▎ 摘　　要

NOVELTY - Electrolyte is prepared by dispersing components in water solution containing 0.01-0.7 mol/L acid, 25-2000 mg/L graphene material and 5-500 mmol/L electropolymerization monomer. USE - Electrolyte used for preparing modified carbon fiber, and in manufacturing transportation equipment, sports equipment, aerospace equipment or defense and military products (all claimed). ADVANTAGE - The modified carbon fiber and the resin matrix in the composite material have better bonding performance, higher interlaminar shear strength, glass transition temperature and storage modulus, which is used for manufacturing aerospace aircrafts, transportation tools, high-performance equipment, and sports equipment, and have important application prospect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for following: (1) a modified carbon fiber, which is obtained by simultaneously carrying out electrophoretic deposition, and electropolymerization using a carbon fiber as an anode in the electrolyte. (2) A method for producing a modified carbon fiber, which involves taking the electrolyte, and taking the carbon fiber as an anode, and simultaneously carrying out electrophoretic deposition and electropolymerization in the electrolyte. (3) A modified carbon fiber/resin composite material, which is prepared by compounding the modified carbon fiber with a resin matrix, which is thermosetting resin or thermoplastic resin. (4) A method for preparing a carbon fiber composite material, which involves: mixing a resin matrix and a curing agent, fully infiltrating the modified carbon fiber, and curing the resin matrix.