▎ 摘　　要

NOVELTY - Polypropylene composition comprises 70-99.8 pts. wt. polypropylene resin, 0-30 pts. wt. toughening agent, 0.2-0.6 pts. wt., preferably 0.4 pts. wt. mold release agent is graphene material, where the layer number of the graphene material is 1-10 layers, preferably 2-5 layers. USE - The polypropylene composition is useful in automobile plastic parts (claimed). ADVANTAGE - The composition: has easily slidable graphene material with a sheet-layer structure and low the friction coefficient of the plastic surface; and improves the mold release properties of polypropylene materials to obtain an easy mold release and low odor polypropylene composition with excellent mechanical properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing polypropylene composition, comprising mixing the components uniformly, adding into the twin-screw extruder for melting and kneading at 170-220 degrees C at the screw speed of 350-450 revolutions/minute, extruding and granulating; and (2) application of graphene materials in improving demoldability and reducing odor of polypropylene compositions.