Method for improving foam suppression performance of organosilicone emulsion

Abstract

The invention discloses a method for improving the foam suppression performance of organosilicone emulsion. The method is characterized by comprising the following steps: adding hydrophilic white carbon black into silicon polyester during preparation; and uniformly dispersing the hydrophilic white carbon black into the silicon polyester through chemical reaction, wherein the viscosity of the silicon polyester is increased, and the surface tension of the partial region of a bimolecular membrane layer of the silicon polyester is unstable because of solid particles, so that the bimolecular membrane layer is cracked; and therefore, the foaming capacity of the silicon polyester is reduced. The stability and foam suppression performance of an organosilicone emulsion defoamer prepared by the modified silicon polyester are remarkably improved.

Description

technical field

[0001] The present invention relates to a method for improving the antifoaming performance of silicone emulsion. More precisely, the present invention utilizes the surface hydroxyl groups of hydrophilic silica to form hydrogen bonds on silicon polyether to increase viscosity, and at the same time reduce the silicon polyether The foaming ability, the stability and the anti-foaming performance of the organosilicon defoamer prepared by using the treated silicon polyether are obviously improved. The defoamer belongs to the additive of fine chemicals, therefore, the present invention belongs to the technical field of fine chemicals. Background technique

[0002] Silicon polyether is prepared from polyether modified silicone, and has important applications in many industries of the national economy. Acts as emulsifier and dispersant in defoamer.

[0003] Silicone defoamer is a silicon-containing surfactant. As a silicone defoamer, its application fields are also ...