JP6915958B2 - Fireproof fittings - Google Patents

Description

The present invention relates to fitting frames and fittings used for openings of structures such as houses, and more particularly to fireproof fitting frames and fittings constituting window frames of various sash windows, door frames of doors, and the like. ..

Fire protection is one of the performances required for fittings such as windows, shoji screens, doors (that is, doors), doors, bran, and columns used for openings in structures such as houses. , A heat-expandable fire-resistant material is attached to the fittings. Conventionally, a heat-expandable material has been attached to the entire circumference of the frame of a fitting installed in an opening of a structure so that flames do not penetrate. For example, Patent Document 1 describes that a heat-expandable refractory material is inserted into the entire length of a plurality of cavities inside an opening frame of a fireproof resin sash.

Patent No. 4691324

Conventionally, one type of heat-expandable refractory material was used, but in the event of a fire, the fire goes upward, so the temperature of the lower part of the fittings such as sashes and doors does not rise easily, and the heat-expandable refractory material expands. There were times when fire resistance could not be achieved without it. Also, when fittings such as sashes and doors are in the corners of the room, the corners of the fittings are located at the edge of the space where the two walls and the ceiling are separated, so in an environment where the temperature does not rise easily, fire resistance is also high. There were times when I couldn't put it out. Furthermore, once one type of heat-expandable refractory material expands due to heating due to a fire or the like, it is difficult to expand it additionally at another timing. Therefore, for example, even if the frame of the fitting is deformed by heat, the frame Since it is difficult for the heat-expandable refractory material to expand by adding the heat-expandable refractory material in accordance with the deformation of, a gap may be created between the heat-expandable refractory material and the fitting, and the fire resistance may be impaired. there were.

An object of the present invention is to provide a fitting frame and fittings that exhibit better fire protection performance even in an environment where the temperature does not easily rise.

Another object of the present invention is to provide a fitting frame and fitting in which the timing of expansion is controlled.

The present inventors have completed the present invention by arranging a plurality of heat-expandable refractory materials around the frame of the fitting with a sense in order to achieve the above object.

That is, the present invention is as follows.

Item 1. An opening frame body that constitutes a fitting having an opening frame body having an opening, a plate material that closes the opening of the opening frame body, and an outer peripheral frame body that supports the outer periphery of the plate material, and is the opening frame body. An opening frame body characterized in that a first heat-expandable fire-resistant material and a second heat-expandable material that starts expansion at a temperature lower than that of the first heat-expandable material are arranged therein.

Item 2. Item 2. The opening frame body according to Item 1, wherein a second heat-expandable material is arranged at one corner of the opening frame body.

Item 3. Item 2. The opening frame body according to Item 1, wherein a second heat-expandable material is arranged on at least one side of the opening frame body.

Item 4. The opening frame according to claim 3, wherein a second heat-expandable material is arranged on the lower frame.

Item 5. Item 1 characterized in that each side of the opening frame has a cavity extending along the longitudinal direction of each side, and a plurality of heat-expandable refractory materials are arranged in the cavity at intervals. The opening frame body according to any one of the items to 4.

Item 6. An outer peripheral frame that constitutes a fitting having an opening frame having an opening, a plate material that closes the opening of the opening frame, and an outer peripheral frame that supports the outer periphery of the plate material. The outer peripheral frame body is characterized in that a first heat-expandable fireproof material and a second heat-expandable material that starts expansion at a temperature lower than that of the first heat-expandable material are arranged therein.

Item 7. Item 6. The outer peripheral frame according to Item 6, wherein a second heat-expandable material is arranged at one corner of the outer frame.

Item 8. Item 6. The outer peripheral frame according to Item 6, wherein a second heat-expandable material is arranged on at least one side of the outer frame.

Item 9. Item 5 characterized in that each side of the outer peripheral frame has a cavity extending along the longitudinal direction of each side, and a plurality of heat-expandable refractory materials are arranged in the cavity at intervals. The joinery frame according to any one of 8 to 8.

Item 10. A fitting having an opening frame body according to any one of Items 1 to 4 and at least one of the outer peripheral frame bodies according to any one of Items 6 to 9 and a plate material for closing the opening of the frame body.

Item 11. Item 6. The fitting according to Item 10, which is a window or a door.

According to the present invention, better fire protection performance can be imparted regardless of the mounting position of the fitting, and the fire resistance of the structure is improved.

The front view of the fire protection sash which concerns on 1st Embodiment of this invention. FIG. 1 is a cross-sectional view of a main part taken along the line AA of FIG. The schematic front view of the main part explaining the arrangement of the heat-expandable refractory sheet in the opening frame body. The schematic front view of the main part explaining the arrangement of the heat-expandable refractory sheet in a shoji. A schematic front view of a main part showing another example of the arrangement of the heat-expandable refractory sheet in the opening frame body. A schematic front view of a main part showing another example of the arrangement of the heat-expandable refractory sheet in the opening frame body. A schematic front view of a main part showing another example of the arrangement of the heat-expandable refractory sheet in the opening frame body. A schematic front view of a main part showing another example of the arrangement of the heat-expandable refractory sheet in the opening frame body. A schematic front view of a main part showing another example of the arrangement of the heat-expandable refractory sheet in the opening frame body. FIG. 5 is a cross-sectional view of a main part showing another example of the arrangement of the heat-expandable refractory sheet. The front view of the door which concerns on 2nd Embodiment of this invention. (A) A cross-sectional view of a main part in line BB of FIG. 11, and (B) a schematic cross-sectional view showing the fire protection performance of the fire-resistant sheet 15 of FIG. 12 (A) when a fire occurs. The schematic front view which shows the arrangement of the heat-expandable refractory sheet in the opening frame body of the comparative example 1. FIG.

(First Embodiment)
The first embodiment in which the present invention is embodied in a sash will be described with reference to FIGS.

FIG. 1 is a front view of a sliding sash as a fireproof resin sash according to the present embodiment, and FIG. 2 is a cross-sectional view of a main part along the line AA of FIG. In FIGS. 1 and 2, the fireproof resin sash 1 is fixed to a rectangular opening formed in a structure such as a house, and has a rectangular opening frame 10 having an opening on the outer circumference and a rectangular opening frame 10 thereof. It is equipped with two sliding doors 20 and 20 that can be moved in the horizontal direction.

The opening frame 10 as a joinery frame is composed of left and right vertical frame members 11 and 12 and upper and lower horizontal frame members 13 and 14, and the inside surrounded by each frame member 11 to 14 is an opening. .. The two shoji screens 20 as the fitting frame block the opening and have substantially the same structure. From the left and right vertical frame members 21 and 22, and the upper and lower horizontal frame members 23 and 24. It is formed in a rectangular shape, and the vertical stile material on the center side overlaps back and forth to form a mating part. The opening frame body 10 and the shoji screens 20 and 20 are composed of a combination of vertical and horizontal frame members 11 to 14 and vertical and horizontal frame members 21 to 24, which are synthetic resin members, respectively.

