To let you know more about silicone defoamer
In industrial production processes such as sewage treatment, paper making, oil field, rubber, steel rolling, power plant desulfurization, industrial cleaning, etc., if there is a large amount of foam, it is not only inconvenient to operate and waste equipment capacity, but also affects product quality. Therefore, the foam in the production process needs to be controlled effectively. Generally, foam can be eliminated by physical methods such as high-speed centrifugation, pressure reduction and ultrasound. However, in the case of increasing scale of industrial production and higher production efficiency, new and more effective methods are needed to eliminate continuously generated foam quickly and effectively in the shortest possible time. (Silicone defoamer)
The active ingredient formed by dimethyl silicone oil and fumed silica in the silicone defoamer is added to the foam system, and the foam formation is inhibited due to the low surface activity of the active ingredient, which is quickly distributed on the surface of the liquid. On the other hand, the active ingredients of silicone defoamer diffuse on the surface of the foam elastic film, further diffusion and penetration on the surface of the film, so that the film wall quickly thins, which destroys the balance and stability of the foam system, and the foam is also strongly pulled by the surrounding liquid with high surface tension, thus leading to bubble rupture.Insoluble in the system of defoamer molecules re-enter the surface of another layer of foam film, and so on, all foam is completely destroyed.
At present, the varieties and models of silicone defoamers are more, with different performance. Generally can be divided into oil (paste) type silicone defoamer, solution type silicone defoamer, emulsion type silicone defoamer, solid type and modified silicone oil type silicone defoamer.
Silicone defoamer not only has a good defoaming and defoaming effect, but also has a small amount, good chemical inertness, and can play a role in harsh conditions. In recent years, the rapid development of new varieties and new models suitable for different use environments continue to produce, the application is also expanding. In the future, will further develop a strong applicability, can further improve product quality and equipment utilization of new high-efficiency silicone defoamer, especially the excellent performance of polyether modified silicone defoamer and emulsion-type defoamer. Dominate in the market.
