JP6947895B1 - Fire protection equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof facility in which a poor appearance and a decrease in fire resistance are unlikely to occur even when a heat-expandable refractory material is used in a high humidity environment or an environment in contact with water. SOLUTION: A fire protection facility equipped with at least a part of heat-expandable refractory materials 40D and 40E having an elution rate of 3% or less when immersed in water at 60 ° C. for 1000 hours. [Selection diagram] Fig. 5

Description

The present invention relates to fire protection equipment such as fittings equipped with a heat-expandable refractory material.

Conventionally, fire protection equipment has been installed in areas where there is a risk of fire spreading, such as the openings of buildings. Fire protection equipment is often equipped with a heat-expandable refractory material containing a heat-expandable material such as heat-expandable graphite. Further, in order to improve the fire resistance, the heat-expandable refractory material has been attempted to contain a relatively large amount of a flame retardant, an inorganic filler and the like in addition to the heat-expandable graphite.

On the other hand, the fittings provided at the openings of the building may be provided with drainage holes at the bottom of the fittings such as the lower frame and lower stile so that rainwater, dew condensation, etc. can be discharged to the outside to secure a drainage route. Are known. Drainage routes such as drainage holes are defects in fire protection, which may be a factor in spreading the fire. Therefore, a drainage path such as a drainage hole may be designed to be blocked by a heat-expandable refractory material in the event of a fire (see, for example, Patent Document 1).

Japanese Patent No. 6701318

By the way, many of the flame retardants and inorganic fillers used in the heat-expandable refractory material have low water resistance, and the internal material elutes due to dew condensation and humidity, resulting in problems such as poor appearance and deterioration of fire resistance. It can happen.
The heat-expandable refractory material used to block the lower part of the fire protection equipment, especially the drainage route, is placed under high humidity and comes into contact with water during use, resulting in a remarkable deterioration in appearance and fire resistance. Is more likely to occur. When these problems occur, measures such as collection and replacement are taken, but in the case of buildings such as buildings and condominiums, steps such as scaffolding are required when replacing them, which requires a great deal of time and effort.

Therefore, it is an object of the present invention to provide a fireproof equipment in which a poor appearance and a decrease in fire resistance are unlikely to occur even when the heat-expandable refractory material is arranged in a high humidity environment or an environment in contact with water.

As a result of diligent studies to solve the above problems, the present inventor has used a heat-expandable refractory material having a coefficient of thermal expansion of 3% or less when immersed in water at 60 ° C. for 1000 hours. We have found that the problem can be solved and completed the present invention. That is, the present invention is as described in [1] to [9] below.
[1] A fire protection facility equipped with at least a part of a heat-expandable refractory material having an elution rate of 3% or less when immersed in water at 60 ° C. for 1000 hours.
[2] The fire protection equipment according to the above [1], wherein the heat-expandable refractory material contains a matrix component and heat-expandable graphite.
[3] The fire protection equipment according to the above [2], wherein the heat-expandable refractory material further contains an inorganic filler.
[4] The fire protection equipment according to the above [2] or [3], wherein the matrix component contains at least one selected from the group consisting of chloroprene rubber, styrene-butadiene rubber, butyl rubber, urethane rubber, and PVC. ..
[5] The fire protection equipment according to any one of the above [1] to [4], wherein the heat-expandable refractory material does not substantially contain a phosphorus component.
[6] The fire protection equipment according to any one of the above [1] to [5], wherein the heat-expandable fireproof material is mounted on the lower part of the fire prevention equipment.
[7] The fire protection equipment according to any one of the above [1] to [6], which is used in at least one of a building and an apartment.
[8] The fire protection equipment is provided with a drainage route.
The fire protection equipment according to any one of the above [1] to [7], wherein the heat-expandable refractory material is arranged so as to block the drainage path when it is thermally expanded by heating.
[9] The fire protection equipment is provided with a drainage hole.
The fire protection equipment according to any one of the above [1] to [8], wherein the heat-expandable refractory material is arranged so as to close the drain hole when it is thermally expanded by heating.

According to the present invention, it is possible to provide a fireproof facility in which a poor appearance or a decrease in fire resistance is unlikely to occur even when the heat-expandable refractory material is arranged in a high humidity environment or an environment in contact with water.

It is a front view which shows the fitting which constitutes the fire protection equipment. It is sectional drawing which shows by partially enlarging the fitting which concerns on 1st Embodiment. It is sectional drawing which shows by partially enlarging the fitting which concerns on 2nd Embodiment. It is sectional drawing which shows by partially enlarging the fitting which concerns on 3rd Embodiment. It is sectional drawing which shows by partially enlarging the fitting which concerns on 4th Embodiment. It is sectional drawing which shows by partially enlarging the fitting which concerns on 5th Embodiment.

Hereinafter, the present invention will be described with reference to embodiments.
The refractory equipment of the present invention is equipped with a heat-expandable refractory material at least in part. Hereinafter, the heat-expandable refractory material used in the present invention will be described in detail.

[Heat-expandable refractory material]
The heat-expandable refractory material used in the present invention has an elution rate of 3% or less when immersed in water at 60 ° C. for 1000 hours. When the dissolution rate exceeds 3%, the components constituting the heat-expandable refractory material are eluted when the heat-expandable refractory material mounted on the fire protection equipment is placed in a position where it comes into contact with water or under high humidity. The fire resistance may be reduced, or the elution may contaminate the fire protection equipment, resulting in poor appearance.
The elution rate is preferably 1% or less, more preferably 0.5% or less, still more preferably 0.2% or less, from the viewpoint of preventing the appearance of the fire protection equipment from being deteriorated and further improving the fire resistance. .. Further, the lower the elution rate, the better, and it may be 0% or more.
The dissolution rate can be adjusted by appropriately selecting each component to be blended in the heat-expandable refractory material. Specifically, a compound having low solubility in water may be used for the matrix component, the inorganic filler, the organic flame retardant, and other additives described later.
The specific method for measuring the dissolution rate is as described in Examples.

<Matrix component>
In the present invention, the heat-expandable refractory material includes a matrix component and heat-expandable graphite, and the heat-expandable graphite is dispersed in the matrix component. The matrix component is at least one selected from a resin component, a rubber component and an elastomer component.

The rubber components include isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR), hydrogenated styrene-butadiene copolymer rubber (HSBR), chloroprene rubber (CR), and acrylonitrile-butadiene rubber (NBR). Diene rubber, ethylene-propylene rubber (EPM), ethylene-propylene-diene rubber (EPDM), natural rubber, butyl rubber, chlorinated butyl rubber, chlorosulfonated polyethylene, acrylic rubber, epichlorohydrin rubber, polyvulverable rubber, non-sulfurized Examples include rubber components such as rubber, silicone rubber, fluorine rubber, and urethane rubber.

