may be any member that can be bent, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled, such as a mould. When a wire member is used, the fireproof laminate 3C can be fixed to the insert 21 simply by twisting or twisting.

According to the compartment penetration structure of the third embodiment of the present invention, the insert member 2 prevents communication between the hollow portion 13 and the outside of the partition portion 11, and one opening 13C of the compartment penetration portion 15 is covered by the fire-resistant laminate 3C, so that communication between one opening 13C of the compartment penetration portion 15 and the other opening 13D is also prevented. Thus, the compartment penetration structure of the third embodiment can provide the compartment penetration portion 15 with an appropriate fireproof structure.
Moreover, according to the compartment penetration processing structure of the third embodiment of the present invention, the insert member 2 having the fire-resistant laminate 3C arranged on the inner peripheral surface thereof is inserted into the compartment penetration part 15 from one opening 13C, and then the one opening 13C is covered with the fire-resistant laminate 3C. Therefore, the compartment penetration part 15 can be made fireproof with a small number of parts, and all the work can be performed from one side (the outer surface 11A side) of the partition part 11, improving the workability.
Furthermore, according to the compartment penetration processing structure of the third embodiment of the present invention, the fire-resistant laminate 3C covering the compartment penetration portion 15 has good thermal conductivity, so that the heat generated by a fire can be efficiently conducted throughout the structure, and the entire structure exhibits even fire resistance and extinguishing performance, thereby reducing damage due to the uniform fire resistance and extinguishing performance.

Fourth Embodiment
The fourth embodiment differs from the first embodiment in that the above-mentioned fireproof sheet is modified into a sleeve shape and used as an insert member in the fireproof structure of the building, as shown in Fig. 4. The differences between the first embodiment and the fourth embodiment will be described below. In the following description of different embodiments, the same reference numerals will be used to designate members having the same configuration.

As shown in FIG. 4, in the compartment penetration treatment structure according to this embodiment, a fireproof sheet 3B is deformed into a sleeve shape and is inserted into the compartment penetration portion 15 while an insert 21 is passed through the inside of the fireproof sheet 3B.
The fireproof sheet 3B is deformed into a sleeve shape so as to fit the shape of the inner peripheral surface of the through holes 13A, 13B constituting the compartment penetration part 15. That is, the fireproof sheet 3B may be formed into a sleeve shape so that its outer peripheral surface conforms to the shape of the inner peripheral surface of the through holes 13A, 13B. Since the shape of the inner peripheral surface of the through holes 13A, 13B is generally a circle, an ellipse, or a shape similar thereto, the fireproof sheet 3B may be rolled into a sleeve shape, and may be formed into a circle, an ellipse, or a shape similar thereto.
When the fire-resistant sheet 3B is formed into a sleeve shape, the ends of the fire-resistant sheet 3B are placed opposite each other, and at this time, the ends may be bonded together with an adhesive, a pressure-sensitive adhesive, an adhesive tape, or the like. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material, and a flame retardant may be blended into the adhesive, the pressure-sensitive adhesive, or the like. The adhesive tape includes a substrate and an adhesive layer provided on one side of the substrate, and each of the substrate and the adhesive layer is preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material.
However, when the fire-resistant sheet 3B is formed into a sleeve shape, the ends of the fire-resistant sheet 3B are not limited to facing each other, and the ends may overlap each other to form a sleeve shape.

A cover material 4 that closes one opening 13C is provided at one end _3B1 of the sleeve-shaped fire-resistant sheet 3B. The means for providing the cover material 4 at one end _3B1 of the fire-resistant sheet 3B is not particularly limited, and examples thereof include fixing the cover material 4 by known fixing means such as an adhesive, a pressure-sensitive adhesive, and an adhesive tape. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material, and a flame retardant may be blended into the adhesive, the pressure-sensitive adhesive, or the like.
The cover material 4 is not particularly limited as long as it is a material capable of closing the opening 13C, and examples thereof include a metal-based sheet, a fiber-based sheet, and a resin-based sheet.
The thickness of the cover material 4 is preferably 0.01 to 10 mm, more preferably 0.05 to 5 mm, and even more preferably 0.1 to 1 mm. When the thickness of the cover material 4 is within the above range, it can exhibit flexibility to be bent or curved so as to be able to surround the outer periphery of the insert 21 in close contact therewith, as described below.

