▎ 摘　　要

NOVELTY - Graphene conductive composite membrane comprises graphene stereo network structure and elastic filler dispersed in graphene stereo network structure, where graphene stereo network structure comprises interconnected graphene sheets and the gap between graphene sheets is not filled by the elastic filler so the graphene three-dimensional network structure forms contact site when pressed. USE - Used as graphene conductive composite membrane. ADVANTAGE - The graphene conductive composite membrane electrical resistance can be automatically adjusted according to the thickness of film when the film is pressed, power can be conveniently adjusted when graphene conductive composite film is applied to constant voltage electric heating product. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing conductive composite membrane, comprising providing graphene raw material and an elastic filler raw material, dissolving graphene raw material and elastic filler raw material in a solvent to obtain mixed slurry, forming mixed slurry into a pre-formed composite film by a coating process and drying pre-formed composite film; and (2) electric heating film, comprising graphene conductive composite film, electrode and an insulating protective film sequentially arranged on a surface of graphene conductive composite film.