JPH0420385B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a heat-resistant and flame-retardant film body,
To explain in more detail, it has excellent heat resistance and flame retardancy,
The present invention also relates to a fiber membrane having excellent sewing properties and bending resistance. [Prior art] In recent years, there has been a strong demand for synthetic resins used in building materials, interior materials, various items for vehicles, ships, aircraft, electrical appliances, etc. to be made flame-resistant and non-flammable, and this is required by law. Regulations on its use have also been strengthened. As one of the countermeasures, for example,
The publication discloses a noncombustible membrane in which a coating layer containing chlorosulfonated polyethylene as a main ingredient is formed on the surface of a glass fiber cloth. However, because chlorosulfonated polyethylene is expensive, this nonflammable membrane has not been put into practical use. In recent years, various types of heat-resistant and flame-retardant coatings using silicone resins or fluororesins as the main ingredient have been developed, but all of them are more expensive than the chlorosulfonated polyethylene mentioned above, and silicone resins are difficult to crosslink and coat. It takes a long time to form, and fluororesin has poor workability, making it difficult to use as a practical processing material. For the above reasons, it is preferable to use polyvinyl chloride resin, which is itself flame retardant and has versatile properties, as the main ingredient for the heat-resistant and flame-retardant coating.
Polyvinyl chloride resin, which is the most common coating material, has problems such as emitting a large amount of smoke when burned, making it difficult for people at the scene of the flames and firefighters to breathe, which can result in casualties. Therefore, it is a challenge to further improve the nonflammability of polyvinyl chloride resin and to further reduce smoke generation during combustion as much as possible. Japanese Patent Publication No. 55-4582 discloses that a composition obtained by adding one or more of borate, zinc compound, or iron compound, and aluminum hydroxide and/or barium sulfate to vinyl chloride resin is coated on a nonflammable base fabric. Discloses a noncombustible film body uniformly coated with This membrane hardly combusts even when a flame approaches, and even if it ignites, it emits almost no smoke.Furthermore, it can be widely used as a sheet-like material with the desired waterproofness and strength. It can be used for various purposes. However, since this membrane uses nonflammable glass fiber fabric as the base fabric, it has excellent nonflammability, but its weight (fabric weight) is large, making it inconvenient to use and handle, and it is difficult to sew. Also, due to the low bending resistance, there were problems such as easy breakage during use and easy tearing at perforations. Therefore, a heat-resistant and flame-retardant film body that maintains sufficient heat-resistant and flame-retardant properties for practical use, withstands strong vibrations, flapping, or repeated bending, is easy to sew, and does not tear from perforations. It is strongly desired that the [Problems to be solved by the invention] A heat-resistant and flame-retardant film body that has satisfactory heat-resistant and flame-retardant properties, is easy to sew, has good bending resistance, and is resistant to tearing from perforations. I will provide a. [Means and effects for solving the problems] The heat-resistant and flame-retardant film body of the present invention comprises a base fabric containing inorganic fibers and organic fibers, and a base fabric formed on at least one surface of the base fabric. , and has a heat-resistant and flame-retardant coating layer containing a vinyl chloride resin and a heat-resistant inorganic additive, and the weight ratio of inorganic fiber to organic fiber in the base fabric is 10:90 to 99.5: 0.5, and the inorganic additive contains an alkali titanate. The inorganic fibers used in the base fabric of the heat-resistant and flame-retardant membrane of the present invention can be selected from asbestos fibers, ceramic fibers, silica fibers, glass fibers, carbon fibers, and metal fibers. In addition, the organic fibers used for the base fabric are natural fibers,
For example, recycled fibers such as cotton, linen, etc., semi-synthetic fibers such as di- and tri-acetate fibers, etc., and synthetic fibers such as nylon 6, nylon 66, etc.
Polyester (polyethylene terephthalate, etc.)
The fibers can be selected from fibers such as aromatic polyamide fibers, acrylic fibers, polyvinyl chloride fibers, polyolefin fibers, and insoluble or hardly soluble polyvinyl alcohol fibers. The fibers in the base fabric may be in any form such as ordinary yarns, such as short fiber spun yarns, long fiber yarns, split yarns, tape yarns, and bulky yarns, and the base fabric may be woven, knitted, nonwoven, or Any of these composite fabrics may be used.
However, in consideration of the strength and bending resistance of the sewn portion, a woven or knitted fabric is preferable as the base fabric, and a woven fabric is more preferable. Further, as for the form of the fibers, it is preferable that the fibers are in the form of long fibers (filaments) that have little elongation under stress, and that they form a plain woven fabric. However, there are no particular limitations on the weaving structure or its form. organic fibers are
This is useful for maintaining the mechanical strength of the resulting heat-resistant and flame-retardant membrane at a high level. In addition, the elongation at break of the organic yarn is 10% or less, preferably 7% or less, and in order to balance the elongation performance of inorganic fibers and improve the utilization rate of breaking strength and increase the breaking strength. More preferred. When glass fiber is used, there are no particular limitations on its type or thickness, but generally it is about 2 to 2 mm thick.
Beta yarns of about 10 μm, especially about 3 μm, are used. There is no particular limitation on the form of mixture of inorganic fibers and organic fibers in the base fabric, and it may be any of blended yarn, blended woven and knitted fabric, blended twisted yarn, blended bulky yarn, or drawn yarn of different types of fiber threads. Alternatively, inorganic fibers and organic fibers may be woven or knitted separately and then used at any time to form the base fabric. In the heat-resistant and flame-retardant film body of the present invention, it is preferable that the organic fibers contained in the base fabric include heat-resistant organic synthetic fibers having a melting point of 300° C. or higher or a thermal decomposition point. Polymers that form such high melting point or high decomposition point fibers include those shown in Table 1.

