▎ 摘　　要

NOVELTY - Preparing graphene foam conductive composite material comprises dissolving the polybenzoxazine resin in N,N-dimethylformamide solvent to obtain polyethersulfone resin solution, soaking the graphene foam nickel in the polybenzoxazole resin solution for ultrasonic treatment, taking out and drying; mixing the cobalt with dimer fatty acid prepolymer, ultrasonic oscillating, transferring to the reaction kettle, adding product A and urea to react to obtain the product B; in the deionized water, adding product B, isocyanate and polyaspartic acid, ammonium persulfate into mixed solution in a sealed container, vacuumizing and reacting, adding N, N-dimethyl formamide, centrifuging, pouring the supernatant into methanol to obtain precipitate, calcining the precipitate to obtain the product C; in the deionized water, adding carboxymethyl chitosan and sodium caseinate, forming mixed solution, continuously stirring, cooling to room temperature spraying surface of the product C to dry. USE - The composite material is used for flexible conductive, heat conduction, thermal management, electromagnetic shielding, absorbing, catalytic, sensing and energy storage material. ADVANTAGE - The method solves the technical problem of bad signal transmission and non-deformation resistance caused by poor conductivity of the wearable sensor. The graphene foam with three-dimensional conductive network prepared by chemical deposition method is further used for dipping the polybenzoxazine resin solution, the graphene foam conductive composite material prepared by the steps of spraying the chitosan/casein solution has high conductivity and high flexibility, deformation resistance and high weather resistance, at the same time, it has good biological compatibility and biological degradability.