Journal
INTERNATIONAL JOURNAL OF NANOSCIENCE
Volume 19, Issue 3, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219581X19500212
Keywords
Al2O3 aerogel; TiO2; SiC; thermal conductivity
Categories
Funding
- Sichuan Science and Technology Program [2018RZ0127]
- Project of State Key Laboratory of Environmentfriendly Energy Materials, Southwest University of Science and Technology [18fksy0221]
- Doctoral Research Fund of Southwest University of Science and Technology [16zx7142]
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The infrared opacifiers loaded Al2O3 aerogel-SiO fiber mat composites were fabricated by the sol-gel process. The effects of the content of the TiO2 and SiC particles on thermal insulation performance of the Al2O3 aerogel-SiO2 fiber mat composites were studied. The results showed that the optimum doping content of TiO2 and SiC for Al2O3 aerogel-SiO2 fiber mat composites were 10 mol.% and 0.5 mol.%, respectively. The optimum TiO2-Al2O3 aerogel-SiO2 fiber mat composite had the low thermal conductivity of 0.021 W/(m . K) at 35 degrees C and 0.031 W/(m . K) at 600 degrees C. Meanwhile, the SiC-Al2O3 aerogel-SiO2 fiber mat composite also had the low thermal conductivity of 0.022 W/(m . K) at 35 degrees C and 0.025 W/(m . K) at 600 degrees C.
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