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Commercial Development and Applications of Silicone Antifoaming Agents
Release Date:
2020-11-16
Due to its unique molecular structure, silicone combines the properties of both inorganic and organic materials. It exhibits low surface tension, a small viscosity‑temperature coefficient, high compressibility, and excellent gas permeability, while also offering outstanding characteristics such as resistance to extreme temperatures, electrical insulation, oxidative stability, weatherability, flame retardancy, hydrophobicity, corrosion resistance, non-toxicity, odorlessness, and physiological inertness. Consequently, it is widely used across industries including aerospace, electronics and electrical engineering, construction, transportation, chemical processing, textiles, food, light industry, and healthcare. In particular, silicone is extensively employed for sealing, bonding, lubrication, coating, surface modification, mold release, defoaming, foam suppression, waterproofing, moisture protection, and inert filling applications.
Due to its unique structure, silicone combines the properties of both inorganic and organic materials. It exhibits low surface tension, a small viscosity‑temperature coefficient, high compressibility, and excellent gas permeability, while also offering outstanding characteristics such as resistance to extreme temperatures, electrical insulation, oxidation stability, weatherability, flame retardancy, hydrophobicity, corrosion resistance, non-toxicity, odorlessness, and physiological inertness. As a result, it is widely used across numerous industries, including aerospace, electronics and electrical engineering, construction, transportation, chemical processing, textiles, food, light industry, and healthcare. In particular, silicone is extensively employed for sealing, bonding, lubrication, coating, surface modification, mold release, defoaming, foam suppression, waterproofing, moisture protection, and inert filling applications. In recent years, domestically… Silicone defoamer How is its development going? Let’s take a look!
First, the individual markets will achieve fundamental supply-demand equilibrium, but competitive pressures will intensify. The concept of fundamental equilibrium has already been explained. As overcapacity in these individual markets becomes increasingly pronounced, competition among consumer‑facing firms will inevitably become fiercer, and production capacity will concentrate more rapidly in the hands of larger players.
Second, national restrictions on the export of high‑energy‑consumption products are beneficial to silicone‑producing enterprises. This is primarily because metallurgical silicon, a key raw material for silicone, is itself a high‑energy‑intensive product; a substantial reduction in its export share helps downstream silicone manufacturers cut costs and secure an adequate supply of raw materials.
Third, the global economy is experiencing a sluggish recovery, and the light industry and textile sectors are also gradually rebounding. At present, many observers anticipate that the world economy will pick up pace in the second half of this year. Countries, including the United States, are progressively implementing exit strategies. In the papermaking industry, silicones are extensively used as defoamers, surface‑treatment agents, and for vulcanization processes. Additionally, high‑temperature adhesives, sealants, and silicone resins are widely employed in the electronics sector, encompassing household appliances, solar‑energy materials, computers, mobile phones, and more. High‑temperature adhesives and silicone oils are commonly utilized in highway and high‑speed rail infrastructure. Furthermore, high‑temperature adhesives, sealants, and coupling agents find extensive applications in the automotive industry, oil‑pipeline systems, and coatings. The cosmetics and detergent industries also make substantial use of silicone oils. In the chemical sector, silicones serve as essential additives in agrochemicals, dyes, pharmaceuticals, insecticides, and fire‑extinguishing agents. With significant growth potential and clear signs of recovery across these industries, there is ample demand to support the continued expansion of the silicone market.
Silicone defoamer Applications:
Silicone defoamers, owing to their outstanding performance, are widely used in industrial processes. These defoamers are primarily formulated as silicone pastes composed of dimethyl silicone oil and precipitated silica. In defoamers, the hydrophilic–lipophilic balance (HLB) of the emulsifier significantly influences their performance.
In silicone‑based defoamers, while maintaining the composition and formulation of other active ingredients, emulsifiers with varying hydrophilic–lipophilic balance (HLB) values are added under identical preparation conditions. By evaluating the defoaming performance and stability of the silicone defoamer as the test criteria, the optimal HLB value for the defoamer is determined.
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