端羟乙基硅油的合成及其在硅丙乳液制备中应用

纺织学报 ›› 2016, Vol. 37 ›› Issue (2): 112-118.

端羟乙基硅油的合成及其在硅丙乳液制备中应用

收稿日期:2015-10-09 修回日期:2015-11-12 出版日期:2016-02-15 发布日期:2016-02-22

Synthesis of dihydroxyethyl-terminated polysiloxane and its application in preparation of silicone-acrylate emulsions

Received:2015-10-09 Revised:2015-11-12 Online:2016-02-15 Published:2016-02-22

摘要/Abstract

摘要：

在氯铂酸催化下通过硅氢加成合成端羟乙基硅油（diHE-PDMS），并将其与端羟丙基硅油和羟基硅油分别用于硅丙乳液合成，比较了不同活性硅油对硅丙乳液合成的转化率、凝胶率、粒径及其分布、胶膜吸水率和印花织物表面形貌的影响，并测定了织物印花性能。结果表明：以diHE-PDMS为原料合成的1＃硅丙乳液具有纳米级粒径（115.7 nm），高单体转化率（98.60%）和极低凝胶率（＜0.01%）。印花织物表面形貌分析显示1＃硅丙聚合物和羟基硅油合成的3＃硅丙聚合物能较好地对颜料粒子进行包覆，但仍有少量颜料粒子未被端羟丙基硅油合成2＃硅丙聚合物所包覆。硅丙乳液印花的织物具有特别柔软的手感和更高的色牢度。

关键词: 聚硅氧烷, 硅丙乳液, 羟乙基, 涂料印花

Abstract:

Dihydroxyethyl-terminated polysiloxane (diHE-PDMS) was synthesized from dihydrogen-terminated polysiloxane and hydroxyethyl acrylate by hydrosilylation. Subsequently, diHE-PDMS, dihydroxypropyl-terminated polysiloxane and hydroxyl-terminated polysiloxane were applied in the synthesis of silicone-acrylate emulsion. The effect of polysiloxanes with different hydroxyl groups on the monomer conversion, gel rate, particle size and its distribution and the surface morphology of silicone-acrylate copolymers printed fabrics were studied. Properties of pigment printed cotton fabrics were also investigated. Silicone-acrylate emulsion synthesized using diHE-PDMS possesses small particle size (115.7 nm) and exhibited high monomer conversion (98.60%) and extremely low gel rate（＜0.01%). Surface morphology analysis of pigment printed fabrics showed that the pigment particles could be coated well when applying silicone-acrylate emulsions using diHE-PDMS and hydroxyl-terminated polysiloxane as the raw materials, and water asorption of their films was low (7.50%). Whereas there still existed a few pigment particles that have not been coated well by the silicone-acrylate copolymer when using dihydroxypropyl-terminated polysiloxane, and its water asorption is high (33.50%). Moreover, the addition of polysiloxane could remarkably improve the hand feeling of pigment printed fabrics.

Key words: polysiloxane, silicone-acrylate emulsion, hydroxyethyl group, pigment printing

樊武厚黄玉华韩丽娟蒲宗耀蒲实胡于庆. 端羟乙基硅油的合成及其在硅丙乳液制备中应用[J]. 纺织学报, 2016, 37(2): 112-118.

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