Huaren Corrosion Resistant 2K Primer

Introducing our Epoxy Zinc-Rich Primer, a high-performance metal paint that combines the corrosion protection properties of zinc with the durability and adhesion of epoxy resin.

Basics of Epoxy Zinc Rich Primers

Epoxy zinc rich primers belong to the family of zinc rich coatings that are applied to protect ferrous surfaces from corrosion. These primarily work as sacrificial cathodic protection products. Because zinc is anodic to steel, these particles corrode first, protecting the ferrous substrate beneath the primer from corrosion.

The corrosion product is a powdery zinc oxide that exposes the remaining zinc coating for further oxidation, providing protection continuity. Therefore, zinc-based primers provide sacrificial cathodic protection for the steel substrate.

Reduced zinc epoxy primers have around 55% zinc by weight in the cured primer film, whereas zinc-rich epoxy primers have around 80 to 85% zinc by weight.

Organic Versus Inorganic Zinc Rich Primers

A zinc-rich epoxy primer coating is an organic coating and necessarily requires a top coating for durable and reliable heavy-duty protection. 

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