【table】

【table】

【table】

[In the above formula, Ar ₁ and Ar ₂ represent divalent aromatic groups, which may be the same or different]

It is preferable that the main repeating unit is at least one type selected from the units shown in the following. In the above formulas () and (), the divalent aromatic groups represented by Ar ₁ and Ar ₂ are represented by the following formula,

【formula】

【formula】

【formula】

【formula】

【formula】

【formula】

【formula】

【formula】 and

[In the above formula, A represents -O-, -S-, -SO-, _-SO2- , -CO-, _-CH2- or -C( _CH3 ) _2- ]

Preferably, it is selected from the group of aromatic residues shown below. These aromatic residues halogen, alkyl groups,
It may also contain inert substituents such as nitro groups. Generally, the aromatic polyamide has the following formula: More preferred are those having the repeating unit represented by as a main component. The elongation at break of these heat-resistant organic synthetic fibers is generally 10% or less, and they also exhibit high strength. Therefore, high-strength membranes are required not only from the standpoint of heat resistance but also from the standpoint of improving the strength utilization rate of the membrane. It is extremely preferable to obtain In addition to the above, heat-resistant organic synthetic fibers include those with a melting point or decomposition point of 300℃ or higher,
Fluorine fibers and other fibers can also be used. The weight ratio of inorganic fiber to organic fiber in the base fabric of the present invention is within the range of 10:90 to 99.5:0.5. If the content of inorganic fibers is less than 10% by weight, the resulting membrane will have insufficient flame retardancy, and if the content of organic fibers is less than 0.5% by weight, the flexural strength of the resulting membrane will be insufficient. becomes. Further, it is preferable that the organic fiber contains at least 25% by weight of the heat-resistant organic synthetic fiber, more preferably the content is 30 to 100% by weight, and 50% by weight.
Even more preferably it is 100% by weight. Further, in order to promote adhesion between the base fabric and the heat-resistant and flame-retardant coating layer and other properties, the organic fibers may contain low heat-resistant fibers having a melting point or decomposition point lower than 300°C. In this case, there are no particular limitations on the low heat resistant fibers to be mixed. However, the mixing ratio of the low heat resistant fibers to be mixed is preferably 70% or less, more preferably 50% or less, based on the combined weight of the fibers in the base fabric. Mixing ratio of inorganic fiber and organic fiber is 99.5:0.5~
When the ratio is within the range of 70:30, the flame retardance of the resulting membrane is significantly superior. The organic fibers are preferably selected from heat-resistant organic synthetic fibers, but are not limited thereto. When the mixing weight ratio of inorganic fibers and organic fibers is in the range of 70:30 to 10:90, the resulting membrane has good flame retardancy, and when the weight ratio is in the range of 50:50 to 10:90. Therefore, when the mixing ratio of organic fibers increases, it is preferable to use heat-resistant organic synthetic fibers as the organic fibers and increase the ratio of the amount used. If it is small, it is more preferable that 100% of the organic fibers be heat-resistant organic synthetic fibers. The heat-resistant and flame-retardant coating layer may be formed by blending the compounding agents described later with the polyvinyl chloride resin. In the present invention, the polyvinyl chloride resin used to form the heat-resistant and flame-retardant coating layer is, for example,
