纺织学报 ›› 2012, Vol. 33 ›› Issue (2): 26-31.

• 纤维材料 • 上一篇    下一篇

水性聚氨酯的合成及其在棉织物表面的应用

 念以亭, 张志英, 单建林, 唐亚新, 董知之, 肖长发   

  1. 1. 天津工业大学 材料科学与工程学院
    2. 保定市万达环境技术工程有限公司
  • 收稿日期:2011-03-07 修回日期:2011-06-26 出版日期:2012-02-15 发布日期:2012-02-15
  • 通讯作者: 张志英 E-mail:z.zhang@tjpu.edu.cn

Waterborne polyurethane: synthesis and its application on cotton fabrics surface

 NIAN  Yi-Ting, ZHANG  Zhi-Ying, DAN  Jian-Lin, TANG  Ya-Xin, DONG  Zhi-Zhi, XIAO  Chang-Fa   

  • Received:2011-03-07 Revised:2011-06-26 Online:2012-02-15 Published:2012-02-15

摘要: 采用聚碳酸酯二醇(PCDL)、二羟甲基丙酸(DMPA)、异佛尔酮二异氰酸酯(IPDI)为预聚原料,三羟甲基丙烷(TMP)为扩链剂合成具有交联结构的水性聚氨酯多元醇分散体,与多异氰酸酯固化剂组成双组份水性聚氨酯涂层,并将其应用于纯棉织物表面以研究涂层对棉织物耐水性能的影响,实验对涂层织物进行了扫描电镜(SEM)、表面接触角和吸水率测试。结果表明,经过处理的织物表面纤维束都被涂层粘附在一起,表面具有很好的疏水性,对水的接触角可以达到130°,而且织物吸水率降低至9%,另外经过处理的织物还具有很好的耐水洗性,在反复经过水洗12次后,其接触角仍能达到90°以上,吸水率比处理前也要小得多。

Abstract: Two-component waterborne polyurethane coating consists of a polyisocyanate as a curing agent and a dispersion polyol of aqueous crosslinked polyurethane, which was synthesized by using polycarbonate diol(PCDL), dimethylol propionic acid(DMPA) and isophorone diisocyanate(IPDI) as preplolymerization material and then extended with trimethylol propane(TMP). It was applied on cotton fabrics surface in order to research the effect of polyurethane coating on cotton fabrics water resistance, the treated cotton fabrics was characterized with scanning electron microscopy(SEM), contact angle and water absorption analysis. The results indicate that the fiber bundles of treated cotton fabrics surface is tightly conglutinated together, it shows very good hydrophobicity, the contact angles for water can reach 130°, and the water absorption of treated cotton fabrics decrease to 9%. In addition, it also shows good washing durability, the contact angles still reach 90° even after 12 washing cycles and the water absorption is much smaller.

中图分类号: 

  • TQ320.67
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