Various components and functions of defoamers
Defoamers are generally composed of various components with different functions, including main defoamers, auxiliary defoamers, carriers, emulsifiers or unfolding agents, stabilizers or compounding agents.
(1) Main anti foaming agent: The main active component, usually insoluble granular substances, such as hydrophobic silica, fatty amines, paraffin, etc. treated with silicone oil.
(2) Auxiliary defoamer: It is an active component that plays a regulatory role, improves the surface effect of the main defoamer, and enhances the efficiency of the main defoamer. Such as fatty alcohols, fatty acid esters, etc.
(3) Carrier: It supports the main and auxiliary defoamers, and water is the most convenient and economical carrier
(4) Emulsifiers and unfolding agents: They are used to immediately disperse the active components of defoamers in the foaming medium, allowing for faster and more contact with the surface, thereby improving the unfolding efficiency of defoamers. Common emulsifiers include organic esters and ethyl oxidation products.
(5) Stabilizers and compounding agents: They are additives that improve the stability and storage time of defoamers. The stabilizer of water-based defoamers is often a preservative to prevent bacterial damage to the product during storage. Commonly used additives include oleic acid, hexanediol, etc.

Hydroxyl silicone oil MY 206