After the sleeve-shaped fireproof sheet 3B is placed in the compartment penetration part 15, the cover material 4 provided on one end _3B1 of the fireproof sheet 3B extends outward from the penetration hole 13A. As shown in Fig. 4, the cover material 4 is appropriately bent or folded to reduce its diameter, so that the cover material 4 closely surrounds the outer periphery of the insert 21. Then, a string-like member 22 is wound around the surrounding portion of the cover material 4, and the cover material 4 is fixed to the insert 21 by the string-like member 22, so that one opening 13C of the compartment penetration part 15 is covered by the cover material 4.
The string-like member 22 may be any member that can be bent, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled, such as a mould. When a wire member is used, the cover material 4 can be fixed to the insertion body 21 simply by twisting or twisting.

According to the compartment penetration structure of the fourth embodiment of the present invention, the sleeve-shaped fireproof sheet 3B prevents communication between the hollow portion 13 and the outside of the partition portion 11, and one opening 13C of the compartment penetration portion 15 is covered by the cover material 4, so that communication between one opening 13C of the compartment penetration portion 15 and the other opening 13D is also prevented. Therefore, the compartment penetration structure of the fourth embodiment can provide the compartment penetration portion 15 with an appropriate fireproof structure.
Moreover, according to the compartment penetration processing structure according to the fourth embodiment of the present invention, the sleeve-shaped fireproof sheet 3B can be inserted into the compartment penetration part 15 from one opening 13C and attached, and then the one opening 13C can be covered with the cover material 4. Therefore, the compartment penetration part 15 can be made fireproof with a small number of parts, and all work can be performed from one side (the outer surface 11A side) of the partition part 11, improving workability.

Fifth embodiment
The fifth embodiment differs from the first embodiment in that the above-mentioned fireproof laminate is modified into a sleeve shape and used as an insert member in the fireproof structure of a building, as shown in Fig. 5. The differences between the first embodiment and the fifth embodiment will be described below. In the following description of different embodiments, the same reference numerals will be used to designate members having the same configuration.

As shown in FIG. 5, in the compartment penetration treatment structure according to this embodiment, a fire-resistant laminate 3C is deformed into a sleeve shape, and is inserted into the compartment penetration part 15 while an insert 21 is passed through the inside, and attached.
The fireproof laminate 3C is deformed into a sleeve shape so as to fit the shape of the inner peripheral surface of the through holes 13A, 13B constituting the compartment penetration part 15. That is, the fireproof laminate 3C may be formed into a sleeve shape so that its outer peripheral surface conforms to the shape of the inner peripheral surface of the through holes 13A, 13B. Since the shape of the inner peripheral surface of the through holes 13A, 13B is generally a circle, an ellipse, or a shape similar thereto, the fireproof laminate 3C may be rolled into a sleeve shape, and may be formed into a circle, an ellipse, or a shape similar thereto.
When the fire-resistant laminate 3C is formed into a sleeve shape, the ends of the fire-resistant laminate 3C are placed opposite each other, and at this time, the ends may be bonded together with an adhesive, a pressure-sensitive adhesive, an adhesive tape, or the like. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material, and a flame retardant may be blended into the adhesive, the pressure-sensitive adhesive, or the like. The adhesive tape includes a substrate and an adhesive layer provided on one side of the substrate, and each of the substrate and the adhesive layer is preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material.
However, when the fire-resistant laminate 3C is formed into a sleeve shape, the ends of the fire-resistant laminate 3C are not limited to being faced to each other, and the ends may be overlapped to form a sleeve shape.

The fire-resistant resin layer _3C1 of the fire-resistant laminate 3C is preferably disposed on the side of the insert 21. By disposing the fire-resistant resin layer _3C1 on the side of the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 can suppress the spread of flames through the insert 21.
In addition, it is preferable that the fire-resistant resin layer _3C1 of the fire-resistant laminate 3C is in contact with the insert 21. By having the fire-resistant resin layer _3C1 in contact with the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 can efficiently suppress the spread of flames through the insert 21.

The heat conductive layer _3C2 of the fire-resistant laminate 3C is provided on the back side of the fire-resistant resin layer _3C1 when viewed from the insert 21 side, and is preferably directly laminated on the fire-resistant resin layer _3C1 . By providing the heat conductive layer _3C2 on the back side of the fire-resistant resin layer _3C1 , the heat generated by a fire can be efficiently conducted to the entire fire-resistant resin layer _3C1 by the heat conductive layer _3C2 , and the entire fire-resistant resin layer _3C1 exhibits uniform fire resistance and fire extinguishing performance, thereby reducing damage due to the uniform fire resistance and fire extinguishing performance.
In addition, it is preferable that the heat conductive layer _3C2 of the fire-resistant laminate 3C is not in contact with the insert 21. Since the heat conductive layer _3C2 is not in contact with the insert 21, in the event of a fire, the fire-resistant resin layer _3C1 does not hinder the flames from spreading through the insert 21.

