纺织学报 ›› 2022, Vol. 43 ›› Issue (10): 126-132.doi: 10.13475/j.fzxb.20210807107

• 染整与化学品 • 上一篇    下一篇

三维超疏水超细纤维绒面革的仿生构建

高强1, 范浩军1(), 颜俊1, 陈玉国2, 郑萍2   

  1. 1.四川大学 皮革化学与工程教育部重点实验室, 四川 成都 610065
    2.山东天庆科技发展有限公司, 山东 德州 253000
  • 收稿日期:2021-08-18 修回日期:2022-07-14 出版日期:2022-10-15 发布日期:2022-10-28
  • 通讯作者: 范浩军
  • 作者简介:高强(1998—),男,硕士生。主要研究方向为功能超纤合成革材料的制备及工艺研究。
  • 基金资助:
    山东省重点研发计划(重大科技创新工程)项目(2019JZZY010355);清远市创新创业团队项目(清科[2018]31号)

Bionic construction of three-dimentional super hydrophobic microfiber suede leather

GAO Qiang1, FAN Haojun1(), YAN Jun1, CHEN Yuguo2, ZHENG Ping2   

  1. 1. Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, Sichuan 610065, China
    2. Shandong Tianqing Technology Development Co., Ltd., Dezhou, Shandong 253000, China
  • Received:2021-08-18 Revised:2022-07-14 Published:2022-10-15 Online:2022-10-28
  • Contact: FAN Haojun

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摘要：

为解决超细纤维绒面革二维超疏水表面耐久性差的问题,提出了一种三维超疏水超细纤维绒面革的构建方法。将含氟水基聚氨酯和纳米前驱体正硅酸乙酯的混合液均匀含浸至超细纤维非织造布中,在弱酸性条件下诱发纳米前驱体在超细纤维绒面革内部原位生成纳米SiO2颗粒,形成了整体具有自相似性的类荷叶微纳粗糙结构,仿生构建了三维超疏水超细纤维绒面革,并对其接触角、形貌特征、元素组成、摩擦耐久性和化学稳定性进行了测试与表征。结果表明:所制备的超细纤维绒面革表面水接触角高达153.5°;即使经受2 100次摩擦,浸泡在乙醇、对二甲苯、四氢呋喃、正己烷、pH值为1和14的水溶液中24 h,皂洗10次,紫外光照24 h,热处理后其水接触角均可保持在150°左右,显示出优异的超疏水稳定性。

关键词: 仿生, 超细纤维, 合成革, 绒面革, 超疏水, 自相似性

Abstract:

In order to tackle the poor durability of 2-D super hydrophobic microfiber suede leather, a construction method of 3-D super hydrophobic microfiber suede was proposed inspired by the hydrophobic structure of lotus leaf surface and the special 3-D network structure of microfiber nonwoven. The mixture of fluorine-containing waterborne polyurethane and nano precursor (tetraethoxysilane) was uniformly impregnated to superfine fiber nonwoven, and under weak acid conditions the nano precursor was induced to in-situ generate nano SiO2 particles inside the microfiber suede, which formed a lotus-like micro/nano rough surface with overall self-similarity. A 3-D super hydrophobic microfiber suede leather was bionically constructed, and its morphology, chemical composition, contact angle, friction durability and chemical stability were measured and characterized. The results show that the water contact angle of microfiber suede surface is up to 153.5°. After 2 100 times of abrasion, soaking for 24 h in aqueous solutions (pH=1 and 14) containing ethanol, p-xylene, tetrahydrofuran, and n-hexane, soap washing for 10 times, exposing to UV light for 24 h, and heat treatment, the water contact angle is still around 150°, demonstrating a durable 3-D super hydrophobicity.

Key words: bionic, microfiber, synthetic leather, suede leather, super hydrophobic, self-similarity

中图分类号: 

  • TS565

图1

3-D-SHMSL的制备流程图"

表1

不同TEOS质量分数的超细纤维绒面革的水接触角和滑动角"

TEOS质量分数/% 水接触角/(°) 滑动角/(°)
0.3 139.7 90
0.9 143.3 60
1.5 146.8 30
3.0 149.6 20
6.0 152.0 10
9.0 153.5 8
15.0 153.8 5
30.0 154.2 6

图2

不同样品的SEM照片"

图3

不同样品的XPS光谱"

图4

3-D-SHMSL表面、切面和截面上的水滴"

图5

3-D-SHMSL上不同区域的ATR-FTIR光谱"

图6

3-D-SHMSL不同位置的SEM照片"

图7

3-D-SHMSL不同位置的XPS光谱"

表2

3-D-SHMSL不同位置的相对元素含量"

样品 C O N Si F
表面 35.89 9.76 0.83 5.33 48.19
切面 35.68 11.32 0.63 5.68 46.69
截面 36.35 10.33 0.57 5.44 47.31

表3

水接触角、滑动角和摩擦次数的关系"

摩擦次数 水接触角/(°) 滑动角/(°)
0 152.80 8.0
200 150.97 6.0
400 152.47 7.5
600 150.35 6.5
800 151.25 7.2
1 200 153.75 7.6
1 800 150.50 7.9
2 100 152.00 7.7

图8

磨损后的3-D-SHMSL的SEM照片、XPS光谱"

图9

3-D-SHMSL不同介质中浸泡24 h后的水接触角"

表4

水接触角、滑动角和温度的关系"

温度/℃ 水接触角/(°) 滑动角/(°)
20 152.00 8.0
30 155.30 7.1
40 151.27 7.0
50 153.47 7.6
60 149.97 7.7
70 150.93 10.0
80 152.05 11.0
90 149.57 11.0

图10

水接触角和滑动角随紫外光照射时间的变化"

图11

水接触角和滑动角随洗涤次数的变化"

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