In the production and application of coatings, foam has always been one of the key factors affecting the quality and efficiency of coating. The importance of paint defoamers as professional additives to solve this problem is self-evident. This article aims to provide an overview of the basic concepts, classifications, and application values of defoamers in the coatings industry.

Paint defoamer is a chemical substance that can destroy the foam structure in the paint system and inhibit the formation of foam. They can effectively control foam problems in coatings by reducing liquid surface tension, increasing foam bursting speed or changing foam surface properties.

There are various types of defoamers for coatings, which can be divided into organic silicon, mineral oils, polyethers, fatty acid esters, etc. according to their composition; It can be divided into liquid type, powder type and lotion type according to the use mode. Different types of defoamers are suitable for different coating systems and process conditions.

The application of defoamers in coatings can not only significantly improve the construction performance of coatings, reduce defects such as sagging and pinholes during the coating process, but also improve the appearance quality of coatings and enhance the overall competitiveness of products.