Abstract
Research on antistatic superhydrophobic surfaces has attracted widespread attention in some fields. However, in the application of superhydrophobic materials, fabricating stable and practical superhydrophobic surfaces through facile and low-cost approaches still faces considerable challenges. Herein, a polyphenylene sulfide (PPS)-based antistatic superhydrophobic composite coating with a high water contact angle (166°) and a low sliding angle (2°) was fabricated on a Q345 steel surface through a simple spray-coating method without any modifier. Furthermore, the as-prepared superhydrophobic coating also displayed excellent superhydrophobicity for water droplets at different pH values, as well as self-cleaning, anti-fouling and anti-icing properties. Importantly, the superhydrophobic coating still exhibited superhydrophobicity after calcination at 350 °C for 1 h, indicating its outstanding thermal stability. Excellent antistatic and anticorrosion properties were obtained on the prepared coating surface, which allows the coating to be applied under harsh conditions. Benefiting from the above characteristics, compared with the commercial coating, the as-obtained antistatic superhydrophobic coating may be applied more widely in related fields.
Highlights
Metal materials are widely used in various fields because of their excellent comprehensive properties[1]
There are no significant differences between the two curves, indicating that sodium dodecylbenzene sulfonate (SDBS) has no obvious effect on the structure of CNFs
Compared with the CNFs, a new characteristic peak at 1462 cm−1 corresponds to the C = C stretching vibration in the benzene ring of SDBS and the absorption peaks at 1130 cm−1 and 675 cm−1 are assigned to the S = O stretching vibration of the benzenesulfonic acid group in SDBS[47]
Summary
Metal materials are widely used in various fields because of their excellent comprehensive properties[1]. Most of the reported surfaces were either modified with low surface energy modifiers or based on complex preparation processes, seriously hindering their further applications in practice These surfaces display poor thermally stable superhydrophobicity (below 200 ̊C), limiting the engineering value of them. A simple, modifier-free and efficient method is applied to prepare antistatic superhydrophobic coatings with good thermal stability on the surface of alloy steel. The technology involved combining mechanical mixing and spraying, which is potentially applicable to the large-scale fabrication of conductive superhydrophobic coatings Using this simple method, CeO2 particulates were fabricated by an oil bath method, and the surface roughness was achieved by blending CeO2 particulates and modified CNFs. Afterwards, a certain amount of PPS, PTFE and PDMS were added to the above mixed particles to generate a grey suspension, which could be used for spraying on the surface of alloy steel. It is believed that the processes elaborated in this article possess practical certain application value and reference significance for superhydrophobic research
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