Disadvantages of organosilicon defoamers

(1) Polysiloxane is difficult to disperse. Polysiloxane is difficult to dissolve in water, which hinders its dispersion in the water system. Dispersants must be added. If more dispersants are added, the lotion will be stable, and the defoaming effect will become worse. Emulsifiers must be used less to make its defoaming effect good and the lotion stable.
(2) Organic silicon is oil soluble, which reduces its defoaming effect in oil systems.
(3) Long term high temperature resistance and poor resistance to strong alkalinity.