Abstract: PP was filled with powder of waste plastic multilayer plates(GFRP), a coupling agents and a compatibilizer forming a composite, which was characterized using DSC，SEM, and the mechanical testings. When the content of GFRP (modified by 1 wt % KH570) and the compatibilizer was 20 phr and 2 phr, respectively, the impact strength of the composites increased markedly, the flexural strength and modulus also increased based on neat PP. SEM indicated that plasticity deformation occurred during fracture process of the composite. DSC showed that the addition of GFRP didn't changed crystal form of PP.

Key words: waste of plastics multilayer plates, polypropylene, ABS, unsaturated polyester, glass fiber