JP2022171358A - Fire-extinguishing member and method for producing fire-extinguishing member - Google Patents

Abstract

To provide a fire-extinguishing member that allows an aerosol fire extinguisher having a high fire-extinguishing effect to be formed even on an adherend having a complicated shape such as unevenness, and facilitates extinguishing at the beginning of a fire, thereby preventing fire spread, and a method that efficiently produces the same.SOLUTION: Provided is a method for producing a fire-extinguishing member that includes: an adherend having an uneven treatment surface; a fire extinguisher-containing layer provided on the treatment surface; and a protective layer provided on the surface of the fire extinguisher-containing layer. The fire extinguisher-containing layer contains a binder resin, and a fire extinguisher component that generates aerosol by combustion. The method includes the steps of preparing an adherend having an uneven treatment surface; forming the fire extinguisher-containing layer on the treatment surface; and forming the protective layer on the fire extinguisher-containing layer. The step for forming the fire extinguisher-containing layer and/or the step for forming the protective layer is conducted by the wet coating technique.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fire-extinguishing member and a method of manufacturing a fire-extinguishing member. The present invention relates to a member used in industrial members such as building materials, automobile members, aircraft members, and electronic members.

In recent years, with the advancement of technology, our lives have become more and more comfortable. On the other hand, a large amount of energy is required to create that comfort, and a high degree of safety is required in each scene, such as filling and storing energy densely, moving, and using it.

Taking an automobile as an example, there is a danger of ignition and fire in the scene of extracting fossil fuels such as gasoline, the scene of refining gasoline from fossil fuels, and the scene of transportation. Taking electronics as an example, when moving electrical energy through wires, when regulating electrical energy at substations and transformers, when electrical energy is used in electrical equipment in homes and factories, or when it is used temporarily Similarly, when a storage battery is provided for storage, the danger of ignition and fire is also hidden.

In order to solve such a problem, Japanese Patent Laid-Open No. 2002-200000 proposes a countermeasure using a heat-insulating material, a non-combustible material, and a flame-retardant material as constituent members.

Japanese Patent No. 5317785

However, when insulating materials, non-combustible materials, and flame-retardant materials are used as constituent members, non-combustible materials existing in the vicinity will spread fire. spreads. Examples of objects include switchboards, distribution boards, control boards, storage batteries (lithium ion, etc.), wallpaper for building materials, building materials such as ceiling materials, and various members of collection boxes for lithium ion batteries.

The present invention has been made in view of such circumstances, and an aerosol fire-extinguishing agent that exerts excellent fire-extinguishing effects even on adherends having complex shapes such as unevenness is formed on the adherend. To provide a fire-extinguishing member capable of suppressing the spread of a fire by facilitating initial fire-extinguishing when a fire breaks out, and a method for efficiently manufacturing the same.

The present invention comprises an adherend having an uneven surface to be treated, a fire extinguishing agent-containing layer provided on the treated surface, and a protective layer provided on the surface of the extinguishing agent-containing layer. A method for producing a fire-extinguishing member, wherein the agent-containing layer contains a binder resin and a fire extinguishing agent component that generates an aerosol by combustion, the step of preparing an adherend having an uneven surface to be treated; Forming a fire-extinguishing agent-containing layer on the surface to be treated, and forming a protective layer on the fire-extinguishing agent-containing layer, wherein the step of forming the fire-extinguishing agent-containing layer or the step of forming the protective layer At least one provides a method performed by a wet coating method.

At least one of the step of forming the extinguishing agent-containing layer and the step of forming the protective layer may be a method performed by a spray coating method or a dip coating method.

Further, the present invention comprises an adherend having an uneven surface to be treated, a fire extinguishing agent-containing layer provided on the treated surface, and a protective layer provided on the surface of the extinguishing agent-containing layer, A fire-extinguishing member is provided in which the fire-extinguishing agent-containing layer contains a binder resin and a fire-extinguishing agent component that generates an aerosol upon combustion.

The adherend may be an injection-molded article or a press-molded article.

The material of the protective layer is at least one selected from the group consisting of polyolefin, polyester, fluororesin, polyvinyl chloride, polyvinyl alcohol, acrylic resin, epoxy resin, polyamide, polyimide, metal, oxide, nitride and oxynitride. can be

The water vapor permeability of the protective layer may be 2×10 ² g/m ² /day or less.

The pencil hardness of the protective layer may be B or higher.

