纺织学报 ›› 2014, Vol. 35 ›› Issue (12): 24-0.

• 纤维材料 • 上一篇    下一篇

端羟丙基含氟聚硅氧烷的合成及其改性水性聚氨酯性能

洪国沈,吴明华,方雨婷,刘彦杰,宋伟   

  • 收稿日期:2013-10-17 修回日期:2014-05-05 出版日期:2014-12-15 发布日期:2014-12-16
  • 通讯作者: 吴明华 E-mail:wmh@zstu.edu.cn

Synthesis of hydroxyl terminated fluorinated polysiloxane and property of its modified waterborne polyurethane

  • Received:2013-10-17 Revised:2014-05-05 Online:2014-12-15 Published:2014-12-16
  • Contact: Ming-Hua Wu E-mail:wmh@zstu.edu.cn

摘要: 采用端氢含氟聚硅氧烷和烯丙基醇为原料,以氯铂酸为催化剂,经硅氢加成合成端羟丙基含氟聚硅氧烷,并应用于改性水性聚氨酯。研究了合成因素对双键转化率的影响,优化了合成工艺条件,采用傅里叶红外(FTIR)、核磁(1H-NMR)以及凝胶渗透色谱(GPC)对合成产物结构加以表征,并测定了改性水性聚氨酯乳液、胶膜和涂层织物的性能。结果表明,副反应抑制剂能有效抑制硅氢加成反应的副反应。端羟丙基含氟聚硅氧烷合成优化工艺条件为:副反应抑制剂用量0.2%,催化剂用量60ppm,反应温度75℃,反应时间4h。改性水性聚氨酯乳液粒径为45nm,胶膜水接触角及吸水率分别为106.8°和28.1%。相对未改性水性聚氨酯,改性水性聚氨酯涂层织物拒水性得到明显改善。

Abstract: Hydroxypropyl terminated fluorinated polysiloxane was synthesized via hydrosilylation by hydrogen terminated fluorinated polysiloxane and allyl alcohol as raw material and chloroplatinic acid as catalyst, and applied in preparing for modified waterborne polyurethane. Influence of synthetic factors on the double bond conversion were researched, the synthesis conditions were optimized, the chemical structure of synthesis product was characterized by FTIR、1H-NMR and GPC, the properties of emulsion and film of modified waterborne polyurethane and coated fabric were measured. The results showed that the side reaction inhibitor could effectively prevent for the side reaction. the optimal synthesis conditions of hydroxypropyl terminated fluorinated polysiloxane were that the dosage of side reaction inhibitor was 0.2 %, the dosage of catalyst was 60ppm, the reaction temperature was 75 ℃, and reaction time was 4 h. The particle size of the emulsion of waterborne polyurethane was 45nm, the water contact angle and the water absorption of the film were 106.8 °and 28.1 % respectively. Compared with the unmodified polyurethane, the water resistance of the fabric coated with modified waterborne polyurethane was improved significantly.

中图分类号: 

  • TS195.2
[1] 陈和春 尹桂波. 双元配体转光剂的合成及其在防紫外线织物中的应用[J]. 纺织学报, 2014, 35(5): 83-0.
[2] 董威 吴明华 陈金辉 戴霞. 新型聚酯聚醚共聚型亲水整理剂的合成及性能研究[J]. 纺织学报, 2011, 32(10): 73-0.
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