▎ 摘　　要

NOVELTY - Preparing graphene foam block comprises arranging the fiber array on the substrate spreading the fiber array flat on the substrate along the coating direction, coating the graphene oxide slurry along the laying direction, pulling up the fiber array perpendicular to the coating direction for drying treatment, repeating the steps of coating, pulling up and drying to obtain graphene oxide blocks, and heat treating the graphene oxide block to obtain graphene foam block. USE - The method is useful preparing graphene foam block. ADVANTAGE - The fiber has no opening operation during the fiber insertion process to avoid damage to the structural stability, achieves mechanical enhancement effect on the graphene heat conduction gasket, ensures that its structure will not be damaged, and meets requirements for preparing gaskets with various thicknesses and sizes. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: graphene foam block, comprising a multilayer graphene layer and a fiber array, where the multilayer graphene layer is oriented along a direction perpendicular to the fiber array, the thickness of the graphene foam block is 30-250mm, preferably 50-150mm, the distance between the fibers of the fiber array is 1-20 mm, preferably 5-10 mm, the diameter of the fibers of the fiber array is 5-50 microns, preferably 8-20 microns, the fibers of the fiber array are at least one of graphite fibers, graphene fibers, carbon nanotube fibers, carbon fibers and polyolefin fibers, and the fibers of the fiber array are single fibers or/and fiber bundles; preparing a heat conducting sheet, comprising cutting graphene foam block body along the direction parallel to the fibers to obtain heat conducting sheet, where the cutting method is at least one of wire cutting, laser cutting, ultrasonic cutting, blade cutting, freezing cutting, vibration-cutting and ultrasonic-freezing cutting; heat conducting sheet, comprising a multilayer graphene layer and a fiber array, where the multilayer graphene layer is oriented along a direction perpendicular to the fiber array, the thickness of the heat conduction sheet is ≮ 0.3 mm, preferably 0.5-1 mm; preparation method for a graphene thermal pad, comprising immersing the heat conducting sheet into the high molecular polymer, and solidifying to obtain graphene thermal pad, immersing high molecular polymer in the heat conducting sheet by vacuum impregnation, normal pressure impregnation or high pressure impregnation, where the vacuum degree of vacuum impregnation is 0.095-0.099MPa, the pressure of high-pressure impregnation is 0.5-10 MPa, the curing is heat curing or normal temperature curing, the curing is heat curing, the curing temperature is 60-150℃℃, the polymer is at least one of epoxy resin, phenolic resin, furfural resin, polyurethane, acrylic resin, polybutene and organic silica gel, preferably organic silica gel. The polymer is at least one of polydimethylcyclosiloxane, polydimethylsiloxane, α,ω-Dihydroxypolydimethylsiloxane, Polydiphenylsiloxane, α,ω-dihydroxypolymethyl(3,3,3-trifluoropropyl)siloxane, cyanosiloxysilane and α,ω-diethylpolydimethylsiloxane; graphene thermal pad, comprising heat conduction sheet and high molecular polymer immersed in the graphene heat conduction gasket, where the content of the high molecular polymer is 10-60 wt.%, and the content of the high molecular polymer is 20-50 wt.%; and arrangement device for arranging the fiber array on the base material, comprising a base material and a pull rod, the base material and pull rod are correspondingly provided with multiple holes, fiber from the base material or/and pull rod one hole or multiple holes. The additional hole or holes of the base material and/or the tie rod are pierced to form a fiber array.