JP2015134498A - laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminate usable as a partition of a space excellent in flame shielding property and heat insulation property, for forming a uniform a heat insulation layer upon fire breaking.SOLUTION: In a laminate used for a partition of a space, an inorganic fiber sheet (B) having a basis weight of 100 g/mor more and 2,000 g/mor less is arranged on one surface side of a thermally-foamable resin sheet (A), and an inorganic fiber sheet (C) having a basis weight below 100 g/mis arranged on the other surface side of the thermally-foamable resin sheet (A).

Description

  The present invention relates to a novel laminate used for partitioning a space, and is suitable for partitioning a building internal space.

2. Description of the Related Art Conventionally, fire prevention shutters, fireproof screens, and the like that are arranged so as to separate a preset fire prevention compartment are known as fire prevention compartment facilities inside a building. When a fire breaks out, they are installed from the ceiling to the floor so as to partition the interior of the building to form a fire prevention compartment. For example, non-combustible film materials such as steel and steel plate shutters are used as fire-proof shutters and silica cloth is used as fire-proof screens. In recent years, they are lighter and more flexible than the former and are closed. The latter is often used because of the advantage of preventing accidents.

  The fireproof screen made of the silica cloth or the like has excellent flame barrier properties, but has insufficient heat insulation, the temperature of the fireproof screen on the fire side and the back side rises, and fire spreads from the back side. There is a fear. For such a problem, for example, Patent Document 1 describes that a heat-foaming fire-resistant paint layer is formed on one side or both sides of a screen body.

JP-A-11-293809

However, the resin component of the refractory paint layer melts when exposed to high temperatures simply by applying a heat-foamable refractory paint on one or both sides of the fireproof screen body as in Patent Document 1. There is a possibility that the film becomes sagging and a sagging of the coating film occurs, and as a result, a heat insulating layer having a uniform thickness cannot be formed.

The present invention has been made in view of the problems of these prior arts, and is a laminate that forms a uniform heat insulating layer in the event of a fire, is excellent in flame shielding and heat insulating properties, and can be used for partitioning spaces. The purpose is to obtain.

In order to solve such problems, the present inventors have intensively studied, and as a result, the inorganic fiber sheet (B) having a specific basis weight on one surface side of the thermally foamable resin sheet (A), the thermally foamable resin. The inventors came up with a laminate in which another inorganic fiber sheet (C) is arranged on the other surface side of the sheet (A), and completed the present invention.

That is, the present invention has the following characteristics.
1. It is a laminate used to partition the space,
On one surface side of the thermally foamable resin sheet (A), an inorganic fiber sheet (B) having a basis weight of 100 g / m ² or more and 2000 g / m ² or less,
On the other side of the thermally foamable resin sheet (A), an inorganic fiber sheet (C) having a basis weight of less than 100 g / m ² ,
The laminated body characterized by the above-mentioned.
2. The inorganic fiber sheet (B) is a woven fabric. The laminated body as described in.
3. The inorganic fiber sheet (C) is a braided fabric and / or a non-woven fabric. Or 2. The laminated body as described in.

The laminated body of the present invention comprises an inorganic fiber sheet (B) having a basis weight of 100 g / m ² or more and 2000 g / m ² or less on one surface side of the thermally foamable resin sheet (A), and the thermally foamable resin sheet (A). An inorganic fiber sheet (C) having a basis weight of less than 100 g / m ² is disposed on one surface side, and a uniform heat insulating layer is formed in the event of a fire and is excellent in flame shielding and heat insulating properties.

It is sectional drawing which shows an example of the laminated body of this invention. It is sectional drawing which shows another example of the laminated body of this invention.

1. Thermally foamable resin sheet (A)
2. Inorganic fiber sheet (B)
3. Inorganic fiber sheet (C)

  Hereinafter, modes for carrying out the present invention will be described.

The present invention relates to a laminate used for partitioning an interior space of a building, and an inorganic fiber sheet (B) having a basis weight of 100 g / m ² or more and 2000 g / m ² or less on one surface side of a thermally foamable resin sheet (A). ), An inorganic fiber sheet (C) having a basis weight of less than 100 g / m ² is disposed on the other surface side of the thermally foamable resin sheet (A). The basis weight means the mass per unit area.

