Water based paint defoamers can be classified into various types based on their chemical composition and characteristics, mainly including:

Mineral oil: Low cost, suitable for some occasions with low performance requirements, but may affect the glossiness and water resistance of the coating.

Polyether: Suitable for various water-based systems, efficient and stable, with little impact on coating properties, it is currently the most widely used type.

Organic silicon: efficient, high temperature resistant, acid and alkali resistant, especially suitable for defoaming under extreme conditions, but the cost is relatively high.

Modified silicone oil: Combining the advantages of organosilicon and polyether, it has more comprehensive performance, but the price is relatively expensive.

Different types of defoamers have their own unique advantages and applicable scenarios, and choosing the appropriate defoamer is crucial to ensuring the quality of coatings.

Different water-based coatings have different requirements for defoamers, and the selection should be based on the chemical composition, pH value, viscosity, and other characteristics of the coating. The temperature, humidity, mixing speed and other factors of the construction environment will affect the formation of foam, so it is necessary to select defoamers that can adapt to the construction conditions.

With the increasingly strict environmental regulations, choosing low VOC and biodegradable defoamers has become a trend. Reasonably control costs and choose cost-effective defoamers while ensuring effectiveness. When applying, the recommended amount and method of addition by the manufacturer should be strictly followed to avoid excessive use leading to a decrease in coating performance or insufficient use failing to achieve the expected effect.