JPS60244546A - Incombustible sheet material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Main job is Joza■■Ko! The present invention relates to a sheet material that is nonflammable or highly flame retardant, and has excellent stain resistance and weather resistance.

BACKGROUND OF THE INVENTION In recent years, sheet materials containing various synthetic resins have been used as building materials, interior materials, and components for vehicles, ships, aircraft, and the like. These synthetic resins have the disadvantage of generating a large amount of noxious or toxic gas or smoke when burned in a fire or the like. For example, a large amount of sheet materials containing polyvinyl chloride resin are used as the above-mentioned sheet materials, and various proposals have been made to make such sheet materials nonflammable or flame retardant.

For example, Japanese Patent Publication No. 55-4582 proposes adding a borate, a zinc compound, or an iron compound, and aluminum hydroxide or barium sulfate to the polyvinyl chloride resin to be applied to the base fabric of the sheet material. However, the results are still not fully satisfactory.

Japanese Patent Publications No. 53-13505, Japanese Patent Publication No. 51-37397, and Japanese Unexamined Patent Publication No. 54-68470 propose the use of silicone resin as the nonflammable resin. In these cases, the effect of nonflammability or n-fuel ratio is quite high, but when sheet materials coated with such silicone resins are used outdoors, for example as tent sheets, they become extremely dirty during use. Easy,
Moreover, since the surface of this silicone resin coating layer is soft and brittle, there is a drawback that various solid dust powders may penetrate into the silicone resin coating layer and become buried therein, or the coating layer may be peeled off.

Therefore, there has been a strong desire in the art to solve the above-mentioned drawbacks of non-flammable or flame-retardant coating layers.

Conventionally, coating layers containing silicone resin or silicone rubber have been formed to make sheet materials nonflammable or flame retardant, but there are drawbacks to these coating layers, namely: It is necessary to overcome the disadvantages of being easily stained, soft, and easily peeled off.

for speaking The above problems are solved by the sheet material of the present invention.

That is, the nonflammable sheet material of the present invention includes a nonflammable base fabric made of a nonflammable fiber fabric, a nonflammable base fabric coated on at least one surface, and a nonflammable or H-flammable silicone resin and silicone. A non-flammable coating layer formed from a coating material containing at least one type selected from rubber, and a thermoplastic material that coats at least one of the non-flammable coating layers and has excellent stain resistance and weather resistance. Made from synthetic resin material, antifouling and
and a weather-resistant coating layer.

The non-combustible base fabric used in the sheet material of the present invention is made of non-combustible fiber fabric, and examples of such fabric include glass fiber and asbestos fiber.

A knitted fabric or nonwoven fabric made of metal fibers and/or other inorganic nonflammable fibers can be used.

As a base fabric, adhesiveness with the coating layer, flexibility,
In order to improve water resistance, etc., it is preferable that the weight loss by incineration is 5% or less, the cross cover factor is 25 to 35, and the weight is 50 kg/25 fins or more, especially 200 kg/25 fins or more.
Longitudinal tensile strength of 25 inches or more, and 100
Those having a basis weight of at least 200 to 900 g/nf, particularly glass fibers, are preferred.

The silicone resin and silicone rubber used to form the nonflammable or flame-retardant coating layer in the present invention include, for example, organopolysiloxane, poly(silorganylenesiloxane), polysilthian, polysilazane, silicon-containing side chain It can be made from carbon polymers, polysilanes, etc. with For example, Shin-Etsu Chemical's flame-retardant silicone resins XR166, KR168, KR202,
KR203B, KR-101-10, and the like can be used in the present invention.

The non-combustible or flame-retardant fjt layer may be formed only from the silicone resin and/or silicone rubber as described above, but these materials contain 30% by weight based on their weight.
~300%, preferably 100-250% of other fillers, such as silica-based fillers, potassium titanate-based fillers,
It may also be a mixture of asbestos, mica, and other inorganic heat-resistant materials.

There is no particular limitation on the weight or thickness of the non-flammable or flame-retardant coating layer, but it generally has a weight of 10 to 1000 g/rn', preferably 50 to 700 g/rrr, and a weight of 10 g/rn' on one side.
Preferably, it is formed with a thickness of ~500 microns.