[Heat-foaming resin sheet (A)]
The thermally foamable resin sheet (A) of the present invention is usually a thin film, but foams and forms a carbonized heat insulation layer when the ambient temperature reaches a predetermined temperature due to a fire or the like. The thermally foamable resin sheet (A) of the present invention preferably contains a thermoplastic resin, a flame retardant, a foaming agent, a carbonizing agent, a filler, and the like. Each of these components exerts excellent heat insulation and heat resistance protection by expressing functions such as sheet expansion, carbonized heat insulation layer formation, and generation of non-flammable gas due to the combined action of each other in the event of a fire. be able to.

It does not specifically limit as a thermoplastic resin, A well-known thing can be used. For example, vinyl resin, polystyrene resin, polypropylene resin, acrylic resin, polyamide resin, polyurethane resin, vinyl acetate resin and the like can be mentioned. Natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, acrylic rubber, epichlorohydrin rubber, polyvulcanized rubber, silicone rubber Further, rubber materials such as fluorine rubber and urethane rubber can also be used. These can be used alone or in combination of two or more.

Among them, in the present invention, it is preferable to use a material that can be implemented at least at a temperature at which the temperature of the thermally foamable sheet is lower than the expansion temperature of the thermally foamable sheet. As such a thermoplastic resin, specifically, for example, vinyl toluene-butadiene copolymer, vinyl toluene-acrylic acid ester copolymer, vinyl toluene-methacrylic acid ester copolymer, styrene-butadiene copolymer, Examples thereof include resins such as ethylene-vinyl acetate copolymers or terpolymers of two monomers constituting these copolymers and acrylic acid monomers, methacrylic acid monomers, etc., one or two of these It is preferable to include the above.

  The flame retardant generally exhibits at least one effect such as a dehydration cooling effect, an incombustible gas generation effect, and a carbonization promotion effect of a thermoplastic resin in a fire, and has an action of suppressing combustion of the thermoplastic resin. The flame retardant used in the present invention is not particularly limited as long as it has such an action, and a known flame retardant can be used. For example, tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, tri (β-chloroethyl) phosphate, tributyl phosphate, tri (dichloropropyl) phosphate, triphenyl phosphate, tri (dibromopropyl) phosphate Organophosphorus compounds such as phosphate, chlorophosphonate, bromophosphonate, diethyl-N, N-bis (2-hydroxyethyl) aminomethyl phosphate, di (polyoxyethylene) hydroxymethyl phosphonate; chlorination Chlorine compounds such as polyphenyl, chlorinated polyethylene, diphenyl chloride, triphenyl chloride, pentachloride fatty acid ester, perchloropentacyclodecane, chlorinated naphthalene, tetrachlorophthalic anhydride; trioxide Nchimon, antimony compounds such as antimony pentachloride; phosphorus trichloride, phosphorus pentachloride, ammonium phosphate, phosphorus compounds such as ammonium polyphosphate; other zinc borate, boron compounds such as boric acid sodium and the like. A flame retardant can be used 1 type or in combination of 2 or more types. These may be either uncoated products or coated products. In particular, the use of ammonium polyphosphate is preferable because the dehydration cooling effect and the incombustible gas generation effect can be more effectively exhibited.

  The mixing ratio of the flame retardant is preferably 50 to 1000 parts by weight, more preferably 100 to 800 parts by weight, and more preferably 200 to 600 parts by weight with respect to 100 parts by weight (solid content) of the thermoplastic resin. In this invention, a flame retardant is contained in a comparatively high ratio in this way, and favorable performance can be obtained in heat-resistant protection.

  The foaming agent generally has an action of generating a non-combustible gas in the event of a fire, foaming a carbonized thermoplastic resin and a carbonizing agent, and forming a carbonized heat insulating layer having pores. The foaming agent is not particularly limited as long as it has such an action, and a known foaming agent can be used. Examples thereof include melamine and derivatives thereof, dicyandiamide and derivatives thereof, azodicarbonamide, urea, thiourea and the like. These can be used alone or in combination of two or more. Among these, melamine, dicyandiamide, azodicarbonamide and the like are preferable because they are excellent in generating efficiency of nonflammable gas. In particular, melamine is more preferable.