Vinyl chloride homopolymers, vinyl chloride copolymers, vinyl chloride-vinyl acetate copolymers, vinyl chloride-ethylene copolymers, and copolymers obtained by grafting vinyl chloride onto vinyl chloride-ethylene-vinyl acetate copolymers. Examples include polymers. The vinyl chloride resin applied to the present invention includes, for example, smoke reducing agents such as borates and zinc compounds, and flame retardants such as aluminum hydroxide, barium sulfate, and antimony trioxide, as well as commonly used plasticizers, Stabilizers, flame retardants, fillers, pigments and other additives may also be added. Borates used in smoke reducing agents include calcium borate, magnesium borate, barium borate, etc., zinc compounds include zinc oxide, zinc carbonate, etc., and iron compounds include ferrous oxalate. , ferrous fumarate, black iron oxide, etc. are suitable. Examples of plasticizers include phthalic acid esters such as dioctyl phthalate, diisodecyl phthalate and dibutyl phthalate, aliphatic dibasic acid esters such as dioctyl adipate and dioctyl sebacate, or epoxidized soybean oil and epoxidized linseed oil. A plasticizer or the like is used. In addition, flame retardants include chlorinated paraffin, aliphatic,
Cycloaliphatic or aromatic halogen compounds, tricresyl phosphate, tris-2,3-dibromopropyl phosphate, tris-2,3-dichloropropyl phosphate, etc. are used as fillers. , calcium carbonate, silica, aluminum silicate, etc. are suitable. The vinyl chloride resin composition to be applied to the base fabric is preferably a paste, a film, etc., and the paste is prepared by diluting the resin composition with a nonflammable organic solvent and impregnating it, or applying it by knife coating, roll coating, etc. However, the film is mainly applied using a calendar machine. Normally, after impregnating and applying paste and fixing it, a film is attached to one or both sides of the base fabric, and the total amount of resin applied to the base fabric is regulated to 100 to 300 g/m ² . The paste is uniformly impregnated or applied to the base fabric, and after completely permeating into the yarn, it is dried at about 100°C to 150°C for about 1 to 5 minutes, and then heat-treated in a high temperature atmosphere of 150°C to 200°C. and gelatinized. Further, the same resin composition film is usually attached to one or both sides of the base fabric. Film is 0.04~0.20
It has a uniform thickness of about mm, and is attached to the base fabric by heating and pressurizing it using a calendar machine. The weight of the resin composition fixed to the entire base fabric is preferably in the range of 100 to 300 g/m ² . Below 100g/ ^m2 ,
It is difficult to completely cover the base fabric, and
If it exceeds g/m ² , there is a danger that the resin content will be excessive with respect to the base fabric, resulting in smoke generation and an increase in calorific value during combustion. The heat-resistant and flame-retardant film obtained in this way has low smoke emission and calorific value during combustion, and meets JIS-A-1322.
(1975), the smoke emission coefficient is 120 or less, some are 60 or less, and some are 30 or less in the surface test according to the "Flame Retardant Test Method for Building Interior Materials and Construction Methods". Further, since the base fabric is uniformly covered with a continuous film, a film body that can withstand water pressure of at least 1500 mm of water column and has appropriate strength and good heat resistance and flame retardancy can be obtained. The flame retardant property determination and waterproof test of the membrane body according to the present invention are conducted as follows. (a) Flame retardancy determination Base material test and surface test are conducted based on the flame retardancy test method shown in JIS-A-1321 (1975). (Enforcement Ordinance of the Building Standards Act, semi-flammable, flame retardant, surface test, Ministry of Construction Public Notice No. 3415). The specimen in the surface test has no melting, cracking, deformation, or generation of toxic gas, afterflame time is less than 30 seconds, exhaust temperature curve does not exceed the standard temperature curve, and smoke emission coefficient (CA) per unit area. It was judged. (b) Waterproofing JIS-L-1079 Chemical Fiber Fabric Test Method
Using method 5.24.1.A, the water level (mm) was measured when water droplets came out from three locations on the back side of the test piece. The heat-resistant and flame-retardant coating layer is formed from the above-mentioned polyvinyl chloride resin and a heat-resistant inorganic additive, and the heat-resistant and flame-retardant coating layer preferably accounts for 1 to 300%, more preferably 1 to 300%, based on the weight of the polyvinyl chloride resin. 10~250
% of inorganic additives, such as silica-based additives, alkali titanate-based additives, asbestos fibers, mica and other inorganic heat-resistant materials, high refractive index inorganic compounds, or
