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

被引：0
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作者：
Dongjiang Yang
Yao Xu
Lei Zhang
Shangru Zhai
Dong Wu
Yuhan Sun
机构：
[1] Chinese Academy of Sciences,State Key Laboratory of Coal Conversion, Institute of Coal Chemistry
[2] Graduate School of the Chinese Academy of Sciences,undefined
来源：
JCT Research | 2006年 / 3卷
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摘要：
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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页码：127 / 131
页数：4
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