The mixing ratio of the foaming agent is preferably 5 to 500 parts by weight, more preferably 30 to 200 parts by weight with respect to 100 parts by weight (solid content) of the thermoplastic resin. By being in such a range, excellent foaming properties can be exhibited, and good performance in heat insulation and heat protection can be obtained.

  The carbonizing agent generally has a function of forming a thick carbonized heat insulating layer excellent in heat insulating properties by dehydrating and carbonizing itself with the carbonization of the thermoplastic resin in the event of a fire. The carbonizing agent used in the present invention is not particularly limited as long as it has such an action, and a known carbonizing agent can be used. For example, polyhydric alcohols such as pentaerythritol, dipentaerythritol and trimethylolpropane; starch, casein and the like can be mentioned. A carbonization agent can be used 1 type or in combination of 2 or more types. In particular, pentaerythritol and dipentaerythritol are preferable in that they are excellent in dehydration cooling effect and carbonized heat insulation layer forming action.

The mixing ratio of the carbonizing agent is preferably 5 to 600 parts by weight, more preferably 10 to 400 parts by weight with respect to 100 parts by weight (solid content) of the thermoplastic resin. By being in such a range, a dehydration cooling effect and a carbonized heat insulation layer forming action can be exhibited, and good performance in heat insulation and heat protection can be obtained.

  The filler generally has an action of maintaining the strength of the carbonized heat insulating layer. The filler is not particularly limited as long as it has such an action, and a known filler can be used. For example, carbonates such as calcium carbonate, sodium carbonate, magnesium carbonate and aluminum oxide; metal oxides such as titanium dioxide and zinc oxide; silica, clay, talc, clay, kaolin, diatomaceous earth, shirasu, mica, wollastonite, Examples thereof include inorganic powders such as quartz sand, quartz stone, quartz, leechite, alumina, fly ash and the like. These can be used alone or in combination of two or more. Further, the shape of the filler is not particularly limited, and examples thereof include a spherical shape, a granular shape, a plate shape, a rod shape, a flake shape, a needle shape, and a fibrous shape.

  The blending ratio of the filler is preferably 10 to 300 parts by weight, more preferably 20 to 250 parts by weight with respect to 100 parts by weight (solid content) of the thermoplastic resin. By being in such a range, the strength of the carbonized heat insulating layer can be maintained, and good performance in heat protection can be obtained.

Moreover, in addition to the said component, the thing containing a liquid halogen compound is suitable for a thermally foamable resin sheet. Such a liquid halogen compound is a component that effectively acts to improve the flexibility, heat-protective property and the like of the thermally foamable sheet. In addition, the liquid state said here means showing the property of a liquid at normal temperature (25 degreeC). Further, the liquid halogen compound does not include those having phosphorus. Examples of the halogen include fluorine, chlorine, bromine, iodine, etc. Among them, chlorine is preferable. Suitable liquid halogen compounds include chlorinated paraffins.

  Further, the thermally foamable resin sheet preferably contains a fiber substance in addition to the above components. In this invention, the effect etc. which hold | maintain the shape of a carbonization heat insulation layer increase by including such a fiber substance. The fiber length of the fiber material is preferably 1 to 30 mm, more preferably 2 to 20 mm.

  Examples of the fiber material include inorganic fibers such as rock wool, glass fiber, silica-alumina fiber, ceramic fiber, and potassium titanate fiber, and organic fibers such as carbon fiber, pulp fiber, polypropylene fiber, vinyl fiber, and aramid fiber. It is done. Among these, heat-resistant inorganic fibers and carbon fibers are preferable, and glass fibers are most preferable. When glass fiber is used, the performance excellent also in the foamability at the time of a heating is exhibited, and the porous carbonization layer excellent in heat insulation and heat-resistant protection property is easy to be obtained.

