Abstract
AbstractEco‐friendly, easy, fast and scalable strategies for robust superhydrophobic coatings are of great significance for industrial application. Herein, a robust fluorine‐free superhydrophobic coating is prepared via spraying the mixed suspension which consist of silica nanoparticles and hydrophobic acid‐catalyzed silica sol. The adhesive which is synthesized through hydrolyzation and condensation of silane precursors (TEOS, MTMS, HDTMS) shows good compatibility with silica nanoparticles. When the mass ratio of SiO2/adhesive was 0.025 : 1, the prepared coating exhibited good non‐wettability with a WCA of 164° and a RA of 2°. Moreover, due to the hydrophobic acid‐catalyzed silica sol which bonds silica nanoparticles together, the coatings also demonstrate well mechanical robustness. After 60 g sand impacted on the surface of as‐prepared coating from a height of 1 m, the surface still showed superhydrophobicity with a WCA of 152° and a RA of 6°. And the as‐prepared coating could endure the sandpaper abrasion for 80 cm. Furthermore, the adhesion of as‐prepared coatings to substrates can reach the highest 5 A level. The current work provides an easy and promising approach to meet the challenges in practical applications simultaneously posed by the fluorine‐free, low‐cost, mechanical robustness as well as large‐scale preparation of silica‐based superhydrophobic coatings.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.