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Hydrophobic hybrid inorganic-organic thin film prepared by sol-gel process for glass protection and strengthening applications

✍ Scribed by Amir Ershad-Langroudi; Christian Mai; Gerard Vigier; Rene Vassoille

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 207 KB
Volume: 65
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970919)65:12<2387::aid-app11>3.0.co;2-z

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✦ Synopsis

Hybrid systems based on 3-trimethoxysilyl propyl methacrylate, tetramethylorthosilicate, and methyl methacrylate were developed for moisture protection and strengthening of glass objects. The hydrophobic behavior of the hybrid was obtained by adding different fluorinated precursors to the hybrid solution. Experimental results show that among different fluorinated percursors, 1H,1H,2H,2H-perfluorooctyl trichlorosilane gives the best results, increasing the water contact angle up to 100Њ and decreasing the free surface energy. Coated glasses exhibit higher strength (more than 50%) than uncoated glasses. The strengthening was interpreted in terms of a healing mechanism.

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