As described above, the fireproof resin sash 1 has two shoji sashes 20 and 20 slidably supported on the opening frame body 10, and is a vertical and horizontal frame member constituting the outer peripheral sashes of the shoji sashes 20 and 20. 21 to 24 support a window glass 25 made of iron meshed glass located inside. The window glass 25 constitutes a fire-resistant plate material, and constitutes a partition surface that separates the outside and the inside of the fire-resistant resin sash 1. The refractory plate material is not limited to the window glass having a translucent property, and may be a material having a light-shielding property such as a metal plate material or a caucal plate.

The configuration of the fireproof resin sash 1 of the present embodiment is not particularly limited, and the upper, lower, left and right frame members 11 to 14 and the frame members 21 to 24 constituting the sash are formed of extruded synthetic resin. Any well-known form may be used as long as it has a cavity extending along the longitudinal direction and has a cross-sectional shape orthogonal to the longitudinal direction having a space of one or a plurality of cavities. Further, the synthetic resin used for each frame material and each frame material constituting the sash may be any of hard polyvinyl chloride, ABS resin and the like, but hard vinyl chloride is preferable from the viewpoint of advantageous fire protection performance.

The vertical frame members 11 and 12 constituting the opening frame body 10 are formed by cutting a long member obtained by extruding a synthetic resin such as hard vinyl chloride and penetrating the vertical frame members 11 and 12 in the longitudinal direction. Each of the cavities 11a and 12a is provided. Further, although not shown, the horizontal frame members 13 and 14 constituting the opening frame body 10 also have a cavity extending through the horizontal frame members 13 and 14 in the longitudinal direction.

The left and right vertical timbers 21 and 22 constituting the shoji 20 are formed by cutting a long lumber similarly extruded and molded from a synthetic resin, and have a cavity 21a extending in the longitudinal direction in the cross section. Each of 22a is provided. Further, although not shown, the horizontal timbers 23 and 24 constituting the shoji 20 also have cavities extending in the longitudinal direction. Then, a window glass 25 made of iron meshed glass is fitted in the internal space of the vertical and horizontal frame members. The window glass 25 is located at a step portion of the vertical frame members 21 and 22, and is fixed by a rubber sealing material and a sealing agent 26.

The fireproof resin sash 1 shown in the present embodiment is thermally expandable in the cavities of the opening frame 10, the frame members 11 to 14 which are synthetic resin members constituting the shoji 20, and the stiles 21 to 24. The feature is that a fireproof sheet made of a fireproof material is inserted. That is, a fireproof sheet 15 obtained by cutting a sheet of a heat-expandable fireproof material into a strip shape is inserted into the cavities 11a and 12a of the vertical frame member 11 along the longitudinal direction of the vertical frame member 11. The fireproof sheet 15 has an adhesive layer on one side, is inserted into each of the two cavities of the vertical frame member 11, and is attached by the adhesive layer. Although not shown, a fireproof sheet is similarly inserted into the horizontal frame members 13 and 14 that extend through the horizontal frame members 13 and 14 in the longitudinal direction.

Further, a fireproof sheet 16 obtained by cutting a sheet of a heat-expandable fireproof material into a strip shape is also inserted into the cavities 21a and 22a of the vertical frame members 21 and 22 of the shoji 20. The refractory sheet 16 has a flat plate shape, and is inserted in a state of being in contact with a wall surface parallel to the glass surface of the cavity. Further, although not shown, fireproof sheets are also inserted into the cavities extending in the longitudinal direction in the upper and lower horizontal frame members 23 and 24 of the shoji 20.

In this way, in the cavities of the opening frame 10 and the cavities 20 and 20, a large number of refractory sheets 15 and 16 are arranged in parallel along the surface of the window glass 25 and adhere to the inner wall surface of the cavities. It is in close contact with the layers and forms a fireproof surface.

The refractory sheets 15 and 16 are made by cutting a sheet material having a thickness of several mm, which is a heat-expandable refractory material, into strips, and inserting the refractory sheet along a wall surface parallel to the surface of the hollow window glass 25. There is. Since the heat-expandable refractory material is inserted into the cavity of the synthetic resin member, it may be a molded product that matches the shape and dimensions of the cavity, and can be inserted regardless of the shape and dimensions of the cavity. A shaped or tape-shaped molded body is preferable. The details (composition, etc.) of the heat-expandable refractory materials constituting the refractory sheets 15 and 16 will be described later.

The heat-expandable refractory material constituting the refractory sheets 15 and 16 used in the present embodiment is a material that expands in volume to form an expansion heat insulating layer when exposed to a high temperature such as in a fire, and is a material for fire. A material that prevents the penetration of flames by filling the portion where the synthetic resin members such as the frame materials 11 to 14 and the frame materials 21 to 24 are burnt and burned down by the expansion heat insulating layer of the heat-expandable refractory material. If so, there is no particular limitation. Examples of the heat-expandable refractory material include a molded product prepared from a resin composition containing heat-expandable graphite as a resin component described later.

The heat-expandable refractory material constituting the fire-resistant sheets 15 and 16 is not particularly limited as long as it is a material in which the expansion component fills the portion burned down by burning the synthetic resin member as described above, but is preferably 50 kW / m ^2. It is a material having a volume expansion coefficient of 3 to 50 times after heating for 30 minutes under the heating conditions of. When the volume expansion coefficient is 3 times or more, the expansion component fills the burnt portion of the synthetic resin, and the fire protection performance is exhibited. Further, when the volume expansion coefficient is 50 times or less, the strength of the expansion heat insulating layer is maintained and the effect of preventing the penetration of the flame is exhibited, so the above range is preferable. More preferably, the coefficient of thermal expansion is 5 to 40 times, and even more preferably 8 to 35 times.

FIG. 3 is a schematic front view of a main part for explaining the arrangement of the heat-expandable fire-resistant sheet for explaining the arrangement of the fire-resistant sheet 15 in the opening frame body 10, and only the fire-resistant sheet 15 arranged on the lower side in FIG. 2 is shown. Shown. In the present embodiment, the refractory sheet 15 is a first refractory sheet formed of a first heat-expandable material containing a synthetic resin, a heat-expandable graphite having a first expansion start temperature, and an inorganic filler. It was formed from a second heat-expandable material containing 15A, a synthetic resin, a second heat-expandable graphite having a second expansion start temperature lower than the first expansion start temperature, and an inorganic filler. It is composed of two types of refractory sheets 15 with a second refractory sheet 15B. The second thermally expandable material constituting the second refractory sheet 15B starts expansion at a lower temperature than the first thermally expandable material constituting the first refractory sheet 15A.

