What is the relationship between oil defoamers and surfactants?
FAQ 2025-06-26
Is defoamer a surfactant? Hey, this question is very technical. In fact, many workers who use defoamers for the first time will think about this question. Since defoamers are processing aids, are they surfactants?


In fact, surfactants have many functions, and different HLB values have different functions. When the HLB value of a surfactant reaches 1-3. it has a defoaming function, regardless of being limited to a certain field rather than all fields. Therefore, many people mistakenly believe that surfactants are defoamers. In fact, they are not. The two are different types of products.
The difference between defoamers and surfactants:
1. Each has a different way of defoaming.
2. Defoamers can suppress foaming while surfactants cannot.
3. Defoamers are chemically stable while surfactants are just the opposite.
4. The main function of defoamers is defoaming, while surfactants have more functions.
5. Surfactants have many side effects, while defoamers have no side effects except for a few special defoamers.
Characteristics of surfactants:
Characteristics of surfactants: There are many ways to classify surfactants, and they have many functions, including seven major functions: wetting, micelle and solubilization, emulsification, foaming, suspension, disinfection and sterilization, and descaling and washing.
Characteristics of grease defoamers:
Grease defoamers are composed of polysiloxane and polyether, emulsifier, dispersant and stabilizer. As an excellent defoamer, grease defoamer has outstanding defoaming and antifoaming performance. What is particularly valuable is that it can maintain good defoaming and antifoaming effects at lower concentrations, so it is widely used.


