JP3174010U - Laminated body - Google Patents

Abstract

The present invention provides a laminate having a sufficient heat-resistant protective property and an excellent design property with an aesthetic appearance due to a wood texture.
A laminated body is formed by laminating a thermal expansion layer 3 on a substrate 1, and further laminating a decorative layer 4 on the surface of the thermal expansion layer. The thermal expansion layer includes a thermoplastic resin, a flame retardant, a foaming agent, a carbonizing agent, and a filler, and the decorative layer is a single plate having a thickness of 0.01 to 3 mm.
[Selection] Figure 1

Description

The present invention relates to a novel laminate.

When a structure such as a building or a civil engineering structure is exposed to a high temperature due to a fire or the like, there is a problem that the physical strength of the base material constituting the structure rapidly decreases. In particular, when the base material is wood, the wood easily burns. For this reason, it is necessary to ensure the heat resistance of wood and prevent or delay combustion. On the other hand, various methods have been proposed, such as (a) a method of applying or impregnating an inorganic flame retardant liquid agent, and (b) a method of covering a material that is foamed and insulated by heat in a fire. ing.

  As the method (a), for example, Patent Document 1 describes that wood is impregnated with a solution containing an alkyl silicate compound, and the alkyl silicate compound is cured in wood to be polymerized. Moreover, as a method of (b) above, for example, Patent Document 2 describes that a layer made of a foamable fire-resistant paint and a fiber fabric is laminated on the surface of wood.

Japanese Patent Laid-Open No. 3-30907 JP-A-4-175152

However, as in Patent Document 1, when a flame retardant liquid is impregnated in wood, a certain degree of fire-proof performance can be obtained while maintaining the texture of the wood, but performance sufficient to withstand at high temperatures is imparted. It ’s difficult. On the other hand, when the layer which consists of a foamable fire-proof paint like patent document 2 is laminated | stacked, although excellent heat resistance can be exhibited, since the wood surface is covered, the texture of wood will be impaired.

The present invention has been made in order to solve the above-mentioned problems, and provides a laminate having a sufficient heat-resistant protective property and a design having an excellent aesthetic appearance due to a wood texture. The present invention has the following features.
1. A laminate in which a thermal expansion layer is laminated on a base material, and a decorative layer is further laminated on the surface of the thermal expansion layer,
The thermal expansion layer includes a thermoplastic resin, a flame retardant, a foaming agent, a carbonizing agent and a filler;
The laminate, wherein the decorative layer is a single plate having a thickness of 0.01 to 3 mm.
2. The thermal expansion layer has an uneven pattern on the surface. The laminated body as described in.
3. The base material is a wooden member. Or 2. The laminated body in any one of.

The laminate of the present invention has a sufficient heat resistance protection and has a design that is excellent in aesthetics due to the wood texture. Specifically, the following effects can be obtained.

Above 1. According to the laminate, by laminating a single plate having a specific thickness as a thermal expansion layer and a decorative layer on the base material, it has a design that is excellent in aesthetics due to the wood texture, and is heated by a fire or the like. When exposed to heat, the entire substrate can be protected against heat.

2. According to this laminate, in addition to the above effects, the wood texture can be further enhanced.

3. above. According to the laminate of the present invention, even when the base material is a wooden member, it has excellent design properties, and when it is exposed to high temperatures due to a fire or the like, it can exhibit heat resistance protection on the whole base material. it can.

FIG. 1 is a view showing an example of a cross-sectional view of the laminate of the present invention. FIG. 2 is a view showing another example of a cross-sectional view of the laminate of the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described in detail.

In the laminate of the present invention, a thermal expansion layer is laminated on a base material, and a decorative layer is further laminated on the thermal expansion layer.

An example of the laminated body of this invention is shown in FIGS.
In FIG. 1, a thermal expansion layer 3 and a decorative layer 4 are sequentially provided on the base material 1.

  The base material 1 of the present invention corresponds to a part that requires heat protection in a structure such as a building or a civil engineering structure, for example, each part such as a wall, a pillar, a floor, a beam, a ceiling, and a staircase. In particular, the laminate of the present invention is effective when applied to parts such as columns, floors, beams, walls, etc., where design is required. Such a part may be any member made of a steel material, concrete, a wooden member, a resin member, or the like. Specifically, an H column, a round column, a prism, a folded plate, a deck plate, and the like can be given.

