JP2576055B2 - Flame retardant wall material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a flame retardant wall material having improved smoke generating properties.

[Conventional technology]

Conventionally, as a flame燃壁material, on燃難paper (flame-retardant base sheet layer), 130 g / m ² or more, usually a laminate of plasticized vinyl chloride resin layer having a basis weight of 130~300g / m ² As a flame retardant wall material, there is a material in which a phthalic acid ester or chlorinated paraffin is contained in a plasticizer.

[Problems to be solved by the invention]

By the way, flame-retardant wallpaper containing phthalic acid ester or chlorinated paraffin in these plasticizers,
Although both are called flame retardant, if the basis weight of the plasticized vinyl chloride resin layer is 130 g / m ² or more, the amount of the plasticizer contained in the resin layer increases and the amount of smoke generated increases. I was

The present invention has been made on the background of such a conventional technology, and has an object to provide a flame-retardant wall material having low smoke emission even when the basis weight of the plasticized vinyl chloride resin layer is 130 g / m ² or more. I do.

[Means for Solving the Problems] The present invention relates to a flame-retardant wall material in which a plasticized vinyl chloride resin layer having a basis weight of 130 g / m ² or more is laminated on a flame-retardant base sheet layer. The composition of the vinyl chloride resin is, with respect to 100 parts by weight of the vinyl chloride resin, a plasticizer of 30 to 150 parts by weight,
A flame-retardant wall material comprising 30 parts by weight or more of calcium carbonate and 5 parts by weight or more of titanium oxide, and containing at least 50% by weight of a monoalkyldiaryl phosphate in the plasticizer. Things.

The flame-retardant base material sheet layer referred to in the present invention is a base material layer of a flame-retardant wall material, and any material can be used as a base material sheet layer of a normal flame-retardant wall material. It can also be used, for example, asbestos paper, aluminum hydroxide paper, glass fiber woven fabric, paper treated with a flame retardant, made of flame retardant fibers such as polyvinyl chloride, polyvinylidene chloride, polyvinyl chloride or rayon Woven fabrics, non-woven fabrics or those obtained by paper-making fibers thereof can be mentioned. The degree of flame retardancy of the flame retardant base sheet layer is not particularly limited.

In addition, the plasticized vinyl chloride resin layer referred to in the present invention is a coat layer laminated on the flame-retardant base material sheet layer, and as a vinyl chloride resin forming the plasticized vinyl chloride resin layer, a general vinyl chloride resin is used. In addition to polyvinyl chloride alone obtained by suspension polymerization or emulsion polymerization, or a copolymer of vinyl chloride and vinyl acetate, ethylene, propylene, maleate, methyl methacrylate, methacrylate, higher vinyl ether, and the like, It includes mixtures of these with other polymers.

As the plasticizer contained in the plasticized vinyl chloride resin layer, at least a monoalkyldiaryl phosphate is used, and as other plasticizers, for example, di-2-ethylhexyl phthalate (DOP),
General phthalate plasticizers represented by dinonyl phthalate (DNP), diisononyl phthalate (DINP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), dioctyl adipate Ester (DOA), dioctyl sebacate (DOS), dioctyl azelate (DO
In addition to general fatty acid ester plasticizers represented by Z), triaryl phosphate plasticizers represented by tricresyl phosphate (TCP), tricyl phosphate (TXP), etc., and polyester plasticizers General primary and secondary plasticizers such as a polymer plasticizer and chlorinated paraffin can be used, but there is no particular limitation as long as they can be generally used as a plasticizer for a vinyl chloride resin.

The addition amount of these plasticizers is 30 to 150 parts by weight, preferably 50 to 100 parts by weight, based on 100 parts by weight of the vinyl chloride resin.If less than 30 parts by weight, the vinyl chloride resin layer becomes hard, and Construction is difficult. On the other hand, if it exceeds 150 parts by weight, it becomes too soft and is not preferable as a wall material.

It is necessary that the plasticizer contains at least 50% by weight of a monoalkyldiaryl phosphate. Here, examples of the monoalkyl diaryl phosphate include propyl diphenyl phosphate, octyl diphenyl phosphate, isodecyl diphenyl phosphate, and the like.

The proportion of the monoalkyldiaryl phosphate to the total amount of the plasticizer added is 50% by weight or more, preferably
The content is 70 to 100% by weight, and if it is less than 50% by weight, a good smoke suppressing effect cannot be obtained.

