▎ 摘　　要

NOVELTY - The utility model claims a double-layer heat-resistant PET protective film, comprising a PET protective film main body, two sides of the PET protective film main body are fixedly connected with a heat-resistant protective layer, the heat-resistant protective layer comprises a heat-conducting silica gel layer; the inner part of the heat conducting silica gel layer is filled and fixed with a magnesium oxide high temperature resistant layer and a graphene heat conducting layer; between the magnesium oxide high temperature resistant layer and the graphene heat conducting layer is filled with EPP heat resistant foam layer. The device through the heat conducting silica gel layer, magnesium oxide high temperature resistant layer and graphene heat conducting layer, effectively enhances the heat resistance and fast radiating performance of the PET protective film main body, at the same time, enhances the scratch resistance and anti-pressure loss, through the silicon film; a heat conducting aluminium foil layer and a through hole, further enhancing the radiating effect of the PET protective film main body; the heat-resistant effect is greatly enhanced, which is good for prolonging the service life of the device; through the arc cavity, EPP heat-resistant foam layer and through groove, further enhancing the heat-resistant and shock-proof protection of the PET protective film main body.