Because the VOC content of water-based paint is relatively low, it is more and more popular among consumers. However, for some water-based paints, we will find that if it is not treated in time, it is easy to produce air bubbles and fish eyes, but some will not. What is the mystery in the middle? The answer is whether to add water-based paint defoamer.
Which additives are contained in water-based paint
Water-based coatings are mainly prepared with water as a solvent, and various additives are added during the preparation process, such as: drier, antifungal agent, fungicide , cosolvent, thickener, etc., to enhance the performance of water-based coatings.
Why water-based paint foams
From the additives contained above, we can see that most of the additives contained in water-based paints are surfactants, which are easy to cause foam. Especially in the mixing process of paint production machines, it is relatively easy to generate a large amount of foam, and it is difficult to eliminate. Then why some foam when used or why there is no foam during use, the difference lies in whether to add water-based paint defoamer.
Water-based paint defoamer can solve the foam problem of water-based paint, and has a good defoaming and anti-foaming effect. It is easy to solve the foam problem of paint. Therefore, some water-based paints do not foam because they contain water-based paint defoamers.
Adding water-based paint defoamer to water-based paint is comparable to improving the quality of the paint. It is a good partner of water-based paint.
Advantages of water-based paint defoamers
Water-based coating defoamer is mainly composed of organic polyether ester, which is made by special process.
Advantages include: good emulsification, strong dispersion, fast defoaming and foam suppression. Aiming at the foam problem of water-based paint, it will not have adverse effects on the system, and it is not easy to float oil and demulsify. Easy to use. Source manufacturers, cost-effective, and more advantageous prices.
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