▎ 摘　　要

NOVELTY - Porous graphene electromagnetic wave absorbing material comprises multiple components of nanoparticles, epoxy resin, foaming agent and graphene microchip, the material is a porous structure, where the pore size of the pores in the porous structure is 0.5 nm-1.5 cm, having a porosity of 40-80% and absorption rate of 5-50% for electromagnetic waves having a wavelength of 7-10 GHz. USE - The material is useful in radiating soundproof material or device, adsorption carrier material or device, electromagnetic shielding materials or devices and electromagnetic materials or devices (claimed). ADVANTAGE - The material can effectively absorb or loss the electromagnetic waves, reduces secondary reflection of electromagnetic waves and reduces agglomeration of the graphene sheets to a certain extent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the porous graphene electromagnetic wave absorbing material comprising mixing uniformly the ferric cation-containing graphene microchip, epoxy resin, multi-component nano particles and foaming agent, then heating and foaming at 10-200 degrees C for 1-5 hours.