Examples of the elastomer component include thermoplastic elastomers, and specifically, olefin-based thermoplastic elastomers (TPOs), styrene-based thermoplastic elastomers, ester-based thermoplastic elastomers, amide-based thermoplastic elastomers, and vinyl chloride-based heat. Examples include thermoplastic elastomers and combinations thereof.
TPO is a thermoplastic elastomer having polyolefin such as polyethylene and polypropylene as a hard segment and rubber such as ethylene-propylene rubber and ethylene-propylene-diene rubber as a soft segment.
Examples of the styrene-based thermoplastic elastomer include a block copolymer having a polystyrene block as a hard segment, and specifically, a styrene-butadiene-styrene block copolymer (SBS) and a styrene-ethylene-styrene block copolymer weight. Examples thereof include coalescence (SES), styrene-ethylene / butylene-styrene block copolymer (SEBS), and styrene-ethylene / propylene-styrene block copolymer (SEPS).

The resin component in the matrix component may be a thermoplastic resin or a thermosetting resin, but a thermoplastic resin is preferable.
Examples of the thermoplastic resin include polypropylene resins, polyethylene resins, poly (1-) butene resins, polyolefin resins such as polypentene resins, polyester resins such as polyethylene terephthalate, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and the like. Examples thereof include ethylene-vinyl acetate copolymer resin (EVA), polycarbonate resin, polyphenylene ether resin, (meth) acrylic resin, polyamide resin, polyvinyl chloride resin (PVC), novolak resin, polyurethane resin, polyisobutylene and the like. ..
From the viewpoint of fire resistance, the thermoplastic resin preferably contains at least one of a halogen atom or a structural unit derived from styrene or vinyl acetate. For such simplicity, among the thermoplastic resins, polyvinyl chloride resin (PVC) and ethylene-vinyl acetate copolymer resin (EVA) are preferable, and polyvinyl chloride resin (PVC) is more preferable.

Examples of the polyvinyl chloride resin (PVC) include a homopolymer of a vinyl chloride monomer, a copolymer of a vinyl chloride monomer and a monomer having an unsaturated bond copolymerizable with the vinyl chloride monomer, and a polymer other than the vinyl chloride monomer. Alternatively, a graft copolymer obtained by graft-copolymerizing a vinyl chloride monomer to the copolymer may be mentioned, and these may be used alone or in combination of two or more.
In the present invention, the chlorinated polyvinyl chloride resin, which is a chlorinated product of the polyvinyl chloride resin, is also included in the polyvinyl chloride resin.
The degree of polymerization of the polyvinyl chloride resin is preferably 500 to 2,000, more preferably 800 to 1500. Within such a range, the fluidity of the resin component is increased, and it becomes easy to adjust the expansion ratio to a desired range.

The ethylene-vinyl acetate copolymer resin (EVA) may be a non-crosslinked ethylene-vinyl acetate copolymer resin or a high-temperature crosslinked ethylene-vinyl acetate copolymer resin. May be good. Further, as the ethylene-vinyl acetate copolymer resin, an ethylene-vinyl acetate modified resin such as a saponified product of the ethylene-vinyl acetate copolymer and a hydrolyzate of ethylene-vinyl acetate can also be used.
The ethylene-vinyl acetate copolymer resin preferably has a vinyl acetate content of 5 to 90% by mass, more preferably 8 to 50% by mass, as measured in accordance with JIS K 6730 “Ethylene-vinyl acetate resin test method”. More preferably, it is 12 to 35% by mass.
The melt flow rate (MFR) of the ethylene-vinyl acetate copolymer resin at 190 ° C. is preferably 0.5 to 15 g / 10 min, and more preferably 1 to 8 g / 10 min. The melt flow rate of the ethylene-vinyl acetate copolymer at 190 ° C. is a measured value under a load of 2.16 kg, and is measured in accordance with JIS K7210: 1999.

The thermosetting resin is not particularly limited, and examples thereof include epoxy resin, polyurethane resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, and thermosetting polyimide, and among them, fire resistance. Epoxy resin is preferable from the viewpoint of improving the property.

The epoxy resin may be an epoxy resin having an aromatic ring or an epoxy resin having no aromatic ring, but an epoxy resin having an aromatic ring is preferable from the viewpoint of enhancing nonflammability. The epoxy resin is obtained, for example, by reacting an epoxy compound having an epoxy group with a curing agent.
The epoxy compound used to obtain the above-mentioned epoxy resin having an aromatic ring is, for example, a bisphenol A type epoxy compound, a bisphenol F type epoxy compound, a biphenyl type epoxy compound, a naphthalene type epoxy compound, or a phenol novolac type epoxy. Examples thereof include compounds, bisphenol A novolak type epoxy compounds, tetraphenol ethane type epoxy compounds, tetraglycidyldiaminodiphenylmethane type epoxy compounds, aminophenol type epoxy compounds, aniline type epoxy compounds, and xylene diamine type epoxy compounds. .. Among these, bisphenol A type epoxy compounds and bisphenol F type epoxy compounds are preferable.

As the curing agent, a heavy addition type or a catalytic type is used. Examples of the heavy addition type curing agent include polyamines, acid anhydrides, polyphenols, and polymercaptans. Examples of the catalytic type curing agent include tertiary amines, imidazoles, and Lewis acid complexes. The method for curing the epoxy compound is not particularly limited, and a known method can be used.
The content of the curing agent is preferably in the range of 50 to 150 parts by mass with respect to 100 parts by mass of the epoxy compound. When it is 50 parts by mass or more, the epoxy compound is easily cured, and when it is 150 parts by mass or less, an effect according to the blending amount of the curing agent can be obtained.

As the matrix component, at least one selected from chloroprene rubber, styrene-butadiene rubber, butyl rubber, urethane rubber, and PVC is preferable from the viewpoint of achieving both water resistance and fire resistance. Among these, at least one selected from chloroprene rubber, styrene-butadiene rubber, and PVC is more preferable from the viewpoint of fire resistance, and chloroprene is particularly preferable from the viewpoint of increasing the hardness of the expansion residue and the expansion rate. At least one selected from rubber and styrene-butadiene rubber is more preferred.
The matrix component may be used alone or in combination of two or more.
When two or more types are used in combination, it is particularly preferable to use chloroprene rubber and styrene-butadiene rubber in combination. When styrene-butadiene rubber (SBR) and chloroprene rubber (CR) are used in combination, the content ratio (SBR / CR) of these is preferably 90/10 to 10/90 in terms of mass ratio, and is 80/20 to 80. It is more preferably 20/80.

