▎ 摘　　要

NOVELTY - The film has a composite graphene heating film that is sequentially provided with a first flame-retardant non-woven fabric layer, a graphene heating sheet layer, and a second flame-retardant non-woven fabric layer from bottom to top. The graphene heating sheet layer is coated with graphene heating ink. The graphene heating sheet layer is sequentially provided with a flexible circuit board, a poly ethylene terephthalate intermediate layer and a polymide bottom film from the lower layer to the upper layer. The flexible circuit board, the poly ethylene terephthalate intermediate layer and the polymide bottom film are connected into one body by hot melt adhesive. USE - Composite graphene heating film with flame retardant effect. ADVANTAGE - The film effectively avoid the burning phenomenon of the composite graphene heating film due to internal factors and the high temperature of the external environment, and is suitable for scenes with strict requirements on the flame retardancy of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite graphene heating film. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the preparation process of the graphene heating sheet. (Drawing includes non-English language text)