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日用化学工业（中英文）

日用化学工业 ›› 2014, Vol. 44 ›› Issue (5): 261-265.doi: 10.13218/j.cnki.csdc.2014.05.058

• 开发与应用 • 上一篇    下一篇

一种聚硅氧烷消泡剂的合成与应用研究

王敏, 郭睿, 刘龙伟, 王二蒙, 解传梅, 宋艳艳   

  1. 陕西科技大学 教育部轻化工助剂化学与技术重点实验室,陕西 西安 710021
  • 收稿日期:2014-01-09 发布日期:2019-04-10
  • 作者简介:王 敏(1989-),女,硕士研究生,电话:15249215335,E-mail:wangmin89.good@163.com。

Preparation and application of polysiloxane defoamer

WANG Min, GUO Rui, LIU Long-wei, WANG Er-meng, XIE Chuan-mei, SONG Yan-yan   

  1. Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education,Shaanxi University of Science and Technology,Xi'an,Shaanxi 710021,China
  • Received:2014-01-09 Published:2019-04-10

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摘要： 以氯铂酸为催化剂,烯丙醇聚氧乙烯聚氧丙烯醚(FB)、甲基丙烯酸十二烷基酯(LMA)和含氢硅油(PHMS)为原料,制得一种共改性硅油(PMS)。通过正交试验得到优化工艺条件为:n(Si-H)∶n(C=C)=1∶1.20,催化剂用量30 μg·g-1,反应温度90 ℃,反应时间6 h,此条件下转化率达93.45%。采用高速剪切乳化搅拌方式将水相在油相中进行乳化,制备出聚硅氧烷消泡剂,由应用测试得到优化配方为:硅膏质量分数10%,PMS质量分数6%,复合乳化剂(m(Span 60)∶m(Tween 60)∶m(OP-10)=3∶2∶1)质量分数4%,制备出的聚硅氧烷消泡剂稳定性好,其消抑泡性能优于市售同类产品。

关键词: 消泡剂, 聚醚改性硅油, 硅氢加成, 聚硅氧烷, 应用

Abstract: A kind of modified silicone oil (PMS) was synthesized by hydrosilylation with allyl alcohol polyethoxy polypropoxy ether (FB),lauryl methacrylate (LMA) and hydrosilicone oil (PHMS) as starting materials,as well as chloroplatinic acid as catalyst.Optimum reaction conditions were investigated via orthogonal designed experiments as:molar ratio,n(Si-H)∶n(C=C)=1∶1.20;dosage of catalyst,30 μg·g-1;reaction temperature,90 ℃ for 6 h.Under these conditions,the conversion achieves 93.45%.The polysiloxane defoamer was prepared by emulsifying of aqueous phase into the oil phase,which was composed of silicone oil paste,blended emulsifying agent and the prepared PMS in a high speed shearing emulsification mixer.The optimized formulation was obtained via application tests as:mass fraction of silicone oil paste,10%;mass fraction of PMS,6%;and mass fraction of blended emulsifying agent (composed of Span 60,Tween 60 and OP-10 with mass ratio of 3∶2∶1), 4%.The polysiloxane defoamer product shows good stability and its defoaming property and foam inhibition property is superior to other similar products.

Key words: defoamer, polyether modified silicone oil, hydrosilylation, polysiloxane, application

中图分类号: 

  • TQ423.95