The amount of bonded styrene of the styrene-butadiene rubber (SBR) used in the present invention is not particularly limited, but is, for example, 10 to 60% by mass, preferably 15 to 55% by mass, and more preferably 20 to 50% by mass. be. The amount of bound styrene can be measured by ^{1 1 H-NMR.}
The Mooney viscosity [ML (1 + 4) 100 ° C.] of the styrene-butadiene rubber is not particularly limited, but is, for example, 30 to 150, preferably 35 to 70, and more preferably 40 to 60.
The Mooney viscosity [ML (1 + 4) 100 ° C.] of the chloroprene rubber (CR) is not particularly limited, but is, for example, 25 to 150, preferably 30 to 100, and more preferably 35 to 75.
In this specification, the Mooney viscosity is a value measured according to JIS K6300.

The content of the matrix component in the heat-expandable fireproof material is preferably 20% by mass or more, more preferably 30% by mass or more, still more preferably 40% by mass or more, still more preferably 45% by mass or more. Further, it is preferably 70% by mass or less, more preferably 65% by mass or less, and further preferably 60% by mass or less. When the content of the matrix resin is equal to or higher than these lower limit values, the expandable graphite and the inorganic filler to be blended in the heat-expandable refractory material are appropriately retained by the matrix component, and it becomes easy to prevent them from falling off or elution. .. In addition, the hardness of the residue after expansion can be increased. When the content of the matrix component is not more than these upper limit values, the content of the heat-expandable graphite and the inorganic filler, which will be described later, can be increased, so that the fire resistance can be easily improved.

<Plasticizer>
The heat-expandable refractory material of the present invention may contain a plasticizer. When the matrix contains a plasticizer, the matrix component tends to flow, and the heat-expandable refractory material easily expands. When a polyvinyl chloride resin is used as the matrix component, it is preferable to use a plasticizer together. Moldability is improved by using a plasticizer together.

The plasticizer is not particularly limited, but is a phthalate ester plasticizer such as di-2-ethylhexylphthalate (DOP), dibutylphthalate (DBP), diheptylphthalate (DHP), diisodecylphthalate (DIDP), and di-2-. Fatty acid ester plasticizers such as ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), dibutyl adipate (DBA), epoxidized ester plasticizers such as epoxidized soybean oil, adipic acid ester plasticizers such as adipic acid ester and adipate polyester. , Trimeritic acid ester plasticizers such as Tory 2-ethylhexyl trimellitate (TOTM) and triisononyl trimellitate (TINTM), process oils such as mineral oils and the like. The plasticizer may be used alone or in combination of two or more.

When the heat-expandable refractory material of the present invention contains a plasticizer, the content thereof is preferably 10 to 90 parts by mass, more preferably 20 to 80 parts by mass with respect to 100 parts by mass of the matrix component. When the content of the plasticizer is within the above range, the moldability of the heat-expandable refractory material tends to be improved, and it is possible to prevent the molded product from becoming too soft.

<Heat-expandable graphite>
Thermally expandable graphite expands when heated, and is obtained by treating powders such as natural scaly graphite, pyrolytic graphite, and kiss graphite with an inorganic acid and a strong oxidizing agent to form a graphite interlayer compound. Yes, it is a kind of crystalline compound that maintains the layered structure of carbon. Examples of the inorganic acid include concentrated sulfuric acid, nitric acid and selenic acid. Examples of the strong oxidizing agent include concentrated nitric acid, perchloric acid, perchlorate, permanganate, dichromate, hydrogen peroxide and the like.
Further, the heat-expandable graphite obtained by the acid treatment as described above may be further neutralized with a neutralizing agent such as ammonia, an aliphatic lower amine, an alkali metal compound, and an alkaline earth metal compound. 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 content of the heat-expandable graphite in the heat-expandable refractory material is preferably 15% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, and preferably 60% by mass. % Or less, more preferably 50% by mass or less, still more preferably 45% by mass or less, still more preferably 40% by mass or less. When the content of the heat-expandable graphite is more than these lower limit values, it becomes easier to obtain expansion suitable for blocking the passage of flame, and when it is less than these upper limit values, the strength of the heat-expandable residue of the heat-expandable refractory material. Tends to be high, and workability, moldability, etc. are also good.

<Inorganic filler>
The heat-expandable refractory material of the present invention preferably contains an inorganic filler in addition to the matrix component and the heat-expandable graphite. The inorganic filler is an inorganic filler other than heat-expandable graphite. When the inorganic filler is heated to form an expansion heat insulating layer, it works as an aggregate to improve the strength of the thermal expansion residue and improve the fire resistance while increasing the heat capacity and suppressing heat transfer.

From the viewpoint of improving the moldability of the refractory material, the inorganic filler preferably contains the inorganic filler A having a specific gravity of 2.5 or more. By containing the inorganic filler A, the amount of matrix components per unit volume can be increased, which improves the brittleness of the refractory material and facilitates the improvement of moldability and residual hardness after expansion. .. From such a viewpoint, the specific gravity of the inorganic filler A is preferably 3 or more, more preferably 4 or more. For example, metal oxides, metal carbonates, etc., which will be described later, can be used as the inorganic filler A having a specific gravity of 2.5 or more. As the inorganic filler A, one type may be used alone, or a plurality of the inorganic fillers A may be used in combination.
The content of the inorganic filler A is preferably 50% by mass or more, more preferably 80% by mass or more, and further preferably 100% by mass with respect to the total amount of the inorganic filler.
As the inorganic filler, it is preferable to use the above-mentioned inorganic filler A having a specific gravity of 2.5 or more, but an inorganic filler having a specific gravity of less than 2.5 can also be used.

The inorganic filler that can be used in the present invention 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 ferrite, calcium carbonate, and the like. Metallic carbonates such as zinc carbonate, strontium carbonate and barium carbonate, metal hydroxides such as calcium hydroxide, magnesium hydroxide, aluminum hydroxide and hydrotalcite, calcium sulfates, gypsum fibers, calcium salts such as calcium silicate, Silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, active white clay, sepiolite, imogolite, phosphoric acid, glass fiber, glass beads, silica-based balloon, aluminum nitride, boron nitride, silicon nitride, carbon black. , Graphite, carbon fiber, carbon balloon, various metal powders, potassium titanate, magnesium sulfate, lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fibers, frying Metal phosphates such as ash, sodium phosphate, potassium phosphate, magnesium phosphate, aluminum phosphate, metal phosphates such as sodium phosphite, potassium phosphite, magnesium phosphite, aluminum phosphite , Ammonium polyphosphate, metal orthophosphoric acid salt, metal metaphosphate, metal tripolyphosphate and the like. The inorganic filler may be used alone or in combination of two or more.

