Metal-organic framework superhydrophobic coating on Kevlar fabric with efficient drag reduction and wear resistance

摘要

Superhydrophobic layers are extremely essential for protecting material surface in various applications. In this study, a stable superhydrophobic mixed matrix surface with a 152.2 degrees contact angle can be fabricated through the technology of layer-by-layer hot-pressing (HoP), and then modified by 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOTES) on the ZIF-8@Kevlar fabric surface. The morphology and chemical composition were analyzed by the means of SEM, XRD and FTIR. The obtained superhydrophobic coatings showed excellent antiwear performance and drag reduction under desired working conditions. Moreover, we successfully applied superhydrophobic F-ZIF-8@Kevlar fabric in the alcohol adsorbent with high removal capacity, and it can be reused for several times without serious efficiency loss. (C) 2018 Elsevier B.V. All rights reserved.