PET modified material as well as preparation method and application thereof

The invention provides a PET modified material as well as a preparation method and application thereof. The PET modified material is prepared from the following components in percentage by mass: 45 to 90 weight percent of polyethylene glycol terephthalate, 0 to 20 weight percent of heat-conducting filler, 1.3 to 6.4 weight percent of additive and 7 to 50 weight percent of glass fiber. Wherein the melt index of the PET modified material is 10 g/10 min to 20 g/10 min. The PET modified material has high molecular weight, and the mechanical property of the PET modified material can be improved. 本申请提供了一种PET改性材料及其制备方法和应用。制备该PET改性材料包括以下质量百分比的组分：聚对苯二甲酸乙二醇酯45wt%~90wt%、导热填料0wt%~20wt%、助剂1.3wt%~6.4wt%、玻璃纤维7wt%~50wt%；其中，PET改性材料的熔融指数为10g/10min~20g/10min。该PET改性材料具有较高的分子量，有利于提升其PET改性材料的力学性能。