▎ 摘　　要

NOVELTY - A graphene-based composite foam material comprises an open cell/pore foam material having a graphene-based material inserted or distributed within. USE - A graphene-based composite foam material. ADVANTAGE - The low-density foam material has high performance acoustic absorption, as well as increased moisture insulation and fire-retardant properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-based composite which involves providing a concentration of graphene-based material and porous polymeric material in a liquid, sonicating the liquid to promote incorporation of graphene-based material into and/or over the pores of the polymeric material, and removing the liquid to afford the graphene-based composite. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the mechanism of enhanced acoustic absorption through graphene-based lamellar structure in porous structure. Sound waves (30) Sound source (35) Semi-open cellular structure (50) Graphene lamella blockage (55) Residual noise (70)