After the printing is condensed, not only the surface is not only beautiful and uniform, but also accompanied by many fine pores or peeling off. These are the problems of the quality of the paint. In the final analysis, the root cause of the problem is that the paint produces a lot of air bubbles during the stirring movement and impact process. It is because the viscous bubbles of the paint liquid are not easy to discharge, and the places where there are bubbles during printing and smearing are not in good contact, so the above-mentioned problems occur. Now many merchants use defoamer in paints to break the bubbles, so today I will explain Let's take a look at the composition types and usage methods of paint defoamers!
Judging the composition of paint defoamers can distinguish the types
Under the implementation of environmental protection policies, lower alcohols (such as methanol, concentrated sulfuric acid, ethylene, etc.) and lipid components contain toxicity and formaldehyde, and the defoaming effect is relatively poor, so they are no longer suitable for coatings to take the route of environmental protection. We are now in Several ingredients that can be seen in the market (such as mineral oil, silicone, ether, modified silicone ether) are keeping up with the pace of the current era. As the main ingredients, they determine the type of paint defoamer, defoaming and antifoaming The effects are quite good, and proper use will not cause delamination, demulsification, and emulsion thinning. There are high-transparency paint defoamers available and will not change the color of the paint.
Then the amount of paint defoamer added is not the more the better
No matter what kind of chemical product it is, the control of the amount of use is a basic operation. Too much or too little will affect the performance of the product, and the application of the paint defoamer is the same. It is counterproductive and makes the shrinkage of the paint more serious. Different manufacturers have different concentrations of paint defoamers. According to our Tianfeng products, the correct operation method is to mix the amount of paint with the paint defoamer before stirring the paint. Generally, the amount added It is 0.05%-0.03%, first use a small amount of paint to test the effect, then add an appropriate amount into the paint and stir evenly, so that the molecules can be fully mixed, so the effect of eliminating foam is better!