It may also contain an endothermic inorganic compound or the like. Inorganic additives serve to reinforce the polyvinyl chloride layer, and include alkali titanate, as well as other inorganic additives such as titanium oxide, mica,
It may contain various inorganic substances such as alumina, talc, glass fiber powder, rock wool fine fibers, silica powder, and clay. When it is desired to impart surface smoothness to the resulting sheet, inorganic additives are generally used so as not to impair the surface smoothness of the sheet.
It is preferable to use a fine powder with a diameter of 50 μm or less. Alkali titanate is used by being blended with polyvinyl chloride fat, and is used to ensure that the membrane of the present invention maintains sufficient flame retardant properties. The alkali titanate will be explained in more detail. Alkali titanate has the general formula M ₂ O・nTiO ₂・
mH ₂ O (in the formula, M represents an alkali metal such as Li, Ma, K, etc., n represents a positive real number of 8 or less, m is 0
Or represents a positive real number less than or equal to 1. ), and more specifically, an alkali titanate with a salt-type structure represented by LiTiO ₄ Li ₂ TiO ₃ (0<n<1, m=0), Na ₂ Ti ₇ O ₁₆ , K ₂ Ti ₆ O ₁₅ , K ₂ Ti ₈ O ₁₇ (0<8, m=
0) with a tunnel structure, such as alkali titanate. Among these, potassium hexatitanate and its hydrate represented by the general formula K ₂ O・6TiO ₂ mH ₂ O (in the formula, m is the same as above) are:
This is suitable because it greatly improves the fire resistance and heat insulation properties of the final object. Not only potassium hexatitanate but also alkali titanates are generally in the form of powder or fibrous microcrystals, but among these, those with a fiber length of 5 μm or more
An aspect ratio of 20 or more, especially 100 or more brings about favorable results in improving the strength of the heat-resistant sheet of the present invention. In addition, fibrous potassium titanate has a high specific heat and excellent heat insulation performance, and is particularly preferable for realizing the performance of the heat-resistant and flame-retardant membrane of the present invention. The alkali titanate described above can be used as is, but in order to achieve a better reinforcing effect, it is necessary to add a silane coupling agent, such as a silane coupling agent, in an amount of about 0.05 to 1.0% by weight based on potassium titanate. It is preferable to use fibers whose surfaces have been treated with a silane coupling agent such as γ-aminopropyltriethoxysilane or γ-glycidoxypropyrotrimethoxysilane. Furthermore, the heat-resistant and flame-retardant coating layer of the present invention may contain a high refractive index inorganic compound or an endothermic inorganic compound. High refractive index inorganic compounds have excellent shielding performance against radiant heat, and when endothermic inorganic compounds come into direct contact with slag during welding or fusing, they are heated at this contact surface, and an endothermic reaction occurs during decomposition, lowering the temperature of the slag. lower. Therefore, the above-mentioned inorganic compound can suppress the collapse or penetration failure of the coating layer of the present invention, and can further protect the membrane base material. High refractive index inorganic compounds useful in the present invention have a refractive index of
Any material with a specific gravity of 1.5 or more is acceptable, but those with a specific gravity of 2.8 or more are particularly preferred, and examples thereof include the following. (1) Dolomite (dolomite) specific gravity 2.8-2.9, refractive index 1.50-1.68 Magnesite (rhizoite) 〃3.0-3.1, 〃 1.51-1.72 Aragonite − 〃2.9-3.0, 〃 1.63-1.68 Apatite (apatite) 3.1-3.2, 1.68-1.64 Spinel 3.5-3.6, 1.72-1.73 Corundum − Specific gravity 3.9-4.0, 1.76-1.77 Zircon − 3.90-4.10, Refractive index 1.79-1.81 Silicon carbide − Powder of crushed natural or synthetic minerals such as 〃3.17~3.19, 〃1.65~2.68. (2) Fine powders or granules of frits or high refractive glasses or fused phosphorous or other similar solid solutions obtained as solid solutions of phosphate and snakestone;
