A preparation method of high-strength flame-retardant polyethylene plastic woven cloth

Abstract

The invention belongs to the technical field of polyethylene woven fabrics, and particularly relates to a method for preparing high-strength flame-retardant polyethylene plastic woven fabrics. The method includes preparing raw materials; preparing intermediate materials A from magnesium hydroxide; preparing intermediate materials B from magnesium sulfate; blending and weaving the intermediate materials A and the intermediate materials B to obtain the high-strength flame-retardant polyethylene plastic woven fabrics. Compared with the prior art, the method has the advantages that the compatibility of the magnesium hydroxide and polyethylene molecules is changed by means of treatment by the aid of brominated bisphenol A epoxy vinyl ester resin, vinyl di-stearamide and nitrified chitosan, binding force between polyethylene and the intermediate materials A can be increased, and the processing properties can be improved; the magnesium sulfate is modified by silane coupling agents and chlorostyrene, and accordingly the flame-retardant properties of the high-strength flame-retardant polyethylene plastic woven fabrics obtained by the aid of the method can be strengthened; the flame retardance can be improved while the usage of the magnesium hydroxide is reduced, accordingly, agglomeration phenomena due to excessive additive amount of the magnesium hydroxide can be prevented, and the tensile strength and the comprehensive mechanical properties of the high-strength flame-retardant polyethylene plastic woven fabrics obtained by the aid of the method can be strengthened; the high-strength flame-retardant polyethylene plastic woven fabrics are free of poison gas emission after being combusted and accordingly are high in safety and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of polyethylene woven cloth, and in particular relates to a preparation method of high-strength flame-retardant polyethylene plastic woven cloth. Background technique [0002] Polyethylene is widely used in plastic packaging materials, foaming materials, woven cloth materials, cable covering materials, etc., but its oxygen index is only 18.5, which is a flammable material, which limits its application; in order to improve polyethylene materials Flame retardancy, traditionally, halogen-containing flame retardants and antimony trioxide and other flame retardant synergists are generally added. This flame retardant will release a large amount of toxic hydrogen halide gas when burned, and the smoke is large, which will affect the environment and the environment. Great damage to personal safety. Therefore, magnesium hydroxide and aluminum hydroxide are promising alternatives as clean inorganic flame retardants wi...

AI Technical Summary

Problems solved by technology

[0002] Polyethylene is widely used in plastic packaging materials, foaming materials, woven cloth materials, cable covering materials, etc., but its oxygen index is only 18.5, which is a flammable material, which limits its application; in order to improve polyethylene materials Flame retardancy, traditionally, halogen-containing flame retardants and antimony trioxide and other flame retardant synergists are generally added. This flame retardant will release a large amount of toxic hydrogen halide gas when burned, and the smoke is large, which will affect the environment and the environment. Great damage to personal safety

Therefore, magnesium hydroxide and aluminum hydroxide are promising alternatives as clean inorganic flame retardants with the functions of filling, flame retardancy and smoke elimination. Hydroxide can release water when it is burned. When burning, it can absorb the heat released by combustion, produce water and oxides, have a certain carbonization effect on the polymer, form a protective layer, play a flame-retardant role, and at the same time inhibit the combustion of materials and the generation of smoke, and achieve halogen-free, The purpose of non-toxic and low-smoke, especially magnesium hydroxide as a flame retardant, has a high decomposition temperature, because the magnesium hydroxide halogen-free flame retardant can only achieve flame-retardant polymerization when the filling amount reaches more than 50%. The role of the material, which leads to a significant decrease in the mechanical properties of the polymer material, especially the toughness and strength. It is difficult to disperse evenly into the polymer matrix, which affects the processing performance and mechanical properties of polymer materials. Therefore, it is necessary to improve the processing performance and mechanical properties of materials on the basis of reducing the amount of magnesium hydroxide added.