In-depth analysis of the working principle of water-based latex paint defoamer

In the field of architectural decoration and industrial coating, water-based latex paint is favored for its environmental protection and convenience. However, water-based latex paint is often troubled by foam problems during production, storage and construction. At this time, water-based latex paint defoamer becomes the key to solving this problem. It is like a behind-the-scenes hero, silently helping to create the paint film effect.

The water-based latex paint system is relatively complex, and multiple factors work together to make foam easy to produce. First of all, from the perspective of formulation, water-based latex paint contains a large amount of surfactants, such as emulsifiers and dispersants. Although these substances help to disperse and stabilize the components of the paint, they reduce the surface tension of the liquid, making it easier for air to enter and form bubbles.

The presence of foam brings many negative effects to water-based latex paint. In terms of appearance, when foam remains on the surface of the paint film, it will form defects such as pitting after drying, which seriously affects the flatness and glossiness of the paint film and reduces the decorative effect. From a performance perspective, foam will destroy the continuity and density of the paint film, and reduce the water resistance, scrub resistance and other properties of the paint film.

Water-based latex paint defoamers mainly achieve defoaming and anti-foaming functions by reducing the surface tension of foam. When the defoamer is added to the water-based latex paint system, it will quickly disperse in the paint liquid and preferentially adsorb on the surface of the foam. Since the intermolecular force of the defoamer is smaller than the intermolecular force of the foam liquid film, the local surface tension of the foam liquid film is reduced.

Water-based latex paint defoamers play a vital role in the production, storage and construction of water-based latex paint. By reasonably selecting and using defoamers, the foam problem can be effectively solved, the quality and construction effect of water-based latex paint can be improved, and users can have a more beautiful and durable paint film experience.