The mixing ratio of the fiber substance is preferably 0.1 to 30 parts by weight, more preferably 1 to 20 parts by weight with respect to 100 parts by weight (solid content) of the thermoplastic resin.

What is necessary is just to shape | mold the heat-foamable sheet | seat of this invention by the well-known method for the mixture obtained by mixing each component uniformly. When mixing each component, it is also possible to mix a solvent or to heat as necessary. When a thermoplastic resin such as beads or pellets is used, each component may be mixed while being heated to a softening temperature of the thermoplastic resin by a heating device and kneaded with a kneader or the like.

  Molding methods include, for example, pouring the mixture into a mold, removing the mold after drying, applying the mixture to a release paper with a warm coating machine, and winding the mixture kneaded with a kneader, etc. A method of processing into a sheet by a machine, a method of supplying a mixture kneaded by a kneader or the like between rolls to process into a sheet, a method of forming a mixture into pellets and then processing into a sheet by an extrusion molding machine, Banbury Examples thereof include a method of rolling a mixture kneaded with a mixer or a mixing roll with a calendar composed of a plurality of hot rolls to process it into a sheet.

  The thickness of the thermally foamable resin sheet (A) of the present invention may be appropriately set depending on the application site and the like, but is preferably about 0.2 to 10 mm, more preferably about 0.5 to 6 mm.

[Inorganic fiber sheet (B)]
The basis weight of the inorganic fiber sheet (B) of the present invention is 100 g / m ² or more and 2000 g / m ² or less (preferably 200 g / m ² or more and 1500 g / m ² or less). By being in such a range, while having high flame-shielding property, even when exposed to high temperature, it is excellent in shape retention property and can hold | maintain high intensity | strength. Moreover, the heat-foamable resin sheet (A) can form a heat insulating layer having a uniform thickness. The mechanism of action is not clear, but when exposed to high temperatures such as in a fire, the inorganic fiber sheet (B) having excellent strength acts as a base material for the thermally foamable resin sheet (A). It is speculated that the foamable resin sheet (A) can uniformly foam in a certain direction to form a heat insulating layer.

Although it does not specifically limit as an inorganic fiber used for an inorganic fiber sheet (B), For example, rock wool, glass fiber, a silica fiber, an alumina fiber, a silica-alumina fiber, a carbon fiber, a silicon carbide fiber, a ceramic fiber, titanium A potassium acid fiber, a metal fiber, etc. are mentioned. Two or more of these can be used in combination. Since such inorganic fibers have excellent heat resistance and are difficult to melt even at high temperatures, the effects of the present invention can be exhibited. Moreover, in this invention, the inorganic fiber processed with resin, such as an acrylic resin, a polyurethane resin, a silicone resin, can also be used as needed.

  The aspect of the inorganic fiber sheet (B) of the present invention is not particularly limited as long as it satisfies the above range, but may be any aspect such as a woven fabric, a nonwoven fabric, a braided fabric, and the like. Moreover, these can also be used in combination of 2 or more types. Among these, in the present invention, it is preferable to use a woven fabric. Thereby, the effect of the present invention can be further enhanced.

In the present invention, the woven fabric is formed by a fiber yarn group in which inorganic fiber bundles are constrained by twisting or the like, and is configured by vertically intersecting the warp yarn and the weft yarn substantially at right angles. Examples of the structure include plain weave, twill weave, satin weave, warp double weave, weft double weave, warp double weave, pile weave, twine weave, and crest weave.

The inorganic fiber sheet (B) preferably has a heat resistant temperature of 500 ° C. or higher (more preferably 700 ° C. or higher). Examples of such inorganic fiber sheet (B) include those formed from inorganic fibers such as silica fibers, alumina fibers, silica-alumina fibers, and stainless steel fibers. Woven fabric is preferred. Moreover, in this invention, what coated one side and / or both sides of the textile fabric with resin, such as an acrylic resin, a polyurethane resin, and a silicone resin, can also be used as needed.

  The thickness of the inorganic fiber sheet (B) of the present invention is preferably 0.1 to 5 mm (more preferably 0.3 to 2 mm). By being in such a range, the effects of the present invention are more easily obtained.

