Water-in-oil emulsion defoaming agent as well as preparation method and application thereof

The invention discloses a water-in-oil emulsion defoaming agent as well as a preparation method and application thereof, and the method comprises the following steps: dissolving a part of an oil phase and all active matters, silicon dioxide and an emulsifier to obtain a mixed phase, mixing the mixed...

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Bibliographische Detailangaben
Hauptverfasser: TIAN KUN, YANG WEI, YANG FAN, YANG KAIZHU, WANG XUECHENG, GENG XUEHUI, GONG JIAQUAN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a water-in-oil emulsion defoaming agent as well as a preparation method and application thereof, and the method comprises the following steps: dissolving a part of an oil phase and all active matters, silicon dioxide and an emulsifier to obtain a mixed phase, mixing the mixed phase and the remaining oil phase in a ball mill, after ball milling is finished, dropwise adding a water phase, and stirring to obtain the defoaming agent. The stable water-in-oil emulsion can be prepared through grinding by introducing a weak shearing mode of ball milling and using a small amount of the emulsifier, and compared with a traditional mineral oil defoaming agent, the defoaming agent is lower in cost, the dosage of the emulsifier is reduced, the effect is better, and foams in water-based paint and ink can be effectively eliminated. 本发明公开了一种油包水乳液消泡剂及其制备方法和应用,所述方法包括以下步骤:将部分油相与全部的活性物、二氧化硅和乳化剂溶解得到混合相,将混合相和剩余油相于球磨机中混合,待球磨结束后,滴加水相搅拌即得消泡剂。本发明通过引入球磨的弱剪切方式,使用少量的乳化剂,即可研磨制备稳定的油包水乳液,相对于传统的矿物油消泡剂,本发明成本更低,乳化剂用量减少,且