JP7728538B2 - Fire-extinguishing laminate and method for manufacturing the same - Google Patents

Description

The present invention relates to a fire-extinguishing laminate and a method for manufacturing the fire-extinguishing laminate.

An automatic fire extinguishing device is known that has a bag made of a synthetic resin film and a fire extinguishing agent sealed within the bag (see, for example, Patent Document 1).

International Publication No. 2018/012503

However, the device described in Cited Document 1 does not have sufficient resistance to impacts caused by explosions or other events during a fire.

This disclosure was made in light of the above circumstances, and aims to provide a fire-extinguishing laminate that is resistant to impacts such as explosions during a fire. It also aims to provide a method for manufacturing such a fire-extinguishing laminate.

A fire-extinguishing laminate according to one aspect of the present disclosure comprises a fiber layer containing organic or inorganic fibers with high strength and heat resistance, and a resin layer, wherein at least one of the fiber layer and the resin layer contains a fire-extinguishing agent component that generates an aerosol upon combustion.

By placing the above-mentioned fire-extinguishing laminate in an area where there is a risk of fire, the heat generated during or before ignition can instantly fill the surrounding area with the aerosol fire-extinguishing agent. Furthermore, even in the event of an explosion or other shock following ignition, the above-mentioned fire-extinguishing laminate is unlikely to lose its fire-extinguishing function. This allows the fire to be extinguished in a short time and prevents the fire from spreading to the surrounding area. Furthermore, since the above-mentioned fire-extinguishing laminate can be extinguished in its initial stage without direct human intervention, it also offers excellent safety benefits.

In one embodiment, the fiber layer may contain at least one fiber selected from the group consisting of carbon fiber, glass fiber, metal fiber, and ceramic fiber.

In one embodiment, the thickness of the fiber layer may be 0.02 to 2.0 mm.

In one embodiment, the resin layer may contain at least one resin selected from the group consisting of urethane resin, epoxy resin, silicone resin, vinyl chloride resin, polyolefin resin, and polyester resin.

According to one aspect of the present disclosure, a method for producing a fire extinguishing laminate is any of the following.
The manufacturing method includes the steps of: impregnating a fiber layer containing organic or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing agent component that generates an aerosol upon combustion; drying the impregnated first liquid composition; applying a second liquid composition containing the liquid component and a resin onto the fiber layer; and drying the applied second liquid composition.
The manufacturing method includes the steps of applying a third liquid composition containing a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin onto a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance, and drying the applied third liquid composition.
The manufacturing method includes the steps of: impregnating a fiber layer containing organic or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing component that generates an aerosol upon combustion; drying the impregnated first liquid composition; applying a third liquid composition containing the liquid component, the fire extinguishing component that generates an aerosol upon combustion, and a resin onto the fiber layer; and drying the applied third liquid composition.

This disclosure makes it possible to provide a fire-extinguishing laminate that is resistant to impacts such as explosions during a fire. This disclosure also makes it possible to provide a method for manufacturing such a fire-extinguishing laminate.

This disclosure provides a fire-extinguishing laminate that can maintain its shape even when subjected to impacts such as explosions during a fire, can be easily installed in areas where there is a risk of fire, and is highly effective in extinguishing a fire in its early stages. Such fire-extinguishing laminates can be suitably used as industrial materials, such as building materials, automotive components, aircraft components, and electronics components.

FIG. 1 is a schematic cross-sectional view of a fire extinguishing laminate according to one embodiment.

Embodiments of the present disclosure are described in detail below. However, the present disclosure is not limited to the following embodiments.

<Fire-extinguishing laminate>
The fire extinguishing laminate includes a fiber layer and a resin layer. At least one of the fiber layer and the resin layer contains a fire extinguishing agent component that generates an aerosol upon combustion. Figure 1 is a schematic cross-sectional view of a fire extinguishing laminate according to one embodiment. The fire extinguishing laminate 10 includes a fiber layer 1 and a resin layer 2, in this order.

