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The types of primers commonly used for rusty metals are: 1. Zinc-rich primer 2. Epoxy primer 3. Zinc phosphate primer 4. Polyurethane primer 5. Red lead primer

If both anti-corrosion and wear resistance are required, polyurethane primer and epoxy primer can be used together: first apply epoxy primer as an anti-corrosion layer, and then apply polyurethane primer or topcoat to improve wear resistance and anti-aging performance.

Epoxy primer is one of the most popular types of automotive anti-corrosion primers. It is widely used in the automotive industry due to its excellent anti-corrosion performance and excellent adhesion. Epoxy primer is based on epoxy resin and has strong chemical resistance and waterproof ability.

Epoxy primer is the most common and widely used primer, especially for aluminum hulls. Epoxy primer has excellent corrosion resistance and adhesion, and can form a solid barrier on the aluminum surface to prevent the penetration of moisture and oxygen and prevent corrosion of the hull.

Concrete is a porous material with high water absorption. This means that when the paint is directly applied to its surface, it is easily absorbed by the concrete, resulting in uneven distribution of the paint and affecting the overall effect.

Anticorrosion primer is a coating used on metal surfaces. Its main function is to prevent metal oxidation and corrosion by forming a dense protective film to isolate air, moisture, salt and other corrosive substances from contact.

Polyurethane primers can maintain good construction performance at lower temperatures, so they are more convenient for construction in cold climates. Epoxy primers require higher temperatures to fully cure, which may require additional heating equipment in cold climates.