Foaming has been very common in paint production, so it is very important to take anti-foaming measures. At present, the foam treatment method adopted by major manufacturers is to add polyether defoamer. However, in terms of characteristics, such defoamer will also have deficiencies. Therefore, the compatibility of defoamer and other additives should be considered. The combination of surface active substances such as emulsifiers in defoamer is very important.
Application of polyether defoamer
Application of polyether defoamer in coatings:
Adding it when the paint is abrasive can quickly eliminate the foam that has appeared, and prevent the foam from appearing again during the later stirring process, ensuring the excellent use of the paint.
Add it when stirring into paint to eliminate foam and avoid the formation of pores, pinholes and bulges on the coating film after use due to foam. Adding defoamer in this process can maintain long-term anti-foaming performance without affecting the beauty of paint application.
Polyether defoamer is used in coatings. In order to avoid the phenomenon of uneven color, pores and bulging caused by foam, the defoamer used must ensure the quality of the product and cannot affect the viscosity, color appearance, etc. of the slurry. It can maintain stable chemical properties, fast dispersion, low and high viscosity systems, and can maintain the anti-foaming effect for a long time.
Polyether defoamer
Precautions for the use of polyether defoamer:
It is not allowed to add defoamer directly to the already processed and diluted coating, which will affect the viscosity of the product. It is best to add it when the viscosity of the coating is relatively high, once for the stage of grinding raw materials, and the second is for the stage of mixing and finishing.
The amount added is generally 0.1~0.3%. It is not recommended to add too much. Adding too much will affect the brightness and shrinkage of the coating film, and the adhesion will decrease.
Guangdong Nanhui New Material Co., Ltd. focuses on solving various foam problems in production and processing, and can also provide free samples to solve various foam problems in production and processing. The product has good performance and high cost performance. Well received and received a lot of repeat customers.
If you want to know more about defoamer or have any questions about foam, you can call our national service hotline: 86 13428601010
