期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：186
期号：3
页码：012056
DOI：10.1088/1755-1315/186/3/012056
语种：English
出版社：IOP Publishing
摘要：Surface coarse structure is one of key factors affecting the superhydrophobicity, yet it's not very clear that what kind of structure is the best for hydrophobicity. Herein in order to study the effect of surface coarse structure, eight kinds of spherical SiO2 (20 nm, 60 nm, 200 nm, 500 nm, 1 μm, 2 μm, 5 μm and 10 μm) were taken as raw material respectively to explore the effect of particle size on the hydrophobic performance. SiO2 was deposited on the glass substrate layer by layer using the electrostatic assembly method based on the reaction of amino and epoxy groups. The sample's structure and properties were characterized respectively by scanning electron microscopy and contact angle measuring instrument. The relationship between SiO2 particle size and surface hydrophobicity was explored and the superhydrophobic stability were tested. The results show that the surface of SiO2 film layers are stacked together and arranged tightly, and when SiO2 particle size is the closer to 200 nm, surface hydrophobic property is the better. 200 nm SiO2 owns the best hydrophobicity, whose contact angle is 154.3 ° and sliding angle is 7.58 °.
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