More specifically, a second refractory sheet 15B that starts expansion even at a low temperature is arranged at one corner of the opening frame 10, and a second refractory sheet 15B is placed on another part of the opening frame 10. A first refractory sheet 15A that starts expansion at a high temperature is arranged. Specifically, the second refractory sheet 15B is arranged on the upper part of the vertical frame member 11 on the left side and the left part of the horizontal frame member 13 on the upper side, and the rest of the frame material 11 on the left side and the horizontal frame member 13 on the upper side. The first and second refractory sheets 15A are arranged on the vertical frame member 12 on the right side and the horizontal frame member 14 on the lower side. The first refractory sheet 15A and the second refractory sheet 15B are continuously arranged on the four sides of the opening frame body 10, that is, the frame members 11 to 14.

When the upper left of FIG. 3 corresponds to the upper side and the outer side of the building, heat is not easily transferred to one corner of the opening frame 10, but in the event of a fire, the second refractory sheet 15B is more than the first refractory sheet 15A. Since the expansion starts even at a low temperature, the second refractory sheet 15B starts expanding earlier than the case where the first refractory sheet 15A is used in the same place at the time of heating, and the refractory sheets 15A and 15B expand. Demonstrates continuous fire protection on the opening frame 10. Such an opening frame 10 exhibits better fire protection performance even in an environment where the temperature does not easily rise, and the timing of expansion can be controlled by selecting the first refractory sheet 15A and the second refractory sheet 15B.

As shown in FIG. 4, even in the shoji 20 (only one is shown), the refractory sheets 15 and 16 are arranged in the cavities of the vertical and horizontal frame members 21 to 24 constituting the outer peripheral frame. The refractory sheet 16 may be a refractory sheet formed of one kind of thermal expansion material containing a synthetic resin, a heat-expandable graphite, and an inorganic filler, and like the fire-resistant sheet 15, the synthetic resin and the first A first refractory sheet 16A formed from a first heat-expanding material containing a heat-expandable graphite having an expansion start temperature of No. 1 and an inorganic filler, a synthetic resin, and a first temperature lower than the first expansion start temperature. It is composed of a second refractory sheet 16B formed of a heat-expandable material containing a heat-expandable graphite having an expansion start temperature of 2 and an inorganic filler and starting to expand at a temperature lower than that of the first refractory sheet. You may. Even in such a shoji 20, better fire protection performance can be exhibited even in an environment where the temperature does not easily rise, and the expansion timing can be controlled by selecting the first refractory sheet 16A and the second refractory sheet 16B.

The widths of the refractory sheets 15 and 16 may be shorter or longer than the width of the cavity, and may be the same, but if they are long, they may be inserted in a bent or rolled state. The thickness of the fireproof sheets 15 and 16 may be thin or thick as long as the fireproof performance is satisfied, but when deformed, the thickness must be thinner than the insertable thickness.

For fixing the fireproof sheets 15 and 16 in the cavity, in the case of a strip-shaped or tape-shaped molded body, a method using an adhesive or an adhesive, a method of fixing with screws, a foam such as a round shape in the space between the cavity and the sheet. Etc., or a method of injecting a raw material of a foam and then foaming and fixing the foam. Further, in the case of a molded body that matches the shape and dimensions of the cavity, it may be simply inserted as it is, or the fixing method described above may be used.

The heat-expandable refractory material constituting the refractory sheets 15 and 16 is preferably a rigid material from the viewpoint of easy insertion and fixing into the cavity. For example, the durometer hardness of the material forming the heat-expandable refractory material is preferably 65 or more when measured by type A in accordance with JIS K7215. If it is 75 or more, it is more preferable, and if it is 80 or more, it is further preferable. As the durometer hardness increases, the rigidity of the heat-expandable refractory material increases, which not only makes it easier to insert into the cavity, but also makes it easier to fix in the cavity, and the fire-resistant resin sash. Manufacturing can be simplified.

Next, the heat-expandable refractory materials constituting the above-mentioned refractory sheets 15 and 16 will be described in detail. The heat-expandable refractory material is a material that expands by heating, such as a synthetic resin kneaded with expandable graphite, and is usually composed of a synthetic resin such as a thermoplastic resin, a rubber substance, or a thermosetting resin, and expandable graphite. , Including an inorganic filler.

Examples of the thermoplastic resin include polyolefin resins such as polypropylene resins, polyethylene resins, polybutene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene resins, polycarbonate resins, and polyphenylene ether resins. Examples thereof include (meth) acrylic resins, polyamide resins, and polyvinyl chloride resins.

Examples of the rubber substance include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), 1,2-polybutadiene rubber (1,2-BR), styrene-butadiene rubber (SBR), and chloroprene rubber ( CR), nitrile rubber (NBR), butyl rubber (IIR), ethylene-propylene rubber (EPR, EPDM), chlorosulfonated polyethylene (CSM), acrylic rubber (ACM, ANM), epichlorohydrin rubber (CO, ECO), polysulfide Examples thereof include rubber (T), silicone rubber (Q), fluororubber (FKM, FZ), and urethane rubber (U).

Examples of the thermosetting resin include polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.

These resins may be used alone or in combination of two or more. Among these resins, polyolefin-based resins or rubber substances are preferable, and polyethylene-based resins are particularly preferable, from the viewpoint that molding is possible at the expansion temperature or lower when the heat-expandable graphite described later is blended.

Further, the above-mentioned rubber substance is preferable from the viewpoint that a large amount of filler can be blended in order to further improve the fire protection performance.

Further, as described above, the refractory sheets 15 and 16 made of the heat-expandable refractory material are adhered to the resin composition itself in order to be fixed in the cavity of the synthetic resin member or to be bonded to the mold steel member described later. It is preferable to have a property, and examples of the method include adding a tackifier resin, a plasticizer, oils and fats, a low molecular weight compound, and the like to a rubber substance. The tackifying resin is not particularly limited, and for example, rosin, rosin derivative, dammar resin, copal, kumaron-indene resin, polyterpene, non-reactive phenol resin, alkyd resin, petroleum hydrocarbon resin, xylene resin, epoxy resin and the like. Can be mentioned.

Although it is difficult for a plasticizer that imparts adhesiveness to exhibit adhesiveness by itself, the adhesiveness can be improved by using it in combination with the tackifying resin. Examples of the plasticizer include phthalate ester-based plasticizer, phosphoric acid ester-based plasticizer, adipic acid ester-based plasticizer, sebacic acid ester-based plasticizer, ricinoleic acid ester-based plasticizer, polyester-based plasticizer, and epoxy-based plasticizer. Examples include agents and paraffin chloride.

Further, from the viewpoint of increasing the flame retardancy of the resin itself and improving the fire protection performance, a phenol resin and an epoxy resin are preferable. In particular, an epoxy resin is preferable because the selection of the molecular structure is wide and the fire protection performance and mechanical properties of the resin composition can be easily adjusted. The epoxy resin is not particularly limited, but is basically a resin obtained by reacting a monomer having an epoxy group with a curing agent. Examples of the monomer having an epoxy group include a bifunctional glycidyl ether type, a bifunctional glycidyl ester type, and a polyfunctional glycidyl ether type.

