How Polyamide Wax Additives Improve Flow and Degassing in Powder Coatings

Powder coatings are widely used for their environmental benefits and durable finishes. However, one recurring challenge for formulators is achieving a smooth, defect-free surface. Surface pinholes, craters, and poor leveling often result from trapped gases or poor flow dynamics during curing. Polyamide wax additives are the ideal solution to these issues.

Polyamide wax functions as both a degassing aid and a multifunctional surface modifier. During curing, it promotes the release of trapped air and volatile residues from the coating film, preventing defects like pinholes or micro-bubbles. At the same time, it enhances melt flow, allowing better surface leveling and gloss development.

Unlike standard PE waxes, polyamide wax has a higher melting range and polarity, which improves its compatibility with epoxy-polyester and pure polyester powder coating systems. It provides slip and scratch resistance without reducing intercoat adhesion. The balanced molecular weight of polyamide wax ensures even distribution throughout the cured film, giving a fine, uniform finish.

In addition to degassing, polyamide wax contributes to surface hardness and abrasion resistance. It improves coating appearance and extends durability against handling and chemical exposure—key for metal furniture, automotive parts, and architectural applications.

For formulators seeking to simplify production, polyamide wax also reduces the need for multiple additives (separate degassing agent, flow modifier, slip enhancer), providing a more efficient one-step solution.

Tianshi offers customized polyamide wax grades designed specifically for powder coatings, ensuring excellent flow control and smooth surface appearance. Our products have proven performance in both matte and glossy systems.

👉 Want defect-free coatings with improved efficiency? Contact us to learn more about our high-performance polyamide wax additives for powder coatings.