Application of water treatment defoamer in coating industry
In the paint industry, especially water-based paints, sewage treatment defoamers are used to help eliminate a large amount of foam produced during the paint production process that may affect the quality of the paint.
Traditional defoamers are all water-insoluble substances. They need to add appropriate amounts of emulsifiers, extenders, etc. to make them dispersed quickly and evenly in water-based paints 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 drawbacks brought by traditional defoamers can be improved and avoided, which is another major reform for the coating industry.
The defoamer for sewage treatment is very convenient to use. After professional and precise design, you can clearly see the defoaming effect by simply adding the defoamer into the product you need to defoam. 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 for water systems. It has good water solubility, is easy to disperse in water, and is well compatible with liquid products, without the need for manual continuous stirring.
Under normal circumstances, defoamers are generally divided into three categories: industrial wastewater treatment defoamers, biological wastewater treatment defoamers and circulating wastewater treatment defoamers. What about polyether defoamers? Polyether defoamers are synthesized from various initiators, and these initiators can be used as the basis for classifying polyether defoamers. According to them, polyether defoamers can be divided into polyol type, fatty acid ester type, and amine ether type. Therefore, it has a very wide range of applications. Just like the circulating wastewater treatment defoamer contains polyether components, it can be quickly dispersed when added to water. In this regard, polyether defoamer is a defoamer with a very unique segmentation method and chain length.
Many problems encountered in the production, construction and application of water-based paints are solved by defoamers, so sewage treatment defoamers are a vital part of the paint industry. In the later research and development of latex paints in the paint industry, people have deeply realized from practice that if latex paints are to be made well, water-based paint additives, especially sewage treatment defoamers, are indispensable.
