JP2000345644A - Partition wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure fire-resistant performance by arranging layered products each made of an incombustible face material with a specific thickness and a thermal expansion fire-resistant sheet face to face on both sides of studs. SOLUTION: Layered products 5 each made of an incombustible face material or a quasi-incombustible face material 1 with the thickness of 5-15 mm and a thermal expansion fire-resistant sheet 2 with the thickness of 0.1-5 mm are arranged face to face on both sides of studs 3 to form a partition wall. The face material 1 is formed with a plaster board, for example, and the sheet 2 is formed with a resin composition containing a thermal expansion inorganic matter, a resin composition containing a thermoplastic resin and/or a rubber material, or a resin composition containing an epoxy resin. The thickness change when a heat quantity of 50 kW/m2 is radiated to the sheet 2 for 30 min (thickness after radiation/thickness before radiation) is set to 1.1-100, thereby the one-hour fire-resistant performance can be satisfied, and the partition wall can be made thinner and more lightweight than before.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a partition wall.

[0002]

2. Description of the Related Art Conventionally, a building (three-story building, hospital, hotel, boarding house, etc.) having three stories or more must have a fireproof structure having a predetermined fireproof performance based on the Building Standard Law. In the above fire-resistant structure, materials and structures having fire resistance are used for ceiling materials, partition walls, floor materials, and the like. As the partition wall having the fire resistance performance for one hour, for example, a partition wall in which a refractory face material such as a calcium silicate plate is laminated on both sides of a metal stud is cited.

However, since the thickness of the calcium silicate plate used for the partition wall needs to be 15 mm or more, there is a problem that the total weight of the partition wall becomes heavy and the handling property is deteriorated. further,
Since the total thickness of the partition wall is 60 mm or more, there is a problem that the effective area in the room is reduced.

Also, a 12 mm thick gypsum board and 0.6 mm
A fire-resistant face material consisting of a laminate with a thick steel plate is placed on each side of the metal stud with the gypsum board inside, and the space of the opposing gypsum board is filled with rock wool insulation material and integrated. A partition wall (total thickness 60 mm) is on the market. However, this partition wall has a problem in that when the thickness of the refractory face material is reduced, the rock wool shrinks during heating and the heat insulation performance is reduced.

[0005]

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a partition wall which satisfies a fire resistance performance of one hour and has a reduced total thickness and a reduced weight as compared with a conventional partition wall. I will provide a.

[0006]

According to the present invention, a partition wall comprises:
5 to 15 mm thick non-combustible face material or semi-combustible face material and 0.1
A laminate with a thermally expandable refractory sheet having a thickness of about 5 mm is arranged and integrated so as to face both sides of the stud.

Hereinafter, the present invention will be described in detail.

As shown in the partially cutaway perspective view of FIG. 1, the partition wall of the present invention has a non-combustible face material or a semi-combustible face material 1.
And a heat-expandable refractory sheet 2 are arranged and integrated so as to face both sides of the stud 3.

As a method of arranging and integrating the laminates 5 on both sides of the stud 3, for example, as shown in a schematic cross-sectional view in FIG. Lumber 1
There is a method of inserting a tapping screw 4 penetrating through the laminated body 5 from the side and fastening to the stud 3.

In the partition wall, the intumescent refractory sheet 2 may be arranged on the outer side or on the side of the stud. For example, as shown in a schematic sectional view of FIG. They may be arranged so that

When the partition wall of the present invention is heated by a fire or the like, the heat-expandable refractory sheet 2 burns and expands.
The combustion residues form a refractory insulation layer (not shown). The fire is blocked by this fire-resistant heat-insulating layer, thereby preventing the spread of fire.

Further, since the non-combustible face material or the quasi-non-combustible face material tends to shrink by heating, there is a problem that a gap is formed at the abutting portion between the laminated bodies, and the fireproof / fireproof performance is greatly reduced. there were. However, in the partition wall of the present invention, even if a gap is generated due to shrinkage of the face material, the fire-resistant heat-insulating layer formed by burning and expanding the heat-expandable refractory sheet fills the gap, thereby deteriorating the fire prevention and fire resistance performance. I will not let you.