Further, another resin may be added to the epoxy resin. As described in Japanese Patent No. 4691324, the epoxy resin may be imparted with flexibility so that it can be inserted into cavities of various shapes or dimensions. The method is described in Japanese Patent No. 4691324. By adjusting the flexibility of the epoxy resin, a molded body having flexibility can be obtained from a hard plate-like material, and the refractory sheets 15 and 16 can be inserted according to the shape and dimensions of various cavities. It becomes.

The expandable graphite contained in the heat-expandable fire-resistant material constituting the fire-resistant sheets 15 and 16 is a conventionally known substance, and powders such as natural scaly graphite, thermally decomposed graphite, and kiss graphite are mixed with concentrated sulfuric acid, nitric acid, and selenic acid. Inorganic acids such as concentrated nitric acid, perchloric acid, perchlorate, permanganate, dichromate, hydrogen peroxide and other strong oxidizing agents to produce graphite interlayer compounds. , It is a crystalline compound that maintains the layered structure of carbon. As the heat-expandable graphite obtained by the acid treatment in this manner, it is preferable to use one neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound or the like.

Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, butylamine and the like. Examples of the alkali metal compound and the alkaline earth metal compound include hydroxides such as potassium, sodium, calcium, barium and magnesium, oxides, carbonates, sulfates and organic acid salts.

The expansion start temperature of the expandable graphite differs depending on the material, and the thermal expansion start temperature having the first expansion start temperature constituting the first refractory sheet 15A and the first expansion start temperature constituting the second refractory sheet 15B. A person skilled in the art may appropriately select a heat-expandable graphite having a second expansion start temperature lower than the temperature. For example, as the heat-expandable graphite constituting the first refractory sheet 15A, CA-60 (expansion start temperature 210 ° C.) manufactured by Air Water Co., Ltd. can be mentioned, and the heat-expandable graphite constituting the second refractory sheet 15B can be mentioned. Examples of graphite include 50LTE-UN (expansion start temperature 170 ° C.) manufactured by Air Water Co., Ltd.

The particle size of the heat-expandable graphite is preferably 20 to 200 mesh. If the particle size is 200 mesh or larger, the degree of expansion of graphite is sufficient for the expanded heat insulating layer to be obtained, and if the particle size is 20 mesh or smaller, the dispersibility when blended with the resin is good and the physical properties are poor. It is good. Examples of commercially available products of heat-expandable graphite include "GREP-EG" manufactured by Tosoh Corporation and "GRAFGUARD" manufactured by GRAFTECH.

It is preferable to further add an inorganic filler to the resin composition constituting the heat-expandable refractory material. When the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and also acts as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and for example, metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide. Water-containing inorganic substances such as aluminum hydroxide and hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate can be mentioned.

In addition to these, as inorganic fillers, calcium salts such as calcium sulfate, gypsum fiber, and calcium silicate; silica, diatomaceous soil, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, active white clay, and sepiolite. , Imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate " MOS ”(trade name), lead zirconate titanate, zinc stearate, calcium stearate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate, various magnetic powders, slag fibers, fly ash, dehydrated sludge, etc. Can be mentioned. These inorganic fillers may be used alone or in combination of two or more. Among the inorganic fillers, hydrous inorganic substances and / or metal carbonates are preferable. Among the water-containing inorganic substances, metal hydroxides such as calcium hydroxide, magnesium hydroxide, and aluminum hydroxide are particularly preferable because they generate a large amount of water and exhibit more fire protection performance. Among the metal carbonates, metal carbonates belonging to Group II of the periodic table, for example, calcium carbonate, magnesium carbonate, zinc carbonate, and strontium carbonate are particularly preferable because a carbonic acid reaction is likely to occur.

The particle size of the inorganic filler is preferably 0.5 to 100 μm, more preferably 1 to 50 μm. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so that the inorganic filler has a small particle size, but when it is 0.5 μm or more, the dispersibility is good. When the amount added is large, the viscosity of the resin composition increases and the moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. A large diameter is preferable, but a particle size of 100 μm or less is desirable from the viewpoint of the surface properties of the molded product and the mechanical properties of the resin composition.

Examples of the inorganic filler include "Heidilite H-31" (manufactured by Showa Denko Co., Ltd.) having a particle size of 18 μm for aluminum hydroxide, "B325" (manufactured by ALCOA) having a particle size of 25 μm, and calcium carbonate having a particle size. Examples thereof include 1.8 μm “Whiten SB Red” (manufactured by Bikita Powder Industry Co., Ltd.) and “BF300” (manufactured by Bikita Powder Industry Co., Ltd.) having a particle size of 8 μm.

In the resin composition constituting the heat-expandable refractory material, a phosphorus compound may be further added in addition to each of the above components in order to increase the strength of the expansion heat insulating layer and improve the fire protection performance. The phosphorus compound is not particularly limited, and for example, various phosphoric acid esters such as red phosphorus; triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresil diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; melamine polyphosphate; compounds represented by the following chemical formula (1) can be mentioned. Of these, red phosphorus, ammonium polyphosphate, and the compound represented by the following chemical formula (1) are preferable from the viewpoint of fire protection performance, and ammonium polyphosphate is more preferable from the viewpoint of performance, safety, cost, and the like. ..

In the chemical formula (1), R1 and R3 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 is 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 a carbon number of carbon atoms. Represents 6 to 16 aryloxy groups.

As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of moisture resistance and safety such as not spontaneously igniting during kneading, those in which the surface of the red phosphorus particles is coated with a resin are preferably used. Ammonium polyphosphate is not particularly limited, and examples thereof include ammonium polyphosphate and melamine-modified ammonium polyphosphate. Ammonium polyphosphate is preferably used from the viewpoint of handleability and the like. Examples of commercially available products include "AP422" and "AP462" manufactured by Clariant AG, "FR CROS 484" and "FR CROS 487" manufactured by Budenheim Ibica.

The compound represented by the chemical formula (1) is not particularly limited, and for example, methylphosphonate, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonate, propylphosphonate, butylphosphonic acid, 2-methylpropylphosphonate, t- Butylphosphonic acid, 2,3-dimethyl-butylphosphonate, octylphosphonate, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphonate, methylethylphosphonate, methylpropylphosphinic acid, diethylphosphonate, dioctylphosphonate, phenylphosphine Acids, diethylphenylphosphonates, diphenylphosphonates, bis (4-methoxyphenyl) phosphonates and the like can be mentioned. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy, although it is expensive. The phosphorus compounds may be used alone or in combination of two or more.

When the phosphorus compound is exposed to a high temperature such as a fire, it changes to a polyphosphoric acid-based compound, which acts as an inorganic binder and exerts an effect of improving the strength of the expanded heat insulating layer. Among the above-mentioned metal carbonates, metal carbonates belonging to Group II of the periodic table, for example, calcium carbonate, magnesium carbonate, zinc carbonate, and strontium carbonate are metal carbonates when used in combination with the phosphorus compound, particularly ammonium polyphosphate. Since the temperature of the decarbonation reaction of the above is lowered, the formation of the expanded heat insulating layer is promoted. Further, when the compound is used in combination, the effect of promoting the change of the phosphorus compound into a polyphosphoric acid-based compound and further improving the strength of the expanded heat insulating layer is exhibited. In particular, the combined use of ammonium polyphosphate and calcium carbonate is preferable because both of the above effects are most exhibited.

