Mechanically Robust Superhydrophobic Surfaces for Easy Removal of Pollutants
발표자
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초록
내용
Superhydrophobic surfaces which are a water contact angle of above 150° have several interesting features such as self-cleaning, anti-stain, anti-sticking and anti-icing properties. It is applicable to various industries such as outdoors, electronics, housewares and aerospace. However, their practical applications are limited due to vulnerability to abrasion. In this study, we present the superhydrophobic surfaces which contain an excellent abrasion resistance to solve the existing problem. The coating solution was prepared by sol-gel reaction of the hydrophobic silane compounds, followed by spray-coating on the substrate and then cured at 150°C. As a result, the surface exhibited higher contact angle(＞150°) and lower sliding angle(＜10°). This result is attributed to the combination of the low surface energy of the hydrophobic silane compounds and the surface micro/nanostructures created by their sol-gel reaction. It also exhibited very good wear resistance characteristics.