Sol-gel processing of acid-catalyzed tetrabutoxytitanate, 3- glycidyl propyl trimethoxisilane and monomeric methyl methacrylate to produce titania-silica sol-gel optical coatings and matrix materials has been systematically studied. The coatings were deposited by dip-coating technique on glass substrates from a polymeric solutions, pseudo-ternary phase diagram were used to outline the regions of stability of the Ti(OC₄H₉)₄-C₂H₅OH-H₂O-HAC and Ti(OC₄H₉)₄-GPTMS-C₂H₅OH-H₂O-HAC system respectively. It was found that the stability of the system depend on the compositions, especially the molar ratio of [H₂O]/[Ti(OC₄H₉)₄]. The use of GPTMS allows a thicker coatings than is possible with the sol- gel films prepared from non-organically modified alkoxides.

Date Published: 20 February 1998
PDF: 4 pages
Proc. SPIE 3175, Third International Conference on Thin Film Physics and Applications, (20 February 1998); doi: 10.1117/12.300680

Published in SPIE Proceedings Vol. 3175:
Third International Conference on Thin Film Physics and Applications
Shixun Zhou; Yongling Wang; Yi-Xin Chen; Shuzheng Mao, Editor(s)