In the industrial production process of petroleum, rubber, coating, textile, etc., if there is a large number of foam, not only the production operation is inconvenient, the equipment capacity is wasted, but also the product quality is affected. It is necessary to effectively control the foam in the production process. Dimethyl silicone oil in silicone defoamers. After the active ingredients formed by fumed silica are added to the foam system, due to the low surface activity, they are rapidly distributed on the liquid surface, inhibiting the formation of new elastic films, that is, terminating the production of foam.

On the other hand, the active ingredients diffuse on the surface of the foam elastic film and further diffuse. Penetrate into the membrane surface, make the membrane wall thinned rapidly, destroy the balance and stability system of foam, and foam is strongly pulled by the surrounding liquid with high surface tension, leading to the rupture of foam. Defoamer molecules insoluble in the system re-enter the surface of another foam film, so all foam is destroyed.

Silicone defoamers have the characteristics of good defoaming effect, low defoaming effect, good chemical inertness, and can function under harsh conditions.

Dye finishing is the physical or chemical combination of dyes and finishing agents with fabric fibers. After undergoing processes such as desizing, bleaching, dyeing, and finishing, the fabric achieves the specified color and function.

During the above dyeing process, there may be varying degrees of active substances, which may lead to foaming. Once foamed, it is difficult for fibers or fabrics to fully soak, which affects the dyeing quality. In order to solve the problem of foam, on the one hand, a low foam formula was designed to try not to use or use less foam additives. Withdrawal of pulp. The cooking process has strong alkalinity, and polyether defoamers can be chosen. The bleaching process has strong acidity, and silicon defoamers can be chosen.

The dyeing section is a process that extensively uses defoamers. The dyeing process requires a large amount of water, which is the main medium. Therefore, the dyeing process can be seen as the migration of water-soluble or water dispersible dyes from aqueous media to fibers. In order to make the fiber surface uniformly and directly contact the dyeing medium, it is usually necessary to add appropriate defoamers to meet the requirements.

Understand the application scope of organic silicon defoamers:

1. Textile pulp, high-temperature dyeing;

2. Industrial water treatment;

3. Mud defoaming in oil extraction;

4. Water phase foam such as water-based paint.

5. Other industries that require bubble suppression time and rapid defoaming.