【作者】 徐丽慧； 蔡再生； 沈勇； 王黎明； 丁颖；

【Author】 XU Lihui;CAI Zaisheng;SHEN Yong;WANG Liming;DING Ying;College of Fashion, Shanghai University of Engineering Science;College of Chemistry, Chemical Engineering and Biotechnology, Donghua University;

【机构】 上海工程技术大学服装学院； 东华大学化学化工与生物工程学院；

【摘要】 采用水性溶胶-凝胶反应,制备超疏水纺织品。在表面活性剂作用下制备了含甲基纳米Si O₂（M-Si O₂）和十六烷基改性纳米Si O₂（H-Si O₂）水溶胶,分别采用两步法（即先用M-Si O₂水溶胶对棉织物浸轧处理,再进行低表面能修饰）、一步法浸轧H-Si O₂水溶胶,对棉织物进行超疏水整理。结果表明制备的M-Si O₂和H-Si O₂水溶胶较稳定,粒径分布较窄;而H-Si O₂水溶胶更容易在棉纤维表面引入致密的低表面能粗糙疏水膜;与两步法相比,一步法整理棉织物接触角达到152.1°,滚动角为8°,沾水等级100,具有工艺简单、节省原料、动态疏水效果更佳的优势。更多还原

【Abstract】 Methyl hybrid nano-silica（M-Si O₂） hydrosols and hexadecyl modified silica（H-Si O₂） hydrosols were synthesized via water-based sol-gel reaction in the presence of surfactant to obtain excellent supe-rhydrophobic surfaces. Super-hydrophobic cotton surfaces were prepared via two-step process of padding with M-Si O₂ nano-particles and subsequent low surface energy modification, and one-step process of padding with H-Si O₂ hydrosol, respectively. The obtained M-Si O₂ and H-Si O₂ hydrosols were stable and had narrow size distribution. It was much easier for H-Si O₂ hydrosol to introduce dense and rough hydrophobic films with low surface free energy onto the surface of cotton fibers. Compared with the two-step process to prepare superhydrophobic cotton fabrics, one-step process was simple and inexpensive. The cotton fabric treated by one-step process with better dynamic hydrophobicity had a water contact angle of 152.1°, a water roll-off angle of 8°, and water repellency rating of 100.更多还原