▎ 摘　　要

NOVELTY - Preparation of graphene/polymer composite hydrogel thin film involves: 1) carrying out oxidation-reduction method to form graphene water dispersing liquid, filtering, soaking obtained graphene film in water; 2) transferring impurity removed graphene hydrogel soaked thin film to a water solution of polymerization monomer, cross-linking agent and initiator, and immersing for 1-48 hours; and 3) transferring obtained hydrogel thin film to reaction container to make polymerization monomer process polymerization at 20-90 degrees C for 1-24 hours, and placing hydrogel thin film in water. USE - For preparation of graphene/polymer composite hydrogel thin film (claimed). ADVANTAGE - The method prepares graphene/polymer composite hydrogel thin film with a specific surface area of the graphene; can maintain relatively a stable gel in the compound; and has higher application value. DETAILED DESCRIPTION - Preparation of graphene/polymer composite hydrogel thin film, involves: 1) carrying out oxidation-reduction method to prepare graphene water dispersing liquid as raw material, filtering the graphene water dispersing liquid through vacuum filtration funnel cellulose ester filter membrane to obtain graphene hydrogel thin film, soaking the obtained graphene film in water for removing impurities; 2) transferring the impurity removed graphene hydrogel soaked thin film to a water solution of polymerization monomer, cross-linking agent and initiator, where polymerization monomer water solution concentration is 1-50 wt.%, the cross-linking agent is present in an amount of 1-5 wt.% by weight of polymerization monomer, and the initiator is present in an amount of 0.1-3 wt.% by weight of polymerization monomer, and immersing for 1-48 hours; and 3) removing the hydrogel thin film of the step 2) from the solution, and transferring to the reaction container to make polymerization monomer process polymerization, where the polymerization temperature is 20-90 degrees C, the reaction time is 1-24 hours, after the reaction is complete, placing the hydrogel thin film in water for removing un-reacted polymerization monomer and initiator to obtain the graphene/polymer composite hydrogel thin film.