Among these, as the inorganic filler, it is preferable to use a water-insoluble substance from the viewpoint of improving water resistance. From the viewpoint of water resistance and fire resistance, metal oxides, metal carbonates, poorly water-soluble phosphorus compounds and the like are preferable.

As a specific inorganic filler, at least one selected from iron oxide, zinc oxide, calcium carbonate, and aluminum phosphite is more preferable, and one selected from iron oxide and calcium carbonate is further preferable. It is also preferable to use iron oxide and calcium carbonate in combination.
It is also preferable that the inorganic filler contains at least iron oxide. By using iron oxide, even when the expansion coefficient of the heat-expandable refractory material is relatively large, the strength of the heat-expandable residue can be easily maintained and the fire resistance can be easily improved.
When iron oxide is used, the amount used is preferably 15% by mass or more, more preferably 25% by mass or more, and further preferably 40% by mass or more based on the total amount of the inorganic filler.
When iron oxide and calcium carbonate are used in combination, the mass ratio (iron oxide / calcium carbonate) is preferably 10/90 to 90/10, more preferably 20/80 to 80/20.

The content of the inorganic filler in the heat-expandable fire-resistant material is preferably 3% by mass or more, more preferably 8% by mass or more, still more preferably 13% by mass, from the viewpoint of improving the residual hardness and fire resistance. The above, and preferably 50% by mass or less, and more preferably 30% by mass or less.

The heat-expandable refractory material of the present invention preferably contains the heat-expandable graphite and the inorganic filler as described above, but the total content of the heat-expandable graphite and the inorganic filler in the heat-expandable refractory material is 35. It is preferably mass% or more. When the total content of the heat-expandable graphite and the inorganic filler is 35% by mass or more, it becomes easy to improve the expansion coefficient and the strength of the expansion residue of the heat-expandable refractory material, and the fire resistance is improved. The total content of the heat-expandable graphite and the inorganic filler is preferably 40% by mass or more from the viewpoint of improving fire resistance, and from the viewpoint of increasing the blending amount of the matrix component and ensuring the holding performance by the matrix component. It is preferably 80% by mass or less, more preferably 75% by mass or less, and further preferably 70% by mass or less.

<Other ingredients>
The heat-expandable refractory material may contain an organic flame retardant. Further, the heat-expandable refractory material may contain additives other than the above, such as a colorant and an antioxidant.
Examples of the organic flame retardant include a bromine-containing flame retardant, a nitrogen-containing flame retardant, and a phosphoric acid ester compound. In the present specification, an organic salt composed of an organic substance such as ethylenediamine phosphate and an inorganic substance is also used as an organic flame retardant.
Examples of the bromine-containing flame retardant include hexabromobenzene, pentabromotoluene, hexabromobiphenyl, decabromobiphenyl, hexabromocyclodecane, decabromodiphenyl ether, octabromodiphenyl ether, hexabromodiphenyl ether, and bis (pentabromophenoxy). Examples thereof include ethane, ethylene-bis (tetrabromophthalimide), tetrabromobisphenol A and the like.

Examples of the nitrogen-containing flame retardant include melamine derivatives such as melamine, butyl melamine, trimethylol melamine, hexamethylol melamine, hexamethoxymethyl melamine, and melamine phosphate, cyanurate, methyl cyanurate, diethyl cyanurate, and trimethyl cyanurate. Cyanuric acid derivatives such as triethyl cyanurate, isocyanuric acid, methyl isocyanurate, N, N'-diethyl isocyanurate, trismethyl isocyanurate, trisethyl isocyanurate, bis (2-carboxyethyl) isocyanurate, 1,3,5 Examples thereof include isocyanuric acid derivatives such as -tris (2-carboxyethyl) isocyanurate and tris (2,3-epoxypropyl) isocyanurate, melamine cyanurate, melamine isocyanurate, and ethylenediamine phosphate.

Examples of the phosphate ester compound include trimethyl phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, octyldiphenyl phosphate, tributoxyethyl phosphate, trichloroethyl phosphate, tris (2-chloropropyl) phosphate, and tris (2,3-dichloropropyl). ) Phosphate, Tris (2,3-dibromopropyl) phosphate, Tris (bromochloropropyl) phosphate, Bis (2,3-dibromopropyl) -2,3-dichloropropyl phosphate, Bis (chloropropyl) monooctyl phosphate, Tris Examples thereof include (2 ethylhexyl) phosphate, triphenyl phosphate, tricresyl phosphate (TCP), trixylenyl phosphate, cresildiphenyl phosphate, xylenyl diphenyl phosphate and the like.
The organic flame retardant may be used alone or in combination of two or more. Further, as the organic flame retardant, it is preferable to use melamine cyanurate or the like among the above. The content of the organic flame retardant in the heat-expandable refractory material is, for example, 1 to 35% by mass, preferably 5 to 30% by mass, and more preferably 8 to 20% by mass.

<Phosphorus component>
The heat-expandable refractory material of the present invention preferably contains substantially no phosphorus component. By substantially not containing a phosphorus component, it becomes easy to improve the water resistance of the heat-expandable refractory material, and good fire resistance is maintained even when used in a high humidity environment or an environment in contact with water. .. Further, by substantially not containing the phosphorus component, it is possible to prevent the fire protection equipment from being colored by the eluted phosphorus component and causing a poor appearance.
The fact that the heat-expandable refractory material does not substantially contain a phosphorus component means that the heat-expandable refractory material does not contain any phosphorus atom other than the phosphorus atom that is inevitably mixed with the heat-expandable refractory material. The atomic content may be, for example, less than 0.5% by mass, preferably less than 0.1% by mass, and even more preferably 0% by mass.

Therefore, the heat-expandable refractory material contains an inorganic filler, an organic flame retardant, and the like, but it is preferable not to use a compound containing a phosphorus atom. In particular, a flame retardant containing a phosphorus atom other than a poorly water-soluble phosphorus compound, such as ammonium polyphosphate and ethylenediamine phosphoric acid, lowers water resistance, and thus is preferably not contained in the heat-expandable fireproof material. Further, even if the heat-expandable refractory material does not contain a phosphorus component, sufficient fire resistance can be obtained by appropriately adjusting the types of the matrix component and the inorganic filler and increasing the amount of the inorganic filler. ..

The heat-expandable refractory material of the present invention is not particularly limited, but is preferably in the form of a sheet.
The thickness of the heat-expandable refractory material is not particularly limited, but is preferably 0.2 to 10 mm, more preferably 0.5 to 3.0 mm, from the viewpoint of fire resistance and handleability.

