Efficient heat-dissipation film-coated color plate and preparation process thereof

The invention relates to the field of plates for shells of household appliances, and particularly discloses an efficient heat dissipation film-coated color plate and a preparation process thereof. The first chemical treatment layer and the second chemical treatment layer are located on the two sides of the substrate respectively, the heat bonding layer and the composite film layer are located on the first chemical treatment layer, the back paint layer is located on the second chemical treatment layer, and the heat bonding layer makes contact with the first chemical treatment layer; the composite film layer sequentially comprises a PVC film, a graphene film and a PET film, and the PVC film is in contact with the heat bonding layer; the graphene film is prepared from graphene oxide, glass fibers and carbon fibers in the mass ratio of 1: (0.3-0.6): (0.2-0.5). The efficient heat dissipation film-coated color plate has the advantages of being high in heat conductivity coefficient, good in heat dissipation effect a