Why can't epoxy paint be used in outdoor steel structures?
Epoxy resin has poor weather resistance because epoxy resin is composed of at least two epoxy groups, and epoxy chains are easy to break under ultraviolet irradiation, resulting in the powdering of resin film. Therefore, epoxy anti-corrosion products can not be used for outdoor protection.Epoxy paint has excellent physical and mechanical properties, the most prominent is its strong adhesion to the metal, its resistance to chemicals and oil resistance is also very good, especially the alkali resistance is very good.
Epoxy paint has the advantages of good adhesion, tough film, corrosion resistance, rust resistance and moisture resistance. It is widely used as antirust primer for steel structure and antirust coating for interior steel structure.However, epoxy paint should not be used as topcoat for outdoor applications, that is, epoxy paint can not be irradiated by sunlight for a long time.
Epoxy paint has the advantages of good adhesion, tough film, corrosion resistance, rust resistance and moisture resistance. It is widely used as antirust primer for steel structure and antirust coating for interior steel structure.However, epoxy paint should not be used as a finish coat directly to households
Epoxy paint used as primer, iron red epoxy primer, epoxy zinc primer can be matched with acrylic polyurethane paint, fluorocarbon paint, etc. for outdoor weatherproof coating.
