▎ 摘　　要

NOVELTY - The graphene composite film has a graphene electric heating film layer (20) is mounted between an insulating and thermally conductive layer (10) and an insulating and thermally insulating layer (30). The insulation layer includes heat-resistant resin materials such as heat-resistant rubber, polyimide, aramid, polyester, polyethylene, and polypropylene. An electrode (22) is arranged at both ends of the graphene electric heating film layer (20). The insulating and thermally conductive layer is a heat-resistant resin filled with highly thermally conductive ceramic particles. The high heat-conducting ceramic particles comprise aluminum nitride (AlN) and aluminum oxide (Al2O3), silicon carbide (SiC), silicon dioxide (SiO2), silicon nitride (Si3N4) of boron nitride (BN) and diamond powder. The graphene composite membrane is attached to a composite material substrate (40) through a glue film or an adhesive is epoxy resin adhesive film or adhesive, polyurethane adhesive film or adhesive. USE - Graphene composite film for preventing deicing. ADVANTAGE - The thermal damage of electric heating to the composite material is reduced, and the anti-icing and deicing functions are stably realized under the condition that the mechanical property of the composite material matrix and the design requirement of an airplane are not influenced. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing a composite structural element with anti-icing function; and (2) a composite structural portion having an anti-icing function. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a composite structural portion having an anti-icing function. (Drawing includes non-English language text) Thermally conductive layer (10) Graphene heating film layer (20) Electrode (22) Insulating and thermally insulating layer (30) Composite material substrate (40)