What should I do if there is a lot of foam in latex paint? It can be solved by adding defoamer for latex paint coating. The latex paint formulation contains one or more additives, so foam is prone to appear. This article analyzes the cause of foaming in latex paint and provides solutions for defoaming.
(Picture: The role of defoamer for latex paint)
Reasons for foaming of latex paint
Most coatings contain one or more additives. The adjuvant is characterized by a small amount in the formulation and plays a role in improving performance. The usual dosage of latex paint additives is 5% to 8% of the total paint. Additives can improve many properties of the coating, and can provide features that are not originally available, such as construction performance and improved appearance.
1. Internal factors of latex paint foaming
Many additives are surfactants, which will improve the surface tension of the system and cause foam in the latex paint.
2. External factors of latex paint blistering
Various high-speed mixers, such as three-roll mills, sand mills and ball mills, are used in the paint manufacturing process. Various methods and methods used in paint coating, such as air spraying, airless spraying, roller coating, flow coating and curtain coating Wait. In these processes, the free energy of the coating system will be increased to different degrees, helping to generate foam, which is the external factor that generates foam.
(Picture: Causes of foaming in latex paint)
Defoaming solution
The foam problem in latex paint will make the production operation difficult. The air in the foam will not only hinder the dispersion of pigments or fillers, but also make the equipment utilization insufficient and affect the output: when filling the can, it needs to be filled repeatedly due to foam. The air bubbles left in the paint film during construction cause surface defects, which not only damage the appearance, but also affect the corrosion resistance and weather resistance of the paint film.
Therefore, the foam needs to be defoamed and suppressed. A defoamer can be added to eliminate foam.
Nanhui defoaming agent manufacturer has developed and designed the latex paint defoamer according to the characteristics of easy foaming in latex paint system. It is prepared by a special process with small addition amount and long foam suppression time. It is a kind of easy-to-use paint defoamer agent.
(Picture: Nanhui latex paint defoamer provides free samples)
Advantages of Nanhui latex paint defoamer:
1. R&D and sales by large factories, reliable and good quality;
2. Is the supply sufficient, is the quality guaranteed, and the service perfect?
3. The quality is stable, will not react with the latex paint system, and will not affect the quality of the glue paint;
4. The concentration of defoamer is high, and the amount of addition is small, generally about one thousandth to three thousandths.
Nanhui is a manufacturer with years of application experience. It has far more defoaming technology than other antifoaming agents in the market. From the above cases, we prove the strength of our Nanhui defoamer. We have a group of excellent defoaming engineers, and an independent laboratory that facilitates defoaming experiments with foams that are difficult for customers to solve. If you want to know more about defoamer products, you can call our hotline: +86 13428601010.
This article is from the manufacturer of Nanhui defoamer (http://www.nhdefoamer.com/), please indicate the source if you need to reprint.
