Moisture-resistant polyester enameled wire and preparation method thereof

The invention discloses a moisture-resistant polyester enameled wire and a preparation method thereof; a small amount of silicone polyester resin is added into polyester paint, and when the polyester paint is baked to form a film after being painted, due to the low surface tension of the silicone polyester resin, the silicone polyester resin is greatly migrated to a painted surface layer before being cured, so that a surface moisture-resistant layer is formed; meanwhile, the moisture repellency of PE or PP micro powder is utilized, so that the water absorption of the paint film is reduced; particularly, after surface silanization modification, the binding force with paint film molecules is stronger, and meanwhile, the influence of moisture on the working performance can be further prevented; and the moisture-resistant polyester enameled wire prepared by the method is stable in performance under the condition of damp-heat aging, and has working stability under the condition of high temperature and high humidit