According to the present invention, an aerosol fire-extinguishing agent that exerts an excellent fire-extinguishing effect is formed on an adherend having a complex shape such as unevenness, thereby facilitating initial extinguishing when a fire occurs. It is possible to provide a fire-extinguishing member capable of suppressing the spread of a fire at , and a method for efficiently manufacturing the same.

(a) and (b) are schematic cross-sectional views of a fire extinguishing member according to one embodiment. It is a schematic cross-sectional view showing an uneven shape according to one embodiment, (a) is a diagram showing the maximum height of the uneven shape, and (b) is a diagram showing the ratio between the maximum height of the uneven shape and the minimum width of the bottom surface. is.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as the case may be. However, the present invention is not limited to the following embodiments.

<Fire extinguishing member>
FIG. 1 is a schematic cross-sectional view of a fire extinguishing member according to one embodiment. The fire-extinguishing member 10 comprises an adherend 1 having an uneven treated surface, a fire-extinguishing agent-containing layer 2 provided on the treated surface, and a protective layer 3 provided on the surface of the fire-extinguishing agent-containing layer. , provided. As shown in FIG. 1(a), the protective layer 3 may be provided on a part of the surface of the extinguishing agent-containing layer 2, and as shown in (b), the protective layer 3 It may be provided on the entire surface of the agent-containing layer 2 .

(adherend)
The material of the adherend 1 is not particularly limited, and for example, adherends used for construction materials, automobile members, aircraft members, electronic members, etc. can be used. Such an adherend 1 may be a resin base material, metal, non-combustible paper, glass cloth, or the like.

Examples of resin substrates include polyolefins (LLDPE, PP, COP, CPP, etc.), polyesters (PET, etc.), fluororesins (PTFE, ETFE, EFEP, PFA, FEP, PCTFE, etc.), PVC, PVA, acrylic resins, epoxy resins, etc. Resins, polyamides, polyimides, polycarbonates (PC) and the like can be mentioned. Among these, LLDPE, PP, COP, CPP, PET, PTFE, ETFE, EFEP, PFA, FEP, PCTFE, At least one of PVC and PC may be included. In addition, by using a highly transparent material, it becomes easier to perform an external inspection of the fire-extinguishing member 10 and confirm replacement timing.

Examples of metals include aluminum, iron, copper, stainless steel alloys thereof, duralumin, galvanized steel sheets, and the like.

In addition to the above, the adherend 1 contains, for example, organic phosphorus compounds (FR), epoxy compounds, aramid compounds, amide compounds, silicon compounds, carbon, aramid compounds, amide compounds, silicon compounds, carbon fibers, and the like. You can stay.

The adherend 1 has an uneven surface to be treated. The surface to be processed having unevenness may be, for example, a surface to be processed in which the height difference between the projections and the recesses is equal to or greater than a certain value, for example, a surface to be processed in which the maximum height of the unevenness is 0.1 mm or more. Alternatively, on the surface to be treated, the angle formed by the bottom surface (first surface) and the slope (second surface) (see A in FIG. 2(a)) may be 90° or more and less than 90°. good too. On the surface to be treated, the corner R formed by the bottom surface and the slope may be 3 mm or less, and the ratio of the maximum height of the uneven shape to the minimum width of the bottom surface (see B/C in FIG. 2(b)) is 3 or less or 1 or less. can be The number of uneven shapes on the surface to be processed may be one or more, or three or more.

Even with the adherend 1 having such a treated surface, the extinguishing agent-containing layer described later can be neatly provided on the adherend 1 by a wet coating method, and an aerosol fire extinguishing agent that exhibits an excellent fire extinguishing effect. can be formed on the adherend 1 .

The thickness of the adherend 1 can be appropriately selected according to the amount of heat, impact, allowable space, etc. at the time of fire. For example, if the adherend 1 is thick, it is easy to suppress water vapor permeation, obtain strength and rigidity, and facilitate handling. On the other hand, if the adherend 1 is thin, the fire-extinguishing member can be provided in a narrow space. The thickness of the adherend 1 can be, for example, 0.05 to 20 mm, and may be 0.1 to 5 mm. The adherend 1 may be a laminate of a plurality of adherends.

The adherend 1 may be an injection-molded article or a press-molded article. The adherend 1 formed by an injection molding method or a press molding method is preferable because it can be mass-produced with a complicated concave-convex shape. The adherend may be the housing itself, or may be provided on the inner surface of the housing.

