Knowledge of powder defoamer

In industrial production, when encountering foam problems in all walks of life, I believe everyone will look for defoamers. There are many kinds of defoamers. In addition to the common liquid defoamers, powder defoamers are also popular. Its appearance is white or light yellow powdery solid, due to its convenient storage and transportation, its chemical properties are stable under storage conditions, and it is not easy to volatilize. Therefore, it is also popular in industries that require defoamers. Powder defoamer can be used for defoaming in cleaning agent, textile printing and dyeing, water treatment and other industries. It can also be used in industries where liquid defoamers are not suitable, such as defoaming of powdery products such as powder coatings, powder detergents, cement production, starch, degreasing powder, putty powder, and alkaline degreasing powder.
Composition and use of powder defoamer:

The appearance of powder defoamer is white or light yellow powder or crystalline solid, which is polymerized by polysiloxane, special emulsifier and high activity polyether defoamer through special process. Since this product does not contain moisture, it is used in powder products without moisture. It is characterized by strong defoaming ability, less dosage, long-lasting foam suppression, good thermal stability, good fluidity, no side effects, and convenient transportation. It has strong defoaming and antifoaming properties in high temperature and high alkalinity solutions.

Usage method and dosage: Put the defoamer in one or several pieces of foam-generating system medium with a cloth filter bag or mesh bag; or dissolve the defoamer in water, and then put or spray it into the foam-generating system continuously or intermittently, Make the defoamer disperse quickly and evenly in order to obtain better effect, and it should not be stored for a long time after dilution. The general use ratio is 0.001~0.5% of the foaming system, but different processes and different requirements, users can increase or decrease according to the actual situation.
The advantages of powder defoamer compared with ordinary defoamer:

With high stability, it can defoam stably in any horizontal and vertical systems, especially in self-leveling systems. It is especially suitable for handling microfoam and has excellent shear and high pressure resistance.

It is very popular in industries that cannot contain water, such as water-based slurry or mud. In some dry powder systems, it has excellent plasticizing effect and improves coating efficiency.

In terms of operation, it is more convenient than defoamers. It can be directly added to the working fluid, and it is easier to spread in the working fluid and penetrate into the foam.

The powder defoamer has strong wet dispersibility, especially in the self-leveling system, it can be well wetted by water and evenly dispersed in the system without oil spots, stains and other problems.