Flame-resistant vinyl benzene polymer foam plastic

Abstract

The invention relates to a flame-retardant styrene polymer foam plastics, which comprises styrene polymer and flame-retardant agent compound. The weight of phosphorus-containing compound takes up 2 percent to 4 percent of the total weight of the styrene polymer. The weight of HBCD takes up at least 5 percent to 8 percent of the total weight of the styrene polymer. The weight of antimony oxide compound takes up at least 2 percent of the total weight of the styrene polymer; the weight of expansion flame-retardant compound takes up at least 6 percent to 12 percent of the total weight of the styrene polymer. The invention, by recycling the styrene polymer foam plastics and through the extrusion production technique of common styrene polymer foam plastics, gets the styrene polymer foam plastics with good flame-retardant performance (the flame-retardant performance meets the requirement on heat insulation foam plastics of GB8624). The extruded type flame-retardant styrene polymer foam plastics the invention gets has low coefficient of thermal conductivity ( high energy saving efficiency), high intensity, and the flame retardance which can meet the requirement of national building fireproof standard, replaces molded type styrene polymer foam plastics and has good prospect on building insulation and pipe sandwich heat thermal insulation, etc.

Description

technical field [0001] The invention relates to flame-retardant polystyrene foam plastics, in particular to a flame-retardant styrene polymer foam plastic, which is produced by ordinary polystyrene extrusion foaming process by using recycled styrene polymer foam plastics and has excellent flame-retardant properties. And a certain thickness of the flat plate. Background technique [0002] For decades, with the wide application of polystyrene foam in building insulation, packaging (industrial and daily necessities), etc., a large amount of waste polystyrene foam has caused a large area of ​​"white pollution", which has brought great harm to people's lives. and production hazards. Therefore, most domestic manufacturers use recycled waste PS to produce extruded polystyrene foam boards, which solves the environmental protection problems of waste polystyrene foam from one aspect. At the same time, my country's construction industry management department has proposed that the ori...

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Problems solved by technology

[0011] Composite flame retardants are very effective in improving the flame retardancy of thermoplastic polystyrene foam (XPS), but their additions have a greater impact on the physical and chemical properties, structure, appearance, and production process of the product, resulting in 1) Poor dispersibility of powder flame retardants in foam plastics, resulting in non-uniform expansion and poor skin quality, 2) High degradation of styrene polymers and high regrinding of materials in extrusion process due to overheating, resulting in styrene polymerization The molecular weight of the foamed plastics and regrinded styrene polymers is reduced, and the physical properties are reduced. The flame retardant of the composite flame retardant should not exceed 30%. At the same time, the composite flame retardant contains a certain modifier to improve the flow of the plastic performance etc.

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