In the resin composition constituting the heat-expandable refractory material, the blending amount of the heat-expandable graphite is preferably 10 to 300 parts by weight with respect to 100 parts by weight of the resin component. When the blending amount is 10 parts by weight or more, the volume expansion coefficient is low and the synthetic resin member constituting the resin sash exhibits fire protection performance so as to fill the burnt-out part, and when it is 300 parts by weight or less, the mechanical strength is maintained. .. More preferably, it is 20 to 250 parts by weight.

In the resin composition, the blending amount of the inorganic filler is preferably 30 to 400 parts by weight with respect to 100 parts by weight of the resin component. When the blending amount is 30 parts by weight or more, the heat capacity is high and sufficient fire protection performance is obtained, and when the compounding amount is 400 parts by weight or less, the mechanical strength is maintained. More preferably, it is 40 to 350 parts by weight.

When a phosphorus compound is added to the resin composition, the blending amount of the phosphorus compound is 30 to 300 parts by weight with respect to 100 parts by weight of the resin component. When the blending amount is 30 parts by weight or more, the effect of improving the strength of the expanded heat insulating layer is exhibited, and when it is 300 parts by weight or less, the mechanical strength is maintained. More preferably, it is 40 to 250 parts by weight.

The total amount of the heat-expandable graphite and the inorganic filler is preferably 40 to 500 parts by weight with respect to 100 parts by weight of the resin component. When the total amount is 40 parts by weight or more, a sufficient expansion heat insulating layer is obtained, and when the total amount is 500 parts by weight or less, the mechanical strength is maintained. More preferably, it is 70 to 400 parts by weight.

When a phosphorus compound is further added, the total amount of the phosphorus compound, the heat-expandable graphite and the inorganic filler is preferably 70 to 500 parts by weight with respect to 100 parts by weight of the resin component. When the total amount is 70 parts by weight or more, a sufficient expansion heat insulating layer is obtained, and when the total amount is 500 parts by weight or less, the mechanical strength is maintained. More preferably, it is 100 to 400 parts by weight.

Further, in the resin composition, as long as the physical properties are not impaired, antioxidants such as phenol-based, amine-based and sulfur-based, metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants and softeners are added. , Pigments and the like may be added. Further, a general flame retardant may be added, and the fire protection performance can be improved by the combustion suppressing effect of the flame retardant.

The molded body of the resin composition constituting the heat-expandable fire-resistant material is formed by molding after preparing the kneaded product of the above-mentioned resin composition, thereby forming a molded body suitable for the shape and size of the cavity, and in the form of a sheet or a roll. A strip-shaped or tape-shaped molded product can be obtained by producing a shaped molded product and then cutting the molded product. Further, a method may be used in which a solvent is added at the time of kneading and then the solvent is volatilized after molding.

In the kneaded product of the resin composition, each of the above components is extruded, a hamburger mixer, a kneader mixer, a kneading roll, etc., and in the case of a thermosetting resin such as an epoxy resin, a Raikai machine, a planetary stirrer, etc. , Can be obtained by using a known kneading device. Further, in the case of a two-component thermosetting resin, particularly an epoxy resin, a kneaded product of each of the two liquids and a filler is prepared separately by the above-mentioned kneading method, and a plunger pump, a snake pump, a gear pump, etc. are used. Each kneaded product may be supplied and mixed with a static mixer, a dynamic mixer, or the like to prepare a kneaded product.

As a method for molding the resin composition, the kneaded product can be molded by a known method such as press molding, calendar molding, extrusion molding, injection molding or the like. Further, as a molding method of a two-component thermosetting resin, particularly an epoxy resin, a known method such as roll molding by SMC (Sheet Molding Compound) or coater molding by a roll coater or a blade coater is appropriately used according to the shape. Can be used.

The method for curing the thermosetting resin, particularly the epoxy resin, is not particularly limited, and the method is continuously molding and curing such as heating by the press or roll, or a heating furnace in a molding line, or the thermosetting resin is put into a heating furnace after molding. It can be carried out by a known method such as a method for performing. Further, in the case of molding using a solvent, the solvent can be volatilized by the same method as described above.

As a method for molding the sheet-shaped or roll-shaped molded product formed by the above-mentioned molding method into strips or tapes, known methods such as cutting, slitting, and round-cutting can be used. When the molded body of the resin composition is strip-shaped or tape-shaped, the thickness is preferably 0.1 to 6 mm. When the thickness is 0.1 mm or more, sufficient fire protection performance can be exhibited due to the thickness of the expansion heat insulating layer formed by heating. Further, if it is 6 mm or less, it can be easily inserted into the cavity. More preferably, the thickness is 0.3 to 4 mm.

The resin composition may be laminated with a net or mat made of a nonflammable fibrous material in order to further improve the strength of the expanded heat insulating layer. As the net or mat made of nonflammable fibrous material, one made of inorganic fiber or metal fibrous material is preferable, and for example, a woven cloth of glass fiber (glass cloth, roving cloth, continuous strand mat, etc.) or a non-woven fabric (nonwoven fabric) ( Chopped strand mats, etc.), ceramic fiber woven fabrics (ceramic cloth, etc.) or non-woven fabrics (ceramic mats, etc.), carbon fiber woven fabrics or non-woven fabrics, nets or mats formed from laths or wire meshes are preferably used.

Of these nets or mats, glass fiber woven fabrics or non-woven fabrics are preferable from the viewpoint of ease and cost in producing a heat-expandable refractory material, and glass cloth is more preferable because glass is not less scattered during production. preferable. Further, the glass cloth may be treated with a melamine resin, an acrylic resin, or the like because the handleability is improved and the adhesiveness with the resin is improved. Further, in the case of a thermosetting resin, particularly an epoxy resin, the net or mat may be impregnated in the resin composition.

A net or mat made of a nonflammable fibrous material weighs 5 to 2000 g per ^{1 m 2.} If the weight per 1 m ² is less than 5 g, the effect of improving the shape retention of the expanded heat insulating layer is reduced, and if it exceeds 2000 g, the sheet becomes heavy and construction becomes difficult. More preferably, it is 10 to 1000 g. The thickness of the net or mat made of this nonflammable fibrous material is preferably 0.05 to 6 mm. When the thickness is 0.05 mm or more, the heat-expandable refractory material can withstand the expansion pressure when it expands. Further, when the thickness is 6 mm or less, it is easy to insert the heat-expandable refractory material in a bent or rolled state. More preferably, it is 0.1 to 4 mm.