The thickness of the fire-extinguishing laminate is not necessarily limited, as it varies depending on the layer structure. However, from the viewpoint of being able to maintain fire-extinguishing performance and impact resistance while being thin enough to accommodate a limited installation space, it can be, for example, 0.1 to 20 mm.

The area of the main surface of the fire extinguishing laminate (the surface when the fire extinguishing laminate is viewed from above in the vertical direction) can be, for example, 1 to 1500 ^cm2 from the viewpoints of fire extinguishing performance, impact resistance, and ease of handling.

(fiber layer)
The fiber layer contains organic or inorganic fibers with high strength and heat resistance, specifically, at least one of organic and inorganic fibers. Examples of organic fibers include carbon fibers. Examples of inorganic fibers include glass fibers, metal fibers (e.g., stainless steel fibers, aluminum fibers), and ceramic fibers. These fibers have high strength and heat resistance. The fiber layer may be a fiber sheet in which unidirectionally aligned fibers are fixed with resin, or may be a woven or knitted fiber fabric. A layer formed of fibers (particularly a woven or knitted fabric) can easily support a sufficient amount of fire extinguishing agent components, is lightweight, and is resistant to deterioration due to heat or impact during ignition, making it easy to maintain strength. This further ensures safety. The fiber layer may include multiple layers containing different fibers.

The fiber layer is a substrate with high strength and heat resistance that can withstand heat and impact caused by a fire. Therefore, the fiber layer can be called a high-strength, heat-resistant substrate. A high-strength, heat-resistant substrate has at least the tensile strength and heat-resistant temperature shown below.

The tensile strength of the fiber layer measured in accordance with JIS-R-3420 can be 5×10 ³ N/25 mm or more, and may be 50×10 ³ N/25 mm or more. There is no particular upper limit to the tensile strength, but it can be 1×10 ⁶ N/25 mm or less. When the fiber layer has strength in the machine direction MD and the perpendicular direction TD, the tensile strength can be the average of both.

The modulus of elasticity of the fiber layer, measured in accordance with JIS-R-3414, can be 3 GPa or more, 10 GPa or more, or 50 GPa or more. There is no particular upper limit to the modulus of elasticity, but it can be 300 GPa or less. If the fiber layer has a machine direction (MD) and a perpendicular direction (TD), the modulus of elasticity can be the average of both.

The heat resistance temperature of the fiber layer, measured in accordance with ISO 15025, can be 300°C or higher, or 700°C or higher, or even 1300°C or higher. There is no particular upper limit to the heat resistance temperature, but it can be 1400°C or lower.

The thickness of the fiber layer can be 0.02 to 2.0 mm, or may be 0.4 to 1.0 mm, taking into consideration tensile strength, flexibility, installation space, cost, etc.

If the fiber layer contains a fire extinguishing agent component that generates an aerosol upon combustion, the amount of the fire extinguishing agent component can be 10 to 80% by mass, and may be 20 to 70% by mass, relative to the total amount of the fiber layer, from the standpoint of fire extinguishing ability and extinguishing agent retention.

(Resin layer)
The resin layer is a layer that imparts various functions to the fire extinguishing laminate, and can be called a functional layer. Examples of functional layers include an abrasion-resistant layer (hard coat layer), an antifouling layer, a water-repellent layer, a decorative layer, an ultraviolet absorbing layer, and a thermal transfer layer. The function imparted to the fire extinguishing laminate can be adjusted by the resin used. The resin layer may include a plurality of these structures.

Resins that make up the resin layer include urethane resin, epoxy resin, silicone resin, vinyl chloride resin, polyolefin resin (polyethylene or polypropylene), and polyester resin. These resins perform their intended functions while stably fixed within the functional layer under normal conditions, and are also likely to actively supply thermal energy to the extinguishing agent components in the event of an emergency such as a fire. When the resin layer contains extinguishing agent components that generate aerosols upon combustion, these resins (especially epoxy resins) are highly compatible with the extinguishing agent components and can also function as binders for the extinguishing agent components.

The thickness of the resin layer can be 0.050 to 1 mm, or 0.1 to 0.3 mm, taking into consideration factors such as fire extinguishing function, flexibility, installation space, and cost.