The coefficient of thermal expansion of the heat-expandable refractory material of the present invention is maintained high even after being immersed in water for a long time. Specifically, the expansion ratio after being immersed in water at 60 ° C. for one week is preferably 5 times or more, more preferably 10 times or more, still more preferably 20 times or more, from the viewpoint of fire resistance and water resistance. More preferably, it is 30 times or more. Further, the expansion ratio after being immersed in water at 60 ° C. for one week is preferably 70 times or less, more preferably 70 times or less, from the viewpoint of maintaining a constant residual hardness even after expansion and facilitating ensuring fire resistance. It is 60 times or less, more preferably 55 times or less, and even more preferably 50 times or less. The expansion ratio is measured by the method described in Examples.

Further, the heat-expandable refractory material of the present invention can maintain the residual hardness at a certain level or higher when expanded after being immersed in water for a long time. Specifically, the residual hardness when expanded after being immersed in water at 60 ° C. for one week is preferably 0.15 kgf / cm ² or more, more preferably 0. 20 kgf / cm ² or more, more preferably 0.27kgf / cm ² or more, and even more preferably 0.30kgf / cm ² or more. Further, the residual hardness after being immersed in water at 60 ° C. for 1 week is preferably 0.70 kgf / cm ² or less, more preferably from the viewpoint of maintaining a constant expansion ratio and facilitating ensuring fire resistance. Is 0.60 kgf / cm ² or less, more preferably 0.55 kgf / cm ² or less. The expansion ratio and the residual hardness described above can be measured by the method described in Examples.

The heat-expandable refractory material of the present invention can be produced, for example, as follows.
First, a predetermined amount of matrix components, heat-expandable graphite, and additives such as an inorganic filler, an organic flame retardant, a colorant, and an antioxidant, which are blended as necessary, are mixed with a kneader such as a kneading roll. Knead to obtain a refractory resin composition.
Next, the obtained fire-resistant resin composition is molded into a desired shape such as a sheet by a known molding method such as press molding, calender molding, extrusion molding, or the like to obtain a heat-expandable fire-resistant material. Can be done.

The heat-expandable refractory material may be used as a single heat-expandable refractory material, or may be used with other members attached as appropriate. For example, in the heat-expandable refractory material, members other than the heat-expandable refractory material may be laminated, or a base material, an adhesive layer, or the like may be laminated on the heat-expandable refractory material.
The base material may be provided, for example, on at least one surface of the heat-expandable refractory material. The base material may be a flammable material layer, a semi-incombustible material layer, or a non-combustible material layer. The thickness of the base material is not particularly limited, but is, for example, 5 μm to 1 mm. Examples of the material used for the flammable material layer include one type or two or more types such as cloth material, paper material, wood, and resin film. When the base material is a quasi-non-woven material layer or a non-woven material layer, examples of the material used include metal, inorganic material and the like, and more specifically, glass fiber, ceramic fiber, carbon fiber, etc. Examples thereof include woven fabrics and non-woven fabrics made of graphite fibers. Further, it may be a composite material of these fibers and metal, and for example, aluminum glass cloth is preferable. Further, for example, the pressure-sensitive adhesive layer may be provided on the above-mentioned base material, or may be formed directly on the surface of the heat-expandable refractory material. The pressure-sensitive adhesive layer is a layer composed of a pressure-sensitive adhesive, and examples of the pressure-sensitive adhesive include an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, and a rubber-based pressure-sensitive adhesive.

[Fire protection equipment]
The heat-expandable refractory material of the present invention is mounted and used in at least a part of fire protection equipment. Fire protection equipment is provided at the openings of various buildings to prevent the spread of fire through the openings. In addition, the fire protection equipment is a fire protection equipment that conforms to Article 2-9-2 of the Building Standards Act.
In addition, examples of buildings include various types of buildings such as detached houses, apartment houses, high-rise houses, high-rise buildings, commercial facilities, and public facilities, but buildings and condominiums are preferable.
In the case of buildings such as buildings and condominiums, when replacing each part used for fire protection equipment, complicated processes such as scaffolding are required, but in the present invention, heat with a low dissolution rate as described above. By using the expandable refractory material, the thermally expandable refractory material can be used for a long period of time, so that the frequency of recovery and replacement can be reduced. Furthermore, the low elution rate suppresses contamination due to elution and makes it difficult for fire protection equipment to have a poor appearance.

Further, in the present invention, the heat-expandable refractory material is preferably mounted in the lower part of the fire protection equipment. Since the heat-expandable refractory material of the present invention has a low elution rate, it is mounted under the fire protection equipment where moisture such as rainwater and dew condensation tends to accumulate, and even if it is in contact with water for a long period of time or is placed under high humidity. , Good fire resistance can be maintained for a long period of time.

In the present invention, the fire protection equipment is preferably fittings. Joinery constitutes windows, shoji screens, doors, doors, bran, etc. FIG. 1 shows an embodiment when the fitting is a window. As shown in FIG. 1, the fitting 10 includes, for example, a frame body 12 attached to an opening of a building, and a frame-shaped frame 31 arranged on the inner peripheral side of the frame body 12 and supported by the frame body 12. , A face material 30 attached to the inner peripheral side of the frame 31 is provided.
In the present embodiment, the lower frame 13 of the frame body 12 and the lower frame 33 of the frame body 31 form the lower part of the fire protection equipment (joint 10). Therefore, it is preferable that the heat-expandable refractory material is mounted on the lower frame 13, the lower stile 33, or both of them. The heat-expandable refractory material may be directly attached to the lower frame 13 or the lower stile 33, or a member attached to the lower frame 13 or the lower stile 33 (for example, a mounting member, a projecting piece, which will be described later). It may be attached to the lower frame 13 or the lower stile 33 via a reinforcing material or the like).

Further, a drainage route is provided in the fire protection equipment (joint 10), preferably the lower part of the fire protection equipment, specifically, the lower frame 13, the lower stile 33, or both of them. Water adheres to fire prevention equipment such as fittings 10 due to rainwater, dew condensation, etc., and the water collects in the lower part of fittings 10. Therefore, by providing a drainage route, water adhering to fittings 10 can be drained to the outside. can.
Further, the drainage route may include a drainage hole, and preferably includes a drainage hole provided in the lower part of the fire protection equipment, specifically, the lower frame 13, the lower stile 33, or both of them. Water tends to collect on the upper surface of the lower frame 13 and the lower stile 33, but by providing a drain hole, it becomes easier to prevent water from collecting in the fitting 10.

