▎ 摘　　要

NOVELTY - Improving the corrosion resistance of carbon fiber or carbon fiber composite material modified with functional graphene, comprises e.g. impregnating the carbon fiber material in the polymer carbon source impregnating solution and drying to obtain prepreg, molding the prepreg by mold to obtain precursor material, then subjecting precursor material to carbonization and graphitization to obtain functional graphene modified carbon fiber material, and placing functional graphene modified carbon fiber material in polytetrafluoroethylene solution for impregnation treatment, drying and sintering. USE - The method is useful for improving the corrosion resistance of carbon fiber or carbon fiber composite material modified with functional graphene. ADVANTAGE - The method: has simple process, and is suitable for industrial production; and the composite material: has strong hydrophobicity, strong corrosion resistance, and excellent durability. DETAILED DESCRIPTION - Improving the corrosion resistance of carbon fiber or carbon fiber composite material modified with functional graphene, comprises (i) (a) impregnating the carbon fiber material in the polymer carbon source impregnating solution and drying to obtain prepreg, (b) molding the prepreg by mold to obtain precursor material, (c) subjecting precursor material to carbonization and graphitization to obtain functional graphene modified carbon fiber material, and (d) placing functional graphene modified carbon fiber material in a polytetrafluoroethylene solution for impregnation treatment, drying and sintering to obtain polymer carbon source solution and/or polytetrafluoroethylene solution added with functional graphene; (ii) (a) coating the polymer carbon source solution on the surface of the carbon fiber composite material and drying, then carrying out carbonization and graphitization to obtain functional graphene surface modified carbon fiber composite material, and (b) placing functional graphene surface modified carbon fiber composite material is placed in polytetrafluoroethylene solution for impregnation treatment, drying and sintering to obtain polymer carbon source solution and/or polytetrafluoroethylene solution added with functional graphene, and (iii) (a) coating polymer carbon source solution on the surface of the carbon fiber composite material and drying to obtain functional graphene surface modified carbon fiber composite material, (b) placing functional graphene surface modified carbon fiber composite material in polytetrafluoroethylene solution for impregnation treatment, drying, sintering to obtain polymer carbon source solution and/or polytetrafluoroethylene solution added with functional graphene.