As the non-combustible surface material or quasi-non-combustible surface material, for example, calcium silicate plate, slate plate, perlite plate, ALC, gypsum board, wood chip cement plate, glass wool plate, rock wool plate and the like are preferable. Used. Those having crystallization water are preferred from the viewpoint of the auxiliary heat insulating effect,
In particular, gypsum board is more preferable because it is inexpensive and easily available.

As the plaster board, for example, JIS
A Plain gypsum board (GB-
R), decorative gypsum board (GB-D) specified in JIS A 6911, waterproof gypsum board (GB-S) specified in JIS A 6912, reinforced gypsum board (GB-F) specified in JIS A 6913 , JIS A6
The sound-absorbing gypsum board (GB-P) specified in 301 is mentioned.

The surface of the non-combustible face material or quasi-non-combustible face material may be provided with a surface decoration for imparting a design property such as decorative paper, wallpaper, painting, or the like, if necessary.

The thickness of the non-combustible face material or quasi-non-combustible face material is limited to 5 to 15 mm. When the thickness is less than 5 mm, the auxiliary heat insulating effect and the reinforcing effect are insufficient, and when the thickness is more than 15 mm, the reduction in weight and thickness which is the object of the present invention cannot be realized.

The thickness of the heat-expandable refractory sheet is 0.1
Limited to ~ 5mm. When the thickness is less than 0.1 mm, a sufficient thickness of the fire-resistant heat insulating layer is not formed due to thermal expansion, so the fire prevention and fire resistance performance is insufficient. When the thickness exceeds 5 mm, the weight becomes heavy and the fire-resistant heat insulation formed during combustion is formed. The thickness of the layer becomes excessively thick, resulting in excessive quality.

As the stud 3, as shown in FIGS. 1 and 2, for example, a metal having a U-shaped cross section is used.

The method of laminating the non-combustible face material or quasi-non-combustible face material and the heat-expandable refractory sheet is not particularly limited. If the heat-expandable refractory sheet has an adhesive property, the adhesive strength is used. May be stacked and fixed. If the heat-expandable refractory sheet does not have adhesive strength, it can be bonded using an adhesive. In particular, when the resin component is an epoxy resin described later, it can be bonded at the time of curing by laminating it with a non-combustible surface material or a semi-combustible surface material before the epoxy resin is cured.

The voids formed by the studs and the laminate fixed on both sides thereof are made of glass wool, rock wool,
A heat insulating material such as a ceramic mat may be filled. Further, when the non-combustible face material or quasi-non-combustible face material or the heat-expandable refractory sheet is disposed outside the partition wall, a reinforcing plate such as a metal plate or a reinforcing plate having a honeycomb structure may be laminated. Good.

Examples of the metal plate include an iron plate, a stainless steel plate, a galvanized steel plate, and an aluminum-zinc alloy-plated steel plate. The thickness of the metal plate is preferably 0.1 to 3 mm.

The heat-expandable refractory sheet includes a resin composition containing a heat-expandable inorganic substance, a resin composition (I) containing a thermoplastic resin and / or a rubber substance, or a resin composition containing an epoxy resin. Those formed from product (II) are preferred.

Examples of the resin composition containing the heat-expandable inorganic substance include a resin composition containing a resin component, a heat-expandable inorganic substance, and other inorganic components. Examples of the resin component include thermoplastic resins described later. Resins, rubber substances, epoxy resins and the like can be mentioned. As the thermally expandable inorganic substance,
For example, neutralized heat-expandable graphite, vermiculite and the like can be mentioned.

As the resin composition (I) containing the thermoplastic resin and / or the rubber substance, the thermoplastic resin and / or
Alternatively, a rubber material, a phosphorus compound, neutralized heat-expandable graphite or vermiculite, and an inorganic filler are preferable.

The thermoplastic resin and / or rubber material is not particularly limited, and may be, for example, a polypropylene resin,
Polyolefin resins such as polyethylene resins; poly (1-) butene resins, polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene resins, polycarbonate resins, polyphenylene ether resins, acrylic resins, polyamide resins , Polyvinyl chloride resin, phenol resin, polyurethane resin, polybutene, polychloroprene, polybutadiene, polyisobutylene, butyl rubber, nitrile rubber and the like.