[Inorganic fiber sheet (C)]
The basis weight of the inorganic fiber sheet (C) of the present invention is less than 100 g / m ² (preferably 5 g / m ² or more and 95 g / m ² or less, more preferably 10 g / m ² or more and 90 g / m ² or less). By being in such a range, a heat insulating layer having a uniform thickness can be formed without hindering foaming of the thermally foamable resin sheet (A) under a high temperature such as a fire. Although this mechanism of action is not clear, since the foamable resin sheet (A) enters the gap between the fibers constituting the inorganic fiber sheet (C), the resin component of the thermally foamable resin sheet (A) is in a molten state. Even in this case, sagging and the like can be prevented, and furthermore, since the inorganic fiber sheet (C) is lightweight, foaming of the foamable resin sheet (A) is not hindered. As a result, it is assumed that a uniform heat insulating layer can be formed.

As an inorganic fiber used for an inorganic fiber sheet (C), the thing similar to the said inorganic fiber sheet (B) is mentioned. Moreover, in this invention, it is excellent in heat resistance, and it is preferable to contain the inorganic fiber especially glass fiber which is hard to fuse | melt at high temperature. Moreover, in this invention, the inorganic fiber processed with resin, such as an acrylic resin, a polyurethane resin, a silicone resin, can also be used as needed.

  As an aspect of the inorganic fiber sheet (C) of the present invention, any one of a woven fabric, a non-woven fabric (paper), a braided fabric, etc. may be used as long as it satisfies the above range. Two or more of these can be used in combination. In the present invention, it is particularly preferable to use any one of a nonwoven fabric, a braided fabric, or a combination of a nonwoven fabric and a braided fabric.

In the present invention, the non-woven fabric is a fabric (sheet-like) formed by interlacing independent fibers one by one or bonding them with heat or an adhesive (formed without weaving) ). In addition, the braided fabric is a fabric yarn group that is unidirectionally aligned and a fiber yarn group that is aligned in a different direction, or that is laminated and bonded. The structure of the braid is not limited as long as it has a mesh (mesh) structure. Depending on the number of axes of the fiber yarn group, there are many types such as a biaxial braid, a triaxial braid, and a four-shaft braid. A shaft assembly fabric or the like can be given.

  The thickness of the inorganic fiber sheet (C) is preferably 0.01 to 3 mm (more preferably 0.05 to 1 mm). By being in such a range, the effects of the present invention are more easily obtained.

Moreover, in this invention, the said inorganic fiber sheet (B) and the said inorganic fiber sheet (C) may contain an organic fiber in addition to an inorganic fiber, unless the effect of this invention is inhibited. As such a sheet, for example, one formed from a yarn group in which inorganic fibers and organic fibers are mixed, one formed from a group of inorganic fibers and a group of organic fibers, or a laminate of inorganic fiber sheets and organic fiber sheets And the like.

Examples of the organic fiber include pulp fiber, polyester fiber, polypropylene fiber, aramid fiber, vinylon fiber, polyethylene fiber, polyarylate fiber, PBO fiber, nylon fiber, acrylic fiber, vinyl chloride fiber, and cellulose fiber. The organic fiber may be melted in a temperature range of about 150 ° C. to be in a liquid state, but is preferably not melted in such a temperature range. Two or more of these can be used in combination.

[Laminate]
The laminate of the present invention is suitably used for partitioning spaces, particularly partitioning of building interior spaces, and the thermal foamable resin sheet (A), the inorganic fiber sheet (B), and the inorganic fiber sheet. (C) is laminated. Specifically, as shown in FIG. 1, when each is composed of one sheet, the inorganic fiber sheet (B) is provided on one surface side of the thermally foamable resin sheet (A), and the other surface side. It has the aspect [(B) / (A) / (C)] by which the inorganic fiber sheet (C) is arranged.