A cover material 4 that closes one opening 13C is provided at one end _3C3 of the sleeve-shaped fire-resistant laminate 3C. The means for providing the cover material 4 at one end _3C3 of the fire-resistant laminate 3C is not particularly limited, and examples thereof include fixing the cover material 4 by known fixing means such as an adhesive, a pressure-sensitive adhesive, and an adhesive tape. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a noncombustible material, a semi-noncombustible material, or a flame-retardant material, and a flame retardant may be blended into the adhesive, the pressure-sensitive adhesive, or the like.
There are no particular limitations on the material of the cover material 4 as long as it is a material that can close the opening 13C, and examples of the material include a metal-based sheet, a fiber-based sheet, and a resin-based sheet.
The thickness of the cover material 4 is preferably 0.01 to 10 mm, more preferably 0.05 to 5 mm, and even more preferably 0.1 to 1 mm. When the thickness of the cover material 4 is within the above range, it can exhibit flexibility to be bent or curved so as to be able to surround the outer periphery of the insert 21 in close contact therewith, as described below.

After the sleeve-shaped fireproof laminate 3C is placed in the compartment penetration part 15, the cover material 4 provided on one end 3C ₃ of the fireproof laminate 3C extends outward from the penetration hole 13A. As shown in Fig. 5, the cover material 4 is appropriately bent or folded to reduce its diameter, so that the cover material 4 closely surrounds the outer periphery of the insert 21. Then, a string-like member 22 is wound around the surrounding portion of the cover material 4, and the cover material 4 is fixed to the insert 21 by the string-like member 22, so that one opening 13C of the compartment penetration part 15 is covered by the cover material 4.
The string-like member 22 may be any member that can be bent, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled, such as a mould. When a wire member is used, the cover material 4 can be fixed to the insertion body 21 simply by twisting or twisting.

According to the compartment penetration structure of the fifth embodiment of the present invention, the sleeve-shaped fire-resistant laminate 3C prevents communication between the hollow portion 13 and the outside of the partition portion 11, and one opening 13C of the compartment penetration portion 15 is covered by the cover material 4, so that communication between one opening 13C of the compartment penetration portion 15 and the other opening 13D is also prevented. Thus, the compartment penetration structure of the fourth embodiment can provide the compartment penetration portion 15 with an appropriate fireproof structure.
Moreover, according to the compartment penetration processing structure according to the fifth embodiment of the present invention, the sleeve-shaped fire-resistant laminate 3C can be inserted into the compartment penetration part 15 from one of the openings 13C and attached, and then the one of the openings 13C can be covered with the cover material 4. Therefore, the compartment penetration part 15 can be made fireproof with a small number of parts, and all work can be performed from one side (the outer surface 11A side) of the partition part 11, improving workability.

<Other embodiments>
In the above description, the first to fifth embodiments have been shown as the partition penetration processing structure, but the first to fifth embodiments may be appropriately combined. In other words, the embodiments shown in the above description may be appropriately combined, or all of them may be combined.
Furthermore, the compartment penetration treatment structure is not limited to the aspects shown in the above embodiments, and may have any configuration as long as the fireproof material or fireproof laminate is provided in the compartment penetration part. For example, the fireproof material or fireproof laminate may have any configuration as long as it is disposed inside the compartment penetration part or so as to cover the opening of the compartment penetration part.

The fire-resistant material of the present invention is not limited to being used in the compartment penetration structure as described above, but may be used in other ways as long as it constitutes a fire-resistant structure for a building.
The fireproof material or fireproof laminate can also be used by being attached to fittings such as windows, shoji screens, doors, sliding doors, etc. When the fireproof material or fireproof laminate of the present invention is used by being attached to fittings, the fireproof material or fireproof laminate may have a desired shape such as a sheet shape, a block shape, a column shape, etc., and preferably a sheet-shaped fireproof sheet is used.

The present invention will be explained in more detail below with reference to examples, but the present invention is not limited to these.

<Flame retardants>
Aluminum phosphite: APA100, manufactured by Taihei Chemical Industry Co., Ltd. Triphenyl phosphate: TPhP, manufactured by Tokyo Chemical Industry Co., Ltd.