In the heat-expandable refractory material, a base material layer may be laminated on one side or both sides of a molded product of the resin composition for the purpose of improving workability and strength of the expansion layer. Materials used for the base material include, for example, cloth, non-woven fabric made of polyester, polypropylene, etc., paper, plastic film, split cloth, glass cloth, aluminum glass cloth, aluminum foil, aluminum vapor deposition film, aluminum foil laminated paper, and , Laminates of these materials and the like. Among these base material layers, polyethylene laminated polyester non-woven fabric is advantageous in terms of fire protection performance because it is easy to apply or apply an adhesive or adhesive, so aluminum foil laminated paper and aluminum glass cloth are preferable. The thickness of the base material layer may be any as long as it does not affect the fire protection performance or construction, but is preferably 0.25 mm or less.

Further, the heat-expandable refractory material may be formed by laminating a laminate of a net or mat made of a nonflammable fibrous material and a base material layer on a sheet surface made of a resin composition. Examples of the laminated body include an aluminum glass cloth or a laminated body of a poly film and a glass cloth. Examples of the method of laminating or impregnating the net or mat made of the base material layer or the nonflammable fibrous material include a method of integrating at the stage of molding the resin composition.

When an adhesive or adhesive is applied to the heat-expandable fireproof material in advance at the time of coating or construction and fixed in the cavity of the synthetic resin member, the adhesive or adhesive used is the resin of the synthetic resin member. Any material may be used as long as it adheres or adheres, and examples thereof include acrylic type, epoxy type, and rubber type. Further, when a base material having an adhesive or an adhesive layer is laminated on the molded body in advance, it may be laminated at the time of molding, or a base material having an adhesive or an adhesive on both sides may be laminated on the molded body. ..

Since the heat-expandable fire-resistant material has excellent fire-prevention performance as described above, it is possible to reduce the amount of the heat-expandable material required to exhibit the fire-prevention performance. It is possible to reduce the cost. Further, as described above, a strip-shaped or tape-shaped molded product can be easily manufactured by using a known technique, and can be easily inserted regardless of the shape and dimensions in the cavity, and a fireproof resin can be easily produced. It becomes possible to manufacture sashes.

In the fireproof resin sash 1 of the present embodiment configured as described above, the fireproof sheets 15 and 16 made of the heat-expanding fireproof material are placed in the cavity of the resin member made of synthetic resin along the surface of the window glass or the like. By selecting and inserting the refractory surface so that it is formed, the expanded heat insulating layer of the refractory sheet fills the part where the resin part of the synthetic resin member burns and burns in the event of a fire, and the flame penetrates and heat. Can be prevented from entering.

When a fire breaks out on the indoor side or the outdoor side of the fireproof resin sash 1, the heat of the fire heats the fireproof sheets 15 and 16 inserted in the cavity of the synthetic resin member. All surfaces of the refractory sheet are arranged in parallel along the window glass 25, and when the refractory resin sash 1 is viewed from a direction perpendicular to the window glass 25, for example, most of the area is occupied by the refractory sheets 15 and 16. Therefore, the fireproof heat insulating layer formed by thermal expansion is formed on almost the entire surface without any gaps, and partial weak points are eliminated to stabilize the fireproof performance.

Further, since the refractory sheets 15 and 16 face the heat source of the fire on a wide surface, the heat is efficiently transferred and the refractory sheets expand rapidly. Therefore, in the event of a fire, the fire protection performance can be quickly exhibited. That is, when the refractory sheet is arranged perpendicular to the partition surface, heat such as a fire is only transmitted from the end surface of the refractory sheet, and the thermal expansion is slowed down, so that the fire protection performance cannot be exhibited quickly. Allows rapid thermal expansion.

Further, the fireproof sheets 15 and 16 which are the heat-expandable refractory materials and the window glass 25 made of the iron meshed glass which is the fireproof plate material are configured to cover the opening of the fireproof resin sash 1. Is covered with a fire-resistant surface, so that local weak points in the event of a fire can be removed, and fire protection performance can be improved. If the refractory sheet 15 itself has adhesiveness or is coated with an adhesive on one side, when it is inserted into the cavity of the synthetic resin member, it can adhere to the inner wall surface of the cavity and the construction becomes easy. ..

By using a heat-expandable refractory material having a high coefficient of thermal expansion and a strong adiabatic expansion layer, it is possible to reduce the number of heat-expandable refractory materials to be inserted, and further low cost can be achieved. Further, by using a fireproof sheet of a molded product made of a resin composition, a strip-shaped or tape-shaped molded product can be easily manufactured by using a known technique, and can be easily inserted regardless of the shape and size in the cavity. This makes it possible to easily manufacture a fireproof resin sash.

