自修复光致变色聚氨酯复合织物的制备与性能

李含; 郭阳; 白松; 吴焕岭; 林玲; 冒海燕

doi:10.13801/j.cnki.fhclxb.20231214.004

自修复光致变色聚氨酯复合织物的制备与性能

doi: 10.13801/j.cnki.fhclxb.20231214.004

盐城工学院　纺织服装学院，盐城 224051

基金项目: 国家自然科学基金青年项目(52103067)；江苏省自然科学基金项目(BK20191045)

详细信息

通讯作者:
冒海燕，博士，副教授，研究方向为刺激响应性聚氨酯的制备及应用　E-mail：maohaiyan@ycit.edu.cn

中图分类号: TB332
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- 被引次数: 0
出版历程
- 收稿日期: 2023-10-24
- 修回日期: 2023-11-25
- 录用日期: 2023-12-01
- 网络出版日期: 2023-12-15
- 刊出日期: 2024-08-15

Preparation and properties of self-healing photochromic polyurethane composite fabric

School of Textile & Clothing, Yancheng Institute of Technology, Yancheng 224051, China

Funds: National Natural Science Foundation of China (52103067); Natural Science Foundation of Jiangsu Province (BK20191045)

摘要

摘要: 为提高光致变色涂层织物耐用性能，采用光致变色微胶囊(PM)与两性离子聚氨酯(ZPU)制备PM/ZPU薄膜，并热压到棉织物上得到自修复光致变色PM/ZPU复合织物。对PM/ZPU复合织物的结构和形貌进行表征，并详细探讨了PM/ZPU复合织物的光致变色性能、自修复及回收利用能力。结果表明：经紫外光照射后，PM/ZPU复合织物的最大吸收波长由470 nm转移到530 nm，颜色由黄橙色变为红褐色，且具有良好的耐疲劳性能；基于两性离子的动态可逆性，PM/ZPU复合织物划痕可以在80℃下完全修复，断裂的复合织物在60℃下的粘合强度达到1.47 MPa，展现了优异的自修复性能；通过简单的溶解法可将废弃织物上的涂层进行回收并再利用，重新制备PM/ZPU复合织物依然具有良好的光致变色性能。
- 聚氨酯 /
- 光致变色 /
- 自修复性能 /
- 回收再利用 /
- 复合织物
Abstract: In order to improve the durability of photochromic coated fabrics, the photochromic microcapsules (PM) and zwitterionic polyurethane (ZPU) were used to prepare PM/ZPU films, which were then hot-pressed onto cotton fabrics to obtain the self-healing PM/ZPU composite fabrics. The structure and morphology of PM/ZPU composite fabric were characterized, and the photochromic properties, self-healing and recycling ability of PM/ZPU composite fabric were discussed in detail. The results show that the maximum absorption wavelength of PM/ZPU composite fabric changes from 470 nm to 530 nm, the color changes from yellow-orange to reddish-brown, and the fabric has good fatigue resistance. Based on the dynamic reversibility of zwitterionic, the scratches of PM/ZPU composite fabric can be completely repaired at 80℃, and the bond strength of the fractured composite fabric reaches 1.47 MPa at 60℃, showing excellent self-healing properties. The coating on the waste fabric can be recycled and reused by a simple dissolution method, and the PM/ZPU composite fabric can still be prepared with good photochromic properties.
- polyurethane /
- photochromism /
- self-healing property /
- recycling /
- composite fabric

HTML全文

图 1 (a) 两性离子聚氨酯(ZPU)的合成；(b) 光致变色微胶囊(PM)/ZPU复合织物的制备

Figure 1. (a) Synthesis of zwitterionic polyurethane (ZPU); (b) Preparation of photochromic microcapsules (PM)/ZPU composite fabric

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图 2 ZPU复合织物和PM/ZPU复合织物的红外图谱

Figure 2. FTIR spectra of ZPU and PM/ZPU composite fabrics

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图 3 复合织物的表面((a), (b))、截面((a'), (b')) SEM图像和复合织物的EDS图像(c)

Figure 3. SEM images of the surface ((a), (b)) and cross-sectional ((a'), (b')) for composite fabrics, and EDS image (c) of composite fabrics

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图 4 纯棉织物(a)、ZPU复合织物(b)、PM/ZPU复合织物(c)的接触角

Figure 4. Contact angle of pure cotton fabric (a), ZPU composite fabric (b), PM/ZPU composite fabric (c)

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图 5 PM/ZPU复合织物在室温(a)和90℃ (b)下的透气性

Figure 5. Permeability of PM/ZPU composite fabrics at room temperature (a) and 90℃ (b)

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图 6 (a)不同压力下PM/ZPU复合织物正反面的K/S值；(b)在最大吸收波长处的K/S值

Figure 6. (a) K/S values of the front and back surfaces of PM/ZPU composite fabrics under different pressures; (b) K/S value at maximum absorption wavelength

K—Absorption coefficient; S—Scattering coefficient

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图 7 (a) 复合织物随紫外光照射时间变化的K/S曲线；(b) 完全变色后复合织物随时间褪色的K/S曲线；(c) PM可逆光致变色机制

Figure 7. (a) K/S curves of PM/ZPU composite fabric with UV irradiation time; (b) K/S curves of composite fabric fading with time after complete discoloration; (c) Reversible photochromic mechanism of PM

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图 8 PM/ZPU复合织物的耐疲劳性

Figure 8. Fatigue resistance of PM/ZPU composite fabrics

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图 9 复合织物划痕在不同温度下的自修复情况及机制

PU—Polyurethane

Figure 9. Self-healing process and mechanism of composite fabric under varied temperatures

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图 10 PM/ZPU复合织物断片自修复能力

Figure 10. Self-healing ability of PM/ZPU composite fabric fragments

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图 11 PM/ZPU复合织物的可回收性和再利用性

Figure 11. Recyclability and reusability of PM/ZPU composite fabrics

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