Decryption: The important factors that affect the performance of defoamers

The main role of defoamers in production process is defoaming, but why is the performance of same defoamer different during the application? It’s very simple, because many factors affect the performance of defoamers. Today SIXIN defoamers come to decipher the factors that affect the performance of defoamers.

First, the character of defoamer

The dispersion and surface properties of the defoamers significantly affect the performance. The defoaming agent should have a suitable dispersion and particle diameter, and no matter  particle diameter is too large or too small, it will affect the performance.

Second, the solubility of defoamer

When the surfactant is completely dissolved in the aqueous solution, it tends to be aligned at the gas-liquid interface of the foam to stabilize the foam. When the surfactant is in an insoluble state or a supersaturated state, the particles are dispersed in the solution and aggregated on the foam, that is, function as an antifoaming agent.

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Third, the temperature

The temperature of the foaming liquid also affects the performance of the defoaming agent. When the temperature of the foaming liquid itself is relatively high, it is recommended to use a special high-temperature defoaming agent, because if a common defoaming agent is used, the defoaming effect will be greatly reduced, and even more, the defoaming agent will directly demulsification.

In summary, when choosing a defoamer, we must pay attention to the character of the defoamer, understand the solubility of the defoamer, and also the normal operating temperature range of the defoamer. High temperature foaming liquid with high temperature resistance defoamer.


Post time: May-10-2019