<Heat absorbing agent>
Aluminum hydroxide: BF013, manufactured by Nippon Light Metal Co., Ltd., average particle size 1 μm, thermal decomposition starting temperature 200° C., endothermic heat amount 1,000 J/g
Magnesium hydroxide: Kisuma 10, manufactured by Kyowa Chemical Industry Co., Ltd., average particle size 0.9 μm, thermal decomposition starting temperature 280° C., endothermic heat amount 1,350 J/g

<Thermal Expandable Layered Inorganic Material>
・Thermal expandable graphite: ADT-351, manufactured by ADT

<Thermal conductive material>
Boron nitride (BN): UHP-S2, manufactured by Showa Denko K.K., thermal conductivity 200 W/m·K, average particle size 0.7 μm, density 2.27 g/cm ³
Aluminum oxide (Al ₂ O ₃ ): CB-P02, manufactured by Showa Denko K.K., thermal conductivity 20 W/m·K, average particle size 2 μm, density 3.98 g/cm ³

<Resin>
PVB: Polyvinyl butyral resin, polymerization degree 1,700, acetalization degree 75 mol%, acetyl group amount 3 mol%, hydroxyl group amount 22 mol%

<Dispersant>
Polyether dispersant: ED-400, manufactured by Kusumoto Chemicals Co., Ltd.

<Plasticizer>
Diisodecyl phthalate (DIDP): Special grade reagent, manufactured by Tokyo Chemical Industry Co., Ltd.

<Solvent>
Ethanol (EtOH): Special grade, manufactured by Tokyo Chemical Industry Co., Ltd. Toluene (PhMe): Special grade, manufactured by Tokyo Chemical Industry Co., Ltd. Ethyl acetate (AcOEt): Special grade, manufactured by Tokyo Chemical Industry Co., Ltd.

<Sheet Formation>
<Coating and film formation>
According to the formulation shown in Table 1, a fire-resistant resin composition was obtained by mixing a flame retardant, a heat-absorbing agent, a thermally expandable inorganic material, a thermally conductive material, a resin, a dispersant, a plasticizer, and a solvent in a bead mill ("Ready Mill" manufactured by Imex Co., Ltd.) for 60 minutes. A slurry liquid was prepared by adjusting the viscosity of the obtained fire-resistant resin composition with a solvent. The slurry liquid was applied to the release-treated surface of a release sheet, dried at 60°C for 24 hours, and formed into a sheet by coating film formation. The obtained sheet was used as a fire-resistant member after peeling off the release sheet.

<<Molded body>>
A fire-resistant resin composition was obtained by mixing a flame retardant, a heat-absorbing agent, a thermally expandable inorganic material, a thermally conductive material, a resin, a dispersant, a plasticizer, and a solvent in a bead mill ("Ready Mill" manufactured by Imex Co., Ltd.) for 60 minutes according to the formulation shown in Table 1. The obtained fire-resistant resin composition was fed to a single-screw extruder and extrusion-molded at 50°C to obtain an extrusion molded product. The obtained extrusion molded product was then adjusted to a sheet of the desired thickness in a rolling machine and used as a fire-resistant member.

[Examples 1 to 6, Comparative Examples 1 to 2]
Fire-resistant members (fire-resistant materials or fire-resistant laminates) were obtained by laminating the layer types shown in Table 1 according to the layer configurations shown in Table 2. Each fire-resistant member was evaluated as follows.

<Aspect ratio>
The scale length of the photograph of the thermally expandable graphite was measured using the SEM cross-sectional photograph, and the aspect ratio was calculated by conversion.

<Expansion ratio>
Test pieces (length 100 mm, width 100 mm, thickness 2.0 mm) prepared from the obtained fireproof members of Examples 1 to 5 and Comparative Examples 1 to 3 were fed into an electric furnace and heated at 600° C. for 30 minutes. The thicknesses of the test pieces were then measured, and the expansion ratio was calculated as (thickness of test piece after heating)/(thickness of test piece before heating).

<Residual hardness>
The heated test piece for measuring the expansion ratio was fed to a compression tester (Kato Tech Co., Ltd., "Finger Feeling Tester") and compressed with a 0.25 ^cm2 indenter at a speed of 0.1 cm/sec to measure the breaking stress.

<Shape retention of residue>
The above-mentioned residue hardness is an index of the hardness of the residue after expansion, but since the measurement is limited to the surface part of the residue, it may not be an index of the hardness of the entire residue, so the shape retention was measured as an index of the hardness of the entire residue. The shape retention of the residue was measured by lifting both ends of the test piece whose expansion ratio was measured by hand and visually observing how easily the residue crumbled at that time. When the test piece could be lifted without crumbling, it was evaluated as pass (PASS), and when the test piece collapsed and could not be lifted, it was evaluated as fail (FAIL).