The above-mentioned thermoplastic resin and / or rubber substance is
They may be used alone or in combination of two or more. A blend of two or more resins may be used as the base resin in order to adjust the melt viscosity, flexibility, tackiness, etc. of the resin.

The thermoplastic resin and / or rubber substance may be further crosslinked or modified within a range that does not impair the fire resistance of the heat-expandable fire-resistant sheet of the present invention.
The method for cross-linking the thermoplastic resin and / or rubber substance is not particularly limited, and a cross-linking method generally performed on the thermoplastic resin or rubber substance, for example, a cross-linking method using various cross-linking agents, peroxides, etc., an electron beam A cross-linking method by irradiation and the like can be mentioned.

The phosphorus compound is not particularly limited.
For example, red phosphorus; various phosphates such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylendiphenyl phosphate; phosphorus such as sodium phosphate, potassium phosphate, and magnesium phosphate Acid metal salts; ammonium polyphosphates; and compounds represented by the following general formula (1). Among these, from the viewpoint of fire resistance, red phosphorus, ammonium polyphosphates, and compounds represented by the following general formula (1) are preferable, and ammonium polyphosphates are more preferable in terms of performance, safety, cost, and the like. preferable.

[0029]

Embedded image

Wherein R ¹ and R ³ are hydrogen, carbon number 1
It represents a 16 linear or branched alkyl group or an aryl group having 6 to 16 carbon atoms. R ² is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms,
Represents an aryl group having 6 to 16 carbon atoms or an aryloxy group having 6 to 16 carbon atoms.

The flame retardant effect is improved by adding a small amount of the above-mentioned red phosphorus. As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of moisture resistance, safety such as not spontaneously igniting during kneading, those obtained by coating the surface of red phosphorus particles with a resin are preferably used. .

The above-mentioned ammonium polyphosphates are not particularly restricted but include, for example, ammonium polyphosphate and melamine-modified ammonium polyphosphate. Of these, ammonium polyphosphate is preferably used in view of handleability and the like. Commercially available products include, for example, "AP422" and "AP462" manufactured by Clariant, "Sumisafe P" manufactured by Sumitomo Chemical Co., "Terage C60" manufactured by Chisso,
"Terage C70", "Terage C80", and the like.

The compound represented by the general formula (1) is not particularly restricted but includes, for example, methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, 2-methylpropyl Phosphonic acid, t-butylphosphonic acid, 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctyl Examples include phosphinic acid, phenylphosphinic acid, diethylphenylphosphinic acid, diphenylphosphinic acid, and bis (4-methoxyphenyl) phosphinic acid. Among them, t-butylphosphonic acid is expensive, but is preferable in terms of high flame retardancy.
The above phosphorus compounds may be used alone or in combination of two or more.

The neutralized heat-expandable graphite is obtained by neutralizing heat-expandable graphite, which is a conventionally known substance. The heat-expandable graphite is a natural scale-like graphite, pyrolytic graphite, powder such as quiche graphite,
Produced by treating with inorganic acids such as concentrated sulfuric acid, nitric acid, and selenic acid and strong oxidizing agents such as concentrated nitric acid, perchloric acid, perchlorate, permanganate, dichromate, and hydrogen peroxide. It is a graphite intercalation compound that is a crystalline compound while maintaining a layered structure of carbon.

The heat-expandable graphite obtained by the acid treatment as described above is further neutralized by neutralizing it with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound or the like. The heat-expandable graphite is used.

The aliphatic lower amine is not particularly restricted but includes, for example, monomethylamine, dimethylamine,
Trimethylamine, ethylamine, propylamine, butylamine and the like. The alkali metal compound and the alkaline earth metal compound are not particularly limited,
For example, hydroxides, oxides, carbonates, sulfates, organic acid salts of potassium, sodium, calcium, barium, magnesium and the like can be mentioned.

The particle size of the neutralized heat-expandable graphite is preferably 20 to 200 mesh. When the particle size is smaller than 200 mesh, the degree of expansion of graphite is small, a predetermined refractory insulation layer cannot be obtained, and when the particle size is larger than 20 mesh, there is an advantage that the degree of expansion of graphite is large,
When kneaded with a thermoplastic resin and / or a rubber substance, dispersibility deteriorates, and deterioration of physical properties cannot be avoided.