As the antifouling and weather-resistant synthetic resin used in the present invention, fluorine-containing resins and acrylic resins can be used.

That is, the antifouling/weather-resistant coating layer is generally formed by adhering a film made of a fluorine-containing resin or an acrylic resin onto a desired nonflammable coating layer.

In general, fluorine-containing resins are nonflammable and have excellent chemical resistance, so they are used for backings and tubes.

In addition to mechanical parts such as seats, it is also used in electrical equipment products, linings, etc. However, this resin has a high degree of crystallinity and is not compatible with ordinary plastic adhesives, so it is extremely difficult to adhere it to the surface of a silicone resin or rubber layer as it is.

In the present invention, a fluorine-containing resin film is subjected to a surface corona discharge treatment or the like to activate the surface as rough as possible, so that it can be used for example, vinyl chloride or epoxy.

It increases the affinity with resin adhesives such as acrylic and polyester, or adhesives made by using a mixture of these resins. The above-described treatment usually results in roughening of the surface portion of the fluorine-containing resin film. For this purpose, a discharge treatment is performed under the conditions of, for example, 100 to 200 V, 40 to 100 μF, and a short circuit current of 1 to 2 A. Such discharge treatment gives the fluorine-containing resin film the desired adhesion ability, but the surface treatment of the fluorine-containing resin film used in the present invention is not limited to this, and other surface treatments etc. can give the same or better adhesive ability. It is fine as long as it is effective.

The resin constituting the fluorine-containing resin film includes various polyfluoroethylenes synthesized from monomers in which one or more hydrogen atoms of ethylene are replaced with fluorine atoms, such as polytetrafluoroethylene, or partially chlorine. There are various types of polyfluorochloroethylene, such as polytrifluorochloroethylene, including polyvinyl fluoride, polyvinylidene fluoride, polydichlorodifluoroethylene,
Others are also included. All of these fluorine-containing resins have high melting points, so normal calendar processing cannot be performed, so they must be melted and then extruded, or powdered resins must be heated under pressure and molded into a film. is common, but is not particularly limited to this method. The thickness of the film is generally 0.0011 to 0.5 ta, preferably 5
~50 microns, but thicker or
It can be made thinner and there is no particular limitation. Further, the fluorine-containing resin film may be mixed with other resins such as MMA or the like, as long as the object of the present invention is achieved. Commercially available fluorine-containing resin films used in the present invention include Tetra Film (Dupont Trademark) and Afflex Film (Asahi Glass Trademark).

In the present invention, it is preferable that a fluorine-containing resin in the form of a film with a substantially smooth surface is adhered to the upper surface of the silicone resin or rubber coating layer, but a method of applying a fluorine-containing resin solution, emulsion, etc. is also possible. be. The fluorine-containing resin film used in the present invention preferably has a tensile strength of 100 kg/c1 or more.

In the present invention, the antifouling/weatherproof coating layer may be formed of acrylic resin. For this purpose, an acrylic resin film is generally used, but a method of applying an acrylic resin solution or emulsion onto a silicone resin or rubber coating layer and drying may also be used.

The acrylic resin film used in the present invention is 100k
g/c It is preferable to have a tensile strength of 11 or more, and 1
Preferably, it has a weight of ~50 g/rrr, preferably 3-30 g/rrr, or a thickness of 5 microns or more (usually 10-50 microns), more preferably 8θ-15 microns.

The acrylic resin film applied to the present invention may be based on the T-die method, the inflation method, or any other method. Further, it may be either stretched or unstretched, but the elongation is preferably about 100 to 300%. Further, as mentioned above, the thickness is usually about 5 μm to 50 μm, but it may be slightly thicker or thinner if sufficient weather resistance and antifouling properties are achieved. The film material may be a polyalkyl methacrylate film mainly made of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, etc., or a homomonomer or comonomer of acrylate, vinyl acetate, vinyl chloride, styrene, acrylonitrile, methacrylate trile, etc. It is preferable to use a homopolymer or copolymer formed into a film. Such a film is made of silicone resin or rubber coated W.
1. It is attached to the surface of M using an adhesive or by other methods.

