▎ 摘　　要

NOVELTY - Porous graphene composite wave absorbing material comprises ferric ion of graphite alkene micro chip, polymer and foaming agent complex formation, having porous structure, pore diameter is 1 nm-1 cm and the porosity is 50-90 %. USE - The porous graphene an electromagnetic wave absorbing composite is useful for material manufacture in insulation materials or devices, heat sink material or device, adsorption material or device, electromagnetic shielding materials or devices, electromagnetic stealth materials or devices and electromagnetic absorbing materials or devices and in sound insulation coating and heat abstractor coating (claimed). ADVANTAGE - The porous graphene composite wave absorbing material: has light quality, multi-hole, wide absorbing frequency, corrosion resistance and high temperature resistance; The method: is simple, economical and easy to use. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing porous graphene composite wave absorbing material comprising taking ferric ion graphite alkene micro chip, polymer and/or polymer monomer and foaming agent, evenly mixing, heating, to obtain composite material, where heating and foaming process condition including heating at 10- 150 degrees C for 1-5 hours.