Defoamer

Defoamers are primarily used to eliminate foam generated during production, mixing, stirring, or application. Foam not only affects the flowability and workability of coatings but can also lead to defects such as pinholes and craters on the coating surface, thus impacting the appearance quality and final performance of the coating. Defoamers effectively reduce foam stability, preventing foam from persisting in the coating and ensuring the uniformity and smoothness of the coating.

The working principle of defoamers is mainly to reduce the surface tension of the foam liquid film, altering the interfacial properties of the foam, causing bubbles to burst and rapidly coalesce, thereby eliminating foam. This process inhibits foam formation, accelerates foam dissipation, and prevents bubbles from persisting in the coating for extended periods, thus avoiding unevenness defects on the coating surface. In this way, it helps improve production efficiency, reduce waste and defective products caused by foam during production, and simultaneously ensures the surface quality and workability of the coating.

Defoamers are widely used in water-based coatings, solvent-based coatings, inks and other fields. Especially in high-viscosity systems or production processes that are prone to foaming, the generation of foam is often unavoidable. The addition of defoamers can effectively control the generation and persistence of foam, ensuring that the coating can be applied smoothly and evenly during the coating process, and avoiding defects such as bubbles and holes on the coating surface.