▎ 摘　　要

NOVELTY - A graphene-polyimide resin thermally conductive composite material has a thermal conductivity of 14-20 W/(m.K) along the material axis, and is obtained by (i) dispersing 0.1-0.5 part mass expanded graphite in 100-150 parts mass N-methylpyrrolidone and reacting at 140-160 degrees C for 5-10 hours, centrifuging obtained dispersion by ultrasound, removing the supernatant, suction filtering using N-methyl-2-pyrrolidone, washing with water and ultrasonically processing, and freeze-drying to obtain graphene powder, (ii) placing obtained graphene powder in a plasma-enhanced chemical vapor deposition system device, vacuuming, heating to 500-700 degrees C, passing a carbon source gas, turning on the plasma source for vertical growth of graphene, cooling to room temperature of 20-25 degrees C to obtain a sample of vertical graphene grown on the graphene surface and passing inert protective gas, and (iii) immersing the obtained sample in a polyimide solution, depositing and stacking by suction filtration. USE - Graphene-polyimide resin thermally conductive composite material is used for producing carbon composite material. ADVANTAGE - The graphene-polyimide resin thermally conductive composite material has improved thermal conductivity and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-polyimide resin thermally conductive composite material.