(Layer containing extinguishing agent)
The extinguishing agent-containing layer 2 contains a binder resin and an extinguishing agent component that generates an aerosol by combustion. The fire extinguishing agent component includes, for example, at least an inorganic oxidant and a radical generator. The radical generator has an action (negative catalytic action) of stabilizing combustion radicals and suppressing a chain reaction of combustion.

The thickness of the fire-extinguishing agent-containing layer 2 may be appropriately set according to the fire-extinguishing target or installation location of the fire-extinguishing member 10 and the amount of the fire-extinguishing agent component to be blended. The thickness of the extinguishing agent-containing layer 2 may be, for example, 1 mm or less, and may be 30 to 1000 μm, and may be 120 to 500 μm.

The content of the extinguishing agent component in the extinguishing agent-containing layer 2 (based on the mass of the extinguishing agent-containing layer 2) is, for example, 70 to 97% by mass, preferably 80 to 95% by mass, more preferably 85 to 92. % by mass. When the content of the extinguishing agent component is 70% by mass or more, excellent fire extinguishing performance can be achieved, and when it is 97% by mass or less, stable adhesion to the adherend 1 is obtained, and A stable coating film can be achieved without the extinguishing agent sliding down. The amount of the extinguishing agent component per unit area may be set according to the target to be extinguished.

[Extinguishing agent component]
The extinguishing agent component generates an aerosol upon combustion as described above. The fire extinguishing agent component includes, for example, at least an inorganic oxidant and a radical generator. These components are described below.

The inorganic oxidizing agent (hereinafter sometimes referred to as "(A) component") is a component that burns together with the binder resin to generate thermal energy. Inorganic oxidants include potassium chlorate, sodium chlorate, strontium chlorate, ammonium chlorate, magnesium chlorate and potassium perchlorate. These may be used individually by 1 type, and may use 2 or more types together.

The radical generator (hereinafter sometimes referred to as "(B) component") is a component for generating an aerosol (radical) by thermal energy generated by combustion of the binder resin and the inorganic oxide. As the radical generator, it is preferable to use one having a decomposition initiation temperature in the range of 90 to 260°. Radical generators include potassium and sodium salts. As potassium salts, 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. Sodium salts include sodium acetate, sodium citrate and sodium bicarbonate. These may be used individually by 1 type, and may use 2 or more types together.

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

A commercially available product may be used as the fire extinguishing agent component blended in the fire extinguishing agent containing layer 2 . Examples of commercially available fire extinguishing agent components include K-1 (trade name, manufactured by Yamato Protech Co., Ltd.) and STAT-X (trade name, manufactured by Nippon Koki Co., Ltd.).

[Binder resin]
Thermoplastic resins and thermosetting resins can be used as binder resins. Polyolefin-based resins such as polypropylene-based resins, polyethylene-based resins, poly(1-)butene-based resins, polypentene-based resins, polystyrene-based resins, acrylonitrile-butadiene-styrene-based resins, and methyl methacrylate-butadiene-styrene-based resins as thermoplastic resins resins, ethylene-vinyl acetate resins, ethylene-propylene resins, polycarbonate resins, polyphenylene ether resins, acrylic resins, polyamide resins, polyvinyl chloride resins, and the like. Thermosetting resins include 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), polyvulcanized rubber (T), silicone rubber (Q), fluororubber (FKM, FZ), urethane rubber (U), polyurethane resin, polyisocyanate resin, polyisocyanurate resin, phenol resin, epoxy resin, and the like. The binder resin may contain a curing agent component.

Epoxy resins are suitable for binder resins because they are highly compatible with fire extinguishing agent components, soluble in alcohol solvents described below, and have high stability. Since epoxy resins are highly compatible with potassium salts and sodium salts (radical generators), it is easy to obtain a fire-extinguishing agent-containing layer having a uniform thickness. In addition, since the epoxy resin does not undergo hydrolysis or embrittlement due to wet heat, the fire-extinguishing agent-containing layer containing the epoxy resin as a binder resin has excellent stability. Further, when the extinguishing agent-containing layer is burned, thermal decomposition begins at about 260 to 350° C., and aerosol can be generated without impairing the extinguishing performance.

As the binder resin, it is preferable to use one having water vapor barrier properties. The binder resin preferably has a water vapor permeability of 5 g·mm/m ² /day or less, more preferably 1 g·mm/m ² /day or less (JIS K 7129 compliant 40 ° C./90% RH conditions) can be achieved. As a commercially available product of such a binder resin, Maxieve (trade name, manufactured by Mitsubishi Gas Chemical Company, Inc.) can be mentioned.

