The defoaming principle of building industry defoamers is mainly based on the action of their surfactants. Surfactant molecules have two parts: hydrophilic and hydrophobic groups, which can form a thin film on the surface of bubbles and reduce their surface tension. When the concentration of surfactants reaches a certain level, the bubble

wall becomes fragile and prone to rupture.

The defoamer molecules quickly adsorb onto the surface of the bubbles and spread out, forming a continuous thin film. The formation of thin films reduces the surface tension of bubbles, making the bubble walls unstable. Under the effect of the internal pressure of the bubble, the bubble wall breaks and the foam quickly disappears.

Choose raw materials that can quickly and completely eliminate foam. Ensure that defoamers are compatible with other components in building materials and do not affect material performance. Select non-toxic, harmless, and biodegradable raw materials that meet environmental protection requirements. Considering cost factors while

ensuring performance, choose materials with high cost-effectiveness.