antifoaming agent
Sign in to savethumb|right|250px|Dosage of defoamer A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. The terms anti-foam agent and defoamer are often used interchangeably. Strictly speaking, defoamers eliminate existing foam and anti-foamers prevent the formation of further foam. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam already formed.
Article
20 sectionsContents
- Properties
- History
- Classification
- Oil-based defoamers
- Powder defoamers
- Water-based defoamers
- Silicone-based defoamers
- Alkyl polyacrylates
- Glycol based defoamers
- Industrial problems
- Mechanical problem factors
- Foam in process and coolant liquids
- Test methods
- Applications
- Detergents
- Food
- Industrial use
- Pharmaceuticals
- See also
- References
thumb|right|250px|Dosage of defoamer A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. The terms anti-foam agent and defoamer are often used interchangeably. Strictly speaking, defoamers eliminate existing foam and anti-foamers prevent the formation of further foam. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam already formed.
In industrial processes, foams pose serious problems. They cause defects on surface coatings and prevent the efficient filling of containers. A variety of chemical formulae are available to prevent formation of foams.