ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Three kinds of colloidal silica (CS)/silane sol solutions were synthesized in variation withparameters such as different acidity and reaction time. Sol solutions were prepared from HSA CS/methyltrimethoxysilane (MTMS), LS CS/MTMS and LS CS/MTMS/γ -Glycidoxypropyltri methoxysilane(ES) solutions. In order to understand their physical and chemical properties, sol-gel coating filmswere fabricated on glass. Coating films on glass, obtained from LS/MTMS sol, had high contact angle,also, much enhanced flat surface in the case of LS/MTMS sol was observed in comparison with HSA/MTMS sol. From all sol-gel solutions, seasoning effect of for enhancing properties of sol-gel coatinglayer on glass was observed while such sol-gel solutions were left for 7days. In initial stage of sol-gelreaction, all most of sol solutions used in this work seem to be unstable, formation of coating films was alittle hazy and rough. However, improved coating films as observed in 4days later. LS/MTMS/ES solsolutions were synthesized with ES, adding to LS/MTMS sol. Contact angle of LS/MTMS/ES sol-gelcoating films decreased, since ES played a role in forming hydrophilic hydroxyl sol. The elastic portion ofcoating films prepared from LS/MTMS/ES sol increased with addition of ES, but thermal stabilitydecreased a little
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2278.pdf
