Glass fiber reinforced flame-retardant PET (Polyethylene Terephthalate) material and preparation method thereof

The invention relates to a glass fiber reinforced flame-retardant PET (Polyethylene Terephthalate) material and a preparation method thereof, and belongs to the technical field of high polymer materials. The glass fiber reinforced flame-retardant PET material comprises PET resin, glass fibers, a flexibilizer, phosphinate, long-chain polyphosphate, modified silicon dioxide, an antioxidant, a lubricant, a filler mixture and a nucleating agent. Wherein the number of carbon atoms in the long-chain polyphosphate is 15 to 25; wherein the long-chain polyphosphate and the modified silicon dioxide can effectively cooperate with the phosphinate flame-retardant PET resin, so that not only is the heat release rate of the PET resin material reduced, but also relatively good heat stability and mechanical properties of the PET resin material are maintained. 本发明涉及一种玻纤增强阻燃PET材料及其制备方法，属于高分子材料技术领域。一种玻纤增强阻燃PET材料包括PET树脂，玻璃纤维，增韧剂，次膦酸盐，长链多聚磷酸盐，改性二氧化硅，抗氧剂，润滑剂，填料混合物，成核剂；其中，所述长链多聚磷酸盐中的碳原子个数为15～25个；其中，长链多聚磷酸盐，改性二氧化硅能有效协效次膦酸盐阻燃PET树脂，不仅降