The content of the binder resin based on the total amount of the extinguishing agent-containing layer 2 is, for example, 3 to 30% by mass, preferably 5 to 20% by mass, more preferably 8 to 15% by mass. When the binder resin content is 3% by mass or more, excellent moldability can be achieved, and when it is 30% by mass or less, excellent fire extinguishing performance can be achieved.

[Other ingredients]
The extinguishing agent-containing layer 2 may contain other components in addition to those described above. Other components include dispersants such as water, solvents, colorants, antioxidants, flame retardants, inorganic fillers and adhesives. These components may be appropriately selected according to the composition of the extinguishing agent-containing layer 2 and the type of binder resin. The content of other components in the fire-extinguishing agent-containing layer 2 (based on mass of the fire-extinguishing agent-containing layer) is, for example, 10% by mass or less.

(protective layer)
The material of the protective layer 3 is not particularly limited, and for example, protective layers used for building materials, automobile members, aircraft members, electronic members, etc. can be used. By providing the protective layer 3 on the surface of the extinguishing agent-containing layer, the extinguishing agent-containing layer is deliquesced during transportation of the extinguishing member, processing of the extinguishing member, and long-term storage of products using the extinguishing agent. Corrosion of surrounding metals by alkaline water can be suppressed. Also, the fire extinguishing speed can be maintained.

Examples of materials for the protective layer 3 include polyolefin, polyester, fluorine resin, polyvinyl chloride, polyvinyl alcohol, acrylic resin, epoxy resin, polyamide, polyimide, metal, oxide, nitride, and oxynitride.

The protective layer 3 may have a water vapor permeability of 2×10 ² g/m ² /day or less. When the water vapor permeability is 2×10 ² g/m ² /day or less, the fire-extinguishing agent-containing layer is not exposed during transportation of the fire-extinguishing member, processing of the fire-extinguishing member, and long-term storage of products using the fire-extinguishing member. Deliquescence and corrosion of surrounding metals by alkaline water can be further suppressed. Also, the fire extinguishing speed can be maintained. From this point of view, the water vapor permeability of the protective layer 3 is preferably 2×10 ¹ g/m ² /day or less. The water vapor transmission rate of the protective layer 3 is a value measured under conditions of 40° C./90% RH in accordance with JIS K 7129.

The protective layer 3 may have a pencil hardness of B or higher. When the pencil hardness is B or higher, the extinguishing agent-containing layer is exposed due to cracking or scratching of the protective layer during transportation of the extinguishing member, processing of the extinguishing member, or long-term storage of products using the extinguishing member, It is possible to prevent the extinguishing agent-containing layer from deliquescing. From this point of view, the pencil hardness of the protective layer 3 is preferably F or higher. In addition, the pencil hardness of the protective layer 3 refers to a value obtained by measuring the scratch hardness (pencil method) according to JIS K 5600.

The thickness of the protective layer 3 is not particularly limited, and may be appropriately set according to the fire extinguishing object or installation location of the fire extinguishing member 10 and the amount of the extinguishing agent component to be blended. The thickness of the protective layer 3 may be, for example, 1-1000 μm, or 20-300 μm.

<Method for manufacturing extinguishing member>
The method for manufacturing the fire-extinguishing member 10 comprises the steps of preparing an adherend 1 having an uneven surface to be treated, forming a fire-extinguishing agent-containing layer 2 on the surface to be treated, and forming the fire-extinguishing agent-containing layer 2 on the and a step of forming a protective layer 3, wherein at least one of the step of forming the fire-extinguishing agent-containing layer 2 and the step of forming the protective layer 3 is performed by a wet coating method.

The wet coating method is, for example, a method of preparing a coating liquid containing a binder resin and a fire extinguishing agent component that generates an aerosol by combustion, and forming a film on the treated surface of the adherend, or forming a protective layer. A method of preparing a coating liquid containing a material for extinguishing agent and forming a film on the fire-extinguishing agent-containing layer 2 is exemplified. The coating liquid may contain, for example, an alcohol solvent or the like. Wet coating methods include a spray coating method, a dip coating method, a curtain coating method, a spin coating method, a sponge roll method, and a brush coating method. Among these, the spray coating method and the dip coating method are preferable.

