▎ 摘　　要

NOVELTY - Preparation of high strength casein/graphene composite hydrogel comprises taking casein as base material and triethanolamine solution as solvent, obtaining casein solution under mechanical action, ultrasonically dispersing graphene in polyvinylpyrrolidone (PVP) mixed solution, obtaining graphene dispersion liquid, crosslinking the casein solution and graphene dispersion liquid by physical blending method to obtain uniform casein/graphene dispersion liquid, and obtaining casein/graphene composite hydrogel material with stable structure performance through acid slow release. USE - The method is for preparation of high strength casein/graphene composite hydrogel used e.g. in coating material and biological medicine. ADVANTAGE - The method provides composite hydrogel, which has stable structure performance through acid slow release, high safety, and improved mechanical property and adhesive property, and uses raw materials with natural component source.