Fibrous materials or foams, etc. In addition, endothermic inorganic compounds include calcined gypsum, alum, calcium carbonate, aluminum hydroxide, hydrosalcite-based aluminum silicate, etc., crystal water release type, carbon dioxide release type, decomposition endothermic type, and phase change type. Examples include type inorganic compounds. By mixing and dispersing the alkali titanate and optionally the high refractive index inorganic compound and/or the endothermic inorganic compound in the polyvinyl chloride resin, a preferred coating mixture for the membrane structure according to the invention is obtained. All known means can be used to adjust the mixing and dispersion. In addition, the above coating mixture contains dispersants and defoaming agents to homogeneously disperse each component, colorants to adjust color and mechanical strength, resin powder, flame retardants, metal powder, etc. Various fillers can be freely mixed. In addition, copper powder, nickel powder,
Mixing metal powder such as brass powder or aluminum powder is preferable from the viewpoint of improving the surface heat reflection effect and the penetration suppressing effect. The surface of the base fabric can be coated with a heat-resistant and flame-retardant film layer by applying the coating mixture to the surface of the base fabric by spraying, brushing, roll coating, etc., or by molding the coating mixture. There is a method in which a coated film is adhered to the surface of a base fabric, or a method in which the base fabric is immersed in a coating mixture to be impregnated. The blending ratio of polyvinyl chloride resin, alkali titanate, high refractive index inorganic compound, and/or endothermic inorganic compound, etc. varies depending on the type and particle size of the polyvinyl chloride resin and inorganic compound used, but in general, alkali titanate and When the content of the high refractive index inorganic compound and/or the endothermic inorganic compound increases, the heat resistance and flame retardance of the resulting coating layer improves. However, if the content of polyvinyl chloride resin is too low, the strength of the coating layer will be insufficient, resulting in cracks in the coating layer or peeling of the coating layer from the base fabric when used as a heat-resistant and flame-retardant membrane. Such disadvantages arise. Therefore, in the present invention, the amount of alkali titanate blended with respect to 100 parts by weight of polyvinyl chloride resin (hereinafter referred to as parts by weight) is preferably 1 to 200 parts, and 30 to 100 parts. It is more preferable that there be. Furthermore, if high refractive index inorganic compounds and/or endothermic inorganic compounds are added to these,
Up to 400 parts can be added by replacing it with an alkali titanate corresponding to the same weight to 1/4 of the weight, but a range of 10 to 300 parts is usually preferred. Note that part or all of these high refractive index inorganic compounds and endothermic inorganic compounds can be replaced with commonly used inorganic pigments, inorganic extender fillers, inorganic powders that impart flame retardancy, etc. The amount used is preferably 400 parts or less, more preferably 300 parts or less per 100 parts of polyvinyl chloride resin. A flame retardant may be used in combination to enhance the effects of the present invention. The flame retardants used here are not particularly limited, but include, for example, phosphate ester type, organic halogen compound type,
Organic flame retardants such as phosphazene compound type, crystal water releasing type such as calcined gypsum, alum, calcium carbonate, aluminum hydroxide, hydrotalcite aluminum silicate, carbon dioxide gas releasing type, decomposition endothermic type and phase conversion type. There are inorganic flame retardants such as endothermic decomposition type inorganic compounds made of inorganic compounds and antimony compounds. In order to improve the adhesion and durability between the base fabric and the coating layer, an adhesive substance may be interposed between the two. In this case, there is no need to interpose the layer thicker than to improve adhesive strength. Adhesive substances are not used for film formation; therefore substances known as adhesives can be used. for example,