In addition, even if this plasticized vinyl chloride resin layer is not foamed,
It may be foamed. In the case of foaming, foaming can be carried out by using a foaming agent such as azodicarbonamide, dinitronepentamethylenetetramine, oxybisbenzenesulfonylhydrazide as a foaming agent for a vinyl chloride resin, and, if necessary, promoting foaming. An agent or a foam inhibitor may be added.

As a filler, at least calcium carbonate and titanium oxide are used, and as other fillers, for example, talc, hydrotalcite, magnesium carbonate, aluminum hydroxide and the like can be used.

The amount of calcium carbonate added is 100
30 parts by weight or more with respect to parts by weight, preferably 50 to 200 parts by weight, and if less than 30 parts by weight, the effect of suppressing smoke emission is unpreferably reduced. The sheet may be easily broken.

Further, the addition amount of titanium oxide is 5 parts by weight or more, preferably 10 to 50 parts by weight based on 100 parts by weight of the vinyl chloride resin. If the amount exceeds the weight part, the obtained sheet may be easily broken due to too much addition amount.

Further, as a stabilizer, for example, Ba-Zn system, Na-Zn system, Sn
General stabilizers used for vinyl chloride resins such as a system can be used.

The amount of the stabilizer is 0.5 to 10 parts by weight, preferably about 2 to 5 parts by weight, based on 100 parts by weight of the vinyl chloride resin.

In addition, as other flame retardants, for example, antimony trioxide, antimony pentoxide, zinc borate, molybdenum oxide and the like can be used in combination.

Further, in the plasticized vinyl chloride resin, a processing aid,
Pigments, ultraviolet absorbers, antistatic agents, antioxidants and the like can also be used.

Further, when the plasticized vinyl chloride resin layer is used as a paste, a diluting solvent such as mineral spirit can be used.

〔Example〕

Hereinafter, although an example of the present invention is described concretely, the present invention is not limited to this example.

Examples 1 to 5 and Comparative Examples 1 to 5 A plasticized vinyl chloride resin composition constituting the plasticized vinyl chloride resin layer having the composition shown in Table 1 was kneaded with a test roll for 5 minutes, and then mixed with water. A topping of about 0.12 mm in thickness on a flame-retardant base material sheet made of aluminum oxide paper, followed by heating at 200 ° C. for 2 minutes, thereby foaming the plasticized vinyl chloride resin to form a plasticized vinyl chloride resin layer To obtain a flame retardant wall material having a plasticized vinyl chloride resin layer having a basis weight of about 160 g / m ² .

After that, this flame retardant wall material was adhered to a 22 cm square pearlite plate with starch paste, and then a combustion test was performed based on JIS A1321.

 Table 1 shows the results (smoke emission coefficient = CA).

Examples 6 to 10 and Comparative Examples 6 to 8 A plasticized vinyl chloride resin paste constituting a plasticized vinyl chloride resin layer having the composition shown in Table 2 was coated on aluminum hydroxide paper to a thickness of 0.13 mm.
After heating at 0 ° C. for 2 minutes to gel, this is heated at 200 ° C. for 2 minutes to foam the plasticized vinyl chloride resin paste to form a plasticized vinyl chloride resin layer. A flame-retardant wall material having a 170 g / m ² plasticized vinyl chloride resin layer was obtained.

After that, a 22 cm square of the flame retardant wall material was adhered to a pearlite plate with starch paste, and then a combustion test was performed based on JIS A1321.

 Table 2 shows the results (smoke emission coefficient = CA).

As is clear from Tables 1 and 2, the flame retardant wall material of the present invention has a basis weight of the plasticized vinyl chloride resin layer of 130 g / m ^2.
Even above, the result that the smoke emission was extremely low was obtained.

[Effect of the Invention] Since the present invention is as described above, even if the basis weight of the plasticized vinyl chloride resin layer is 130 g / m ² or more, it is possible to provide a flame-retardant wall material having low smoke-generating properties.

Claims (1)

(57) [Claims] 1. A flame-retardant wall material comprising a flame-retardant base material sheet layer and a plasticized vinyl chloride resin layer having a basis weight of 1300 g / m ² or more, wherein the composition of the plasticized vinyl chloride resin is 100 to 100 parts by weight of vinyl resin, 30 to 150 parts by weight of plasticizer,
A flame-retardant wall material containing at least 30 parts by weight of calcium carbonate and at least 5 parts by weight of titanium oxide, and containing at least 50% by weight of a monoalkyldiaryl phosphate in the plasticizer.