▎ 摘　　要

NOVELTY - A carbon fiber composite material comprises carbon fiber, polyethylene terephthalate, aralkyl sulfonate, modified graphene, mixed resin containing modified polyethylene, and coupling agent. USE - Carbon fiber composite material. ADVANTAGE - The composite material has excellent performance, tensile strength, bending strength and impact strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of the carbon fiber composite material, which involves adding the carbon fiber into the reaction urn, and then adding the roughening solution to react to roughen the carbon fiber, adding the roughened carbon fiber, polyethylene terephthalate and modified graphene into a mixer for mixing, and taking out the mixed material and adding into the reaction urn again, adding aralkyl sulfonate, mixed resin and coupling agent, heating and stirring, controlling the temperature at 180-190 degrees C, keeping for 15 minutes, keep stirring during this time, stop heating, cooling at room temperature, and adding into a twin screw extruder when is cooled to 100-120 degrees C, and extruding and shaping.