If the resin layer contains a fire extinguishing agent component that generates an aerosol upon combustion, the amount of the fire extinguishing agent component can be 60 to 97% by mass, or may be 70 to 93% by mass, relative to the total amount of the resin layer, from the standpoints of fire extinguishing ability and coatability.

The resin layer may contain other components such as dispersants, colorants, antioxidants, flame retardants, inorganic fillers, and adhesives. The content of these other components in the resin layer may be 20 parts by mass or less per 100 parts by mass of the total amount of the resin layer.

(Fire extinguishing agent component)
The fire extinguishing agent component generates an aerosol upon combustion. The fire extinguishing agent component includes, for example, at least an inorganic oxidizing agent and a radical generator. The radical generator has the effect of stabilizing combustion radicals and suppressing the chain reaction of combustion (negative catalytic action).

The inorganic oxidizer (hereinafter sometimes referred to as "component (A)") is a component that burns to generate thermal energy. Examples of inorganic oxidizers include potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate, magnesium chlorate, and potassium perchlorate. One of these may be used alone, or two or more may be used in combination.

The radical generator (hereinafter sometimes referred to as "component (B)") is a component that generates aerosols (radicals) using the thermal energy generated by the combustion of the inorganic oxidizer. It is preferable to use a radical generator with a decomposition onset temperature in the range of 90 to 260°C. Examples of radical generators include potassium salts and sodium salts. Potassium salts include potassium acetate, potassium propionate, monopotassium citrate, dipotassium citrate, tripotassium citrate, monopotassium trihydrogen ethylenediaminetetraacetate, dipotassium dihydrogen ethylenediaminetetraacetate, tripotassium monohydrogen ethylenediaminetetraacetate, tetrapotassium ethylenediaminetetraacetate, potassium hydrogen phthalate, dipotassium phthalate, potassium hydrogen oxalate, dipotassium oxalate, and potassium bicarbonate. Examples of sodium salts include sodium acetate, sodium citrate, and sodium bicarbonate. These may be used alone or in combination.

The content of component (A) is, for example, 10 to 60 parts by mass, preferably 20 to 50 parts by mass, and more preferably 35 to 45 parts by mass, per 100 parts by mass of the combined total of components (A) and (B). The content of component (B) is, for example, 40 to 90 parts by mass, preferably 50 to 80 parts by mass, and more preferably 55 to 65 parts by mass, per 100 parts by mass of the combined total of components (A) and (B).

Commercially available fire extinguishing agents may be used. Examples of commercially available fire extinguishing agents include K-1 (trade name, manufactured by Yamato Protec Co., Ltd.) and STAT-X (trade name, manufactured by Nippon Koki Co., Ltd.).

The fire extinguishing agent components can be used together with a binder resin. Thermoplastic and thermosetting resins can be used as binder resins. Thermoplastic resins include polyolefin resins such as polypropylene resins, polyethylene resins, poly(1-)butene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene resins, methyl methacrylate-butadiene-styrene resins, ethylene-vinyl acetate resins, ethylene-propylene resins, polycarbonate resins, polyphenylene ether resins, acrylic resins, polyamide resins, and polyvinyl chloride resins. Thermosetting resins include rubbers such as natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), 1,2-polybutadiene rubber (1,2-BR), styrene-butadiene rubber (SBR), 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), multi-vulcanized rubber (T), silicone rubber (Q), fluororubber (FKM, FZ), and urethane rubber (U), as well as polyurethane resins, polyisocyanate resins, polyisocyanurate resins, phenolic resins, and epoxy resins. The binder resin may contain a curing agent component.

Epoxy resins are suitable as binder resins because they are highly compatible with fire extinguishing agent components, soluble in alcohol solvents (described below), and highly stable. Because epoxy resins are highly compatible with potassium salts and sodium salts (radical generators), it is easy to obtain a fire extinguishing agent-containing layer with a uniform thickness. In addition, epoxy resins do not hydrolyze or become embrittled due to moist heat, so fire extinguishing agent-containing layers that use epoxy resins as binder resins have excellent stability. Furthermore, when the fire extinguishing agent-containing layer burns, thermal decomposition begins at approximately 260-350°C, allowing aerosol to be generated without compromising fire extinguishing performance.

