Composite anti-fouling anti-ultraviolet heat insulation polyester film and preparation method thereof

The invention provides a composite anti-fouling anti-ultraviolet heat insulation polyester film and a preparation method thereof, the composite anti-fouling anti-ultraviolet heat insulation polyester film comprises a modification layer, a metal coating layer, a heat insulation layer and a core layer, the heat insulation layer comprises an upper heat insulation layer and a lower heat insulation layer, and the modification layer, the metal coating layer, the upper heat insulation layer, the core layer and the lower heat insulation layer are sequentially arranged from top to bottom. Through function optimization, on the basis that the thin film has heat insulation and heat preservation, the antifouling property is compounded, and the thin film not only has high super-hydrophobic property, but also has excellent super-oleophobic property. 发明提供一种复合型抗污防紫外隔热保温聚酯薄膜及其制备方法，包括修饰层、金属镀膜层、隔热保温层和芯层，所述隔热保温层包括上隔热保温层和下隔热保温层，所述修饰层、金属镀膜层、上隔热保温层、芯层和下隔热保温层从上到下依次设置。本发明通过功能优化，在薄膜具备隔热保温的基础上，复合防污性能，薄膜不仅具有较强的超疏水性能，还具有优异的超疏油特性。