Chemical antifoams have proven to be effective and economical
Foam is a large volume of bubbles produced when certain types of gases disperse into a liquid and then the dispersion stabilizes. A high-strength liquid film surrounds the bubbles, forming large amounts of unproductive foam. Although the real cause of foam is a complex physical and chemical study, its presence poses serious problems to the operation of industrial processes and the quality of finished products. If not properly controlled, foam can reduce equipment capacity and increase processing time and expense.
Effective chemical defoamers must meet the following requirements:
• Has lower surface tension than the system to which it is added.
• Easily dispersed in the system.
• Have poor or low solubility (incompatibility) in the system.
• Stay inert.
• No heavy residue or odor.
Silicone antidoams can effectively meet these requirements.