The active ingredients in gypsum self leveling defoamers can quickly adsorb onto the surface of bubbles, forming a thin film. This thin film can significantly reduce the surface tension of bubbles, making the bubble walls fragile and prone to rupture. Meanwhile, the interaction between defoamer molecules can disrupt the elasticity of bubbles, causing them to lose their self-healing ability and accelerating the process of bubble rupture.

Defoamer molecules have good diffusivity in gypsum slurry and can quickly penetrate into the interior of tiny bubbles. Once inside the bubble, the defoamer molecules will further reduce the pressure inside the bubble, causing the bubble volume to shrink and eventually rupture. This diffusion permeation effect is not limited to surface bubbles, but can also penetrate deep into the interior of gypsum slurry, effectively eliminating deep bubbles.

When selecting gypsum self leveling defoamers, priority should be given to their compatibility with self leveling materials. Ensure that defoamers do not have adverse reactions with other components in the self leveling material, which may affect the performance of the material. At the same time, it is also necessary to pay attention to the defoaming efficiency, durability, and environmental performance indicators of defoamers, and choose products with excellent performance and environmental friendliness.

The amount of defoamer added should be adjusted reasonably according to factors such as the type of self leveling material and construction environment. Generally speaking, adding too little may not achieve the desired defoaming effect, while adding too much may affect the performance of self leveling materials. During the construction process, defoamers should be directly added to the self leveling material in a certain proportion (such as the recommended amount of 0.1% \~0.3% of the weight of the construction material), and thoroughly mixed evenly. The mixing time should be long enough to ensure that the defoamer can be evenly distributed in the gypsum slurry.