THE EFFECT OF WAX EMULSION ON THE PERFORMANCE OF CHROMIUM-FREE ANTI-FINGERPRINT PASSIVATION FILM
Abstract
Limited research exists on the passivation film of anionic waterborne polyurethane resin, particularly regarding strategies to enhance its performance. This study investigates the influence of the wax emulsion’s particle size and concentration on the structure, interfacial behavior, corrosion resistance, friction resistance, and adhesion properties of the passivation film. Findings reveal that using a 450-nm wax-emulsion particle size and a 2 % addition yield a composite passivation film characterized by a high surface gloss, low roughness, and exceptional friction resistance. Notably, while maintaining adhesion, the corrosion resistance is improved, thereby enhancing the overall performance of the passivation film. This research sheds light on the effects of wax emulsion on the performance of passivation films, providing valuable insights for optimizing anionic waterborne polyurethane-resin passivation films in future studies.
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