Novel whisker-reinforced Al2O3–SiO2 aerogel composites with ultra-low thermal conductivity

Xianbo Hou, Rubing Zhang*, Daining Fang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

83 引用 (Scopus)

摘要

Novel aluminium borate whisker (ABOw)/Al2O3–SiO2 aerogel composites were prepared by adding ABOw into an Al2O3–SiO2 solution using a quick gel and supercritical fluid drying method. The microstructures and thermal and mechanical properties of the prepared ABOw/Al2O3–SiO2 aerogel composites were investigated. The ABOw is randomly and homogeneously dispersed in the Al2O3–SiO2 aerogel and the well-integrated nature of the material leads to enhanced mechanical properties and smaller linear shrinkage compared to those determined for pure Al2O3–SiO2 aerogels. The compressive strength of the aerogel composites exhibit lightweight, ultra-low thermal conductivity (i.e. 0.040 W/(m·K)) and high compressive strength (i.e. 1.40 MPa at 10% strain), which is five times higher than the strength of pure Al2O3–SiO2 aerogels. This aerogel composite prepared in this study makes a potential application in thermal insulation materials.

源语言英语
页(从-至)9547-9551
页数5
期刊Ceramics International
43
12
DOI
出版状态已出版 - 15 8月 2017

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Hou, X., Zhang, R., & Fang, D. (2017). Novel whisker-reinforced Al2O3–SiO2 aerogel composites with ultra-low thermal conductivity. Ceramics International, 43(12), 9547-9551. https://doi.org/10.1016/j.ceramint.2017.04.043