  In particular, the present invention can exhibit sufficient heat protection even when the substrate 1 is a wood member. Moreover, the designability which has the wood texture like a base material can be provided by laminating | stacking the below-mentioned decorative layer.

The thermal expansion layer 3 of the present invention foams when the ambient temperature reaches a predetermined foaming temperature due to a fire or the like, and forms a carbonized heat insulating layer. As the thermal expansion layer 3, one containing a thermoplastic resin, a flame retardant, a foaming agent, a carbonizing agent and a filler as a constituent component is suitable.

Among these, examples of the thermoplastic resin include acrylic resin, acrylic / styrene copolymer resin, epoxy resin, urethane resin, polyester resin, polybutadiene resin, alkyd resin, polyvinyl chloride, polyethylene, vinyl acetate resin, vinyl acetate / acrylic copolymer. Polymerized resin, ethylene / vinyl acetate synthetic resin, vinyl acetate / versaic acid vinyl ester copolymer resin, vinyl acetate / versaic acid vinyl ester / acrylic copolymer resin, vinyl toluene / butadiene copolymer resin, vinyl toluene / acrylic acid ester copolymer Resin, vinyl toluene-methacrylic acid ester copolymer resin, styrene / butadiene copolymer resin, ethylene / methacrylic acid ester copolymer resin, or two monomers constituting these copolymer resins and acrylic acid monomer, Resins such as terpolymers of acrylic acid monomers. These thermoplastic resins can be used alone or in combination of two or more.

The flame retardant exhibits at least one effect such as a dehydration cooling effect, an incombustible gas generation effect, and a carbonization promoting effect in a fire, and prevents or suppresses resin combustion. Examples of flame retardants include chlorine compounds such as chlorinated polyphenyl, chlorinated polyethylene, diphenyl chloride, triphenyl chloride, pentachloride fatty acid ester, perchloropentacyclodecane, chlorinated naphthalene, and tetrachlorophthalic anhydride; antimony trioxide Antimony compounds such as antimony pentachloride; phosphorus compounds such as tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, phosphorus trichloride, phosphorus pentachloride, ammonium phosphate, ammonium polyphosphate; other zinc borate, Examples include inorganic compounds such as sodium borate.

The foaming agent produces an incombustible gas in the event of a fire, foams a carbonizing binder and the following carbonizing agent, and exhibits an effect of forming a carbonized heat insulating layer containing pores. Examples of the foaming agent include melamine and derivatives thereof, dicyandiamide and derivatives thereof, azodicarbonamide, urea and thiourea.

The carbonizing agent exhibits the effect of forming a thick carbonized heat insulating layer with excellent heat insulating properties by dehydrating and carbonizing itself with the carbonization of the resin due to a fire. Examples of the carbonizing agent include polyhydric alcohols such as pentaerythritol, dipentaerythritol, and trimethylolpropane; starch, casein and the like.

A filler exhibits the effect which improves the intensity | strength of a carbonization heat insulation layer and improves heat-resistant protection. Examples of the filler include silicates such as talc; carbonates such as calcium carbonate and sodium carbonate; metal oxides such as aluminum oxide, titanium dioxide, and zinc oxide; natural minerals such as clay, clay, shirasu, and mica. Is mentioned.

The ratio of each component constituting the thermal expansion layer is about 200 to 600 parts by weight of the flame retardant, about 40 to 150 parts by weight of the foaming agent, and about 40 to 150 parts by weight of the carbonizing agent with respect to 100 parts by weight of the thermoplastic resin. The filler may be about 50 to 160 parts by weight.

As a component constituting the thermal expansion layer 3, a colorant can be further used. As the colorant, known color pigments, color dyes, and the like can be used. In addition to the above components, for example, reinforcing fibers, plasticizers, and the like can be used as appropriate.

Such a thermal expansion layer 3 can be produced by molding a mixture of the above-described components by a known method. Examples of the shape of the thermal expansion layer 3 include a sheet shape and a board shape. In the present invention, a sheet-like thermal expansion sheet is preferable. Moreover, such a thermal expansion layer 3 may have a well-known organic or inorganic woven fabric, a nonwoven fabric, a fiber sheet, such as a mesh sheet, or a composite fiber sheet. The thermal expansion layer 3 can also be formed by applying a mixture of the above components to a substrate and drying. The thickness of the thermal expansion layer 3 may be set as appropriate, but is usually about 0.2 to 10 mm, preferably about 0.5 to 6 mm.