Further, the heat-expandable refractory material of the present invention is preferably arranged so as to block a drainage path provided in the lower part of the fire protection equipment (joining tool 10), particularly a drainage hole, when thermal expansion is caused by heating such as a fire. .. Therefore, the heat-expandable refractory material may be arranged so as to be close to the drainage path, particularly the drainage hole. Before the thermal expansion, the heat-expandable refractory material is arranged so as to be close to the drainage path, preferably the drainage hole, but not to block them.
Since the drainage route, particularly the drainage hole, is a part that ventilates the inside and the outside of the fire protection equipment, it becomes a path for flames in the event of a fire and may cause a fire spread. Therefore, when the heat-expandable refractory material closes the drainage path, particularly the drainage hole, by thermal expansion, it is possible to prevent the spread of fire that occurs through the drainage path. On the other hand, the heat-expandable refractory material has an elution rate of a predetermined value or less when immersed in water at 60 ° C. for 1000 hours, and is excellent in water resistance. Therefore, the heat-expandable refractory material comes into contact with water when it is close to the drainage path, especially the drainage hole, and is placed in a high humidity environment. Even in such an environment, the refractory material has high fire resistance for a long period of time. Can be maintained. Further, since it is excellent in water resistance, it is possible to prevent the appearance of the fire protection equipment from being deteriorated because the components constituting the heat-expandable refractory material such as the phosphorus compound do not elute.

Hereinafter, the arrangement position of the heat-expandable refractory material in the lower part of the fitting 10 will be described in more detail with reference to FIGS. 2 to 6. FIG. 2 shows the fittings according to the first embodiment. The fitting according to the first embodiment is a fitting in which a drainage hole is provided in the lower stile 33 and a heat-expandable refractory material is arranged at a position close to the drainage hole. The first embodiment is an example in which a window is used as a face material.

The lower stile 33 is composed of a frame-shaped member and is supported by the lower frame 13. The lower stile 33 includes both side walls 33A and 33B on the outdoor and indoor sides, an upper surface portion 33C connecting both side walls 33A and 33B, and a lower surface portion 33D.
The face material 30 is placed on the upper surface portion 33C above the upper surface portion 33C. The lower surface portion 33D is arranged below the upper surface portion 33C, forms a rectangular hollow portion 33E together with the both side walls 33A and 33B, and the upper surface portion 33C, and imparts a certain strength to the lower stile 33.
A block-shaped mounting member 34 is provided on the upper surface portion 33C, and the face member 30 is mounted on the mounting member 34. The face material 30 mounted on the mounting member 34 is sealed between the face material 30 and the lower stile 33 by the sealing member 35 on the mounting member 34. The face material 30 is supported by the lower stile 33 via the sealing member 35.

The upper surface portion 33C is provided with a drain hole 36A. The drainage hole 36A forms a part of a drainage path for draining the water accumulated on the upper surface portion 33C. Further, the lower surface portion 33D is also provided with the drain hole 36B in the same manner. The drainage hole 36B of the lower surface portion 33D is arranged at a position corresponding to the drainage hole 36A of the upper surface portion 33C, and the water discharged from the drainage hole 36A can be discharged to the outside of the fitting through the drainage hole 36B. Become. As a result, the drainage hole 36B forms a part of the drainage path. Further, the drain hole 36B of the lower surface portion 33D may also drain the water accumulated on the lower surface portion 33D.

A recess 34A is provided on the lower surface of the mounting member 34 arranged on the upper surface portion 33C, and the recess 34A is arranged so as to cover the drain hole 36A. A heat-expandable refractory material 40A is arranged inside the recess 34A. The heat-expandable refractory material 40 may be fitted into the recess 34A and arranged inside the recess 34A, or may be attached to the bottom surface of the recess 34A by an adhesive layer or the like.
With the above configuration, the heat-expandable refractory material 40A is arranged at a position close to the drain hole 36A. Therefore, when the heat-expandable refractory material 40A is heated and thermally expanded, it becomes possible to close the drain hole 36A, and when a fire occurs, it is possible to prevent the flame from passing through the drainage path and spreading the fire. Further, as described above, the heat-expandable fireproof material 40A has a low elution rate when immersed in water and is excellent in water resistance. Therefore, the heat-expandable refractory material 40A is provided in the vicinity of the drainage path, is in contact with water, and is placed in a high-humidity environment. Can be maintained at. Further, since it is excellent in water resistance, it is possible to prevent the appearance of the fire protection equipment from being deteriorated because the components constituting the heat-expandable refractory material such as the phosphorus compound do not elute.

In the first embodiment, the heat-expandable refractory material is attached to the mounting member, but the heat-expandable refractory material does not need to be attached to the mounting member and may be attached to another member. FIG. 3 shows as a second embodiment an aspect of a fitting in which a heat-expandable refractory material is attached to a member other than the mounting member. Hereinafter, only the differences between the second embodiment and the first embodiment will be described, and the parts for which the description is omitted are the same as those of the first embodiment.

In the second embodiment, a projecting piece 34F standing on the lower surface portion 33D is provided around the drain hole 36B of the lower surface portion 33D of the lower stile 33, and the heat-expandable refractory material 40B is attached to the projecting piece 34F. Be done. The projecting piece 34F may be provided integrally with the lower stile 33, or may be provided as a separate member.
Also in this embodiment, the heat-expandable refractory material 40B is arranged at a position close to the drain hole 36B. Therefore, when the heat-expandable refractory material 40B is heated and expanded, it becomes possible to close the drain hole 36B, and when a fire occurs, it is possible to prevent the flame from passing through the drainage path and spreading the fire. Further, the heat-expandable refractory material 40B comes into contact with water and is placed in a high-humidity environment. Can be maintained and no appearance failure occurs.

FIG. 4 shows the fittings according to the third embodiment. Hereinafter, only the differences between the third embodiment and the first embodiment will be described. In the third embodiment, the heat-expandable refractory material 40C is attached to the side wall 33A of the lower stile 33.
In the present embodiment, the heat-expandable refractory material 40C may be bonded to the side wall 33A via an adhesive layer or the like. However, the heat-expandable refractory material 40C does not need to be bonded via an adhesive layer. For example, a locking piece (not shown) is provided on the lower surface portion 33D and the upper surface portion 33C to lock the heat-expandable refractory material 40C. It may be arranged between the piece and the side wall 33A and locked by the locking piece.

Also in this embodiment, the heat-expandable refractory material 40C is arranged at a position close to the drain hole 36B. Therefore, when the heat-expandable refractory material 40C is heated and thermally expanded, it becomes possible to close the drain hole 36B, and when a fire occurs, it is possible to prevent the flame from passing through the drainage path and spreading the fire. Further, the heat-expandable refractory material 40C comes into contact with water and is placed in a high-humidity environment. Can be maintained and no appearance failure occurs.

