Halogen-free flame-retardant polycarbonate/styrene resin alloy as well as preparation method and application thereof

Abstract

The invention discloses a halogen-free flame-retardant polycarbonate / styrene resin alloy as well as a preparation method and application thereof. The damp-heat aging resistant halogen-free flame retardant polycarbonate / styrene resin alloy is prepared from the following components in parts by weight: 35 to 45 parts of polycarbonate resin, 15 to 35 parts of silicon copolymerized polycarbonate resin, 25 to 45 parts of styrene resin, 5 to 15 parts of phosphazene halogen-free flame retardant, 2 to 5 parts of compatilizer, 0.5 to 2 parts of talcum powder and 0.5 to 1.5 parts of other auxiliaries. Through the synergistic effect of the phosphazene halogen-free flame retardant, the silicon copolymerized polycarbonate resin, the talcum powder and other components, the heat and humidity resistance of the halogen-free flame-retardant polycarbonate / styrene resin alloy is improved, the mechanical property retention rate in a hot and humid environment is high, and the alloy is high in oxygen index and good in flame retardant property.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more particularly, to a halogen-free flame-retardant polycarbonate / styrene resin alloy and a preparation method and application thereof. Background technique [0002] Polycarbonate resin (PC) is colorless and transparent, has excellent heat resistance, high strength and impact resistance, and is dimensionally stable and has good flame retardancy. It belongs to a very wide range of engineering plastics. Styrenic resins mainly include acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-acrylate-styrene copolymer (ASA) and acrylonitrile-ethylene propylene rubber-styrene copolymer (AES). ), the above-mentioned styrene resins coordinate the superior properties of the three copolymerization components, so they have excellent impact strength, good processability and chemical stability, easy to mold, and the product is shiny, and has both toughness and flexibility. , the overall...

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Problems solved by technology

[0006] In order to overcome the defects of poor heat and humidity resistance described in the above-mentioned prior art, the present invention provides a kind of halogen-free flame-retardant polycarbonate / styrene resin alloy, through phosphazene-type halogen-free flame retardant, silicon copolymerized polycarbonate The synergistic effect of resin, talcum powder and other components improves the heat and humidity resistance of the halogen-free flame-retardant polycarbonate / styrene resin alloy, and the retention rate of mechanical properties in the heat and humidity environment is high, and the alloy has a high oxygen index and is flame retardant. good performance

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