Properties of Nano-Hybrid Sol-Gel Materials Synthesized from Colloidal Silica-Silane Containing Epoxy Silane

Abstract:

Article Preview

Three kinds of colloidal silica (CS)/silane sol solutions were synthesized in variation with parameters 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 films were 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 coating layer on glass was observed while such sol-gel solutions were left for 7days. In initial stage of sol-gel reaction, all most of sol solutions used in this work seem to be unstable, formation of coating films was a little hazy and rough. However, improved coating films as observed in 4days later. LS/MTMS/ES sol solutions were synthesized with ES, adding to LS/MTMS sol. Contact angle of LS/MTMS/ES sol-gel coating films decreased, since ES played a role in forming hydrophilic hydroxyl sol. The elastic portion of coating films prepared from LS/MTMS/ES sol increased with addition of ES, but thermal stability decreased a little.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

2278-2281

DOI:

10.4028/www.scientific.net/KEM.336-338.2278

Citation:

M. K. Na et al., "Properties of Nano-Hybrid Sol-Gel Materials Synthesized from Colloidal Silica-Silane Containing Epoxy Silane", Key Engineering Materials, Vols. 336-338, pp. 2278-2281, 2007

Online since:

April 2007

Export:

Price:

$35.00

[1] M.F. Soares, A. Santos, E. Olivo, F. Castro, F. Morase, M. Zanin: J. Mol. Catal. B: Enzy. Vol. 29 (2004) p.69.

[2] D. Santas, A. Trzacton: Coatings technology handbook, 2nd edit (Chapman and Hall 1990).

[3] M.T. Reetz, A. Zonta, V. Vijayakrishnan, K. Schimossek: J. Mol. Catal. A: Chem. Vol. 134 (1998) p.251.

[4] S.H. Jang: Polym. Sci. & Tech. Vol. 12(5) (2001) p.676.

In order to see related information, you need to Login.