Commercial products of the neutralized heat-expandable graphite include, for example, "CA-60S" manufactured by Nippon Kasei Co., Ltd., "GREP-EG" manufactured by Tosoh Corporation, and "GRAF" manufactured by UCAR Corporation.
GUARD "and the like.

The inorganic filler is not particularly limited.
For example, metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide, aluminum hydroxide, hydrotalcite, and the like. Hydrous inorganic substances; Basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate, barium carbonate and other metal carbonates; calcium salts such as calcium sulfate, gypsum fiber and calcium silicate; silica, diatomaceous earth, dawsonite, barium sulfate ,
Talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun , Charcoal powder, various metal powders, potassium titanate, magnesium sulfate "MOS" (trade name), lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber , Fly ash, dehydrated sludge and the like. These may be used alone or in combination of two or more.

As the inorganic filler, a combination of a water-containing inorganic substance and a metal carbonate is particularly preferable. Since the above-mentioned hydrated inorganic substance and metal carbonate function as an aggregate, it is considered that they contribute to the improvement of residue strength and the increase of heat capacity.

Further, the above-mentioned hydrated inorganic substance is endothermic due to water generated by the dehydration reaction during heating, and the temperature rise is reduced to obtain high heat resistance. Also, oxide remains as a heating residue. This is particularly preferable in that it works as an aggregate to improve the residue strength. Among them, magnesium hydroxide and aluminum hydroxide have different temperature ranges in which the dehydrating effect is exhibited, so when used in combination, the temperature range in which the dehydrating effect is exhibited becomes wider, and a more effective temperature rise suppressing effect is obtained, so that the combination is used. Is preferred.

Further, the above-mentioned metal carbonates such as calcium carbonate and zinc carbonate are considered to promote expansion by reaction with the above-mentioned phosphorus compound. Particularly, when ammonium polyphosphate is used as the phosphorus compound, a high expansion effect is obtained. Is obtained.
In addition, it acts as an effective aggregate and forms a residue having high shape retention after burning.

The particle size of the inorganic filler is 0.5 to
100 μm is preferred, and more preferably about 1 to 50 μm.
m. Further, it is more preferable to use a combination of an inorganic filler having a large particle size and a small filler having a small particle size. By using the combination, it is possible to achieve high packing while maintaining the mechanical performance of the sheet. .

Commercially available hydrous inorganic substances include, for example, aluminum hydroxide, "Hygilite H-42M" having a particle size of 1 μm (manufactured by Showa Denko KK), and "Higilite H-31" having a particle size of 18 μm (Showa Denko). Electric Works Co., Ltd.).

Examples of the commercially available calcium carbonate include, for example, "Whiteton SB Red" (1.8 μm particle size) (manufactured by Shiraishi Calcium Co., Ltd.) and "Whiteton BF30" having a particle size of 8 μm.
0 "(manufactured by Bihoku Powder Chemical Co., Ltd.) and the like.

The amount of the phosphorus compound and the neutralized heat-expandable graphite in the resin composition (I) (the total amount of both) is based on 100 parts by weight of the thermoplastic resin and / or synthetic rubber. 20 to 500 parts by weight are preferred. If the total amount of the phosphorus compound and the neutralized thermally expandable graphite is less than 20 parts by weight, sufficient thermal expandability cannot be obtained, and 500
If the amount exceeds the weight part, uniform dispersion becomes difficult, so that it is difficult to form a uniform thickness.

The weight ratio of the neutralized heat-expandable graphite to the phosphorus compound (heat-expandable graphite / phosphorus compound) is as follows:
0.01 to 9 is preferred. If the ratio of the heat-expandable graphite increases, the expanded graphite during combustion scatters and a sufficient refractory heat-insulating layer is not formed.If the ratio of the phosphorus compound increases, a sufficient refractory heat-insulating layer is not formed. Heat insulation cannot be obtained.

The amount of the inorganic filler in the resin composition (I) is preferably 50 to 500 parts by weight based on 100 parts by weight of the thermoplastic resin and / or the synthetic rubber. If the amount is less than 50 parts by weight, a fire-resistant expansion sheet having sufficient fire resistance cannot be obtained, and if it exceeds 500 parts by weight, the mechanical properties of the fire-resistant expansion sheet deteriorate.