When the lower stile 33 is provided with a drain hole as in each of the above embodiments, the heat-expandable refractory material is used as long as it closes any of the drain holes of the lower stile 33 when heated and expanded. The arrangement position is not limited to the configuration of each of the above embodiments, and can be arranged at various positions. For example, the heat-expandable refractory material may be arranged on the upper surface portion 33C, the lower surface portion 33D, or the like, or may be arranged at other positions.
Further, in each of the above embodiments, the lower surface portion 33D is provided on the frame 33, but the lower surface portion 33D may be omitted. In that case, the heat-expandable refractory material may be arranged at a position that closes the drain hole 36A of the upper surface portion 33C when it is heated and expanded. Further, the mounting member 34, the sealing material 35, and the like may be omitted, and the face material may be attached to the frame by another configuration.
Further, in each of the above embodiments, one of the plurality of drainage holes is closed by a heat-expandable fireproof material that expands by heating, but the plurality of drainage holes constituting the drainage path are formed. , It may be blocked by one or more heat-expandable fireproof materials that expand by heating.

In each of the above embodiments, the lower stile is provided with a drain hole, but the lower frame may be provided with a drain hole. FIG. 5 shows, as a fourth embodiment, a fitting in which a drainage hole is provided in the lower frame and a heat-expandable refractory material is arranged at a position close to the drainage hole in the lower frame. In addition, this embodiment is an example in which a sliding window is used as a face material.

In the present embodiment, the lower frame 13 is provided with a rail 23, and the lower frame 33 is supported by the lower frame 13 via the rail 23. A face material is attached to the inner peripheral side of the lower stile 33. The lower frame 13 is provided with a first lower frame material 13A on the outdoor side and a second lower frame material 13B on the indoor side, and the first and second rails 23A are provided on the respective frame materials 13A and 13B, respectively. , 23B are provided. Then, the first lower stile 33A and the second lower stile (not shown) constituting the lower stile 33 pass through the first and second rails 23A and 23B, respectively, and the first lower frame member 13A, It is supported by each of the second lower frame members 13B. A first face material 30A and a second face material (not shown) are attached to the inner peripheral sides of the first lower frame 33A and the second lower frame (not shown).

The first lower frame member 13A is formed in a frame shape by the side wall 14A on the outdoor side, the side wall 14B on the indoor side, the upper surface portion 14C, and the lower surface portion 14D, and the hollow portion 14E is formed inside. Drain holes 16A and 16B are provided in the first lower frame member 13A, specifically, the outdoor side wall 14A and the upper surface 14C, respectively.
Further, projecting pieces 15A and 15B are provided around the drain holes 16A and 16B, and the heat-expandable refractory materials 40D and 40E are attached to the projecting pieces 15A and 15B. The projecting piece 15A is erected on the side wall 14A, for example, and the projecting piece 15B is erected on the upper surface portion 14C. The projecting pieces 15A and 15B may be provided integrally with the lower frame member 13A, or may be provided as separate members.

In the present embodiment, even if water is stored on the upper surface of the lower frame 13 (first lower frame member 13A), it can be placed outside the fitting 10 through the drain hole 16B, the inside of the hollow portion 14E, and the drain hole 16A. Water is drained. Further, in the present embodiment, the heat-expandable refractory materials 40D and 40E are arranged at positions close to the drain holes 16A and 16B, respectively. Therefore, when the heat-expandable refractory materials 40D and 40E are heated and thermally expanded, the drain holes 16A and 16B can be closed, and when a fire occurs, the flame passes through the drainage path and spreads. Can be prevented. Further, the heat-expandable refractory materials 40D and 40E are brought into contact with water and are arranged in a high humidity environment, but the above-mentioned elution rate is equal to or less than a predetermined value and excellent in water resistance, so that they are high for a long period of time. Fire resistance can be maintained and appearance defects do not occur.

FIG. 6 describes another aspect in which the drain hole is provided in the lower frame as the fifth embodiment. Hereinafter, the fifth embodiment will be described mainly on the differences from the fourth embodiment, and the parts for which the description is omitted are the same as those of the fourth embodiment.
In the fifth embodiment, the lower frame and the reinforcing material inserted inside the lower frame are provided with drain holes, and the heat-expandable refractory material is arranged at a position close to the drain holes of the reinforcing material. The fifth embodiment is an example in which a sliding window is used as a face material.

Also in the present embodiment, the lower frame 13 is provided with rails 23 (first and first rails 23A, 23B), and the lower stiles 33 (first and second lower stiles 33A, 33B) are provided via the rails. It is supported by the lower frame 13. Face materials 30A and 30B constituting the window are attached to the inner peripheral sides of the lower stiles 33A and 33B. In the present embodiment, the lower frame 13 is made of the frame material 13X, and the frame material 13X is provided with the first and second rails 23A and 23B.

The frame member 13X is formed in a frame shape in which a hollow portion 14E is formed inside, and drain holes 16A and 16B are provided on the side wall 14A and the upper surface portion 14C on the outdoor side, respectively. Further, the reinforcing member 18 is inserted into the hollow portion 14E, and the reinforcing member 18 is also provided with drain holes 16C and 16D. In the present embodiment, the heat-expandable refractory material 40F is attached to the reinforcing material 18, whereby the heat-expandable refractory material 40F is arranged at a position close to the drain hole 16C of the reinforcing material.

In the present embodiment, even if water is stored on the upper surface of the frame member 13X, the water is drained to the outside of the fitting through the drain holes 16B, 16D, 16C, 16A (that is, the drainage path). Further, also in the present embodiment, the heat-expandable refractory material 40F is arranged at a position close to the drainage hole 16C forming a part of the drainage path. Therefore, when the heat-expandable refractory material 40F is heated and thermally expanded, it becomes possible to close the drain hole 16C, and when a fire occurs, it is possible to prevent the flame from passing through the drainage path and spreading the fire. Further, since the heat-expandable refractory material 40F is close to the drainage hole, it comes into contact with water and is placed in a high humidity environment. Therefore, high fire resistance can be maintained for a long period of time, and appearance defects do not occur.

In the fourth and fifth embodiments described above, the heat-expandable refractory material is attached to a projecting piece provided on the lower frame 13 or a reinforcing material, but when it is heated and thermally expanded, it is shown. , As long as it is arranged at a position that closes the drainage hole, it may be arranged at another position, for example, it may be attached to the frame material itself constituting the lower frame, or a reinforcing material or a protrusion provided on the lower frame. It may be attached to a member other than the above.
Further, in the fourth embodiment, the heat-expandable refractory material is provided in the vicinity of each of the plurality of drainage holes constituting the drainage path, while in the fifth embodiment, in the vicinity of one drainage hole. Although the embodiment in which one heat-expandable refractory material is provided is shown, in the fourth embodiment, one heat-expandable refractory material may be provided in the vicinity of one drainage hole. Further, in the fifth embodiment, a heat-expandable refractory material may be provided in the vicinity of each of the plurality of drain holes.

