3 years ago

Roll-to-Roll Manufacturing of Robust Superhydrophobic Coating on Metallic Engineering Materials

Manufacturing of Robust Superhydrophobic Coating on Metallic Engineering
Shuliang Dong, Chaoliang Tan, PingAn Hu, Jia Zhang, Yong Qing Fu, Zhenlong Wang, Bin Guo, Yukui Wang, Xuelin Bai
Creating a robust superhydrophobic surface on the conventional engineering materials at mass production is of great importance for a self-cleaning, anti-icing, nonwetting surface and low flow resistance in industrial applications. Herein, we report a roll-to-roll strategy to create durable and robust superhydrophobic surfaces with designed micro-/nanoscale hierarchical structures on many conventional engineering materials by combining electrical discharge machining and coating of carbon nanoparticles, followed by oil penetration and drying. The treated surface shows good superhydrophobic properties with a static water contact angle of 170 ± 2° and slide angle of 3 ± 1°. The treated surface also exhibits good resilience and maintains the performance after being tested in various harsh conditions, including water flushing for several days, sand abrasion, scratching with sandpapers, and corrosive solution. Significantly, the superhydrophobic surfaces also show a high efficiency of self-cleaning properties even after oil contamination during applications.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b16251

DOI: 10.1021/acsami.7b16251

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