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Open AccessFeature PaperArticle

The Synthesis of a Superhydrophobic and Thermal Stable Silica Coating via Sol-Gel Process

IK4-Tekniker, Surface Chemistry and Nanotechnology Unit, Calle Iñaki Goenaga 5, 20600 Gipuzkoa, Spain
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Coatings 2019, 9(10), 627; https://doi.org/10.3390/coatings9100627
Received: 27 June 2019 / Revised: 26 September 2019 / Accepted: 26 September 2019 / Published: 28 September 2019
(This article belongs to the Special Issue Surfaces and Interfaces for Renewable Energy)
A super-hydrophobic surface at a high temperature (400 °C) using the sol-gel method with tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as precursors has been obtained. The effects of the coatings’ ages, deposited times and thicknesses on the hydrophobicity of the silica coatings have been analysed. The morphology, chemical composition, thermal degradation and hydrophobicity of the resulting surfaces have been studied by scanning electron microscopy (SEM), Fourier transfer infrared spectrometer (FT-IR), Thermogravimetry (TGA) and water contact angle (WCA) measurement. The results show that an average water contact angle of 149° after been cured at 400 °C for a coating aged for 5 days, and four deposition cycles using a dipping rate of 1000 mm/min was achieved. View Full-Text
Keywords: superhydrophobic surface; sol-gel; silica coating; temperature stability superhydrophobic surface; sol-gel; silica coating; temperature stability
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MDPI and ACS Style

Vidal, K.; Gómez, E.; Goitandia, A.M.; Angulo-Ibáñez, A.; Aranzabe, E. The Synthesis of a Superhydrophobic and Thermal Stable Silica Coating via Sol-Gel Process. Coatings 2019, 9, 627.

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