Polyether defoamer is a common surfactant, which is mainly used to reduce or eliminate foam in liquid system. Foam is formed by bubbles on the liquid interface, which will interfere with industrial processes or affect product quality. Therefore, defoamers are needed to control the generation and stability of foam.
Polyether defoamers are typically non ionic surfactants. They are composed of polyether compounds with good dispersibility, wettability, and the ability to reduce surface tension. Polyether defoamers rapidly diffuse in the liquid system and adsorb at the liquid interface, forming a stable covering layer. This covering layer can destroy the stability of foam film, make bubbles burst rapidly, and prevent the formation of new bubbles, thus reducing or eliminating foam.
Polyether defoamer is widely used in various industries, such as chemical, pharmaceutical, food processing, foam plastic manufacturing, etc. Some common polyether defoamers include polyethylene glycol (PEG), polypropylene glycol (PPG), and polyoxyethylene stearic alcohol ether. These defoamers typically exist in the form of liquids or powders and can be selected according to the specific application needs.
It should be noted that when using polyether defoamers, corresponding usage guidelines should be followed to avoid unnecessary effects caused by excessive use. In addition, different liquid systems and process conditions may have different requirements for defoamers. Therefore, in specific applications, it is recommended to choose suitable polyether defoamers based on the actual situation and conduct experimental verification.