From the perspective of immobilizing the fire extinguishing agent components and achieving excellent fire extinguishing performance, the amount of binder resin can be 5 to 40 parts by mass, or may be 10 to 30 parts by mass, per 100 parts by mass of the total amount of the fire extinguishing agent components.

(Adhesive layer)
The fire-extinguishing laminate may further include an adhesive layer between the fiber layer and the resin layer. The adhesive layer may be formed using an adhesive such as an epoxy resin, an acrylic resin, or a urethane resin. The thickness of the adhesive layer may be, for example, 1 to 10 μm, and may be 2 to 5 μm.

<Method of manufacturing the fire-extinguishing laminate>
The fire extinguishing laminate can be produced, for example, by the following production methods (1) to (3).
(1) A manufacturing method comprising the steps of: impregnating a fiber layer containing organic or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing component that generates an aerosol upon combustion; drying the impregnated first liquid composition; applying a second liquid composition containing the liquid component and a resin onto the fiber layer; and drying the applied second liquid composition.
(2) A manufacturing method comprising the steps of: applying a third liquid composition containing a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin onto a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance; and drying the applied third liquid composition.
(3) A method for producing a fire-extinguishing laminate, comprising the steps of: impregnating a fiber layer containing organic or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire-extinguishing component that generates an aerosol upon combustion; drying the impregnated first liquid composition; applying a third liquid composition containing the liquid component, the fire-extinguishing component that generates an aerosol upon combustion, and a resin onto the fiber layer; and drying the applied third liquid composition.

By using the above method (1), a fire extinguishing laminate can be obtained that includes a fiber layer containing a fire extinguishing agent component and a resin layer. By using the method (2), a fire extinguishing laminate can be obtained that includes a fiber layer and a resin layer containing a fire extinguishing agent component. By using the method (3), a fire extinguishing laminate can be obtained that includes a fiber layer containing a fire extinguishing agent component and a resin layer containing a fire extinguishing agent component. These methods make it possible to mass-produce fire extinguishing laminates at low cost.

Liquid components used in preparing each liquid composition include alcohol solvents (e.g., ethanol, IPA). Alcohol solvents have excellent dispersibility for fire extinguishing agent components and low volatility, making them suitable as solvents for preparing liquid compositions. The ratio of the amount of liquid component to the amount of fire extinguishing agent components and resin (binder resin) can be adjusted appropriately to obtain the desired viscosity of the liquid composition.

The liquid composition can be used for impregnation or coating as described above. Coating can be carried out by any suitable method. Coating can be carried out by a wet film-forming method using, for example, a gravure coater, dip coater, reverse coater, wire bar coater, or die coater.

The liquid composition can be dried by heating it to, for example, 50 to 100°C, in order to thoroughly remove the liquid components while suppressing the reaction of the fire extinguishing agent components.

Other manufacturing methods include preparing a fiber layer containing a fire extinguishing agent component and a resin layer, a fiber layer and a resin layer containing a fire extinguishing agent component, or a fiber layer containing a fire extinguishing agent component and a resin layer containing a fire extinguishing agent component, and laminating the two together via an adhesive layer.

The present disclosure will be further described in detail with reference to the following examples, but the present disclosure is not limited to these examples.

The materials shown in Table 1 were prepared for the fiber layer.

In Table 1, the tensile strength of each layer was measured in accordance with JIS-R-3420, the modulus of elasticity was measured in accordance with JIS-R-3414, and the heat resistance temperature was measured in accordance with ISO 15025.

<Preparation of Fire-Extinguishing Laminate>
The fire-extinguishing laminates shown in Table 2 were prepared. Details of each example are given below.

