文献类型：期刊文献

英文题名：Robust Superhydrophobic and Repellent Coatings Based on Micro/Nano SiO2 and Fluorinated Epoxy

作者：Huang, Xiaoye[1];Yu, Ruobing[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：11

期号：6

外文期刊名：COATINGS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000666940300001)】；

语种：英文

外文关键词：superhydrophobic; oleophobic; click chemistry; silica; fluorinated epoxy

摘要：Superhydrophobic surfaces possess low mechanical strength, and can be easily contaminated by fluids with low surface tension, such as oil; this hinders their practical applications. In this study, fluorinated epoxy was prepared through the thiol-ene click reaction at first. The superhydrophobic surface with high oil-repellency was prepared by the addition of unmodified nano-SiO2 and micron-SiO2 to the fluorinated epoxy. The effect of the ratio of micro- and nano-silica particles on the morphology and wettability of the coating was investigated. It was shown that a re-entrant structure appears and FEP-S coating has good liquid repellency when the amounts of nano-SiO2 and micro-SiO2 are equal. The contact angles of the FEP-S coating (coating with the best liquid repellent performance) for water, glycerol, ethylene glycol, and diiodomethane were 158.6 degrees +/- 1.1 degrees, 152.4 degrees +/- 0.9 degrees, 153.4 degrees +/- 1.3 degrees, and 140.7 degrees +/- 0.9 degrees, respectively. In addition, the superhydrophobic coatings possess excellent mechanical and chemical durability, excellent performance in self-cleaning, corrosion resistance, and anti-icing properties. The preparation method of superhydrophobic coating is relatively simple; therefore, it has a wide range of applications and can also be applied to various substrates.