The present invention relates to a stress-whitening-resistant flame-retardant polypropylene composite material and its preparation method. The product comprises, by weight: 70-85 parts copolymer polypropylene, 5-10 parts flame retardant, 2-8 parts polyethylene, 2-8 parts polystyrene, 1-3 parts nano glass fiber, and 0.05-0.2 parts nucleating agent. The flame retardant is a brominated flame retardant with 6 wt% bromine content. Preparation method: After uniformly mixing all components by weight ratio, they are fed into a twin-screw extruder for extrusion and pelletization, yielding the stress-whitening resistant flame-retardant polypropylene composite material. The method of the present invention is simple, and the product exhibits both excellent stress-whitening resistance and flame retardancy.
Country Code: CN
Application Number: CN202211720838.9
