Zinc Epoxy Powder Primer for Better Corrosion Protection

PPG Primeron zinc epoxy powder primer is formulated with an optimized amount of zinc, providing better transfer efficiency than standard zinc-rich primers and corrosion protection that meets rigorous ISO C5 corrosivity specifications for use in high humidity and aggressive environments.

The primer has a much lower specific gravity than standard zinc-rich primers (2.0 vs. 3.6), making it less dense and easier to apply. With a transfer efficiency of 85%, about half as much product is needed compared to a standard zinc-rich primer, saving costs and enhancing sustainability. The primer is made without solvents that release volatile organic compounds (VOCs).

Additional benefits include exceptional edge, face and scribe corrosion resistance, and excellent adhesion on both smooth and blasted steel for a strong bond that resists peeling, chipping and degradation, the company says.

In lab testing, the primer surpassed 10,000 hours of salt spray performance on blasted steel. It is engineered for use on steel, hot-dip galvanized steel, metallized steel and aluminum and is suitable for a range of applications, including trailers, gas tanks, pipes, automotive parts and machinery.

The sustainability benefits include reduced waste and material usage. The primer can be gelled (partially cured), or used in a two-coat, one-bake process, yielding quicker, more sustainable and energy-efficient finishing that reduces greenhouse gas emissions by up to 50%.

PPG Primeron Optimal zinc epoxy primer is part of the company’s new Primeron powder primer series, designed to provide high corrosion resistance for a range of applications and specific requirements. The product portfolio includes solutions in epoxy, polyester and epoxy polyester chemistries.