The application of epoxy resin in coatings accounts for a large proportion, and it can be made into varieties with various characteristics and uses. Its commonality:
1. Excellent chemical resistance, especially alkali resistance.
2. The paint film has strong adhesion, especially to metal.
3. Has good heat resistance and electrical insulation.
4. The paint film has better color retention.
However, the bisphenol A epoxy resin coating has poor weather resistance, and the paint film is easy to powder and lose gloss in the outdoors, and it is not suitable for outdoor coatings and high-decorative coatings. Therefore, epoxy resin coatings are mainly used as anti-corrosion paints, metal primers, and insulating paints, but coatings made of heterocyclic and cycloaliphatic epoxy resins can be used outdoors.
