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Why are emulsion defoamers layered?

In many production processes, problem caused by harmful foams. The presence of these foams reduces the utilization rate of equipment, causes production losses, pollutes the environment, and even affects the normal operation of operations.

To eliminate harmful foam, you can use standing, decompression (vacuum), heating or pressurization, chemical defoaming, etc. But when you need to quickly and effectively eliminate foam in a short time, you need to use chemical defoaming. Chemical defoaming does not require a lot of equipment investment and does not need to change the original process. It is the most convenient way of operation.emulsion defoamers

 

Why are emulsion defoamers layered?

Emulsion-type defoamers will delaminate if they are not used for a long time. After delamination, defoamers will affect their use.

Why do they delaminate? What are the causes?

Emulsion defoamers are physically emulsions and are thermodynamically unstable systems. Layering may occur after long-term storage, but use after stirring does not affect product effectiveness. Another layering phenomenon may be deterioration and layering. This is because the bacteria act on the emulsion. If it is not very serious, this product can also be used as long as it is added with a strong fungicide to kill the internal bacteria and return to the normal state. Run out as soon as possible. There is also a delamination phenomenon because the defoamer is diluted with water, destroying the original structure of the defoamer, resulting in poor stability of the defoamer, breaking the viscosity system of the defoamer itself, and causing delamination of the defoamer. Whether the defoamer is easy to layer is also an important indicator to measure the quality of the defoamer.

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