ABSTRACT

A simple, accurate and rapid construction method of superhydrophobic fabric coating was provided. Firstly, a homogeneous solution was obtained by dissolving a certain amount of silicone resin and polymethyl methacrylate (PMMA) in N,N-Dimethylformamide (DMF). Then, a nanocrystals solution system was made by adding ethanol to the homogeneous solution to induce the crystallization of PMMA. Finally, a superhydrophobic fabric coating was constructed by casting the nanocrystals solution on the surface of cotton cloth. “Tyndall effect”, scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), water contact angle (CA) and self-cleaning test were adopted to characterize the solution system and the coating. Results showed that the nanocrystals solution had obvious “Tyndall effect”. The water CA of the coating reached 153.1°, displaying obvious superhydrophobicity. Besides, concave-convex micro-nano structures were produced on the surface of the fabric coating and endowed it with good self-cleaning capacity.

摘要

提供了一种简单、准确、快速的超疏水织物涂层施工方法。首先，将一定量的有机硅树脂和聚甲基丙烯酸甲酯（PMMA）溶解在N,N-二甲基甲酰胺（DMF）中，得到均匀溶液。然后，通过向均匀溶液中加入乙醇以诱导 PMMA 结晶来制备纳米晶体溶液系统。最后，通过将纳米晶体溶液浇铸在棉布表面上构建了超疏水织物涂层。采用“廷德尔效应”、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）、水接触角（CA）和自清洁试验对溶液体系和涂层进行表征。结果表明纳米晶溶液具有明显的“廷德尔效应”。涂层的水CA达到153.1°，表现出明显的超疏水性。此外，织物涂层表面产生凹凸微纳米结构，赋予其良好的自清洁能力。