Microstructure and Thermal Characterization of Multilayer Insulation Materials Based on Silica Aerogels

doi:10.3724/SP.J.1077.2013.13070

Abstract

Abstract: A new kind of MLIMs are prepared, whose spacer is made from Al2O3 fiber mat, and silica aerogels is implanted on the surface of Al2O3?fiber through Sol-Gel process. In high vacuum (10^-3 Pa), the effective thermal conductivity of the new MILMs could be reduced by 21.8%, at the same time, the weight could be reduced by 67.2%. Furthermore, this MLIMs shows good insulation performance in high temperature of 1200 K and low vacuum (100 Pa).

Key words: multilayer insulations, silica aerogels, thermal conductivity

CLC Number:

TQ174

SHENG Chen, YU Yun, YU Yang, MI Le, TANG Gen-Chu, SONG Li-Xin. Microstructure and Thermal Characterization of Multilayer Insulation Materials Based on Silica Aerogels[J]. Journal of Inorganic Materials, 2013, 28(7): 790-794.

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