Up to this point, the present invention has been described by taking the first embodiment as an example, but the present invention is not limited to this, and various modifications such as the following are possible.
-In the embodiment of FIG. 3, the second fireproof sheet 15B is arranged on the upper part of the vertical frame member 11 on the left side and the left part of the horizontal frame member 13 on the upper side, but only one of them is the second fireproof material. The sheet 15B may be arranged and the other may be the first refractory sheet 15A. In this case as well, it can be said that the fireproof sheet 15B is arranged at one corner of the opening frame body 10.
-In the embodiment of FIG. 3, the first refractory sheet 15A and the second refractory sheet 15B are continuously arranged on the frame members 11 to 14 on the four sides of the opening frame body 10, but are shown in FIG. As a result, the refractory sheets 15A and B may be arranged so as to be spaced apart from each other in the longitudinal direction of the frame members 11 to 14 on each side. In this case, if the distance between the two adjacent refractory sheets 15A and B is too large, the fire will pass through during a fire and the fire protection performance will be impaired. However, preferably, the refractory sheets 15A and B expand during heating. The space between the two adjacent fireproof sheets is filled, and the size is set so that the fireproof sheets come into contact with each other. However, since the opening frame 10 itself has fire resistance, it is included in the scope of the present invention even when the space between two adjacent fire resistant sheets cannot be filled. In one embodiment, the total length of a plurality of heat-expandable refractory sheets arranged on each side of the frame or each frame material is 40% or more, 50% or more, 60% or more of the total length of the frame. , 70% or more, or 80% or more in length.
-In the embodiment of FIG. 3, the second refractory sheet 15B is arranged on the upper part of the vertical frame member 11 on the left side and the left part of the horizontal frame member 13 on the upper side, but another frame of the opening frame body 10. The second refractory sheet 15B may be arranged at the position of the lumber. For example, as shown in FIG. 6, the second refractory sheet 15B is arranged on the upper horizontal frame member 13 and the lower horizontal frame member 14, and the first refractory sheet 15A is arranged on the left and right vertical frame members 11 and 12. May be done. The first refractory sheet 15A on the frame members 11 and 12 and the second refractory sheet 15B on the frame members 13 and 14 are continuously arranged in an annular shape. When a fire breaks out, the fire goes upward, so even if the temperature on the lower side of the sash is low, the temperature of the second refractory sheet 15B on the lower horizontal frame member 14 is lower than that of the first refractory sheet 15A. It starts to expand and exhibits better fire protection performance. Further, the second refractory sheet 15B of the upper horizontal frame member 13 may be changed to the first refractory sheet 15A, and a plurality of refractory sheets 15A and 15B may be provided on one frame material as shown in FIG. The refractory sheets of the above may be arranged apart from each other. Such an opening frame 10 also exhibits better fire protection performance even in an environment where the temperature does not easily rise, and the expansion timing can be controlled by selecting the first refractory sheet 15A and the second refractory sheet 15B. ..
As shown in FIG. 7, the second fireproof sheet 15B is arranged on the lower horizontal frame member 14, and the first fireproof sheet is placed on the three sides of the upper horizontal frame member 13 and the left and right vertical frame members 11 and 12. Sheet 15A may be arranged. In this figure, one continuous refractory sheet 15A and 15B are arranged on the upper and lower horizontal frame members 13 and 14, respectively, and a plurality of refractory sheets 15A are arranged on the left and right vertical frame members 11 and 12 at intervals. The refractory sheet 15 on each of the left and right vertical frame members 11 and 12 is shown in a state of being continuous with the refractory sheet on the horizontal frame members 13 and 14 and separated in the vertical direction. One continuous refractory sheet 15A may be arranged on the materials 11 and 12, and a plurality of discontinuous refractory sheets 15A and 15B are arranged on each of the upper and lower horizontal frame members 13 and 14 at intervals. You may. The length of the fireproof sheet 15 on the upper and lower horizontal frame members 13 and 14 shall be 40% or more, 50% or more, 60% or more, 70% or more, or 80% or more of the total length of the frame material. Is preferable. In one embodiment, the total length of the plurality of heat-expandable refractory sheets arranged on the vertical frame members 11 and 12 is 40% or more, 50% or more, 60% or more, 70% or more of the total length of the frame material. Alternatively, the length is 80% or more, but the length is not limited to this. Even if the surfaces of all the frame materials are not covered with expansion materials in the event of a fire, the frame itself has some degree of fire resistance. If pasted, it will exhibit fire resistance. In addition, heat dissipation can be ensured.
As shown in FIG. 8, in addition to the lower horizontal frame member 14, a second refractory sheet 15B may be further arranged below the left and right vertical frame members 11 and 12.
As shown in FIG. 9, the second refractory sheet 15B is attached to the upper part of the vertical frame member 11 on the left side, the left part of the upper horizontal frame member 13, and the lower horizontal frame member 14, and the second fireproof sheet. 15B may be arranged.
As for the refractory sheets 15 on each of the frame members 11 to 14, one refractory sheet 15 may be continuously arranged, or a plurality of refractory sheets 15 may be arranged at intervals. Further, the fireproof sheet 15 on a certain side may or may not be continuous with the fireproof sheet 15 on the adjacent side.
-The arrangement of the fireproof sheet 15 and the arrangement of the fireproof sheet 16 may be the same or different.
The position where the fireproof sheet 15 is arranged is not limited to the position extending in the longitudinal direction of the frame members 11 to 14 in the cavities of the frame members 11 to 14. For example, a place where a resin part (piece member) is provided on the frame material 11 to 14 of the sash 1, or a defective part (hole with a screw) of the frame material 11 to 14 when the sash 1 is an aluminum sash in particular. Since it is easy for fire to pass through the open portion or the portion with a notch), it is desirable to preferentially arrange the fireproof sheet 15 around the portion 15 cm above and below the open portion. Further, the refractory sheet 15 may be arranged on the outer surface of the frame members 11 to 14. If it is attached to the outer surface of the frame members 11 to 14 at a position that fills the space between the opening frame body 10 and the shoji 20 during heating, the fitting is provided with fire protection performance.
The arrangement pattern of the refractory sheet 16 is not limited to that shown in FIG. 4, and at least one of the pair of shoji screens 20 has a pattern similar to that of the refractory sheet 15 such as another example of the refractory sheet 15 in FIG. A plurality of refractory sheets 16 may be arranged on at least one side, that is, on the frame material forming at least one side of the four frame materials 21 to 24 constituting the shoji 10.
The position where the fireproof sheet 16 is arranged is not limited to the position extending in the longitudinal direction of the frame members 21 to 24 in the cavities of the frame members 21 to 24. For example, since it is easy for fire to pass through the defective parts (for example) in the stiles 21 to 24 of the shoji 20 such as the screw holes for attaching the keys and handles, fireproof sheets are placed around 15 cm above and below the missing parts (for example). It is desired that 16 be preferentially arranged.
-Each of the refractory sheets 15 does not have to have the same shape and the same size, and may have a different shape and / or a different same size.
In place of or in addition to the refractory sheet 15 shown in FIG. 2, as shown in FIG. 10, the cavities 11a and 12a of the vertical frame members 11 and 12 and the cavities of the horizontal frame members 13 and 14 (not shown). The refractory sheet 15'may be inserted in the wall surface perpendicular to the glass surface of the window glass 25. Like the fireproof sheet 15, the fireproof sheet 15'consists of a first fireproof sheet 15A formed of a first heat-expandable material and a second fireproof sheet 15B formed of a second heat-expandable material. It is a flat plate-shaped heat-expandable refractory material. The refractory sheet 15'can be arranged on at least one side of the opening frame 10 made of frame members 11-14. For example, the fireproof sheet 15'is arranged on the frame members 11 to 14, the fireproof sheet 15B is arranged on at least one of the upper and lower horizontal frame members 13 and 14, and the first fireproof sheet 15A is arranged on the left and right vertical frame members 11 and 12. Is placed.
-The present invention includes not only fireproof resin sashes, but also sashes formed of metal, wood, or a composite material consisting of at least two of metal, wood, and resin, sliding doors, doors (that is, doors), and doors. , Bran, and fittings such as sashes.
(Second Embodiment)
FIGS. 11 and 12 show a second embodiment in which the present invention is embodied in a fireproof door. 11 is a schematic view showing an example of a fire protection door, FIG. 11 (A) is a cross-sectional view of a main part in line BB of FIG. 11, and FIG. 12 (B) shows FIG. 11 (A) when a fire occurs. It is a schematic cross-sectional view which shows the fire protection performance of the fire resistance sheet 15.

In FIG. 11, the fireproof door 2 includes a rectangular frame 30 having an opening, and a door body 40 as a fireproof plate material that rotates inside the rectangular frame 30 via a hinge 35. The door body 40 has a handle 42. In FIG. 11, the upper left corresponds to the upper side and the outer side of the building.

The frame body 30 as a joinery frame body is composed of left and right vertical frame materials 31 and 32 and upper and lower horizontal frame materials 33 and 34, and the inside surrounded by each frame material 31 to 34 is an opening. With reference to FIGS. 11 and 12 (A), fireproof sheets 15 are arranged along the longitudinal direction of the frame members 31, 32, 33, 34 in each of the frame members 31, 32, 33, 34 of the frame body 30. ing. The arrangement of the plurality of refractory sheets 15 is as described in the first embodiment described above.

