▎ 摘　　要

NOVELTY - Preparing graphene heat conducting foam comprises coating graphene oxide slurry on substrate to obtain the graphene oxide coating, drying the graphene oxide coating, so that the graphene oxide coating is not completely dried, drying at normal temperature or/and heating and drying, freezing and drying the graphene oxide coating not completely dried to obtain graphene oxide heat conducting foam, and carrying out heat treatment to the graphene oxide heat conducting foam. USE - The method is useful for preparing graphene heat conducting foam. ADVANTAGE - The method: can realize the control of graphene foam pore structure, can control the orientation of graphene satisfy graphene foam as high heat-conducting composite material reinforced body; uses graphene, which can realize good directional arrangement, so as to realize the composite material oriented high heat-conducting performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMs are also included for: Graphene heat-conducting foam. Preparing graphene heat-conducting gasket comprising soaking graphene heat conducting foam into high molecular polymer, stacking multiple impregnated graphene heat conducting foam layer by layer, pressing, bonding, forming along the stacking direction, curing to obtain the graphene heat conducting block, preferably applying pressure to the multi-layer graphene heat conducting foam formed by bonding before curing, cutting graphene heat conducting block along the stacking direction to obtain graphene heat conducting gasket. Graphene heat-conducting gasket comprising multi-layer graphene heat conduction foam and high molecular polymer stacked along the thickness direction, where the graphene inside the graphene heat conduction foam is in orientation distribution, and the high molecular polymer is soaked in the graphene, the high molecular polymer comprising epoxy resin, phenolic resin, furfural resin, polyurethane, acrylic, polybutene and/or silicone, the polymer is organic silica gel, and the polymer comprising polydimethylcyclosiloxane, polydimethylsiloxane, α,ω-dihydroxypolydimethylsiloxane, dimethyldiphenylpolysiloxane, α,ω-dihydroxypolymethyl(3,3,3-trifluoropropyl)siloxane, cyanoalkoxysilane and α,ω-divinyl dimethicone.