The resin composition (II) containing the epoxy resin is preferably composed of an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite and an inorganic filler.

The epoxy resin is not particularly limited, but is basically obtained by reacting a monomer having an epoxy group with a curing agent. Examples of the monomer having an epoxy group include monomers of a bifunctional glycidyl ether type, a glycidyl ester type, and a polyfunctional glycidyl ether type.

Examples of the above-mentioned bifunctional glycidyl ether type monomer include polyethylene glycol type, polypropylene glycol type, neopentyl glycol type, 1,6-hexanediol type, trimethylolpropane type, propylene oxide-bisphenol A type,
Monomers such as hydrogenated bisphenol A type are exemplified.

Examples of the glycidyl ester type monomer include monomers such as hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, and p-oxybenzoic acid type.

Examples of the polyfunctional glycidyl ether type monomer include monomers such as phenol novolak type, orthocresol novolak type, DPP novolak type, and dicyclopentadiene / phenol type.

These monomers having an epoxy group may be used alone or in combination of two or more.

As the curing agent, a polyaddition type or a catalyst type is used. Examples of the polyaddition type curing agent include polyamine, acid anhydride, polyphenol, and polymercaptan. Examples of the catalyst type curing agent include tertiary amines, imidazoles, Lewis acid complexes and the like.

The method for curing the epoxy resin is not particularly limited, and can be performed by a known method.

As the phosphorus compound, neutralized heat-expandable graphite and inorganic filler used in the resin composition (II), the same components as those used in the resin composition (I) are used. Can be

In the above resin composition (II), if the compounding amount of the phosphorus compound is too small, sufficient shape retention of the combustion residue cannot be obtained, and if it is too large, the mechanical properties are greatly reduced and the resin cannot be used. So, epoxy resin 100
50 to 150 parts by weight based on parts by weight is preferred.

In the above resin composition (II), if the blending amount of the neutralized heat-expandable graphite is too small, sufficient thermal expansion properties cannot be obtained. Epoxy resin 1
15 to 40 parts by weight per 100 parts by weight is preferred.

In the above resin composition (II), if the amount of the inorganic filler is too small, sufficient fire resistance cannot be obtained, and if the amount is too large, the mechanical properties are greatly reduced, and the resin cannot be used. The amount is preferably 50 to 500 parts by weight based on 100 parts by weight of the resin.

Even if the resin composition itself is flame retardant, if the shape retention is insufficient, the brittle combustion residue collapses and penetrates the flame, so that the shape retention is sufficient. The use of the resin composition greatly differs depending on whether or not. By using an epoxy resin as the resin, the resin itself forms a char (carbonized) layer during combustion, and forms a fire-resistant heat-insulating layer strong enough to maintain its shape.

In the above resin composition, the neutralized heat-expandable graphite expands by heating to form a refractory heat-insulating layer, thereby preventing heat transmission. By heating, the phosphorus compound dehydrates and foams, and also acts as a carbonization catalyst. The inorganic filler then contributes to an increase in heat capacity, and the phosphorus compound has the shape-retaining ability of the expanded heat-insulating layer.

In the above resin composition, in addition to phenol-based, amine-based and sulfur-based antioxidants, metal harm inhibitors, antistatic agents, stabilizers, crosslinking agents, lubricants as long as the physical properties are not impaired. , A softener, a pigment and the like may be added.

The above resin composition can be obtained by kneading the above components using a known kneading device such as a Banbury mixer, a kneader mixer, or a two-roll mill. The resin composition can be formed into a heat-expandable refractory sheet by a conventionally known molding method such as press molding, extrusion molding, or calendar molding.

The above-mentioned heat-expandable refractory sheet has a thickness of 50 kW / m ^2.
The thickness change (thickness D ₁ after irradiation / thickness D ₀ before irradiation) when irradiating 30 minutes of heat is preferably 1.1 to 100 (fold). If the change in thickness is less than 1.1 (fold), the fire resistance is insufficient, and if it exceeds 100 (fold), the strength of the fire-resistant heat-insulating layer formed by expansion due to heating is reduced, and the layer is easily collapsed.

