▎ 摘 要
NOVELTY - A graphene composite film comprises graphene and polyimide in a mass ratio of 10-50:100. USE - Graphene composite film. ADVANTAGE - The graphene polyimide composite film has improved electrical conductivity, strength and thermal stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of graphene composite film, which involves uniformly dispersing modified graphene in organic solvent, stirring, ultrasonically processing, adding pyromellitic dianhydride and dimethylacetamide solvent, polymerizing at 40-60 degrees C and preparing obtained product into thin film.