Thread Content
Bubbles refer to large bubbles that are visible to the naked eye. Bubbles generally occur during the production or application of coatings. Possible solutions: 1) Use an appropriate defoamer. During the production of coatings, large bubbles can form when a large amount of air is mixed into the coating. Adding an efficient defoamer to the stirred base material can help remove foam. These efficient defoamers are usually able to withstand the cutting effects during mixing, and continue to function throughout the mixing process to eliminate foam. Moreover, the mixing process can reduce the likelihood of these highly effective defoamers causing defects on the surface of the paint film. Generally speaking, efficient defoamers are not suitable for use in any type of diluent. For varnishes or diluents, \"rapid-acting\" defoamers should be used. Defoamers can also be used to eliminate bubbles \"inside the tank.\" When selecting a defoamer, it is necessary to consider the balance between its durability and the reduction of surface defects in the paint film. Non-silicone defoamers have fewer side effects in terms of surface defects, but their durability is lower. Also, some defoamers can initially cause defects on the surface of the paint film, but if 24 hours are allowed for them to react fully with the paint, their tendency to cause such surface defects is reduced. 2) Minimize surfactants that cause foaming: The polymer products offered by Huajinsi Company (www.pthjs.com) have a very low tendency to produce large bubbles. One of the reasons for this is the low content of surfactants in the product. American Huajinsi Company is a professional chemical company with a history of forty years; it possesses high-quality raw materials for water-based paints, such as water-based polyurethane dispersions and water-based acrylate emulsions. Let us share more with you about the principles and application experience of water-based paints. Please visit www.pthjs.com