Example 1
A liquid composition was prepared by mixing an aerosol fire extinguisher K-1 ethanol slurry manufactured by Yamato Protec Co., Ltd. with a binder resin (epoxy resin, K468HP92 India ink manufactured by Toyo Ink Co., Ltd.) at a solid mass ratio of binder resin:fire extinguisher = 10:90. This was applied to the fiber layer shown in Table 1 to form a coating film. This was dried at 90°C for 4 minutes to form a resin layer (decorative layer) with a thickness of 200 μm on the fiber layer. This resulted in a fire extinguishing laminate.

(Examples 2 to 4)
A fire-extinguishing laminate was obtained in the same manner as in Example 1, except that the fiber layer was as shown in Table 1.

Example 5
A liquid composition was prepared by mixing an ethanol slurry of aerosol fire extinguisher K-1 manufactured by Yamato Protec Co., Ltd. with a binder resin (epoxy resin, K468HP92 India ink manufactured by Toyo Ink Co., Ltd.) at a solid mass ratio of binder resin:fire extinguisher = 30:70. A fiber layer shown in Table 1 was impregnated with this liquid composition. This was dried at 90°C for 4 minutes to obtain a fiber layer carrying the fire extinguisher component. The amount of the fire extinguisher component was 50 mass% of the total amount of the fiber layer.

Next, a binder resin (epoxy resin, K468HP92 ink, manufactured by Toyo Ink Co., Ltd.) was added to ethanol to prepare a liquid composition. This was then applied to the above-mentioned fiber layer carrying the fire extinguishing agent components to form a coating. This was then dried at 90°C for 4 minutes, forming a 200 μm-thick functional layer (decorative layer) on the fiber layer. This resulted in a fire-extinguishing laminate.

(Examples 6 to 8)
A fire-extinguishing laminate was obtained in the same manner as in Example 5, except that the amounts of the fire-extinguishing agent component relative to the total amount of the fiber layer, binder resin, and fiber layer were as shown in Tables 1 and 2.

Example 9
A fiber layer carrying a fire extinguishing agent component was obtained in the same manner as in Example 5. A resin layer (decorative layer) having a thickness of 200 μm was formed on this fiber layer in the same manner as in Example 1. This resulted in a fire extinguishing laminate.

(Examples 10 to 12)
A fire-extinguishing laminate was obtained in the same manner as in Example 9, except that the amounts of the fire-extinguishing agent component relative to the total amount of the fiber layer, binder resin, and fiber layer were as shown in Tables 1 and 2.

(Comparative Example 1)
A liquid composition was prepared by adding a binder resin (epoxy resin, K468HP92 India ink, manufactured by Toyo Ink Co., Ltd.) to ethanol. This was applied to the substrate shown in Table 1 to form a coating film. This was dried at 90°C for 4 minutes to form a functional layer (decorative layer) with a thickness of 200 μm on the substrate. This resulted in a laminate.

<Combustion Drop Fire Extinguishing Test>
The fire-extinguishing laminate obtained in each example was cut into a 70 mm x 120 mm square to prepare a test sample.
The sample was placed between two JIS B 2238-1996 SOP type flanges with nominal diameters of A32 and B11/4, nominal pressure 5K, and fixed to the flanges with bolts and nuts so that the center of the sample coincided with the center of the flange.
A stainless steel support tube having an outer diameter of 32 mm, an inner diameter of 28 mm, and a length of 1 m was placed perpendicular to the upper surface of the sample.
One gram of candle or solid fuel was ignited, and the tip of the flame was applied to the underside of the sample at the flange opening. Within 3 to 5 seconds, an iron ball with a diameter of 20 mm and a weight of 33 g was dropped onto the top of the sample through the support tube. The energy of the falling ball was estimated to be 0.32 N m.
In this way, the fire extinguishing properties and impact resistance of the samples were evaluated according to the following criteria. The results are shown in Table 3.
Fire extinguishing property: If the fire was extinguished within 5 seconds after contact with the flame, it was rated A; if the fire was extinguished in more than 5 seconds after contact with the flame, it was rated B; and if the fire could not be extinguished, it was rated C.
Impact resistance: When the shape was maintained, it was rated A, and when the shape was not maintained, it was rated B.

1...fiber layer, 2...resin layer, 10...fire extinguishing laminate.