Further, in the laminate [(B) / (A) / (C)], as shown in FIG. 2, two or more layers can be used in a stacked manner in accordance with the desired heat protection property. As a laminated body of this invention, the following aspects are mentioned, for example.
(1) (B) / (A) / (C)
(2) (B) / (A ′) / (A) / (C)
(3) (B) / (C ′) / (A) / (C)
(4) (B) / (C ′) / (A ′) / (A) / (C)
(5) (C ') / (B) / (A) / (C)
(6) (C ′) / (A ′) / (B) / (A) / (C)
(7) (A ') / (C') / (B) / (A) / (C)
(8) (B ') / (B) / (A) / (C)
Etc. The above (A ′), (B ′), and (C ′) indicate the second layer of each sheet.

In the present invention, it is particularly preferable to use two or more layers of (A) (the above (2), (4), (6), (7)). In this case, it is sufficient that at least one kind of (A) satisfies the above condition (1), but it is preferable that two or more layers (A) satisfy the above condition (1) (see above). (2), (4), (6)).
Moreover, when using two or more layers of (C), (C) can be arrange | positioned on both surfaces of (A), and also (B) can be arrange | positioned on the one surface ((3), (4) above) ).
Furthermore, when using two or more layers of (B), the aspect (for example, [(B ') / (A) / (B)], [(B') / (C ) / (A) / (B)] etc. is desirable.

As a method of laminating the thermally foamable resin sheet (A), the inorganic fiber sheet (B), and the inorganic fiber sheet (C),
(I) a method of laminating using an adhesive;
(II) A method of pressing and laminating at the time of manufacturing the thermally foamable resin sheet (A),
(III) A method of combining (I) and (II) above,
Etc.
As the adhesives (I) and (III), known adhesives can be used. In the present invention, it is preferable to use a heat-resistant adhesive. The pressure bonding as in the above (II) is a method in which the thermally foamable resin sheet (A), the inorganic fiber sheet (B) and / or the inorganic fiber sheet (C) are directly laminated (stacked adjacent to each other). is there. In the present invention, it is particularly preferable that the thermally foamable resin sheet (A) and the inorganic fiber sheet (C) are directly laminated. Thereby, the effect of the present invention can be further enhanced.

  Examples are given below to clarify the features of the present invention.

The materials used are shown below.
-Thermoplastic resin: vinyl acetate / ethylene copolymer resin (softening temperature 66 ° C)
-Foaming agent: Melamine-Carbonizing agent: Pentaerythritol-Flame retardant: Ammonium polyphosphate-Filler: Titanium oxide-Inorganic fiber sheet (B1): Silica fiber fabric (weighing 700 g / m ² , thickness 0.7 mm, satin weave , SiO ₂ content 97 wt%)
Inorganic fiber sheet (B2): Silica fiber fabric (weighing 500 g / m ² , thickness 0.6 mm, twill weave, SiO ₂ content 99% by weight)
Inorganic fiber sheet (B3): Silica fiber fabric (weighing 1200 g / m ² , thickness 1.4 mm, satin weave, SiO ₂ content 99% by weight)
Inorganic fiber sheet (B4): Silica-alumina fiber fabric (weighing 650 g / m ² , thickness 0.7 mm, satin weave, Al ₂ O ₃ content 68%, SiO ₂ content 27% by weight, B ₂ O ₃ Content 5%)
Inorganic fiber sheet (B5): carbon fiber fabric (weighing 410 g / m ² , thickness 0.8 mm, plain weave)
-Inorganic fiber sheet (C1): Glass nonwoven fabric (weighing 30 g / m ² , thickness 0.25 mm)
Inorganic fiber sheet (C2): glass nonwoven fabric (weight per unit 60 g / m ² , thickness 0.4 mm)
Inorganic fiber sheet (C3): Glass nonwoven fabric (weighing 85 g / m ² , thickness 0.6 mm)
Inorganic fiber sheet (C4): Glass fabric (mesh) (mesh weight 15 g / m ² , thickness 0.2 mm, mesh opening 1-2 mm)
Organic fiber sheet: polyester nonwoven fabric (weight per unit area 20 g / m ² , thickness 0.01 mm)

[Manufacture of thermally foamable resin sheet (A)]
(Heat-foaming resin sheet (A))
100 parts by weight of a thermoplastic resin, 60 parts by weight of a foaming agent, 60 parts by weight of a carbonizing agent, 300 parts by weight of a flame retardant, and 75 parts by weight of a filler are kneaded with a kneader heated to 120 ° C., and then allowed to cool to room temperature. A sheet-like thermally foamable resin sheet (A) having a thickness of 1.5 mm was obtained. In addition, the following were used as a raw material.