[0066]

Embodiments of the present invention will be described below with reference to the drawings.

Preparation of heat-expandable refractory sheet The following amounts of butyl rubber, polybutene, hydrogenated petroleum resin, metallocene polyethylene resin, epoxy resin, neutralized heat-expandable graphite, vermiculite,
A resin composition comprising ammonium polyphosphate, aluminum hydroxide and calcium carbonate was melt-kneaded with two rolls to obtain heat-expandable refractory sheets A, B, C, D and E having a predetermined thickness.

The thickness change of the above-mentioned heat-expandable refractory sheet before and after heating was measured by the following measuring method. The results are shown in Table 1. 50kW for heat-expandable refractory sheet
/ M ² was measured for 30 minutes when irradiated with heat for 30 minutes,
The thickness change before and after the irradiation of the calorific value was calculated from the following equation. Thickness change (times) = Thickness after irradiation D ₁ / Thickness before irradiation D ₀ This thickness change is regarded as a volume expansion coefficient.

[0069]

[Table 1]

The components used in the table are as follows. -Butyl rubber: "Butyl rubber # 06" manufactured by Exxon Chemical
5)-Metallocene PE (polyethylene): "EG8200" manufactured by Dow Chemical Company-Polybutene: "Polybutene 100" manufactured by Idemitsu Petrochemical Company
R "・ Hydrogenated petroleum resin:" ESCOLETS 53 "manufactured by Tonex
20 "・ Epoxy resin:“ Bisphenol F type epoxy monomer E807 ”manufactured by Yuka Shell Co. ・ Curing agent:“ Diamine-based curing agent EKFL ”manufactured by Yuka Shell
052 "

Ammonium polyphosphate: "AP422" manufactured by Clariant Co., Ltd. Neutralized heat-expandable graphite: "GREP" manufactured by Tosoh Corporation
-EG "・ Aluminum hydroxide:" Heidilite H- "manufactured by Showa Denko KK
31 ”・ Calcium carbonate:“ Whiteton BF30 ”manufactured by Bihoku Powder Chemical Co., Ltd.
0 "

(Examples 1, 3 and Comparative Example 1) Lamination of the heat-expandable refractory sheet having the composition and thickness shown in Table 1 and the non-combustible or semi-combustible face material having the material and thickness shown in Table 2 The body was arranged on both sides of the metal stud with the heat-expandable refractory sheet side inside, and was tightened and integrated with a tapping screw to produce a partition wall shown in FIG.

(Example 2) A laminate of a heat-expandable refractory sheet having the composition and thickness shown in Table 1 and a non-combustible or quasi-non-combustible face material having the material and thickness shown in Table 2 was used. After disposing on both sides of the metal stud with the refractory sheet side as the outside and tightening with a tapping screw to integrate them (the configuration of FIG. 3), a 0.3 mm-thick iron plate is provided as a reinforcing surface material on the thermally expandable refractory sheet side. Laminated.

Example 4 A laminate of a heat-expandable refractory sheet having the composition and thickness shown in Table 1 and a non-combustible or quasi-non-combustible face material having the material and thickness shown in Table 2 was subjected to thermal expansion. The partition wall shown in FIG. 3 was produced by arranging the metal studs on both sides with the refractory sheet side as the outside and fastening them together with tapping screws to integrate them.

(Example 5) In place of a heat-expandable refractory sheet, Medicicut [manufactured by Mitsubishi Metal Paint Co., thickness change (D ₁ /
D ₀ ) = 3 times] and a 4 mm thick media cut and 10
The laminate with the ALC having a thickness of mm was arranged on both sides of the metal stud with the medich cut side as the inner side, and was tightened and integrated with a tapping screw to produce a partition wall having the same configuration as that of FIG.

(Example 6) A fire barrier [manufactured by Sumitomo 3M Limited, thickness change (D
₁ / D ₀ ) = 4 times], a laminated body of a 5 mm-thick fire barrier and a 10 mm-thick gypsum board is arranged on both sides of the metal stud with the fire barrier side as the inner side, and fastened with tapping screws. Then, a partition wall having the same configuration as that of FIG. 1 was produced.

