Explanation

It is also called a "break agent", which refers to a substance with lower surface tension and higher surface activity and can inhibit or eliminate foam in the liquid. As, there are low-carbon alcohols, mineral oils, organic polar compounds and silicone resin, and their forms include oil type, solution type, lotion type and foam type. Anti tank agents are widely used to remove harmful foam generated in the production process of latex, textile sizing, food fermentation, biomedicine, coatings, petrochemical, paper making, industrial cleaning, sewage treatment and other industries. defoamer must meet two basic characteristics: ① insoluble or slightly soluble in foaming medium; ② The surface tension is lower than that of the foaming medium. In addition, it also requires characteristics such as fast defoaming speed, long foam suppression time, low dosage, no side effects, and environmental friendliness. The diversity is determined by the different foaming environments in different industries and processes. From the appearance and morphology, it can be divided into solid and liquid; In terms of the types of defoamers, they can be divided into silicone, polyether, high carbon alcohols and high carbon alcohol ester defoamer, natural oils, etc.

Classification