التفاصيل البيبلوغرافية
| العنوان: |
Ultralight and resilient Al2O3 nanotube aerogels with low thermal conductivity. |
| المؤلفون: |
Xu, Chencheng1, Wang, Haolun2, Song, Jianan1, Bai, Xiaopeng1, Liu, Zhenglian3, Fang, Minghao3, Yuan, Yongshuai4, Sheng, Junyuan4, Li, Xiaoyan4, Wang, Ning2,5 ning_wang@uestc.edu.cn, Wu, Hui1 huiwu@tsinghua.edu.cn |
| المصدر: |
Journal of the American Ceramic Society. Apr2018, Vol. 101 Issue 4, p1677-1683. 7p. 1 Diagram, 1 Chart, 4 Graphs. |
| مصطلحات موضوعية: |
*ALUMINUM oxide, *NANOTUBES, *AEROGELS, *THERMAL conductivity, *POVIDONE, *ATOMIC layer deposition |
| مستخلص: |
Abstract: This report describes a novel method to produce fluffy and resilient nanotube aerogels by combining solution blow spinning and Atom Layer Deposition (ALD). Polyvinylpyrrolidone (PVP) sponges obtained by blow spinning are used as templates and are deposited in ALD. After removal of template, semitransparent aerogels whose density can be as low as 0.68 mg/cm3 were obtained. The product is heat‐stable, with the ability to retain original shape and keep elastic after being kept at 900°C for 2 hours. It is also heat‐insulated, with a thermal conductivity of 0.022 W/K∙m at room temperature. Additionally, when compressed to 60% of the original height for 100 cycles during in‐situ mechanical test, the sponges recovered to around 80% of the original shape, further indicating excellent mechanically elasticity of the aerogel. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