The spray coating method is a method of applying a coating liquid in the form of a mist using a spray coater. It is preferable that the spray method and nozzle specifications are appropriately selected according to the surface to be treated of the adherend, the uneven shape on the extinguishing agent-containing layer, the solvent contained in the coating liquid, the tact time, and the cost of the equipment. . Nozzle specifications are compatible with, for example, one-fluid nozzles (spray patterns (flat, straight, full cone, hollow cone, fine spray, oval, square) and spray angles (0° to 170°). It can reliably cover the range), two-fluid spray (a spray nozzle that pulverizes and atomizes a liquid with a high-speed air current such as compressed air, enabling a wide range of adjustment of the nozzle that is optimal for the required application and conditions such as fine mist and fog. become) and the like. In addition, as a spray method, for example, in order to generate a pattern composed of medium to large particles on a circular front surface, a full cone spray method is preferable. It is preferable to use a two-fluid air atomizing spray system capable of forming a film. In particular, when the solvent is alcohol-based, the adherend 1 and the extinguishing agent-containing layer 2 are preferably made of a material that satisfies solvent resistance and explosion-proof specifications. It is preferable to design a desired thickness according to the object to be extinguished, and appropriately select the solid content, viscosity, and lifting speed from the viewpoint of the thickness and the stability of the extinguishing agent-containing layer or protective layer. The solids content can be, for example, 15-60%. If the solids content and viscosity are high, a large thickness can be obtained with a single spray, but the required pressure is high and the risk of clogging is increased. Also, if a large thickness is obtained at once, there is a risk that bumping will occur during drying, resulting in irregularities on the film surface. From this point of view, the solid content is preferably 30 to 50%.

The dip coating method is a method in which the adherend or the adherend and the fire-extinguishing agent-containing layer are vertically immersed in a liquid (coating liquid), and then pulled up after adjusting the force and speed due to the viscosity, surface tension, and weight of the liquid. The lifting speed is controlled from the relationship between the viscosity in the liquid and the gravitational force of the coating liquid adhering to the adherend or fire-extinguishing agent-containing layer. It is preferable to design the desired thickness according to the object to be extinguished, and appropriately select the solid content, viscosity, and lifting speed from the viewpoint of the thickness. The solids content can be, for example, 15-60% by weight. If the solid content and viscosity are high, a large thickness can be obtained, but there is a risk that thickening will easily occur, bumping will easily occur during drying, and unevenness will occur on the film surface. From this point of view, the solid content is preferably 20 to 50% by mass, preferably 30 to 50% by mass.

According to such a manufacturing method according to the present embodiment, even an adherend having a complicated shape such as unevenness, or an adherend having a complicated shape such as unevenness or a fire extinguishing agent-containing layer can be excellent It is possible to form an aerosol fire extinguishing agent that exerts a fire extinguishing effect and promote initial extinguishing when a fire breaks out.

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

[Examples 1 to 24, Comparative Examples 1 to 4]
PC-FR (40) (manufactured by Idemitsu Kosan Co., Ltd., AK3020, thickness 100 μm) was prepared as an adherend. An uneven shape was provided on this adherend. Details of the uneven shape are shown in Tables 1 to 4.

On the other hand, as a slurry for the fire extinguishing agent-containing layer, an aerosol extinguishing agent (trade name: K-1, ethanol slurry, manufactured by Yamato Protech Co., Ltd.) and a binder resin (trade names: AD393 and CAT-EP5, manufactured by Toyo Ink) are mixed. What was added to the pull alcohol was prepared and adjusted to a mass ratio of the binder resin and the aerosol fire extinguishing agent (binder resin/aerosol fire extinguishing agent=10).

The slurry of the extinguishing agent-containing layer is applied to the adherend prepared above by the method shown in Tables 1 to 4, and the total solid content is 42.5% by mass, at a drying temperature of 90 ° C. for 1 minute. It was applied so that the total thickness of the extinguishing agent-containing layer was 200 μm. Subsequently, the slurry for the protective layer was applied by the methods shown in Tables 1 to 4 and dried to produce the fire extinguishing members shown in Tables 1 to 4. The following coating liquids were used for the protective layers.
Protective layer coating liquid 1: M-100 (manufactured by Mitsubishi Gas Chemical Co., Ltd.) 8.4% by mass, C-93 (manufactured by Toyo Ink Co., Ltd.) 26.9% by mass, methanol 20.2%, ethyl acetate 44.5% by mass %
Protective layer coating solution 2: KBE-04 (manufactured by Shin-Etsu Chemical Co., Ltd., TEOS) 12.53% by mass, PVA124 (manufactured by Kuraray Co., Ltd., PVA) 0.95% by mass, KBM-9659 (manufactured by Shin-Etsu Chemical Co., Ltd.) 0. 50% by mass, 50.47% by mass of hydrochloric acid (0.1N), 22.85% by mass of water, 7.95% by mass of methanol, 4.75% by mass of IPA
Protective layer coating liquid 3: HP120 (manufactured by Yokohama Rubber Co., Ltd.) 12.5% by mass, toluene 87.5% by mass

[Evaluation of extinguishing member]
The obtained samples were evaluated as follows. The results are shown in Tables 5-8.

