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Highly moisture-proof polysilsesquioxane coating prepared via facile sol-gel process

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Abstract

A highly moisture-proof polysilsesquioxane coating was obtained from a new bis-silylated precursor, which was synthesized from 3-aminopropyltriethoxysilane (APTES) and m-xylylene diisocyanate (m-XDI) in tetrahydrofuran (THF) and verified by 1H MAS NMR. For direct comparison purposes, an SiO2 coating was also prepared by the Stöber method using tetraethoxysilane (TEOS) as the reactant. Interestingly, the coating obtained from the polysilsesquioxane sol exhibited a much higher moisture resistance capability than its counterpart, which was attributed to its more compact feature between nanoparticles as characterized by N2 absorption experiment and transmission electron microscopy (TEM). Furthermore, its high transparency of about 92% showed potential for application in the protection of optical crystals.

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Authors and Affiliations

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, 030001, Taiyuan, P. R. China

    Dongjiang Yang, Yao Xu, Lei Zhang, Shangru Zhai, Dong Wu & Yuhan Sun

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  1. Dongjiang Yang
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  2. Yao Xu
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  3. Lei Zhang
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  4. Shangru Zhai
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  5. Dong Wu
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  6. Yuhan Sun
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Correspondence to Dongjiang Yang.

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Yang, D., Xu, Y., Zhang, L. et al. Highly moisture-proof polysilsesquioxane coating prepared via facile sol-gel process. J Coat. Technol. Res. 3, 127–131 (2006). https://doi.org/10.1007/s11998-006-0015-4

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  • DOI: https://doi.org/10.1007/s11998-006-0015-4

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