Acrylates containing amino groups, imino groups, ethyleneimine residues, alkylene diamine residues, acrylates containing aziridinyl groups, amino ester-modified vinyl polymers - aromatic epoxy adhesives, amino nitrogen-containing methacrylate polymers, other adhesives may be used together. Also polyamideimide,
It is also possible to arbitrarily select a resin of the same quality as the resin constituting the fiber base fabric, such as polyimide, or an RFL modified substance. There are no particular limitations on the weight or thickness of the coating layer, but
Generally 10-1000g/ ^m2 , preferably 50-300g/m2
A weight of m ² is preferred. In the heat-resistant and flame-retardant film body of the present invention, the heat-resistant and flame-retardant coating layer may be formed only on one side, but may be formed on both sides to compensate for the low weather resistance of the base fabric. Depending on the situation, double-sided formation may be an essential condition. Depending on the performance required for the membrane, the other side may be made of natural rubber, neoprene rubber, chloroprene rubber, silicone rubber, fluorine rubber, Hypalon or other synthetic rubber, ethylene-vinyl acetate copolymer (EVA) resin, acrylic Resin, silicone resin, fluororesin, urethane resin, polyester resin and other synthetic resins can also be used. In this case, these resins need to be flame retardant. The heat-resistant and flame-retardant film body of the present invention may be formed into a tape shape or a strip shape, or a wide film body may be cut into a tape shape or a strip shape. Furthermore, the heat-resistant and flame-retardant film of the present invention may be used in combination with other materials, such as foam, mat, or net. The heat-resistant and flame-retardant membrane of the present invention may be coated or wrapped around a material to be protected, such as an electric wire. [Example] The heat-resistant and flame-retardant film body of the present invention will be further explained with reference to Examples. Examples 1 to 5 and Comparative Examples 1 to 2 In the comparative examples, fabrics with the following structures were used as base fabrics. Fabric of Comparative Example 1 Fabric A: Glass fiber used DE1501/23.3S/54 pieces/25.4mm x 51 pieces/25.4mm Turkish satin woven fabric Fabric of Comparative Example 2 Fabric B: Polyester spun yarn plain woven fabric 20S/1 x 20S/1 /92×55 Fabric of Example 1 (Fabric 1): In the glass fiber fabric of Fabric A, 1 in 25.4 mm
The glass fiber yarn was replaced with a polyester filament 1000d/148f yarn in a proportion of 100%. Fabric of Example 2 (Fabric 2): A fabric was prepared by arranging the structure of Fabric A in the order of 10 glass fiber threads and 1 polyester thread. Fabric of Example 3 (Fabric 3): In the structure of Fabric A, 2 glass fiber threads/
1 polyester thread / 2 glass fiber threads / Aromatic polyamide fiber (Kevlar) thread (1000d/
148f) They were lined up one by one and made into cloth. Fabric of Example 4 (Fabric 4): In the structure of Fabric A, glass fiber threads and Kevlar threads were arranged alternately. Fabric of Example 5 (Fabric 5): In the structure of Fabric A, two glass fiber threads and eight Kevlar threads were arranged in this order. Each of the above base fabrics was treated with the following resin composition. Ingredients Part by weight PVC [Immersion method: paste method Calendar method: straight method] 100 DOP (plasticizer) 70 Barium borate (smoke reducer) 20 Potassium titanate (flame retardant) 70 Aluminum hydroxide (flame retardant) 100 Sulfuric acid Barium (flame retardant) 200 Ba-Zn stabilizer 2 Cyanine blue (pigment) 3 (Note: Teismo D (trademark) manufactured by Otsuka Chemical Co., Ltd. was used as potassium titanate.) Paste of the above resin composition Dilute with trichloride, impregnate and coat the base fabric with this diluted solution by dipping method,
After drying at 150°C for 2 minutes to scatter the diluent, heat treatment at 185°C for 1 minute to spread the resin onto the base fabric.
It was fixed at a rate of 70 g/m ² . Next, a film made of the same resin composition as above was created using a calendar using straight PVC, and this was attached to one side of the resin-impregnated fixed base fabric, so that the total amount of resin retained on the base fabric was 200 g/m ² And so. Table 2 shows the results of evaluating the performance of the various membrane bodies obtained.

