Waterborne Anti-rust Additive - Flash Rust Inhibitor
Release Time:
2026-03-14
Compared with solvent-based coatings, waterborne coatings have significant advantages in safety and environmental protection. However, the occurrence of flash rust after coating greatly limits the application of waterborne coatings. Flash rust refers to the electrochemical corrosion phenomenon that occurs during the drying process of waterborne coatings. When waterborne coatings are applied to the surface of carbon steel, the water and ions contained in them can act as an electrolyte solution. Ferrite and cementite on the surface of carbon steel can serve as micro-anodes and micro-cathodes respectively, thus forming a micro-corrosion cell. Due to the corrosion reaction, the continuously dissolved iron ions eventually accumulate on the surface of the paint film and form rust spots. The appearance of flash rust will seriously affect the performance of the paint film, such as: reduced adhesion between the paint film and the substrate, seriously reduced protection performance of the paint film on metals, and affected appearance.
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