▎ 摘　　要

NOVELTY - Preparing graphene heat dissipation film comprises (a) dissolving graphite powder, dispersant and defoamer in water, shearing and homogenizing for the first time to obtain graphene dispersion, homogenizing after the graphene dispersion is mixed with the resin and film-forming agent for the second time to obtain a graphene slurry, (b) coating the graphene slurry on the surface of the flexible substrate by a doctor blade coating method to obtain a graphene film and (c) removing the flexible substrate after the graphene film is dried by a directional treatment method. USE - The method is useful for preparing graphene heat dissipation film. ADVANTAGE - The method: has significantly improved heat dissipation performance; solves the technical defects of the prior art that the heat dissipation film is difficult to take into account a good heat dissipation effect; and is easy to process and economical.