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SiO2(MSiO2)和十六烷基改性纳米SiO2(H-SiO2)水溶胶,分别采用二步法(即先用M-SiO2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-SiO2水溶胶,对棉织物进行超疏水整理。结果表明,制备的M-SiO2和H-SiO2水溶胶较稳定,粒径分布较窄;而H-SiO2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;与二步法相比,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。
Methyl hybrid nano-silica（M-SiO2） hydrosols and hexadecyl modified silica（H-SiO2） hydrosols are synthesized via wa- ter-based sol-gel reaction in the presence of surfactants to get excellent superhydrophobic surfaces. Superhydrophobic cotton surfaces are prepared via two-step process of padding with M-SiO2 nanoparticles and subsequent low surface energy modifica- tion, and one-step process of padding with H-SiO2 hydrosol respectively. Obtained M-SiO2 and H-SiO2 hydrosols are stable and show narrow size distribution. It is much easier for H-SiO2 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, one-step process is simple and in- expensive. The cotton fabric treated with one-step process features better dynamic hydrophobicity with water contact angle of 152.1°, water roll-off angle of 8° and water repellency rating of 100.
出处
《印染》
北大核心
2014年第5期5-9,共5页
China Dyeing and Finishing
基金
2013年上海高校青年教师培养资助计划项目(ZZGJD13038)
