Process for preparing nano-SiO2/PET engineering plastic product

The invention discloses a production method of a nano SiO2/PET engineering plastic product; nano SiO2/PET composite material slices are taken as the raw materials and a general injection/extrusion process is adopted, so as to first dry the raw materials before injection/extrusion, so that the water content of less than or equal to 40ppm is regarded as the main characteristic. By adding in an appropriate amount of flame retardant, alkali-free glass fiber and special nucleating agent are modified, so that the produced engineering plastic product has higher physical performance and process performance, is more applicable in producing all types of engineering plastic products. The production method is characterized by easy process, quick knockout, good quality of finished products, wide scope of application, applicable in mass industrialized production, etc.