[Manufacture of laminates]
(Laminate 1)
The inorganic fiber sheet (B1) on one side of the thermally foamable resin sheet (A) and the inorganic fiber sheet (C1) on the other side, so that [(B1) / (A) / (C1)] The laminate 1 was obtained by laminating using an acrylic adhesive.

(Laminate 2)
At the time of rolling the thermally foamable resin sheet (A), the inorganic fiber sheet (C1) is laminated, and the inorganic fiber sheet (C1) is provided on one surface of the sheet-like thermally foamable resin sheet (A) having a film thickness of 1.5 mm. A laminated body (P1) ([(C1) / (A)]) to which is bonded is obtained.
Next, the laminate (P1) and the inorganic fiber sheet (B1) were laminated using an acrylic adhesive so as to be [(B1) / (A) / (C1)] to obtain a laminate 2. .

(Laminate 3)
(A) so that it becomes [(C1) / (A) / (B1) / (A) / (C1)] using the laminate (P1) 2 sheets and the inorganic fiber sheet (B1) 1 sheet. The surface and the (B1) surface were laminated with an acrylic adhesive to obtain a laminate 3.

(Laminate 4)
(B1) so that it becomes [(B1) / (C1) / (A) / (A) / (C1)] by using the two laminates (P1) and one inorganic fiber sheet (B1). The surface, the (C1) surface, and the (A) surface were laminated with an acrylic adhesive to obtain a laminate 4.

(Laminate 5)
(B1) so that it becomes [(B1) / (C1) / (A) / (C1) / (A)] using the above laminate (P1) and two inorganic fiber sheets (B). The surface, the (C1) surface, and the (A) surface and the (C1) surface were laminated with an acrylic adhesive to obtain a laminate 5.

(Laminated body 6)
The laminate (P1) and the inorganic fiber sheet (B2) were laminated using an acrylic adhesive so as to be [(B2) / (A) / (C1)], whereby a laminate 6 was obtained.

(Laminate 7)
The laminate (P1) and the inorganic fiber sheet (B3) were laminated using an acrylic adhesive so as to be [(B3) / (A) / (C1)], whereby a laminate 7 was obtained.

(Laminated body 8)
The laminate (P1) and the inorganic fiber sheet (B4) were laminated using an acrylic adhesive so as to be [(B4) / (A) / (C1)], whereby a laminate 8 was obtained.

(Laminate 9)
The laminate (P1) and the inorganic fiber sheet (B5) were laminated using an acrylic adhesive so as to be [(B5) / (A) / (C1)], whereby a laminate 9 was obtained.

(Laminated body 10)
At the time of rolling the thermally foamable resin sheet (A), the inorganic fiber sheet (C2) is laminated, and the inorganic fiber sheet (C2) is formed on one surface of the sheet-like thermally foamable resin sheet (A) having a film thickness of 1.5 mm. A laminated body (P2) ([(C2) / (A)]) to which is bonded is obtained.
Next, the laminate (P2) and the inorganic fiber sheet (B1) were laminated using an acrylic adhesive so as to be [(B1) / (A) / (C2], whereby a laminate 10 was obtained.

(Laminate 11)
At the time of rolling the thermally foamable resin sheet (A), the inorganic fiber sheet (C3) is laminated, and the inorganic fiber sheet (C3) is formed on one surface of the sheet-like thermally foamable resin sheet (A) having a film thickness of 1.5 mm. A laminate (P3) ([(C3) / (A)]) was obtained by pressure bonding.
Next, the laminate (P3) and the inorganic fiber sheet (B1) were laminated using an acrylic adhesive so as to be [(B1) / (A) / (C3], whereby a laminate 11 was obtained.

