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

Jin Peng Feng; De Ping Chen; Wen Ni; Shao Jian Ma; Jin Lin Yang; Wei Mo

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Effect of Fumed Titanium Oxide on Thermal...

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

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 284-286)

Pages:

102-105

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.284-286.102

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Online since:

July 2011

Authors:

Jin Peng Feng, De Ping Chen, Wen Ni, Shao Jian Ma, Jin Lin Yang, Wei Mo

Keywords:

Fumed Titanium Oxide, Thermal Insulating Composites, Volume Shrinkage

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