Example 7 A laminate of a heat-expandable refractory sheet having the composition and thickness shown in Table 1 and a non-combustible or quasi-non-combustible face material having the material and thickness shown in Table 2 was subjected to thermal expansion. After being arranged on both sides of the metal stud with the refractory sheet side inside and being tightened and integrated by tapping screws (the configuration of FIG. 1), glass wool (density of 10 kg / m ³ ,
(Thickness: 50 mm) to form a partition wall.

(Comparative Example 2) Without using a heat-expandable refractory sheet at all, calcium silicate plates each having a thickness of 5 mm were arranged on both sides of the metal studs, and were integrated by tapping screws.
A partition wall was made.

(Comparative Example 3) A gypsum board having a thickness of 5 mm was arranged on both sides of a metal stud without using any heat-expandable refractory sheet, and integrated with a tapping screw to form a partition wall.

The following fire resistance evaluation was performed on the partition walls of the above Examples and Comparative Examples, and the results are shown in Table 2. Perform a fire resistance test in accordance with JIS A 1304,
One hour later, the surface temperature of the pillar was measured with a thermocouple.
The temperature was measured at eight locations on the stud surface, and the average value is shown in Table 2.

[0081]

[Table 2]

The materials used in the table are as follows.・ Calcium silicate plate: “NA Lux” manufactured by Nichias Co., Ltd. • Gypsum board: “Tiger Board” manufactured by Yoshino Gypsum Co., Ltd. ・ Perlite plate: “Ask Perlite Sheet” manufactured by Ask Co. Stud: 0.5mm thick x 30mm x 30mm iron square pipe

[0083]

The partition wall according to the present invention has the above-described structure, and satisfies the fire resistance performance for one hour, and the total thickness is reduced as compared with the conventional partition wall, so that the weight is reduced. I have. Further, even if a non-combustible face material or a quasi-non-combustible face material is used that is thinner than a conventional partition wall, a heat insulating material filled between the face material and the face material is used.
It does not shrink during heating and does not lower the heat insulation performance.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view schematically showing a partition wall of an embodiment.

FIG. 2 is a cross-sectional view schematically showing a partition wall of the embodiment.

FIG. 3 is a cross-sectional view schematically showing another partition wall of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Noncombustible surface material or semi-combustible surface material 2 Thermal expansion resistant fireproof sheet 3 Stud 4 Tapping screw 5 Laminate

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DD01 DE01 DE04 EA09 EA10 FA03 GA12 GA24 GA28 GA29 GA42 GA45 HA02 HA03 HA07 HA21 HA32 HA33 HA34 HB02 HB03 HB04 HD11 HE01 HF11 HF12 JA04 JA13 JA22 JA25 JA28 2E162 CA02 CA06 CA13 CA21 CA26 CA31 CB02 CB03 CB05 CB07 CB08 CD09 CE01 CE10 FA00 FA06

Claims (7)

[Claims] 1. A laminated body of a non-combustible face material or quasi-non-combustible face material having a thickness of 5 to 15 mm and a heat-expandable refractory sheet having a thickness of 0.1 to 5 mm is arranged and integrated so as to face both sides of a stud. A partition wall characterized by being made. 2. The heat-expandable refractory sheet according to claim 1, wherein the heat-expandable refractory sheet is 50 kW / m.
^2. The partition according to claim 1, wherein a change in thickness (thickness D ₁ after irradiation / thickness D ₀ before irradiation) when the heat amount of ² is irradiated for 30 minutes is 1.1 to 100 (fold). wall. 3. The partition wall according to claim 1, wherein the heat-expandable refractory sheet is formed of a resin composition containing a heat-expandable inorganic substance. 4. The heat-expandable refractory sheet according to claim 1, wherein the heat-expandable refractory sheet comprises a resin composition (I) containing a thermoplastic resin and / or a rubber substance. Partition walls. 5. The partition wall according to claim 1, wherein the heat-expandable refractory sheet is made of a resin composition (II) containing an epoxy resin. 6. The partition wall according to claim 1, wherein said non-combustible face material or quasi-non-combustible face material is gypsum board. 7. The partition wall according to claim 1, wherein a heat insulating material is filled in a space formed by the stud and the laminate.