The advantages of silicone defoaming agent
Source: | Author:ZINCA | Published time: 910 days ago | 353 Views | Share:

Wide application: because of the special chemical structure of silicone oil, it is neither soluble with water or substances containing polar groups, nor with hydrocarbons or organic compounds containing hydrocarbons.Therefore, silicone defoaming agent is dissolved in water, animal and plant oils and high boiling point mineral oils.Because of its insolubility in various substances, silicone oil is widely used. It can be defoamed in water system and used in oil system.

Small surface tension: the type of viscosity of silicone oil, its surface capacity is generally 20-21 dyne/cm, than water (72 dyne/cm) and the surface tension of general foaming liquid are much smaller, which is also another reason for the wide application of silicone defoaming agent.

Good thermal stability: take the commonly used dimethyl silicone oil as an example, it can be resistant to 150 degrees Celsius for a long time, and can be resistant to more than 300 degrees Celsius for a short time, and its Si-O bond does not decompose.This ensures that silicone defoaming agent can be used in a wide temperature range.

Good chemical stability: Because the Si-O bond is relatively stable, the chemical stability of silicone oil is very high, and it is difficult to react with other substances.Therefore, silicone defoamer is allowed to be used in systems containing acid, alkali and salt as long as it is properly prepared.

Physiological inertia: Silicone oil has been shown to be non-toxic to humans and animals, and its semi-lethal dose is greater than 34 g/kg.So silicone defoaming agent (with the appropriate emulsifier) can be safely used in food, medical, pharmaceutical and cosmetic industries.

Strong defoaming power: silicone defoaming agent can not only effectively break the foam that has been generated, but also significantly inhibit the foam and prevent the formation of foam.It is used in small quantities and can be defoamed by adding one millionth (1ppm) of the foaming weight.Its common range is 1 to 100ppm.Such use, not only low cost, and do not pollute by defoaming material.