▎ 摘　　要

NOVELTY - Preparation of three-dimensional graphene-based composite material involves soaking foam metal in graphene oxide solution, etching obtained graphene oxide/foam metal composite material using dilute mixed acid, annealing obtained three-dimensional graphene oxide, mixing obtained three-dimensional high-quality thin layer graphene with microbial chiral extract solution, adding obtained three-dimensional graphene composite material loaded by microbial chiral extract to epoxy resin solution, using synthetic fiber cloth as basic template, coating obtained high-quality thin layer graphene electromagnetic shielding slurry on single surface and double surfaces of synthetic fiber cloth, soaking obtained synthetic fiber cloth/graphene electromagnetic shielding composite material and graphene electromagnetic shielding composite material/synthetic fiber cloth/graphene electromagnetic shielding composite material in liquid phase system of high-molecular polymer, curing, and packaging. USE - Preparation of three-dimensional graphene-based composite material used as electromagnetic shielding material (claimed). ADVANTAGE - The method enables to prepare three-dimensional graphene-based composite material having ultra-light weight, excellent oxidation resistance, corrosion resistance and flexibility, and high efficiency electromagnetic shielding. DETAILED DESCRIPTION - Preparation of three-dimensional graphene-based composite material involves soaking foam metal in graphene oxide solution for ultrasonic treatment, drying, etching obtained graphene oxide/foam metal composite material using dilute mixed acid, drying, annealing obtained three-dimensional graphene oxide in inert gas/hydrogen mixed atmosphere, mixing obtained three-dimensional high-quality thin layer graphene with microbial chiral extract solution, adding obtained three-dimensional graphene composite material loaded by microbial chiral extract to epoxy resin solution, using synthetic fiber cloth as basic template, coating obtained high-quality thin layer graphene electromagnetic shielding slurry on single surface and double surfaces of synthetic fiber cloth, forming corresponding synthetic fiber cloth/graphene electromagnetic shielding composite material and graphene electromagnetic shielding composite material/synthetic fiber cloth/graphene electromagnetic shielding composite material, soaking synthetic fiber cloth/graphene electromagnetic shielding composite material and graphene electromagnetic shielding composite material/synthetic fiber cloth/graphene electromagnetic shielding composite material in liquid phase system of high-molecular polymer, curing, and packaging.