▎ 摘　　要

NOVELTY - Polyvinyl alcohol-organic phosphonic acid-graphene base film, comprises polyvinyl alcohol and organic phosphonic acid-graphene hybrid, and prepared by polyvinyl alcohol and organic phosphonic acid-graphene hybrid aqueous dispersion, where the organic phosphonic acid-graphene hybrid is obtained by drying organic phosphonic acid and aqueous dispersion of graphene micro-sheet. USE - The film is useful in the field of automobile parts, household appliances and electronic components. ADVANTAGE - The film has super-high heat conductivity coefficient and good flame-retardant performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the base film, comprising (i) adding the organic phosphonic acid, graphene and water into the ball mill, ball milling to obtain organic phosphonic acid-graphene hybrid water dispersion, freezing and drying to obtain the organic phosphonic acid-graphene hybrid, and (ii) ultrasonically dispersing the organic phosphonic acid-graphene hybrid in water, adding polyvinyl alcohol, preparing polyvinyl alcohol mixed solution, mechanically stirring uniformly, heating at 80-100 degrees C, continuously stirring for 10-14 hours, scraping the mixed solution, and drying; and (2) polyvinyl alcohol-organic phosphonic acid-graphene multilayer film, comprising polyvinyl alcohol-organic phosphonic acid-graphene base film and graphene layer are alternately arranged in turn.