What is a water-based defoamer?

What is a water-based defoamer?

Water-based defoamer is mainly used for foam treatment in water-based systems such as water-based coatings and water-based inks. Easy to operate, with excellent defoaming and anti-foaming performance.

Waterborne defoamer an emulsion made of dimethyl silicone oil, silica, emulsifier, etc. It has efficient defoaming performance and remarkable anti-foaming effect. For foam treatment, it is not only to quickly and thoroughly eliminate foam, but also to inhibit foam production for a long time in the foaming system, water-based defoamer can achieve these two requirements. In addition to the excellent performance of defoaming and antifoaming, the defoamer also has the advantages of being used in high temperature environment, rapid dispersion in foaming system, good compatibility with foaming system, low cost, wide range of scenes and so on.

Different types of waterborne defoamers

Silicone defoamer: strong defoaming performance, relatively heat-resistant, but also antioxidant, but the foam inhibition time is not very long, if necessary, can be used with other ingredients of defoamer. Because of its easy access to raw materials and low price, it is widely used in the paper industry.

Defoamer of polyether composition: this kind of defoamer is also very suitable for high temperature environment, excellent anti-foaming performance, strong dispersion in water and widely used.

Mineral oil composition of defoamer: here a kind of defoamer is mainly can not use silicone defoamer industry use more, will not produce silicon spot, defoaming and anti-foaming ability are also quite outstanding, but the addition amount is slightly more.

The more waterborne defoamers are added, the better the effect will be?

As a kind of emulsion, the defoaming performance of waterborne defoamer is not related to its concentration, but may not be good if it is added too much. For most industries, thinner defoamers will have better defoaming effect, because dilution defoamers are easier to disperse in water, dissolve faster and defoamer faster.

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