As shown in FIG. 12B, when a fire occurs from the direction of the arrow, the refractory sheet 15 expands due to heat and closes the gap 36. As a result, the intrusion of fire and smoke from between the door body 40 and the frame 30 is reduced or prevented, and the fire resistance is greatly improved.

Also in the second embodiment, the arrangement of the refractory sheets 15A and 15B can be transformed into various embodiments as described in another example of the first embodiment.

All patent applications and literature disclosures cited herein are incorporated herein by reference in their entirety.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

1. 1. Production of Heat-Expandable Fireproof Sheets Bisphenol F-type epoxy monomer (“E807” manufactured by Yuka Shell Co., Ltd.) or urethane-modified Bisphenol A-type epoxy monomer (“E292” manufactured by Yuka Shell Co., Ltd.), in the amounts shown in Table 1. Diamine-based curing agent ("EKFL052" manufactured by Yuka Shell Co., Ltd.), heat-expandable graphite ("GREP-EG" manufactured by Toso Co., Ltd.), ammonium polyphosphate (Sumisafe P, manufactured by Sumitomo Chemical Co., Ltd.), melamine polyphosphate (MPP-A) , Sanwa Chemical Co., Ltd.) and calcium carbonate (“Whiten BF-300” manufactured by Bihoku Powder Co., Ltd.) were kneaded with a kneading roll to obtain a fire-resistant resin composition. The obtained refractory resin composition was pressed by press molding at 150 ° C. for 15 minutes to be cured to obtain a 1.6 mm thick heat-expandable refractory sheet used for evaluation of fire resistance and shape retention (No. 1). 1 fireproof sheet 15A).

Next, a heat-expandable refractory sheet having a thickness of 1.6 mm was obtained in the same manner except that 50LTE-UN manufactured by Air Water Inc. was changed to GREP-EG and the pressing conditions were set to 120 ° C. A second refractory sheet 15B) having a lower thermal expansion start temperature than the refractory sheet 15A of 1.

2. Fire resistance test For iron doors (height 2500 mm x width 850 mm, door thickness 40 mm, door ^{core material paper honeycomb structure (1.2 kg / m 2} ), thickness of iron plates on both sides of the core material 0.6 mm each) The fireproof sheet prepared in "1. Manufacture of heat-expandable fireproof sheet" having a width of 15 mm was attached as shown in the figure.

In the first embodiment, as shown in FIG. 13, the second fireproof sheet 15B is attached to the upper horizontal frame member 33 of the door frame 30 and the upper ends of the left and right vertical frame members 31 and 32, and the left and right vertical frames are vertically attached. The first refractory sheet 15A was attached to the lower ends of the frame members 31 and 32 and the lower horizontal frame member 34.

Further, in the second embodiment, as shown in FIG. 7, the first fireproof sheet 15A is attached to the upper horizontal frame member 33 of the door frame 30 and the upper ends of the left and right vertical frame members 31 and 32, and the lower one is attached. The second fireproof sheet 15B was attached to the horizontal frame member 34 on the side.

Further, in Comparative Example 1 (positive control), the first refractory sheet 15A was attached to the entire circumference of all four sides of the frame without any gaps.

A 60-minute heating test was performed on both sides of each door according to the ISO834 curve. In 60 minutes, 1. ~ 3. Those that met all three judgments were marked as ○ (passed). 1. At the upper end of the horizontal frame member 33 on the upper side of the door frame 30 and the left and right vertical frame members 31 and 32. There is no continuous flame for 10 seconds or more on the back side of the heating. There is no continuous flame eruption for 10 seconds or more on the back side of the heating. As a result of no cracks, damages, gaps, etc., the doors met the fire resistance acceptance criteria after 60 minutes in both the outdoor side and indoor side heating tests in both Examples 1 and 2 and Comparative Example 1 (Table 2). Further, in Examples 1 and 2, since the second refractory sheet 15B expands faster than in Comparative Example 1, deformation such as warpage of the door, which is a test body, is suppressed.

1 ... Fireproof resin sash as fittings, 2 ... Fireproof doors as fittings, 10, 30 ... Opening frame as frame, 20 ... Outer frame as frame, 11a , 12a, 21a, 22a ... Cavity, 15, 15'... Fireproof sheet as a heat-expandable fireproof material, 15A, 16A ... First fireproof sheet, 15B, 16B ... Second fireproof Sheet, 25 ... Window glass as a plate material, 40 ... Door body as a plate material, 11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34 ... Frame ..

Claims (6)

An opening frame body that constitutes a fitting having an opening frame body having an opening, a plate material that closes the opening of the opening frame body, and an outer peripheral frame body that supports the outer periphery of the plate material, and is the opening frame body. Is composed of left and right vertical frame materials and upper and lower horizontal frame materials.
A first heat-expandable refractory material and a second heat-expandable refractory material that starts expansion at a temperature lower than that of the first heat-expandable refractory material are arranged in the opening frame.
In the lower horizontal frame material, the first heat-expandable refractory material and the second heat-expandable refractory material are arranged along the longitudinal direction of the frame material .
A second heat-expandable refractory material is placed under the left and right vertical frame materials at the two corners of the opening frame body formed by contacting the lower parts of the left and right vertical frame materials and the lower horizontal frame material. An opening frame body characterized by being made. The left and right vertical frame members and the upper and lower horizontal frame members have cavities extending along the longitudinal direction of each frame member, and in the same cavity, the first heat-expandable refractory material and the second heat-expandable material. The opening frame body according to claim 1, wherein the refractory materials are arranged at intervals along the longitudinal direction of the frame material. An outer peripheral frame that constitutes a fitting having an opening frame having an opening, a plate material that closes the opening of the opening frame, and an outer peripheral frame that supports the outer periphery of the plate material. Is composed of left and right vertical stiles and upper and lower horizontal stiles,
A first heat-expandable refractory material and a second heat-expandable refractory material that starts expansion at a temperature lower than that of the first heat-expandable refractory material are arranged on the outer peripheral frame.
Oite the lower horizontal rail members of the a first thermal expansion fireproof material, and the second thermal expansion fireproof material is disposed along the longitudinal direction of the rail members,
At the two corners of the outer peripheral frame formed by contacting the lower parts of the left and right vertical stiles and the lower horizontal stile, a second heat-expandable refractory material is arranged under the left and right vertical stiles. An outer frame body characterized by being made. The left and right vertical stiles and the upper and lower horizontal stiles have cavities extending along the longitudinal direction of each stile, and in the same cavity, the first heat-expandable refractory material and the second heat-expandable material. The outer peripheral frame according to claim 3, wherein the refractory materials are arranged at intervals along the longitudinal direction. A fitting having an opening frame according to claim 1 or 2, at least one of the outer peripheral frames according to claim 3 or 4, and a plate material that closes the opening of the frame. The fitting according to claim 5, which is a window or a door.

Images