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How to ensure that the anti-corrosion coating of the product does not peel off?

Abstract: 文章讨论了防腐涂料剥离和起皮脱落的原因及其预防措施。涂层剥离通常是由于表面张力高于粘附强度，可能由以下因素引起：表面处理不良、涂层之间有污垢、喷漆间隔时间过长或涂料与其他涂料的不相容。起皮脱落常因表面处理不当、污垢、固化时间过长或前层涂层表面有粉末而发生。剥离和起皮的区别在于，剥离涉及涂层从基材上坚硬地剥离，而起皮则是涂层开裂后边缘从基材上卷起。

Peeling is mainly due to surface tension higher than adhesion strength or bond strength, including peeling from the bottom or peeling between coatings. The possible reasons are as follows:

1. Poor surface treatment;

2. Dirt between coats;

3. Exceeding the maximum spray interval;

4. The adhesion of the paint itself is weakened (incompatible) by additives of other paints.

Peeling is usually due to poor surface preparation, contamination such as dust, grime, grease or chemicals from the substrate or coating, too long a cure time between coats, or the presence of dirt on the surface of a previous coat caused by powder. Flaking is similar to spalling, except that the peeled coating is hard and brittle and can be peeled from the substrate. Once the coating cracks, the edges will curl away from the substrate, which can cause peeling.


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