The thermal expansion layer 3 can be laminated on the base material via the adhesive 2 as required (FIG. 2). As the adhesive 2, a known adhesive or a commercially available product can be used. For example, a vinyl acetate adhesive, a urethane adhesive, an epoxy adhesive, an acrylic adhesive, a synthetic rubber adhesive, a fiber base adhesive, and the like. Etc. can be used.

  The decorative layer 4 of the present invention is a single plate having a thickness of 0.01 to 3 mm (preferably 0.05 to 1 mm), and such a single plate is laminated on the surface of the thermal expansion layer 3. A laminate excellent in wood texture can be obtained. Moreover, since the thickness of the decorative layer 4 is as thin as the said range, the foaming of the said thermal expansion layer 3 is not inhibited. This veneer is also called a veneer, a nail plate, or a sliced wood. In the present invention, either a wood veneer or an artificial veneer can be used.

Veneer tree species are not particularly limited. , Rosewood, beech, cherry, hard maple, sycamore, parseye maple, black ash, quince, red aim, octane, etc., but various other tree species can be used. The wood grain pattern may be any one of a grain pattern, a square pattern, and a square pattern. The veneer may be treated with a flame retardant.

  The decorative layer 4 is preferably laminated on the thermal expansion layer 3 via a known adhesive. In addition, the thermal expansion layer 3 and the decorative layer 4 may be sequentially stacked when the laminate of the present invention is formed, but may be a composite layer 5 in which the decorative layer 4 is previously stacked on the thermal expansion layer 3. it can.

The method of forming the laminate of the present invention is not particularly limited as long as the thermal expansion layer 3 is laminated on the base material 1 and the decorative layer 4 is further laminated on the thermal expansion layer 3. It can be formed by the following method.
(1) The adhesive material 2 is applied to the base material 1, and the thermal expansion layer 3 is laminated. Next, a method of applying the adhesive material 2 on the thermal expansion layer 3 and laminating the decorative layer 4.
(2) A method of applying the adhesive 2 to the substrate 1 and laminating the composite layer 5.

  Specific examples are shown below.

<Preparation of thermal expansion layer>
(Thermal expansion sheet 1)
A pressure kneader in which a mixture containing 100 parts by weight of vinyl acetate / ethylene copolymer resin, 60 parts by weight of melamine, 60 parts by weight of dipentaerythritol, 300 parts by weight of ammonium polyphosphate, and 75 parts by weight of titanium oxide is set at a temperature of 120 ° C. The kneaded material for the thermal expansion layer was prepared by kneading with the above, and the kneaded material was laminated on the glass nonwoven fabric and processed into a sheet shape by a rolling roller to prepare a thermal expansion sheet 1 (450 mm × 1200 mm) having a film thickness of 1.5 mm. . (The thermally expandable sheet 1 is used after being cut into an arbitrary size.)

<Manufacture of laminates>
(Laminate 1)
An acrylic adhesive was applied with a thickness of 50 μm to a base material (wood: 450 mm × 450 mm × 15 mm), and a thermal expansion sheet 1 (450 mm × 450 mm) was laminated. Next, an acrylic adhesive is applied to the thermal expansion sheet 1 with a thickness of 50 μm, and a single plate (cypress, plate pattern, thickness 0.3 mm) is laminated, and the temperature is 20 ° C. and the relative humidity is 65% lower. And dried to obtain a laminate 1. The laminate 1 has a design that is excellent in wood texture.

(Heating test)
After injecting a flame for 10 minutes with the gas burner to the decorative layer (single board) side of the obtained laminated body, each expansibility was confirmed.
Laminate 1 had excellent expandability and was able to form a uniform carbonized layer.

1. Base material 2. 2. Adhesive material 3. Thermal expansion layer Cosmetic layer5. Composite layer

Claims (3)

A laminate in which a thermal expansion layer is laminated on a base material, and a decorative layer is further laminated on the surface of the thermal expansion layer,
The thermal expansion layer includes a thermoplastic resin, a flame retardant, a foaming agent, a carbonizing agent and a filler;
The laminate, wherein the decorative layer is a single plate having a thickness of 0.01 to 3 mm.   The laminate according to claim 1, wherein the thermal expansion layer has an uneven pattern on a surface. The laminate according to claim 1, wherein the base material is a wooden member.

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