纺织学报 ›› 2019, Vol. 40 ›› Issue (07): 85-89.doi: 10.13475/j.fzxb.20180708406

• 染整与化学品 • 上一篇    下一篇

自着色水性聚氨酯制备及其在棉织物涂层中的应用

徐艳, 籍晓倩, 陈坤林, 王潮霞   

  1. 江南大学 纺织服装学院, 江苏 无锡 214122
  • 收稿日期:2018-07-30 修回日期:2019-04-17 出版日期:2019-07-15 发布日期:2019-07-25
  • 通讯作者: 王潮霞
  • 作者简介:徐艳(1994-),女,硕士生。主要研究方向为功能聚氨酯制备及性能研究。
  • 基金资助:
    国家自然科学基金项目(21174055)

Synthesis of self-colored waterborne polyurethane and its application in coating of cotton fabric

XU Yan, JI Xiaoqian, CHEN Kunlin, WANG Chaoxia   

  1. College of Textiles and Clothing, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2018-07-30 Revised:2019-04-17 Online:2019-07-15 Published:2019-07-25
  • Contact: WANG Chaoxia

摘要:

为解决低分子染料的耐热迁移性差和涂层色浆配制时外添加涂料、染料等着色剂的烦琐性,将1-氨基-4-羟基-2(6-羟基己氧基)蒽醌通过共价键引入水性聚氨酯骨架中合成端羟基自着色水性聚氨酯。借助红外光谱仪、紫外-可见光谱仪和热重分析仪研究了自着色水性聚氨酯的化学结构和热稳定性。考察了蒽醌发色体质量分数、固化剂质量分数和焙烘条件对涂层棉织物K/S值、色牢度和手感的影响。结果表明:随着自着色水性聚氨酯制备过程中蒽醌发色体质量分数增加,涂层棉织物K/S值增大;当固化剂质量分数为20%,于150 ℃焙烘5 min,涂层棉织物K/S值为5.20,干、湿摩擦色牢度为4~5级,褪色牢度为3~4级,沾色牢度为4~5级,手感为3级。

关键词: 水性聚氨酯, 发色体, 涂层, 固化剂, 自着色, 棉织物

Abstract:

Hydroxyl terminated self-colored waterborne polyurethane was synthesized by covalently bonding 1-amino-4-hydroxy-2-(6-hydroxy-hexyloxy) anthraquinone into waterborne polyurethane skeleton to solve the poor thermal migration of low molecular dye and complexity of pigment, dye or extra colorant for coating slurry. The chemical structure and thermal stability were studied by Fourier transform infrared spectrometer, ultraviolate-visible spectrometer and thermal gravity analysis. The effects of chromophore mass fraction, curing agent mass fraction and baking conditions on K/S value, color fastness and hand feeling were investigated. Results show that the K/S value of coated cotton fabric increases with the increase of anthraquinone chromophore dosages in the preparation of self-colored waterborne polyurethane. The K/S value of coated cotton fabric is 5.20 under the condition of 20% curing agent and baking at 150 ℃ for 5 min. The dry rubbing fastness and wet rubbing fastness are 4-5 grade. The fading fastness can reach 3-4 grade and staining fastness is 4-5 grade. The hand feeling is 3 grade.

Key words: waterborne polyurethane, chromophore, coating, curing agent, self-color, cotton fabric

中图分类号: 

  • TS195.597

图1

自着色水性聚氨酯红外光谱"

图2

自着色水性聚氨酯的紫外-可见光光谱"

图3

自着色水性聚氨酯热稳定性"

表1

发色体质量分数对涂层织物颜色参数的影响"

涂层织物 K/S L* a* b* C* h°
PU1 0.70 76.59 34.05 5.48 34.49 9.15
PU2 2.66 62.36 49.18 9.12 50.01 10.51
PU3 4.13 58.00 54.77 11.52 55.96 11.87
PU4 4.56 55.39 53.51 10.26 54.48 10.85

表2

不同质量分数发色体涂层织物色牢度和手感"

涂层
织物
摩擦牢度/级 皂洗牢度/级 手感/级
湿 棉沾色 褪色
PU1 4~5 4~5 4~5 2 3
PU2 4~5 4~5 4~5 2~3 3
PU3 4~5 4 4~5 3 3
PU4 4~5 4 4~5 3 3

图4

固化剂质量分数对涂层织物K/S值影响"

表3

固化剂质量分数对涂层织物色牢度和手感的影响"

固化剂
质量分数/%
摩擦牢度/级 皂洗牢度/级 手感/级
湿 棉沾色 褪色
0 4~5 2~3 4~5 1 4
5 4~5 3 4~5 2 4
10 4~5 4 4~5 3 3
15 4~5 4~5 4~5 3 3
20 4~5 4~5 4~5 3~4 3

图5

织物表面微观形貌(×1 000)"

表4

焙烘条件对涂层织物色牢度和手感的影响"

焙烘条件 K/S 摩擦牢度/级 皂洗牢度/级 手感/
温度/
时间/
min
湿 棉沾色 褪色
130 3 5.49 4~5 2~3 4~5 1 3
130 5 5.25 4~5 3 4~5 1 3
150 3 5.29 4~5 4 4~5 2 3
150 5 5.20 4~5 4~5 4~5 3~4 3
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