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A simple method for preparation of transparent hydrophobic silica-based coatings on different substrates

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Abstract

A facile, inexpensive, and general approach is explored for the fabrication of transparent silica/organic silicon hybrid sol, which could form transparent hydrophobic coatings on different substrates conveniently. The sol was prepared by using hexamethyldisilazane (HMDS) as a surface-modifying agent and the source of base catalyst required for the hydrolysis of tetraethoxysilane (TEOS). The resulting silica-based coatings on glass slide have shown an optical transmission over the visible range up to 89% (in reference to 100% transmission defined by a plain glass substrate) and high thermal stability. The water contact angle of the film reached 152○. Hydrophobic coatings with excellent optical transmittance were also successfully formed on writing paper and aluminum foils. The transparent hydrophobic silica-based hybrid sol will have potential applications in creating outdoor building glass, protecting paper files from moisture and preventing metals from corrosion.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Anhui University, Hefei, 230039, P.R. China

    Fang Wang, Xiufang Wang, Anjian Xie, Yuhua Shen, Wei Duan, Ye Zhang & Jialin Li

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  1. Fang Wang
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  2. Xiufang Wang
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  3. Anjian Xie
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  4. Yuhua Shen
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  5. Wei Duan
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  6. Ye Zhang
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  7. Jialin Li
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Correspondence to Yuhua Shen.

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Wang, F., Wang, X., Xie, A. et al. A simple method for preparation of transparent hydrophobic silica-based coatings on different substrates. Appl. Phys. A 106, 229–235 (2012). https://doi.org/10.1007/s00339-011-6566-y

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  • DOI: https://doi.org/10.1007/s00339-011-6566-y

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