Silibase is one of the leading & professional manufacturers specialized in producing all kinds of SILICONE BASED new materials.
Silibase technique team always focus on quality first and insist on developing new products.
Silibase people will serve you the best before and after sale.
Feb 27, 2023
Organosilicon defoamer not only has good defoaming and antifoaming effects, but also has the characteristics of low dosage, good chemical inertness, and can play its role under harsh conditions. In recent years, it has achieved rapid development, and new varieties and new models suitable for different use environments have been constantly produced, and the application range has also been expanding. In the future, new and efficient silicone defoamers with strong applicability, which can further improve product quality and equipment utilization, will be further developed, especially polyether modified silicone defoamers and lotion defoamers with excellent performance will occupy a major position in the market.
Advantages of organosilicon defoamer
Wide range of applications: Due to the special chemical structure of silicone oil, it is neither miscible with water or substances containing polar groups, nor with hydrocarbons or organic substances containing hydrocarbon groups. Due to the insolubility of silicone oil to various substances, it can be widely used in both water system defoaming and oil system.
Low surface tension: the surface capacity of silicone oil is generally 20-21 dynes/cm, which is lower than the surface tension of water (72 dynes/cm) and general foaming liquid, and has good defoaming effect.
Good thermal stability: Take the commonly used dimethicone oil as an example, it can withstand 150 ℃ for a long time and 300 ℃ for a short time, and its Si-O bond does not decompose. This ensures that the silicone defoamer 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, as long as the preparation is reasonable, organosilicon defoamer is allowed to be used in systems containing acid, alkali and salt.
Physiological inertia: silicone oil has been proved to be non-toxic to humans and animals, and its half-lethal dose is more than 34g/kg. Therefore, organosilicon defoamer (with suitable non-toxic emulsifier) can be safely used in food, medical, pharmaceutical and cosmetics industries.
Strong defoaming power: silicone defoamer can not only effectively break the generated foam, but also significantly inhibit foam and prevent the formation of foam. Its usage is very small. As long as one millionth (1 ppm) of the weight of foaming medium is added, it can produce defoaming effect. Its common range is 1 to 100 ppm. It not only has low cost, but also does not pollute the defoaming substances.