▎ 摘　　要

NOVELTY - High thermal conductivity graphene radiating film useful for Fifth Generation communication device, comprises a protective film layer, a graphene layer, a metal foil layer, an aluminum-magnesium alloy layer, an ultra-thin thermally conductive silica gel layer, and a release film layer sequentially arranged from top to bottom. The graphene layer and the aluminum-magnesium alloy layer are respectively formed on the surface of the metal foil layer by coating. USE - The film is useful for Fifth Generationcommunication device. ADVANTAGE - The film achieves an efficient multi-directional heat dissipation effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the radiating film, comprising (a) dissolving graphite powder, dispersant and defoaming agent in water, shearing, homogenizing for the first time to obtain graphene dispersion, mixing the graphene dispersion with the resin and the film-forming agent, homogenizing for the second time to obtain a graphene slurry, and coating graphene slurry on a surface of a metal foil layer, and drying to obtain a graphene layer, (b) mixing aluminum-magnesium alloy powder and resin to obtain an aluminum-magnesium alloy slurry, coating the aluminum-magnesium alloy slurry on the other surface of the metal foil layer, and drying to obtain an aluminum-magnesium alloy layer, (c) coating the surface of the aluminum-magnesium alloy layer with paste-type thermal silica gel, attaching a protective film on the surface of the graphene layer, and attaching a release film on the surface of the paste-type thermal silica gel, and (d) calendering and bonding, and vulcanizing to make the paste material of thermally conductive silica gel completely thermally cured to form an ultra-thin thermally conductive silica gel layer.