Claims (11)

A fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance, and a resin layer,
the tensile strength of the fiber layer measured in accordance with JIS-R-3420 is 5×10 ³ N/25 mm or more, and the heat resistance temperature of the fiber layer measured in accordance with ISO 15025 is 300° C. or more;
At least one of the fiber layer and the resin layer contains a fire extinguishing agent component that generates an aerosol when burned. A fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance, and a resin layer,
the elastic modulus of the fiber layer measured in accordance with JIS-R-3414 is 3 GPa or more, and the heat resistance temperature of the fiber layer measured in accordance with ISO 15025 is 300°C or more;
At least one of the fiber layer and the resin layer contains a fire extinguishing agent component that generates an aerosol when burned. 3. The fire extinguishing laminate according to claim 1 , wherein the fiber layer comprises at least one fiber selected from the group consisting of carbon fiber, glass fiber, metal fiber, and ceramic fiber. The fire extinguishing laminate according to any one of claims 1 to 3 , wherein the thickness of the fiber layer is 0.02 to 2.0 mm. The fire extinguishing laminate according to any one of claims 1 to 4 , wherein the resin layer comprises at least one resin selected from the group consisting of a urethane resin, an epoxy resin, a silicone resin, a vinyl chloride resin, a polyolefin resin, and a polyester resin. a step of impregnating a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing agent component that generates an aerosol upon combustion;
drying the impregnated first liquid composition;
applying a second liquid composition containing a liquid component and a resin onto the fiber layer;
drying the applied second liquid composition;
Equipped with
The method for producing a fire extinguishing laminate, wherein the tensile strength of the fiber layer measured in accordance with JIS-R-3420 is 5 x 10 ³ N/25 mm or more, and the heat resistance temperature of the fiber layer measured in accordance with ISO15025 is 300°C or more. a step of impregnating a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing agent component that generates an aerosol upon combustion;
drying the impregnated first liquid composition;
applying a second liquid composition containing a liquid component and a resin onto the fiber layer;
drying the applied second liquid composition;
Equipped with
A method for producing a fire extinguishing laminate, wherein the fiber layer has an elastic modulus of 3 GPa or more as measured in accordance with JIS-R-3414 and a heat resistance temperature of 300°C or more as measured in accordance with ISO15025. a step of applying a third liquid composition containing a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin onto a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance;
drying the applied third liquid composition;
Equipped with
The tensile strength of the fiber layer measured in accordance with JIS-R-3420 is 5×10 ³ N/25 mm or more, and the heat resistance temperature of the fiber layer measured in accordance with ISO 15025 is 300°C or more. a step of applying a third liquid composition containing a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin onto a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance;
drying the applied third liquid composition;
Equipped with
A method for producing a fire extinguishing laminate, wherein the fiber layer has an elastic modulus of 3 GPa or more as measured in accordance with JIS-R-3414 and a heat resistance temperature of 300°C or more as measured in accordance with ISO15025. a step of impregnating a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing agent component that generates an aerosol upon combustion;
drying the impregnated first liquid composition;
applying a third liquid composition onto the fiber layer, the third liquid composition including a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin;
drying the applied third liquid composition;
Equipped with
The tensile strength of the fiber layer measured in accordance with JIS-R-3420 is 5×10 ³ N/25 mm or more, and the heat resistance temperature of the fiber layer measured in accordance with ISO 15025 is 300°C or more. a step of impregnating a fiber layer containing organic fibers or inorganic fibers having high strength and heat resistance with a first liquid composition containing a liquid component and a fire extinguishing agent component that generates an aerosol upon combustion;
drying the impregnated first liquid composition;
applying a third liquid composition onto the fiber layer, the third liquid composition including a liquid component, a fire extinguishing agent component that generates an aerosol upon combustion, and a resin;
drying the applied third liquid composition;
Equipped with
A method for producing a fire extinguishing laminate, wherein the fiber layer has an elastic modulus of 3 GPa or more as measured in accordance with JIS-R-3414 and a heat resistance temperature of 300°C or more as measured in accordance with ISO15025.