In the production and construction process of the coating industry, the generation of foam is a common and thorny problem. Foam in the coating not only affects the appearance and performance of the coating, but also reduces production efficiency and increases production costs. Therefore, the coating industry defoamer plays a vital role in the coating industry. It can effectively control and eliminate foam and improve the quality and production efficiency of the coating.
The surfactants such as dispersants, wetting agents, emulsifiers, etc. used in the coating formula reduce the surface tension of the system while also reducing the free energy required for foam formation, making the coating more likely to foam. Foam will hinder the dispersion of pigments and fillers, making it difficult for the production process to proceed smoothly and reducing production efficiency. The working principle of the coating industry defoamer is mainly based on its destruction of the foam liquid film. The active ingredients in the defoamer can quickly penetrate into the foam liquid film, reduce the surface tension of the liquid film, make the liquid film thinner and eventually break. In addition, the defoamer can also form a protective film by adsorbing on the surface of the foam to prevent further generation of foam.