<Evaluation after sample preparation>
Lifting between the adherend and the extinguishing agent-containing layer was visually observed. In Tables 5 to 8, "absence" was given when no lift was observed, and "yes" was given when lift was observed.

<Evaluation of Protective Layer Pencil Hardness>
A pencil with each hardness using HA-301 manufactured by Tester Sangyo is placed at an angle of 45 ° and a load of 750 g with respect to the sample surface, and immediately after the tip of the pencil is placed on the coating film, the device was scanned at a distance of 10 mm away from the operator at a speed of 1 mm/s.

<Fire extinguishing test>
[Candle extinguishing properties]
The fire extinguishing members of Examples and Comparative Examples were each cut into a size of 20 mm long×20 mm wide to obtain samples. While holding the sample with tweezers, it was brought close to the flame of the candle up to a height of 20 mm. After burning the sample, it was observed whether or not the fire could be extinguished, and the time required for extinguishing was measured.
[Solid fuel 1g extinguishing property]
The fire extinguishing members of Examples and Comparative Examples were each cut into a size of 20 mm long×20 mm wide to obtain samples. After placing 1 g of solid fuel in a pan placed inside an aluminum container, the solid fuel was ignited to generate a flame. While holding the sample with tweezers, it was brought close to the flaming solid fuel up to a height of 20 mm. After burning the sample, it was observed whether it could be extinguished, and the time required for extinguishing was measured.

<Evaluation of Reliability>
The samples prepared above were placed under conditions of 85° C. and 85% RH, and deliquescence and fire extinguishing tests were performed after 500 hours and 1000 hours. The deliquescent test method was performed as follows.

[Deliquescence]
Asada pH test paper was brought into contact with the surface of the sample to measure the pH. If deliquesced, the fire extinguishing agent becomes an aqueous solution and exhibits an alkaline pH of 9 or higher.

The fire could not be extinguished without a fire extinguishing agent, and although the material of Yamato Protech could extinguish the fire, the fire extinguishing time was remarkably increased as shown in Comparative Example 4, as shown in Comparative Example 4.

Reference Signs List 1: adherend, 2: extinguishing agent-containing layer, 3: protective layer, 10: extinguishing member.

Claims (7)

An adherend having an uneven treated surface, a fire extinguishing agent-containing layer provided on the treated surface, and a protective layer provided on the surface of the extinguishing agent containing layer, wherein the extinguishing agent A method for producing a fire extinguishing member, wherein the containing layer contains a binder resin and a fire extinguishing agent component that generates an aerosol by combustion,
a step of preparing an adherend having the uneven surface to be treated;
forming the extinguishing agent-containing layer on the surface to be treated;
forming the protective layer on the extinguishing agent-containing layer;
At least one of the step of forming the fire-extinguishing agent-containing layer and the step of forming the protective layer is performed by a wet coating method. At least one of the step of forming the fire-extinguishing agent-containing layer and the step of forming the protective layer is performed by a spray coating method or a dip coating method. An adherend having an uneven treated surface, a fire extinguishing agent-containing layer provided on the treated surface, and a protective layer provided on the surface of the extinguishing agent containing layer, wherein the extinguishing agent A fire extinguishing member, wherein the containing layer contains a binder resin and a fire extinguishing agent component that generates an aerosol by combustion. The fire-extinguishing member according to claim 3, wherein the adherend is an injection-molded article or a press-molded article. At least the material of the protective layer is selected from the group consisting of polyolefin, polyester, fluororesin, polyvinyl chloride, polyvinyl alcohol, acrylic resin, epoxy resin, polyamide, polyimide, metal, oxide, nitride and oxynitride. The fire extinguishing member according to claim 3 or 4, which is one kind. The fire extinguishing member according to any one of claims 3 to 5, wherein the protective layer has a water vapor permeability of ² x 102 g/ ^m2 /day or less. The fire extinguishing member according to any one of claims 3 to 6, wherein the protective layer has a pencil hardness of B or higher.

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