文献类型：期刊文献

英文题名：Design and fabrication of vapor-induced superhydrophobic surfaces obtained from polyethylene wax and silica nanoparticles in hierarchical structures

作者：Guan, Yong[1];Yu, Chenchen[1];Zhu, Jiawen[1];Yang, Rui[1];Li, Xiang[1];Wei, Dafu[1];Xu, Xiang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2018

卷号：8

期号：44

起止页码：25150

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20182905579773);WOS:【SCI-EXPANDED(收录号:WOS:000438939300053)】；

基金：The authors are grateful for the financial support from the National Natural Science Foundation of China (51573043), The Key Laboratory of Advanced Polymer Materials of Shanghai (Grant No. ZD 20170203) and Shanghai Leading Academic Discipline Project (B502).

语种：英文

外文关键词：Durability - Polyethylenes - Crosslinking - Silica nanoparticles - Cleaning - Fabrication - Composite coatings

摘要：The present work reported a simple and effective approach to fabricate a low-cost, self-cleaning and mechanically durable superhydrophobic coating. The coating was prepared by dip-coating certain substrates in an ethyl acetate suspension of silica nanoparticles (SiO2), hydroxyl acrylic resin, cross-linking agent and polyethylene wax (PEW). Through the control of the cooling and drying process, vapor-induced PEW micro-clusters were formed on the surfaces during the evaporation of ethyl acetate, and uniform carpet-like hierarchical structures were finally obtained by properly adjusting the dosage of PEW. Under the synergistic effect of hydrophobic SiO2 nanoparticles and PEW micro-clusters, the composite coating exhibited a remarkable superhydrophobicity with a contact angle of 163 degrees +/- 5 degrees with 25 wt% content of PEW, as well as preeminent self-cleaning properties against various food liquids. Moreover, the coating still maintained its surface cleanliness when immersed in the cyclohexane or hexadecane, indicating a superior self-cleaning property against solvent-contamination. The mechanical durability test showed that the coating still kept its excellent water repellency after fairly intensive knife-scratching, tape peeling and 25 cycles of sandpaper abrasion under 100 g of loading, indicating a quite admirable mechanical durability. The facile preparation and high-performance of the coating make it quite suitable for manufacture on a large scale, which is favorable for the development of superhydrophobic coatings.