▎ 摘　　要

NOVELTY - Three-dimensional silver-graphene hybrid foam/epoxy-resin electromagnetic shielding composite material comprises 71.8-76.8 pts. wt. thermosetting epoxy resin, 0.1-0.4 pts. wt. 4-Dodecylbenzenesulfonic Acid, 0.8 pts. wt. graphene oxide foam, 2.0-8.0 pts. wt. silver sheet and 19.0-20.3 pts. wt. curing agent. USE - Three-dimensional silver-graphene hybrid foam/epoxy-resin electromagnetic shielding composite material. ADVANTAGE - The three-dimensional silver-graphene hybrid foam/epoxy-resin electromagnetic shielding composite material increases efficiency of the composite material to 58 Decibel and electromagnetic shielding efficiency of the existing electromagnetic shielding material 20-40 Decibel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing three-dimensional silver-graphene hybrid foam/epoxy-resin electromagnetic shielding composite material, which involves adding 4-Dodecylbenzenesulfonic Acid, oxidized graphene foam and silver sheet in water, carrying out thermal reduction to obtain silver-graphene foam network framework, mixing thermosetting epoxy resin and the curing agent, adding resulting mixture into graphene foam network framework of the silver, orderly performing deaeration and curing to obtain three-dimensional silver-graphene hybrid foam/epoxy resin composite electromagnetic shielding material.