Oil-based paints often encounter foam problems, which requires manufacturers to add defoamers to remove bubbles. So, how do defoamers help oil-based paints solve the foam problem? Let's take a look together!
First of all, a good defoamer needs to have defoaming and anti-foaming properties, and at the same time have excellent compatibility with other additives and compatibility with the entire coating system. At present, there are three main types of defoamers for oil-based paints: mineral oils, polysiloxanes and polyethers.
(Application of defoamers for oil-based paints)
Most of the bubbles in the paint are caused by these factors. In the production process of paint, stirring may produce bubbles; in the filling process, bubbles may affect the filling quality; in the construction process, bubbles may cause surface defects such as shrinkage holes in the coating film. Therefore, adding defoamers to oil-based architectural coatings is the main method to reduce the foam generated in the entire production process.
Nanhui defoamer manufacturer uses homemade emulsifiers to replace silicone components, reduce the amount of additives such as mineral oil organic polyethers and alcohols, and further adopts emulsification technology to successfully prepare defoamers suitable for oil-based coatings. This defoamer has the properties of self-emulsification, easy dispersion, strong versatility, good defoaming, and long-lasting foam suppression. It will not produce surface defects or affect film formation, and has a special effect on oil-based coating systems.