(Laminated body 12)
At the time of rolling the thermally foamable resin sheet (A), the inorganic fiber sheet (C4) is laminated, and the inorganic fiber sheet (C4) is formed on one surface of the sheet-like thermally foamable resin sheet (A) having a film thickness of 1.5 mm. A laminate (P4) ([(C4) / (A)]) was obtained by pressure bonding.
Next, the laminate (P4) and the inorganic fiber sheet (B1) were laminated using an acrylic adhesive so as to be [(B1) / (A) / (C4], whereby a laminate 12 was obtained.

(Laminated body 13)
An inorganic / organic composite fiber sheet (C5) in which an inorganic fiber sheet (C4) and an organic fiber sheet were laminated in advance was obtained.
During the rolling of the heat-foamable resin sheet (A), the inorganic / organic composite fiber sheet (C5) is laminated so that the inorganic fibers are on the heat-foamable resin sheet (A) side. A laminate (P5) ([(C5) / (A)]) in which the inorganic / organic composite fiber sheet (C5) was pressure bonded to one surface of the thermally foamable resin sheet (A) was obtained.
Next, the laminate (P5) and the inorganic fiber sheet (B1) were laminated using an acrylic adhesive so as to be [(B1) / (A) / (C5], whereby a laminate 13 was obtained.

(Laminated body 14)
The inorganic fiber sheet (B1) was laminated on one surface of the thermally foamable resin sheet (A) using an acrylic adhesive to obtain a laminate 14 [(B1) / (A)].

(Laminate 15)
An inorganic fiber sheet (C1) was laminated on one surface of the thermally foamable resin sheet (A) using an acrylic adhesive to obtain a laminate 15 [(C1) / (A)].

(Laminated body 16)
The inorganic fiber sheet (C1) was laminated on both surfaces of the thermally foamable resin sheet (A) using an acrylic adhesive to obtain a laminate 16 [(C1) / (A) / (C1)].

(Laminate 17)
The inorganic fiber sheet (B1) was laminated on both surfaces of the thermally foamable resin sheet (A) using an acrylic adhesive to obtain a laminate 17 [(B1) / (A) / (B1)].

(Test Example 1)
(Heating test)
After the upper end of the obtained laminated body 1 was fixed to a steel material and suspended, it was used as a test body 1 and heated for a certain time (1 hour) according to the standard heating curve of ISO834, and the test body was cooled to room temperature. The shape of the test body was visually evaluated. As a result, a substantially uniform carbonized heat insulating layer was formed in the thermally foamable resin sheet portion, and excellent flame barrier properties and heat insulating properties were exhibited.

(Test Examples 2 to 17)
Test pieces 2 to 17 were produced in the same manner as in Test example 1 except that laminates 2 to 17 were used instead of the laminate 1 of Test example 1, and a heating test was performed (Test examples 2 to 17). ).

All of the test body 2 to the test body 13 formed a substantially uniform carbonized heat insulating layer in the thermally foamable sheet portion, and exhibited excellent flame barrier properties and heat insulating properties. Among the test bodies, the test body 4 showed much better flame barrier properties and heat insulation properties without any deviation or dropping of the carbonized heat insulation layer. On the other hand, in Test Example 14, the carbonized heat insulating layer dropped out and the heat insulating property could not be maintained. In Test Examples 15 and 16, the formation of the carbonized heat insulating layer was insufficient, and the thermally foamable sheet was dropped, and in Test Example 17, foaming of the thermally foamable sheet was insufficient.

Claims (3)

It is a laminate used to partition the space,
On one surface side of the thermally foamable resin sheet (A), an inorganic fiber sheet (B) having a basis weight of 100 g / m ² or more and 2000 g / m ² or less,
On the other side of the thermally foamable resin sheet (A), an inorganic fiber sheet (C) having a basis weight of less than 100 g / m ² ,
The laminated body characterized by the above-mentioned.   The laminate according to claim 1, wherein the inorganic fiber sheet (B) is a woven fabric. The laminate according to claim 1 or 2, wherein the inorganic fiber sheet (C) is a braided fabric and / or a nonwoven fabric.

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