【table】

【table】

〔Effect of the invention〕

The heat-resistant and flame-retardant film body according to the present invention exhibits good heat-resistant and flame-retardant properties, is lightweight and strong, and has excellent resistance to repeated folding and sewing properties, especially tearing of perforations at seams. It is also excellent in preventing breakage. Therefore, the heat-resistant and flame-retardant film body of the present invention can be used in fire-resistant clothing, building materials for gymnasiums, warehouses, markets, playgrounds, factories, parking lots, various accommodation facilities, etc. where fire is expected.
It is suitable for interior materials, as well as for materials such as tents, awnings, blinds, sheets, partitions, and other applications that are subject to severe bending, vibration, flapping, etc.

Claims (1)

[Scope of Claims] 1. A base fabric comprising inorganic fibers and organic fibers, and a base fabric formed on at least one surface of the base fabric, and containing a polyvinyl chloride resin and a heat-resistant inorganic additive. a heat-resistant and flame-retardant coating layer, the weight ratio of inorganic fibers to organic fibers in the base fabric is within the range of 10:90 to 99.5:0.5, and the inorganic additive contains an alkali titanate. , A heat-resistant and flame-retardant membrane body characterized by: 2 The inorganic fiber is asbestos fiber, ceramic fiber,
The membrane body according to claim 1, which is selected from silica fibers, glass fibers, carbon fibers and metal fibers. 3. The membrane body according to claim 1, wherein the organic fiber includes a heat-resistant organic synthetic fiber having a melting point of 300° C. or higher or a thermal decomposition point. 4. The membrane of claim 3, wherein the organic fibers contain at least 25% by weight of the heat-resistant organic synthetic fibers. 5 The content rate of the inorganic additive in the heat-resistant and flame-retardant coating layer is 1 to 300% based on the weight of the polyvinyl chloride resin.
%, the membrane body according to claim 1. 6. The membrane body according to claim 1, wherein the alkali titanate is selected from potassium hexatitanate and hydrates thereof. 7. The membrane body according to claim 1, wherein the content of the alkali titanate in the heat-resistant and flame-retardant coating layer is within the range of 1 to 200% based on the weight of the polyvinyl chloride resin. 8. The film body according to claim 1, wherein the heat-resistant and flame-retardant coating layer further contains a high refractive index inorganic compound or an endothermic inorganic compound.