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Robust surface with thermally stable hydrophobicity enabled by electrosprayed fluorinated SiO2 particles

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Highly hydrophobic surface property is important for many applications, such as anticorrosion, antifogging, and antifouling. With regard to some practical applications, both mechanical endurance and thermal stability are essential. Here, we report a new method for making highly hydrophobic surfaces with simultaneously enhanced mechanical endurance and thermal stability. Such high-performance hydrophobic surfaces were prepared by coating electrospraying derived fluorinated SiO2 particles on various substrates, including glass slide, ceramic wafer, metal foil, and polymer sheet, with methyl silicone resin as the binder. Fluorinate silane was homogenously doped in the matrix of SiO2 particles, which can provide excellent protection effect. Meanwhile, the thermally stable methyl silicone resin can afford strong binding force between SiO2 particles and the substrates. Therefore, the hydrophobic surfaces created here possess both high mechanical endurance and excellent thermal stability.

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This work was financially supported by the National Natural Science Foundation of China (Grant No. 51872095), the Natural Science Foundation of Guangdong Province (Grant No. 2018A030313059), Key R&D Program of Guangzhou (No. 202007020003), and the Dean Foundation of China Academy of Engineering Physics (No. YZJJLX2017001).

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Correspondence to Zhijun Ma or Hang Zhang.

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Liu, H., Zhang, Y., Ma, Z. et al. Robust surface with thermally stable hydrophobicity enabled by electrosprayed fluorinated SiO2 particles. J Coat Technol Res 19, 347–353 (2022).

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