聚醚有机硅的合成及其在消泡剂中的应用  

Synthesis of polyether silicone and its application in defoamer

作　　者：安秋凤[1] 郭锟[1] 李歌[1] 李浩[1] 

机构地区：[1]陕西科技大学轻化工助剂化学与技术教育部重点实验室,陕西西安710021

出　　处：《纺织学报》2009年第6期90-94,共5页Journal of Textile Research

基　　金：陕西省科学技术研究发展计划项目(2006K07-G22);陕西科技大学创新团队项目(SUST-B23);陕西省教育厅产业化项目(075C04)

摘　　要：为减少工艺流程中的有害泡沫,研制了一种聚醚有机硅消泡剂。在Pt催化剂的作用下,利用端基含氢硅油与烯丙基聚醚发生硅氢加成反应制备聚醚有机硅(PESO),并对其进行结构表征和应用。探讨不同结构的PESO对消泡剂性能的影响,结果表明:端基型烯丙基聚氧乙烯醚有机硅复配的消泡剂具有水分散性好,消泡迅速,抑泡时间长等特点,尽管消泡剂的抑泡性能随PESO数均分子质量的增大可得到明显改善,但同时消泡剂的外观效果及贮存稳定性受到了很大的限制。A defoamer of polyether silicone was prepared for reducing the bad foam in technological process. In the presence of Pt catalyst, methyl end-group hydrogen silicone （PHMS） reacted with propylene-polyether ether to form a polyether silicone （PESO）. Chemical structures of PESO and their performance were characterized. The effects of PESO with different structures on the defoaming ability were investigated. Experiment results showed that end-group polyethylene siloxane is characterized by better water-solubility, speedy defoaming, and long-term inhibitation of foam. Though the foam inhibiting ability improves obviously with increasing the molecular weight of PESO, its appearance and storage stability are influenced.

关 键 词：聚醚有机硅 复配 消泡剂 应用 

分 类 号：O632.32[理学—高分子化学] TQ264.17[理学—化学]