▎ 摘　　要

NOVELTY - Preparing graphene heat conducting film comprises (i) coating an oxidized graphene slurry on the surface of the substrate; (ii) drying the surface layer of the coated graphene oxide slurry; (iii) setting holes and/or grooves not penetrating through the surface layer on the dried surface layer, and continuing to coat the graphene oxide slurry on the dried surface layer; (iv) repeating the steps (i) to (iii), drying all the graphene oxide slurry to obtain the graphene oxide film; and (v) performing heat treatment to the graphene oxide film to obtain the graphene heat conducting film. USE - The method is useful for preparing graphene heat conducting film. ADVANTAGE - The graphene heat conducting film has a layered structure, the prepared thickness and number of layers are controllable and will not be dispersed to form a whole structure. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a graphene heat conducting film, is prepared as mentioned above; and a method for preparing heat conducting gasket, comprising dipping the graphene heat conducting film in the adhesive, stacking the dipped graphene heat conducting film into blocks, solidifying the obtained block and cutting the block along the stacking direction to obtain the heat conducting gasket