DuPont® metallic-effect powder coatings are designed to provide application and physical performance properties equivalent to non-metallic formulations.
Bonded metallic offers additional advantage during reclaiming applications. Certain limitations do exist when using metallic-containing powders:
- Reclaiming dry-blended metallic powders require careful monitoring of reclaim-to-virgin ratios in order to maintain consistency.
- Metallic-effect pigments (brass and copper) oxidize and darken upon prolonged or elevated temperature exposure. Avoid overbaking or curing at elevated temperatures.
- Exterior exposure or high traffic and handling can cause the soft metallic-effect pigments to erode and discolor. A clear topcoat is recommended for oxidizing atmospheres, harsh environments, or high-wear uses.
- Independent laboratory testing has proven that the minimum explosive concentration (MEC) of DuPont® Alesta® Metallic-effect powders is the same as non-metallic powders. The MEC range is 0.05-0.07 oz./cu.ft.
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