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What is the Difference between Water-based Defoamers and Oil-based Defoamers

Jul 20, 2021

Defoamers can be divided into many types, including water-based defoamers and oil-based defoamers, so the question is, what is the difference between water-based defoamers and oil-based defoamers ? How to choose them? Let’s talk to the editor of Haian Petroleum!
The price of water-based defoamers is relatively low, and they are widely used in textile printing and dyeing, pulping and papermaking, chemical reactions, petrochemicals, metalworking fluids, biological fermentation, water treatment and other industries.

However, the price of petroleum defoamers is relatively high, which is unacceptable for many manufacturers. However, judging from the amount of oil defoamers used, the amount of oil defoamers used is very small , Usually only need to add 1-75 system fraction × 10-6 can achieve good defoaming effect. If used in combination with other defoamers, the cost can be further reduced.
Generally speaking, compared with other defoamers, the cost of using oil-based defoamers will not increase. With the continuous improvement of defoamer synthesis technology, the editor believes that the problem of high prices of oil-based defoamers will definitely be solved.
1. According to whether the defoamer required by the foaming system is oily or water-based, add water-based defoamer and oil-based defoamer;
2. Whether the defoamer can eliminate the harmful foam in the system, but it will not negatively affect the materials of the original system;
3. See if there are any factors in the industry that need it, such as high temperature, strong acid and strong alkali, because this will cause defoamers to lose their effect.

Mineral oil-based defoamers Mineral oil-based defoamers are also a relatively important type of defoamer, which are mainly used in inks, adhesives, coatings, etc., which are widely used. The basic composition of mineral oil type defoamers is mineral oil, hydrophobic particles and emulsifiers. The basic preparation process is to mix mineral oil and hydrophobic particles at high temperature to facilitate the dispersion of hydrophobic particles in mineral oil, from "secondary aggregation" to "primary aggregation", and then add emulsifier at a lower temperature. In order to achieve the purpose of self-emulsification and dispersion of the defoamer in water. However, according to different industries and different processes, sometimes the defoamer needs good dispersibility, and sometimes it is not necessary for the defoamer to have good dispersibility. This is because these industries themselves use a large number of dispersing agents, wetting agents and other surfactants, and they can also disperse the defoamer to play the best role of the defoamer.
When preparing mineral oil defoamers, the properties and proportions of the raw materials, the order of addition, the emulsification method, etc. can all affect the quality of the product.

There are many types of defoamers, including water-based defoamers and oil-based defoamers, then the difference between water-based defoamers and oil-based defoamers and how to choose them, the following is a detailed introduction for everyone

The price of water-based defoamers is relatively low, and they are widely used in textile printing and dyeing, pulping and papermaking, chemical reactions, petrochemicals, metalworking fluids, biological fermentation, water treatment and other industries.
However, the price of petroleum defoamers is relatively high, which is unacceptable for many manufacturers. However, judging from the amount of oil defoamers used, the amount of oil defoamers used is very small , Usually only need to add 1-75 system fraction × 10-6 can achieve good defoaming effect. If used in combination with other defoamers, the cost can be further reduced.
Generally speaking, compared with other defoamers, the cost of using oil-based defoamers will not increase. With the continuous improvement of defoamer synthesis technology, the editor believes that the problem of high prices of oil-based defoamers will definitely be solved.
1. According to whether the defoamer required by the foaming system is oily or water-based, add water-based defoamer and oil-based defoamer;
2. Whether the defoamer can eliminate the harmful foam in the system, but it will not negatively affect the materials of the original system;
3. See if there are any factors in the industry that need it, such as high temperature, strong acid and strong alkali, because this will cause defoamers to lose their effect.

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