What are the characteristics of unsaturated polyester coatings?
Unsaturated polyester coatings are also a coating that has developed rapidly in recent years, and can be divided into two categories: air-drying unsaturated polyesters and radiation-curing (light-curing) unsaturated polyesters. The main advantage is that it can be made into a solvent-free coating, a thick paint film can be obtained in one coating, the coating temperature is not high, the paint film has a good decorative effect, the paint film is tough and wear-resistant, and it is easy to maintain.
The disadvantage is that the shrinkage rate of the paint film is large during curing, and the adhesion to the substrate is prone to problems. Air-dried unsaturated polyester generally requires polishing, and the process is cumbersome. Radiation-curable unsaturated polyester has high requirements for coating equipment and is not suitable for small-scale production. Unsaturated polyester paint is mainly used for furniture, wood floors, metal anti-corrosion, etc.
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