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Defoamer
Defoamer is a chemical substance that can eliminate or inhibit foam in liquid.
Principle of defoaming:
Defoamers typically function in the following ways:
Reduce the surface tension of the liquid, and make the foam film thin and burst. Enter the foam film and destroy its stability. Prevent the formation of foam or inhibit the growth of foam.
Category:
Organic silicon defoamer: has good defoaming and anti foaming properties, and high chemical stability.
Polyether defoamer: has good water solubility and a wide range of applications.
Mineral oil defoamer: The price is relatively low, but the effect may not be as significant as the previous two.
Application:
Industrial production: In the chemical industry, paper making, coating, printing and dyeing and other industries, preventing the production of foam can improve production efficiency and product quality. For example, in the process of papermaking, the mixing of pulp is easy to produce a lot of foam, and the use of defoamer can reduce the interference of foam on production.
Food processing: control foam during food fermentation, cooking, mixing, etc. For example, in beer brewing, defoamers help prevent foam from overflowing.
Biomedicine: eliminate foam in fermentation, extraction and other processes.
Considerations:
The properties of a foaming system include the composition, acidity, and temperature of the liquid.
The performance of defoamers, such as defoaming efficiency, defoaming time, compatibility, etc.
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