Further, in each of the above embodiments, the heat-expandable refractory material is arranged at a position close to the drainage hole and shows a mode of closing the drainage hole when it is thermally expanded. You may close other than the hole. For example, in the first to third embodiments, on the upper surface of the upper surface 33C and the lower surface 33D of the lower stile 33, between the side walls 33A and 33B may form a part of the drainage path. In such a case, for example, a heat-expandable refractory material is provided on the inner surface of the side wall of the lower stile 33, and the heat-expandable refractory material causes both side walls on the upper surface of the upper surface portion 33C and the lower surface portion 33D. You may close the gap.

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

[Evaluation method]
(1) Evaporation rate A sample weight of 10 g (two in this example and comparative example) of a test piece prepared from the obtained heat-expandable refractory material was immersed in 200 g of pure water and placed in a closed container at 60 ° C. After soaking for 1000 hours, a sample was taken out, and the soaked pure water was evaporated and dried at 60 ° C. for 96 hours, and the mass of the generated precipitate was measured. Using that value, the elution rate was calculated by the following formula and used as an index of water resistance.
Elution rate (%) = [(mass of precipitate) / (mass of heat-expandable refractory material before immersion in pure water)] x 100
(2) Expansion coefficient A test piece (length: 100 mm, width: 100 mm, thickness: thickness of the heat-expandable refractory material) prepared from the obtained heat-expandable refractory material is sealed in 500 mL of pure water at 60 ° C. After soaking in the container for 1 week, the sample was taken out. The test piece prepared by evaporating and drying the sample at 60 ° C. for 96 hours was placed on the bottom surface of a stainless steel holder (101 mm square, height 80 mm), supplied to an electric furnace, and heated at 600 ° C. for 30 minutes. bottom. Then, the thickness at the highest portion of the test piece was measured, and the expansion ratio was calculated by ((thickness of the test piece after heating) / (thickness of the test piece before heating)).

(3) Residual hardness The heated test piece whose expansion ratio was measured was supplied to a compression tester (“Finger Filling Tester” manufactured by Kato Tech Co., Ltd.), and a 3-point indenter with a diameter of 1 mm was used at 0.1 cm / sec. It was compressed at a rate, the maximum stress from the top surface of the residue to 10 mm compression was measured, and the compressive strength (kgf / cm ² ) of the test piece after combustion was measured.

(Examples 1 to 10, Comparative Examples 1 to 3)
In the formulation shown in Table 1 below, the matrix component, plasticizer, heat-expandable graphite, inorganic filler, and organic flame retardant are put into a roll and kneaded at 150 ° C. for 5 minutes to obtain a refractory resin composition. Obtained. The obtained refractory resin composition was press-molded at 150 ° C. for 3 minutes to obtain a heat-expandable refractory material having a thickness of 1.5 mm. Each component used in each Example and Comparative Example is as follows.

(1) Matrix component-CR Tosoh Corporation "Y-20E", chloroprene rubber Mooney viscosity [ML (1 + 4) 100 ° C]: 43-53
-"JSR1500" manufactured by SBR JSR Corporation, styrene-butadiene rubber, amount of bonded styrene: 23.5% by mass, Mooney viscosity [ML (1 + 4) 100 ° C.]: 52
-PVC "TK-1000" manufactured by Shin-Etsu Chemical Co., Ltd., average degree of polymerization 1030, polyvinyl chloride resin (2) Plasticizer-DOP di-2-ethylhexyl phthalate, "DOP" manufactured by J-PLUS Co., Ltd.
(3) Heat-expandable graphite / heat-expandable graphite "CA-60N" manufactured by Air Water Inc.
(4) Inorganic filler / iron oxide: Titan Kogyo Co., Ltd. "BL-100", specific density 5.1
-Zinc oxide: Made by Sakai Chemical Industry Co., Ltd., trade name "Zinc oxide 1 type", specific density 5.7
-Calcium carbonate: Bikita Powder Industry Co., Ltd. "Whiten BF-300", specific density 2.93
-Aluminum hydroxide: Hayashi Kasei Co., Ltd. "C-305", specific density 2.42
-Aluminum phosphite: "APA100" manufactured by Taihei Kagaku Sangyo Co., Ltd.
-Ammonium polyphosphate: "AP422" manufactured by Clariant AG
(5) Organic flame retardant, melamine cyanurate: "MC-4000" manufactured by Nissan Chemical Industries, Ltd.
-EDAP (Ethylenediamine Phosphate) Albright & Wilson "Amgard EDAP"

The heat-expandable refractory material of each example had a low elution rate when immersed in water at 60 ° C. for 1000 hours, and the expansion ratio and residual hardness were maintained at a constant level even after immersion in water. Therefore, good fire resistance can be maintained for a long period of time even if it is mounted under the fire protection equipment, particularly the fire protection equipment that is in contact with water or tends to be highly humid.
On the other hand, the heat-expandable refractory materials of each comparative example have a high elution rate when immersed in water at 60 ° C. for 1000 hours. Therefore, it is difficult to maintain good fire resistance for a long period of time when the fire protection equipment is mounted under the fire protection equipment, particularly the fire protection equipment which is in contact with water or tends to have high humidity. Further, since the elution rate is high, phosphorus components and the like may be eluted to color the fire protection equipment and spoil the appearance of the fire protection equipment.

10 Joinery (fire protection equipment)
12 Frame body 13 Lower frame 18 Reinforcing material 23 Rail 30 Face material 31 Frame body 33 Lower frame 34 Mounting member 35 Sealing member 16A to 16D, 36A, 36B Drainage hole 40A to 40F Thermal expansion refractory material

Claims (5)

A fire protection facility equipped with at least a part of a heat-expandable refractory material having an elution rate of 3% or less when immersed in water at 60 ° C. for 1000 hours .
The heat-expandable refractory material contains a matrix component, heat-expandable graphite, and an inorganic filler.
The matrix component contains at least one selected from the group consisting of chloroprene rubber, styrene-butadiene rubber, butyl rubber, and urethane rubber.
Fire protection equipment in which the heat-expandable refractory material does not substantially contain a phosphorus component (excluding those in which the heat-expandable refractory material contains a vinyl chloride resin or a chlorinated vinyl chloride resin) . The fire protection equipment according to claim 1, wherein the heat-expandable fireproof material is mounted below the fire prevention equipment. The fire protection equipment according to claim 1 or 2 , which is used for at least one of a building and an apartment. The fire protection equipment has a drainage route and
The fire protection equipment according to any one of claims 1 to 3 , wherein the heat-expandable refractory material is arranged so as to block the drainage path when it is thermally expanded by heating. The fire protection equipment has a drainage hole and
The fire protection equipment according to any one of claims 1 to 4 , wherein the heat-expandable refractory material is arranged so as to close the drain hole when it is thermally expanded by heating.

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