In the present invention, the antifouling/weatherproof coating layer formed on the silicone resin or rubber coating layer is composed of a polyvinylidene fluoride resin layer and an acrylic resin layer, in addition to the above-mentioned fluorine-containing resin and acrylic resin. It may consist of a laminate or a laminate of a polyvinylidene fluoride resin layer, an acrylic resin layer, and a polyvinyl chloride resin layer. In these laminates, the thickness of the polyvinylidene fluoride resin layer is 2 to 2.
3 microns, the thickness of the acrylic resin layer is preferably 2 to 4 microns, and the thickness of the polyvinyl chloride resin layer is preferably 40 to 45 microns, but the thickness is not limited to these values.

The non-combustible sheet of the present invention has sufficient non-combustibility or flame retardancy, has little dirt during use, and prevents dirt particles from penetrating into the coating layer or causing the coating layer to peel off. Therefore, it has a wide range of uses as a nonflammable sheet material.

The noncombustible sheet of the present invention does not emit smoke or generate heat even at high temperatures, and can be used as a building material for gymnasiums, warehouses, markets, playgrounds, factories, parking lots, various accommodation facilities, etc. where fire is expected. It is useful as an interior material and also as a material for tents, awnings, window shades, sheets, partitions, etc.

The following margin procedure amendr (voluntary): February 4, 1985 Manabu Shiga, Commissioner of the Patent Office1, Indication of the case, Patent Application No. 100392 filed in 1982,2, Name of the invention: Nonflammable sheet material3, Person making the amendment Relationship to the case Patent applicant name: Hiraoka Orisen Co., Ltd. 4, agent address: 56-8-1o Toranomon-chome, Minato-ku, Tokyo 105
Column 6 of “Detailed Description of the Invention” of the specification subject to amendment, contents of amendment (]) Page 5, line 13 of the specification, “inorganic nonflammable fibers” has been replaced with “inorganic flame retardant fibers,” For example, it is corrected to carbon fiber J.

(2) The following statement is inserted between lines 5 and 6 on page 12 of the specification.

“The sheet material of the present invention may be formed into a tape,
Alternatively, a sheet material cut into tape shapes may be used.

For example, the tape-like sheet of the present invention can be used by covering or wrapping it in applications that require heat resistance and flame retardancy, such as electric wires and cables. ”

Claims (1)

[Scope of Claims] 1. A nonflammable base fabric made of nonflammable fiber fabric, and at least one surface of the nonflammable base fabric is coated and is selected from nonflammable or flame-retardant silicone resin and silicone rubber. A nonflammable coating layer formed from a coating material containing at least one kind, and a thermoplastic synthetic resin material that coats at least one of the nonflammable coating layers and has excellent stain resistance and weather resistance. A non-combustible sheet material comprising a stain-proof and weather-resistant coating layer. 2. The nonflammable sheet material according to claim 1, wherein the nonflammable base fabric is made of glass fiber fabric. 3. The nonflammable coating layer is made of at least one selected from the nonflammable or flame retardant silicone resin and silicone rubber.
12. A sheet material according to claim 11, consisting only of seeds. 4. The nonflammable wave W layer is made of at least one selected from the nonflammable or flame retardant silicone resin and silicone rubber.
2. A sheet material according to claim 1, which is formed from a mixture of seeds and 30 to 300% by weight of non-combustible or flame-retardant fillers. 5. The sheet material according to claim 1, wherein the antifouling/weather-resistant synthetic resin is made of at least one selected from fluorine-containing resins and acrylic resins. 6. The sheet material according to claim 1, wherein the antifouling/weather-resistant coating layer is formed of a laminate consisting of a polyvinylidene fluoride resin layer and an acrylic resin layer. 7. The sheet according to claim 1, wherein the antifouling/weather resistant wave WtN is formed of a laminate of a polyvinylidene fluoride resin layer, an acrylic resin layer, and a polyvinyl chloride resin layer. material.