材料科学
单层
扫描电子显微镜
表面张力
表面能
化学工程
基质(水族馆)
接触角
表面改性
复合材料
X射线光电子能谱
高分子化学
纳米技术
物理
地质学
工程类
海洋学
量子力学
作者
Taolin Liu,Fanxin Kong,Wentao Mao,Qinggang Kong,Fanhua Kong,Haiyan Qian
摘要
Superamphiphobic surfaces have been arousing great attention in recent years for improved durability in practical applications. In this study, composites of dual‐sized porous silicas of micro‐/nanoparticles and silicic acid binder were coated on the glassy substrate as the micro‐/nano‐structure, then 60 nm porous silica particles modified by 3‐aminopropyltriethoxysilane (APTS) were coated. With the aid of the efficient, rapid, and stoichiometric reaction of amino group and epoxy group, the monolayer low‐surface‐energy long perfluorinated chains self‐assembled in the surface. Field emission scanning electron microscope (FESEM) and atomic force microscopy (AFM) verified the concave–convex surface topological features. This surface realized super‐repellency to liquids (surface tension ranging from 72.0 to 27.2 mN/m). This surface sustains superamphiphobicity after 15 times of the tape tearing test. After soaking in base (pH = 14), acid (pH = 1), and n ‐heptane for 20 days, this surface still holds superamphiphobicity. Its heat‐resistant ability is so outstanding that it keeps superamphiphobicity after drying for 3 h at 250°C.
科研通智能强力驱动
Strongly Powered by AbleSci AI