How does an antifoam work?
How does an antifoam work?
Once the antifoam has entered the lamella, a lens is formed by the antifoam on the lamella and begins to spread. The progressive spreading process reduces the thickness of the lens, the shape of which is altered by movements in the foam. Stresses occur until the lens breaks and the foam lamella ruptures.
Can antifoam be filtered?
The active ingredient of the antifoams is a siliconebased polymer that has a molecular weight range of 3,200 to 16,500 Da. These products consist of particles ranging in size from 10 to 40 microns and can be removed by filtration.
Is silicone oil an antifoam agent?
Up to this time, there have already been known various silicone antifoaming agents, for example, silicone oils, viscous compounds comprising a silicone oil and a fine inorganic powder such as carbon black, alumina or colloidal silica (i.e., oil compounds).
What is silicone antifoam made of?
This antifoam is a highly active silicone emulsion based on activated polyu0002dimethylsiloxane. It has been specially formulated to prevent, control or destroy foam in liquid systems. This antifoam is a highly active silicone emulsion based on activated polydimethylsiloxane.
Why choose CHT’s silicone antifoams?
CHT’s silicone antifoams and defoamers are generally used in any application which involves liquid-gas contact and agitation, and the products are designed to control foam with the end goal of optimizing manufacturing throughput and productivity. Common attributes of CHT’s off the shelf and customized antifoam solutions are as follows:
What are silicone defoamers used for?
Silicone Defoamers and Antifoams Silicones are widely used as defoamers and antifoams in pulp and paper, paints and coatings, water treatment, metalworking fluids, and other industrial applications.
What is emulsifiable antifoam?
Emulsifiable antifoam concentrate for use in brown stock washing for kraft and sulfite processes. 100% active. A water-insoluble silicone polyether copolymer with hydrophobized silica. Siltech C-4700 is designed to control foam without defects in waterborne and solvent-based paints and coatings.
