What is Automotive Primer?
1 Answers
Automotive primer is the first layer of paint directly applied to the surface-treated metal components. As the foundational layer of the entire coating system, it is designed to have excellent adhesion to the substrate and good compatibility with the intermediate or top coats applied above. Additionally, it must possess outstanding properties such as corrosion resistance, rust prevention, oil resistance, chemical resistance, and water resistance. Solvent-based automotive primers primarily use nitrocellulose resin, epoxy resin, alkyd resin, amino resin, or phenolic resin as the base material, with iron oxide red, titanium white, carbon black, and other pigments and fillers as coloring agents. The application methods include spraying and dip coating.