Improved adhesion of superhydrophobic layer on metal surfaces via one step spraying method
By Dessouky, Wael I. El; Abbas, Rafik; Sadik, Wagih A.; Demerdash, Abdel Ghaffar M. El; Hefnawy, Ahmed
Published in Arabian Journal of Chemistry
2017
Abstract
Abstract Superhydrophobic metal substrates have been fabricated by a simple spraying method. The processes of decreasing surface free energy and increasing surface roughness have been accomplished in one step via the addition of functionalized silica (silica nano particles with octyltriethoxysilane) to adhesive polymer. The method is simple, cost-effective and can be applied on the large industrial scale. Scanning electron microscopy (SEM) was used for surface morphology analysis, showing the roughness produced by surface treatment. The wettability of the micro-nano silica film varied from hydrophilicity (water contact angle 88