Effect of Fumed Titanium Oxide on Thermal Stability of Nano-Silica Thermal Insulating Composites

Abstract:

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This work investigated the effects of fumed titanium oxide on thermal stability of nano-silica thermal insulating composites prepared by dry process. The results showed that the composites could keep excellent thermal stability at the temperatures below 800°C. However, when the samples were used at higher temperatures (>800°C), the volume shrinkage increased sharply, which directly led to a serious deformation and then affected thermal insulating properties in applications. The utilization of fumed titanium oxide could significantly improve thermal stability of the composites. When 10wt% fumed titanium oxide was added, the service temperature can increase from 800°C to 900°C. The desirable results would be achieved by adjusting the amount of additives according to practical using temperature. In addition, field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD) were employed to characterize the microstructure and phase transformations of the composites treated at different temperatures.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

102-105

DOI:

10.4028/www.scientific.net/AMR.284-286.102

Citation:

J. P. Feng et al., "Effect of Fumed Titanium Oxide on Thermal Stability of Nano-Silica Thermal Insulating Composites", Advanced Materials Research, Vols. 284-286, pp. 102-105, 2011

Online since:

July 2011

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Price:

$35.00

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