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Are you fully aware of the characteristics of silicone defoamers?

Mar 29, 2019

    Silicone defoamer has good compatibility, strong dispersibility, stable mixing, fast defoaming speed, long-lasting foam suppression and wide application. Let us know more about its characteristics.

1. Wide application: Due to the special chemical structure of silicone oil, it is neither compatible with water or polar group-containing substances, nor compatible with hydrocarbons or hydrocarbon-containing organic compounds. Because silicone oil is insoluble to various substances, it is widely used, and it can be used both in defoaming in water systems and in oil systems.

2. Small surface tension: The surface oil capacity of silicone oil is generally 20-21 dynes/cm, which is smaller than that of water (72 dynes/cm) and general foaming liquid, and the defoaming efficiency is good.

3. Good thermal stability: Take the commonly used dimethicone as an example, it can withstand 150 for a long time, and can withstand 300 or more in a short time, and its Si-O bond does not decompose. It ensures that the silicone defoamer can be used over a wide temperature range.

4. Good chemical stability: Because the Si-O bond is relatively stable, the chemical stability of the silicone oil is very high, and it is difficult to chemically react with other substances. Therefore, silicone defoamers are allowed to be used in systems containing acids, bases, and salts as long as they are formulated properly.

5. Physiological inertness: Silicone oil has been shown to be non-toxic to humans and animals, with a semi-lethal dose greater than 34 g/kg. Therefore, silicone defoamers (in combination with suitable non-toxic emulsifiers) can be safely used in the food, medical, pharmaceutical and cosmetic industries.

6. Strong defoaming power: Silicone defoaming agent not only can effectively break the foam that has been formed, but also can significantly inhibit the foam and prevent the formation of foam. It is used in a small amount, and as long as it is added in a millionth of the weight of the foaming medium, it can produce a defoaming effect. Not only is the cost low, but it does not contaminate the defoamed material.


Contact:Sharon Song(Sales manager)

Zhejiang Runhe Organosilicone New Material Co.,Ltd(Factory)

Zhejiang Runhe Chemical New Material Co.,Ltd(Exporter)


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