▎ 摘　　要

NOVELTY - The preparation method of carbon fiber surface grafted two-dimensional network structure reinforced polyether ether ketone composite material, involves mixing carbon fiber, p-phenylenediamine, nitrite and concentrated hydrochloric acid, and performing a diazotization reaction to obtain aminated carbon fiber, mixing biphenyl dianhydride, amino silane coupling agent and first solvent for modification to obtain a modified silane coupling agent, mixing the dispersion liquid of silica nanowires with the modified silane coupling agent for modification to obtain modified silica nanowires, mixing the modified silica nanowire, aminated graphene, aminated carbon fiber, and a second solvent to perform grafting to obtain a two-dimensional network structure grafted carbon fiber, mixing two-dimensional network structure grafted carbon fiber and polyether ether ketone, and performing extrusion and molding. USE - Preparation of carbon fiber surface grafted two-dimensional network structure reinforced polyether ether ketone composite material. ADVANTAGE - The method increases the polarity and activity of the carbon fiber surface, and then graft silica nanowires and aminated graphene on the surface of the carbon fiber through covalent bonding to form a carbon fiber with a two-dimensional interpenetrating network structure, improve the surface polarity and roughness of the carbon fiber, improve the interface strength of the carbon fiber/polyetheretheretherketone composite, and solve the problem of the weak bonding of the nanoparticle and the fiber surface. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a carbon fiber surface is grafted with a two-dimensional network structure reinforced polyether ether ketone composite material prepared by the preparation method, which comprises polyether ether ketone and modified carbon fiber bonded to the polyether ether ketone, the surface of the modified carbon fiber is grafted with silica nanowires and aminated graphene, and the silicon dioxide nanowires and aminated graphene are connected by covalent bonds to form a two-dimensional network structure.