▎ 摘　　要

NOVELTY - Preparing poly(vinylidene fluoride)-trifluoroethylene (TrFE)/graphene composite material involves stirring PVDF-TrFE powder and graphene nanoparticle in N,N-dimethylformamide solution uniformly using an ultrasonic stirrer and mechanical stirrer to obtain mixed solution and solidifying the mixed solution in drying box for obtaining original crystallization film. The film after primary crystallization is placed on the stretching machine and subjected to axial tension, stretched under the action of heat to polarize the thin film. USE - Method for preparing poly(vinylidene fluoride)-trifluoroethylene (TrFE)/ graphene composite material. ADVANTAGE - The method enables to prepare poly(vinylidene fluoride)-trifluoroethylene/graphene composite material which has high piezoelectric performance in simple operation, low technical requirement and cost effective manner.