Disadvantages of silicone defoamers
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shortcoming:
1) Polysiloxane is difficult to disperse: Polysiloxane is difficult to dissolve in water, which hinders its dispersion in the water system. A dispersing agent must be added. If the dispersing agent is added, the emulsion will be stable and the defoaming effect will change. Poor, it is necessary to use less emulsifier to make the defoaming effect good and the emulsion stable.
2) Silicone is oil-soluble, which reduces its defoaming effect in the oil system.
3) Long-term high temperature resistance and poor alkali resistance
