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A Review of Foam and Defoamer Theory for Aqueous Industrial Fluids


The defoamer is a critical component of an aqueous metal removal fluid formulation and industrial cleaner formulation. During use of the fluid, the defoamer functions to minimize foam buildup. Foam is undesirable for reasons such as reduction of lubrication, heat removal and poor cleaning. Although the defoamer is expected to perform well initially, its defoaming properties should also persist over an extended period of time. There are many factors that affect defoamer performance including inherent system foam tendency, filtration, defoamer chemistry, and more. A review what causes foam, defoamer chemistry types, effect of filtration on defoamers, washability concerns and typical test methods will be discussed.

Presenter: Stefanie Velez, Münzing
Stefanie Velez has worked at Münzing for over 10 years and is currently the Industrial Fluids Applications Manager. She is responsible for managing the technical service laboratory for industries including metalworking fluids, lubricants, and other industrial markets. In this role, her responsibilities include overseeing customer projects in the technical service lab, new defoamer and testing development, and providing technical support to the sales team and customers globally. She earned her bachelor’s degree in chemical engineering and master’s degree in chemistry from Stevens Institute of Technology and is an active member of STLE and ASTM.

June 18, 2024
Tue 10:00 AM CDT

Duration 1H 0M

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