▎ 摘　　要

NOVELTY - A point, line, plane three-dimensional carbon material composite thermal conductive silica gel comprises surface-modified graphene, surface-modified carbon nanotubes and surface-modified carbon nanoparticles. The surface-modified graphene, surface-modified carbon nanotubes and surface-modified nanoparticles have mass ratio of 1:0.5-2:0.5-4. The surface-modified graphene is obtained by treating graphene with concentrated acid after ball-milling. The surface-modified carbon nanotubes are obtained by treating carbon nanotubes with concentrated acid. USE - Point, line, plane surface three-dimensional carbon material composite thermal conductive silica gel (claimed). ADVANTAGE - The point, line, plane three-dimensional carbon material composite thermal conductive silica gel has excellent solubility, dispersibility and thermal conductivity. DETAILED DESCRIPTION - A point, line, plane three-dimensional carbon material composite thermal conductive silica gel comprises 0.1-30 wt.% surface-modified graphene, 0.1-30 wt.% surface-modified carbon nanotubes and 0.1-30 wt.% surface-modified carbon nanoparticles. The surface-modified graphene, surface-modified carbon nanotubes and surface-modified nanoparticles have mass ratio of 1:0.5-2:0.5-4 and mass fraction of 10%. The surface-modified graphene is obtained by treating graphene with concentrated acid after ball-milling. The surface-modified carbon nanotubes are obtained by treating carbon nanotubes with concentrated acid. The surface-modified carbon nanoparticles are obtained by treating carbon nanospheres with concentrated acid. The concentrated acid comprises 30-69.2 (preferably 50-60%) %mass concentrated nitric acid, 70-98.5 (preferably 90-95) %mass concentrated sulfuric acid and/or 20-37 (preferably 30-35) %mass concentrated hydrochloric acid. An INDEPENDENT CLAIM is included for preparation of point, line, plane three-dimensional carbon material composite thermal conductive silica gel.