▎ 摘　　要

NOVELTY - A graphene modified composite material comprises 2-2.5 pts. wt. modified graphene, 60-65 pts. wt. copolymerized polypropylene resin, 35-40 pts. wt. dimethylformamide, 10-12 pts. wt. phthalate, 2-3 pts. wt. alkyl diethanolamide, 1-2 pts. wt. diethylenetriamine, and 1-2 pts. wt. stearate. USE - Graphene modified composite material. ADVANTAGE - The graphene modified composite material has high tensile strength, tensile modulus, breaking strength and impact strength, so as to large bearing force and elastic deformation. Under the action of external force impact, the damage id avoided. Within the elastic limit, the composite material has strong resistance to bending deformation ability, high anti-wear ability, excellent anti-relaxation performance, and small deformation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of graphene modified composite material, which involves (S1) taking 2-2.5 pts. wt. modified graphene, adding to 35-40 pts. wt. dimethylformamide solvent, dispersing at high speed for 1 hour, and completely dissolving graphene in dimethylformamide, (S2) adding 60-65 pts. wt. copolymerized polypropylene resin and 10-12 pts. wt. phthalate, continuously dispersing at high speed, heating at 60-65 degrees C for 2 hours, raising the temperature to 85-90degreesC, and continuously ultrasonically stirring for 2 hours, (S2) orderly adding 2-3 pts. wt. alkyl diethanolamide, 1-2 pts. wt. diethylenetriamine, and 1-2 pts. wt. stearate, vacuum degassing, putting into a mold, curing for more than 3 hours at 60 plus minus 2degrees Celsius, demolding, and cutting to obtain a final product.