What are the common epoxy primers?

What are the common epoxy primers?

Epoxy primer is a commonly used anti-corrosion coating, usually used as the base layer of the paint system. It has good adhesion, excellent corrosion resistance, wear resistance and weather resistance. Epoxy primers are mainly composed of epoxy resin, curing agent and other fillers, and are divided into two types: solvent-based and water-based. Epoxy primers have a variety of uses, such as anti-corrosion and decoration of materials such as steel and concrete. During the coating process, epoxy primers can be used in conjunction with topcoats to obtain better decoration and protection effects.

Common epoxy primers on the market are:

1. Epoxy zinc-rich primer: With zinc powder as the main anti-rust pigment, it has excellent anti-rust performance and can be used in medium and high corrosion environments. It is used for anti-corrosion coatings in C3, C4, and C5 atmospheric environments, such as industrial areas, chemical plants, coastal areas, oceans, power plants, etc. Steel structures, machinery, bridges, containers, and buildings are anti-corrosion and weather-resistant coatings.

2. Epoxy zinc yellow primer: With epoxy resin as the main film-forming substance, its anti-rust property is weaker than that of zinc-rich primer, but it has good toughness, adhesion, corrosion resistance and other characteristics. Advantages also include easy coating, fast drying speed, hard coating, full color, etc. It is suitable for special substrates such as stainless steel, aluminum plate, electrolytic plate, galvanized plate, etc.

3. Epoxy zinc phosphate primer: It is mainly composed of epoxy resin and zinc phosphate and has excellent corrosion resistance, wear resistance and weather resistance. After the coating of epoxy zinc phosphate primer dries, it can form a hard protective film on the metal surface, which effectively resists the influence of various chemicals and harsh environment, thereby extending the service life of the metal. In addition, epoxy zinc phosphate primer also has good adhesion and construction performance, can be used with various topcoats, can be used in medium or severe industrial corrosion environment, and is widely used in shipbuilding, petrochemical, power and other fields.

4. Epoxy micaceous iron intermediate paint: It is composed of epoxy resin, micaceous iron oxide, anti-rust pigment, curing agent and other additives. It is mainly used as an efficient shielding intermediate paint. It has excellent resistance to penetration of corrosive media such as acids, alkalis, and salts, excellent anti-rust performance and weather resistance, and good adhesion. It can maintain its performance for a long time in various complex environments. The coating method of epoxy micaceous iron intermediate paint is simple and easy, and can be used in conjunction with various topcoats and primers to obtain better anti-corrosion effects. The use of epoxy micaceous iron intermediate paint can greatly extend the service life of metal materials, while reducing the frequency of maintenance and replacement, thereby saving a lot of costs for enterprises. Due to its excellent performance and wide range of applications, epoxy micaceous iron intermediate paint has become an indispensable part of the modern coatings industry.

When selecting epoxy primers, we need to consider their characteristics, uses, special requirements of actual use scenarios, and specific needs. By deeply understanding and comparing different products, we can select the most suitable epoxy primer to provide reliable anti-corrosion protection for various projects and projects.