<Fire resistance test>
An opening with a diameter of 160 mm was opened in the concrete frame, and a PVC100 VU pipe (outer diameter 114 mm, thickness 3.1 mm, JIS standard K6741) was passed through it and piped 300 mm below the floor and 500 mm above the floor. The obtained fireproof member was bent into a sleeve shape and installed in the opening. The position of the pipe was adjusted so that each clearance between the sleeve and the pipe was 10 mm or more, and the pipe was heated in a horizontal furnace for 2 hours along the heating curve of ISO834. If the temperature of the penetrating pipe 25 mm above the floor was less than the initial temperature + 180 ° C and no flame broke out through the penetration, it was evaluated as PASS, and if it was more than the initial temperature + 180 ° C or the pipe above the floor broke out through the penetration, it was evaluated as FAIL.

<Adhesion of Residue>
The weight of the sleeve before the fire resistance test and the weight of the sleeve residue remaining in contact with the penetration part after the fire resistance test were measured. The percentage of the sleeve weight remaining after the fire resistance test compared to before the fire resistance test was calculated and used as a measure of adhesion to the concrete structure.

<Impact resistance>
The sleeve was left in an environment of -10°C for one week, and then allowed to drop from a height of 3m onto a concrete floor to check whether the sleeve had any deformation or damage. A test that showed no obvious deformation or damage was rated as PASS, and a test that showed any deformation or damage even once was rated as FAIL.

The measurement results of the expansion ratio, residue hardness, and shape retention of the residue, and the fire resistance test for Examples 1 to 5 and Comparative Examples 1 to 3 are shown in Table 2. In Examples 1 to 5, the thermal expansion material expanded sufficiently, the expansion residue was firmly held, and the fire resistance test was passed. In Comparative Example 3, the residue was not firmly held, and it failed. In Comparative Examples 1 to 3, the expansion residue did not form a heat insulating structure, and the temperature of the above-floor pipes rose, causing holes in the pipes and catching fire, so it failed.

As is clear from the results of the above examples, the present invention provides a fire-resistant resin composition that can continuously suppress temperature rises in the event of ignition due to continuous high temperature conditions during fireproofing of compartment penetrations, and also has fire resistance.

2 Insertion member 3A Fireproof putty 3B Fireproof sheet 3C Fireproof laminate 3C ₁ Fireproof resin layer 3C ₂ Thermally conductive layer 4 Cover material 5 Filler 6 Receiving portion 6A Hole 11 Partition portion 12A, 12B Wall material 13 Hollow portion 13A, 13B Through hole 13C, 13D Opening 15 Compartment penetration portion 21 Insertion body 22 String-shaped member

Claims (8)

A compartment penetration processing structure that is formed in a partition of a building and has a compartment penetration part into which a long penetrating body is inserted, and has a fireproof structure,
A fire-resistant laminate including a fire-resistant resin layer including at least one fire-resistant additive selected from the group consisting of a flame retardant, a heat-absorbing agent, and a thermally expandable layered inorganic material, and a resin, and a heat-conductive layer including a heat-conductive material,
The sleeve-shaped fireproof laminate is provided in the compartment penetration portion so as to contact the partition portion,
A cover material for closing at least one opening of the compartment penetration portion is provided on one end side of the fire-resistant laminate,
A compartment penetration processing structure, wherein the fire-resistant resin layer of the fire-resistant laminate is arranged on the insert side. The compartment penetration structure according to claim 1 , wherein the thermally conductive layer of the fire-resistant laminate is not in contact with the insert. The compartment penetration structure according to claim 1 or 2, wherein the cover material is provided on one end side of the fire-resistant laminate by being in contact with the heat conductive layer. The compartment penetration treatment structure according to any one of claims 1 to 3, wherein the cover material is provided on a portion extending outward from a through hole constituting the compartment penetration portion of the fire-resistant laminate. The compartment penetration structure according to any one of claims 1 to 4 , wherein the fire-resistant resin layer and the heat conductive layer are directly laminated to each other. The compartment penetration processing structure according to any one of claims 1 to 5, wherein the thermally conductive layer has at least one of a first thermally conductive layer containing the thermally conductive material and a resin, and a second thermally conductive layer substantially consisting of the thermally conductive material . The compartment penetration treatment structure according to any one of claims 1 to 6 , wherein the fire-resistant laminate is in a sheet form. The compartment penetration processing structure according to any one of claims 1 to 7 , wherein the thickness of the fire-resistant laminate is 0.5 to 10 mm.