关键词: 聚丙烯；车用再生材料；力学性能

Abstract: In order to verify the feasibility of recycled polypropylene materials used in automotive recycled parts, the differences of density, tensile properties, bending properties, impact properties, thermal deformation temperature and Vicat softening temperature between modified polypropylene and recycled polypropylenewith different talc content are compared and analyzed. The results show that compared with the original polypropylene, the strength of regenerated polypropylene increased, the toughness decreased, and the resistance to thermal deformation of the material had no significant change. The increase in talc powder content increases the density of the material and its strength, reduces its toughness, and improves the ability of the material to resist thermal deformation. It provides data support for the modification and application of recycled polypropylene.

Key words: Polypropylene; Automotive recycled materials; Mechanical property