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