▎ 摘　　要

NOVELTY - Preparing graphene-modified plastic comprises e.g. dispersing graphene material in organic solvent-water system, placing in a ball mill, mixing, grinding for 2-5 hours to obtain graphene mixture, adding modifier, active dispersing agent, co-dispersant and antioxidant, placing in the ultrasonic stripping agent, drying to obtain modified graphene, heating plastic substrate to obtain plastic substrate, blending modified graphene with plastic substrate in a molten state, then adding glass fiber, and introducing into granulator extrusion granulation, cooling and drying granules. USE - The method is useful for preparing graphene-modified plastic (claimed). ADVANTAGE - The plastic has strong sprinting strength. DETAILED DESCRIPTION - Preparing graphene-modified plastic comprises dispersing graphene material in organic solvent-water system, placing in a ball mill, mixing, grinding for 2-5 hours to obtain graphene mixture, adjusting the pH of the mixture of graphene to 10-10.6 using sodium hydroxide solution, adding modifier, active dispersing agent, co-dispersant and antioxidant, placing in the ultrasonic stripping agent, performing ultrasonic stripping for 30 minutes to 2 hours, drying to obtain modified graphene, heating plastic substrate at 240-300 degrees C to obtain plastic substrate in a molten state, blending modified graphene with plastic substrate in a molten state, then adding glass fiber, mixing, and introducing into granulator extrusion granulation to obtain particles, cooling and drying granules to obtain graphene-modified plastic.