▎ 摘　　要

NOVELTY - Negative ion flexible graphene electrothermal composite material comprises 0.01-10 pts. wt. graphene, 0.01-10 pts. wt. anion powder, 30-50 pts. wt. flexible resin and 0.01-0.5 pts. wt. dispersant. USE - Negative ion flexible graphene electrothermal composite material used for preparing anion flexible graphene electric heating composite film for product for physiotherapy. ADVANTAGE - The negative ion flexible graphene electrothermal composite material is simple to prepare, and has good flexibility, stable heating, high conductivity and high infrared heat conversion efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) an anion flexible graphene electrothermal composite film, which comprises negative flexible graphite heating composite material; and (2) a method for preparing an anion flexible graphene electrothermal composite film, which involves heating composite material on the release substrate to form a composite conductive film, drying and curing the composite conductive film after peeling off into a roll, obtain the anion-conductive flexible graphene film, where the thickness of the ion conductive flexible graphene film is 25-100 mu m, preferably 25-75 mu m, more preferably 30-50 mu m, The release substrate comprises a polyethylene release film, polyethylene terephthalate release film, oriented polypropylene, polycarbonate film, a poly(methyl methacrylate)film, biaxially-oriented polypropylene parting film, Tpx release film, polyvinyl chloride film, polytetrafluoroethylene release film, a polyethylene terephthalate release film or composite release film.