▎ 摘　　要

NOVELTY - The method involves coating graphene oxide slurry on the surface of a base material, baking the graphene oxide slurry into a graphene oxide film, and stripping and rolling (S1) the base material of the graphene oxide film. The thermal reduction treatment is carried out (S2) on the rolled graphene oxide film to obtain a graphene film. The Joule thermal graphitization treatment is carried out (S3) on the graphene film. The rolling treatment is performed (S4) on the graphene film subjected to the thermal graphitization treatment of the lugs to obtain the heat-conducting film. The graphene oxide slurry is coated on the surface of the base material by using a coating machine. The graphene oxide slurry coated on the surface of the base material is baked to form a film, and the film is peeled from the base material, and the film is rolled. USE - Method for preparing heat-conducting film. ADVANTAGE - The method enables realizing roll-to-roll production, thus improving production efficiency and reducing production cost. The method ensures that the graphene heat conducting film has density close to graphite, improves mechanical property, and controls the heat conducting coefficient. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for preparing heat-conducting film. (Drawing includes non-English language text). Step for coating graphene oxide slurry on the surface of a base material, baking the graphene oxide slurry into a graphene oxide film, and stripping and rolling the base material of the graphene oxide film (S1) Step for carrying out thermal reduction treatment on the rolled graphene oxide film to obtain a graphene film (S2) Step for carrying out Joule thermal graphitization treatment on the graphene film (S3) Step for performing rolling treatment on the graphene film subjected to the thermal graphitization treatment of the lugs to obtain the heat-conducting film (S4)