What is the self-emulsifying silicone antifoaming agent and defoaming agent?-Iota

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Service > What is the self-emulsifying silicone antifoaming agent and defoaming agent?

What is the self-emulsifying silicone antifoaming agent and defoaming agent?

Silicone antifoam
Silicone antifoam typically be blended by polydimethylsiloxane and silica substance from two main components, to polydimethylsiloxane as a base defoamer is a defoaming system class of desirable defoamers, because it does not dissolve in water, is difficult emulsified polydimethylsiloxane lower than the surface properties of the carbon chain hydrocarbon, and therefore lower than the surface tension of the surface active agents commonly employed in the textile industry. Pure polydimethylsiloxane suds suppressing performance is poor and slow, defoaming need to strengthen the silica particles, the foam is a silicone oil to the silica particles in the air - water interface and into the bubbles due to its hydrophobic film resistance, and the foaming surfactant droplet contact angle greater than 90 °, thereby forcing the foamable liquid from the discharge opening of solid hydrophobic particle surfaces, causing local foam rupture caused by rapid draining, so that the synergistic effect, consisting of two substances produced good defoaming effect. Because silicone defoamers defoaming excellent performance and other advantages, has been widely applied in many fields, especially in the textile dyeing and finishing, particularly rapid development, the study found, with polydimethylsiloxane and copolymers of polyethylene glycol as a base material of a silicone antifoaming agent, due to the special solubility, in jet dyeing and other textile processing, with the desired antifoaming effect.
The new self-emulsifying defoamers
Containing a special modified silicone. Has excellent heat resistance and acid resistance and chemical stability, over a wide temperature range is widely used in a variety of harsh foam elimination and suppression systems.

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