While controlling foam, defoamer will also affect the performance of coatings. This article will explore the specific effects of defoamers on the performance of coatings from multiple perspectives.

Moderate defoamers can reduce the surface tension of coatings, improve their flowability, and make coatings easier to apply. However, excessive use may increase the viscosity of the coating and affect construction efficiency.

Some defoamer components may affect the drying speed and curing performance of coatings. For example, certain organosilicon defoamers may delay the drying time of coatings, but they can also enhance the hardness and wear resistance of coatings.

Defoamers can reduce defects such as pinholes and fish eyes on the surface of coatings, improving the smoothness and glossiness of coatings. This is particularly important for coating products that require high-quality appearance.

Choosing appropriate defoamers can enhance the durability and stability of coatings, enabling them to resist environmental erosion and extend their service life.

The impact of defoamers on coating performance is multifaceted, with both positive and potential negative effects. Therefore, when selecting and using defoamers, it is necessary to comprehensively consider their specific impact on coating performance.