纺织学报 ›› 2011, Vol. 32 ›› Issue (9): 89-94.

• 染整与化学品 • 上一篇    下一篇

改性SiO2水溶胶在棉织物超疏水整理中的应用

庄伟1,徐丽慧2,徐壁1,赵亚萍3,蔡再生3   

  1. 1. 上海市东华大学
    2. 上海东华大学
    3. 东华大学
  • 收稿日期:2010-08-27 修回日期:2010-12-14 出版日期:2011-09-15 发布日期:2011-09-15
  • 通讯作者: 蔡再生 E-mail:zshcai@dhu.edu.cn
  • 基金资助:

    教育部科学技术研究重点项目资助(No.109066);上海市引进技术的吸收与创新计划项目(No.08-118);国家级;市级

The research and application of modified silica hydrosol for superhydrophobic cotton fabrics

  • Received:2010-08-27 Revised:2010-12-14 Online:2011-09-15 Published:2011-09-15

摘要: 采用溶胶-凝胶法,以甲基三甲氧基硅烷为前驱体,氨水为催化剂,十六烷基三甲氧基硅烷为添加剂,在表面活性剂十二烷基苯磺酸钠作用下制备了改性纳米SiO2水溶胶,并将其成功应用于棉织物的超疏水整理。通过控制氨水用量和表面活性剂浓度,制备不同颗粒尺寸及粒径分布的改性SiO2水溶胶,讨论溶胶粒径大小及分布对棉织物拒水性的影响。采用扫描电镜、原子力显微镜、X射线光电子能谱仪对整理后棉织物进行测试,结果表明改性SiO2水溶胶沉积在棉织物表面,降低了织物表面能,并明显提高了棉织物表面粗糙度。拒水性能测试表明整理后棉织物与水的接触角(5µL)达到152.1°,滚动角(15µL)为8°,沾水等级为100,达到超疏水效果。整理后棉织物物理机械性能变化不大,但透气性略有下降。

Abstract: Modified silica hydrosol was prepared by water-based sol-gel method using methyltrimethoxysilane (MTMOS) as the precursor and hexadecyltrimethoxysilane (HDTMS) as a hydrophobic additive, in the presence of ammonia and the anionic surfactant sodium dodecyl benzenesulfonate (SDBS). Superhydrophobic cotton fabrics were successfully obtained by dip-coating the modified silica hydrosol. By controlling ammonia amount and surfactant concentration, the modified silica hydrosols with different particle sizes and PDIs were prepared. The effect of the SiO2 nanoparticle size and distribution on the water-repellent property of the treated cotton fabrics was discussed. The treated cotton fabrics were characterized by scanning electron microscopy (SEM), atomic force microscope (AFM), X-ray photoelectron spectroscopy (XPS). The results showed that the modified silica nanoparticles had been coated onto the cotton fiber surface, resulting in the lowered surface free energy and the increased surface roughness. The water-repellent property of the treated cotton fabrics were evaluated, and it was demonstrated that the water contact angle and water sliding angle of the treated fabric were respectively 152.1° for a 5µL droplet and 8° for a 15µL droplet, and the spray rating was 100, thus realizing superhydrophobicity. The physical and mechanical properties measurement of fabrics showed that there was a slight change after finishing except the permeability.

中图分类号: 

  • TS 195.57
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