Application of sewage treatment defoamer in coating industry
Sewage treatment defoamer is a modified silicon polydimethylsiloxane high-efficiency defoamer emulsion, which can be used to eliminate foam in water-containing systems. Do you know how sewage treatment defoamers are used in the coating industry? Here is an introduction:
In the coating industry, especially water-based coatings, sewage treatment defoamers are used to help eliminate a large amount of foam generated during the coating production process that may affect the quality of the coating.
Traditional defoamers are all water-insoluble substances. They need to add appropriate amounts of emulsifiers, extenders, etc. to make them quickly and evenly dispersed in water-based coatings to play their defoaming role. If for some reason, such as the common construction method of adding water to dilute before painting, the emulsifier will be separated from the surface of the defoaming substance, so that the water-insoluble defoaming substance can easily produce shrinkage holes on the surface of the coating film. This is a common drawback of traditional defoamers, which will greatly reduce the effect of the product itself. Since the sewage treatment defoamer has been used in the coating industry, the disadvantages of traditional defoamers can be improved and avoided, which is another major reform for the coating industry.
The sewage treatment defoamer is very convenient to use. After professional and precise design, as long as the defoamer is put into the product you need to defoam, the defoaming effect can be clearly seen; it is suitable for direct addition at low and high temperatures; it has fast defoaming speed, long foam suppression, low dosage, and is non-toxic, non-corrosive, and has no adverse side effects, especially no side effects on water systems, and has good water solubility, is easy to disperse in water, and can be well compatible with liquid products, without the need for manual continuous stirring.
Many problems encountered in the production, construction and application of water-based paints are solved by defoamers, so sewage treatment defoamers are a vital link for the paint industry. In the later research and development of latex paint in the paint industry, people deeply realized from practice that if latex paint is to be made well, water-based paint additives, especially sewage treatment defoamers, are indispensable. However, at that time, most defoamers came from abroad and were relatively expensive. Only by mastering the manufacturing technology of defoamers can latex paint be brought to the market and occupy a place.
