▎ 摘　　要

NOVELTY - Modified polypropylene composite material comprises 100-110 pts. wt. polypropylene, 10-15 pts. wt. polyolefin elastomer and 5-55 pts. wt. composite modified filler. USE - Used as modified polypropylene composite material. ADVANTAGE - The material with high mechanical strength and impact resistance, size stability is close to the metal. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing modified polypropylene composite material comprising (1) adding graphene on the organic solvent to form graphene dispersion, mixing uniformly with the nitrogen-containing precursor, carrying out high temperature reaction to obtain nitrogen-doped graphene, (2) soaking the bamboo powder in the alkali solution and drying to obtain the modified bamboo powder, and (3) mixing the nano calcium carbonate, nitrogen-doped graphene modified bamboo powder, uniformly mixing with polypropylene and polyolefin elastomer, using double-screw granulator to extruding and granulating and using double-screw injection molding machine for injection molding.