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How to choose defoaming agent?

Views: 0     Author: Site Editor     Publish Time: 2020-11-10      Origin: Site

In general, an effective defoamer must satisfy the following conditions:

Must have a higher surface activity than a foaming surfactant, i.e. it must have a lower surface tension.

Easy to disperse in a system

It must be insoluble (at least partially insoluble) in the foaming medium, or it will act as a surfactant itself, i.e. to stabilize the foam.

The droplet size of the defoamer should be within the thickness range of the foam thin layer.

Chemical inertia

No residue or odor


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