Introducing epoxy zinc-rich primer: The ultimate solution for corrosion protection

As a leading expert in the field of pipeline systems, Haihao Group prides itself on mastering various pipeline surface coating technologies to ensure the highest standards of protection and durability. One such innovative solution in our arsenal is the epoxy zinc-rich primer.

Epoxy zinc-rich primer is formulated with epoxy resin, zinc powder (or aluminum paste), additives, and polyamide resin. It boasts a triple-action corrosion protection system, including cathodic protection, inhibition, and shielding, making it the preferred primer for corrosion prevention in steel structures exposed to atmospheric environments. Widely used and renowned for its exceptional performance, epoxy zinc-rich primer stands out as a versatile and high-performance coating solution.

pipeline products with epoxy zinc rich primer

Belonging to the realm of electrochemical corrosion prevention, epoxy zinc-rich primer owes its efficacy to the pivotal role played by zinc powder. With a lower potential than iron, zinc exhibits more active chemical characteristics, readily donating electrons to iron to protect it from corrosion.

This primer offers outstanding rust resistance, strong adhesion, quick drying at room temperature, and a high zinc content in the paint film, providing excellent cathodic protection and water resistance. It finds extensive applications in shipbuilding, bridges, containers, offshore oil drilling platforms, port facilities, and chemical equipment.

Different regions and functionalities necessitate specific epoxy zinc-rich primer film thicknesses. For instance, when used as a general primer, the film thickness typically ranges around 60μm. In contrast, for workshop component priming, it reduces to about 25μm. For outdoor steel structures and decorative anti-corrosion projects, the film thickness remains at 25μm.

Why can’t epoxy zinc-rich primer be used as a topcoat?

Epoxy zinc-rich primer exhibits excellent adhesion and corrosion resistance only when it directly contacts steel.

The primer is typically gray in color, lacks decorative properties, and has a matte finish with a rough film surface. In contrast, topcoats come in various colors, have a smooth and glossy appearance, and provide a rich coating.

The film formed by epoxy zinc-rich primer is less dense compared to topcoats, making it prone to blistering and zinc rust formation upon prolonged exposure to water.

Epoxy zinc-rich primer has poor weather resistance and cannot withstand long-term exposure to ultraviolet radiation outdoors. To protect the primer, it must be coated with a weather-resistant topcoat.

At Haihao Group, we understand the importance of corrosion protection in pipeline systems. With our expertise in epoxy zinc-rich primer application, we ensure that our clients receive the highest quality products tailored to their specific needs, guaranteeing long-lasting protection and peace of mind.