caa a22 4500 606195939 CHVBK 20210128100922.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10934-015-0001-2 doi (NATIONALLICENCE)springer-10.1007/s10934-015-0001-2 Preparation and characterization of C/Al2 O3 composite aerogel with high compressive strength and low thermal conductivity [Elektronische Daten] [Xiaodong Wu, Ya Zhong, Yong Kong, Gaofeng Shao, Sheng Cui, Ling Wang, Jian Jiao, Xiaodong Shen] Carbon/alumina (C/Al2O3) composite aerogel with high compressive strength and low thermal conductivity has been successfully synthesized by sol-gel method, followed by CO2 supercritical drying and carbonization. SEM images and compressive Young's modulus measurements show that the C/Al2O3 aerogel with a molar ratio of Resorcinol/Alumina (R/Al) of 1.0 presents homogeneous pore structures and obtains excellent compressive Young's modulus up to 90MPa. Three weight losses regions are observed during heat treatment process, confirmed by TG/DSC measurements. XRD patterns and TEM images indicate that α-Al2O3 phase transition occurs only when heat treatment temperature reaches up to 1500°C with the adding of carbon source, 200°C higher than pure Al2O3 aerogel. The as-dried RF/Al2O3 aerogel possesses thermal conductivity as low as 0.025Wm−1K−1. The thermal conductivities of C/Al2O3 aerogels increase gradually with the increase of heat treatment temperatures, caused by increasing solid thermal conductivity. The thermal conductivities range from 0.033 to 0.049Wm−1K−1, suitable for efficient thermal insulations uses. Springer Science+Business Media New York, 2015 C/Al2O3 aerogel nationallicence Compressive Young's modulus nationallicence Thermal conductivity nationallicence Heat treatment temperature nationallicence Phase transition nationallicence Wu Xiaodong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Zhong Ya State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Kong Yong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Shao Gaofeng State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Cui Sheng State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Wang Ling Avic Composite Corporation Ltd, National Key Laboratory of Advanced Composite, 101300, Beijing, China aut Jiao Jian Avic Composite Corporation Ltd, National Key Laboratory of Advanced Composite, 101300, Beijing, China aut Shen Xiaodong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1235-1243 1380-2224 22:5<1235 2015 22 10934 https://doi.org/10.1007/s10934-015-0001-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-0001-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu Xiaodong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 700 1- Zhong Ya State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 700 1- Kong Yong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 700 1- Shao Gaofeng State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 700 1- Cui Sheng State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 700 1- Wang Ling Avic Composite Corporation Ltd, National Key Laboratory of Advanced Composite, 101300, Beijing, China aut NATIONALLICENCE 700 1- Jiao Jian Avic Composite Corporation Ltd, National Key Laboratory of Advanced Composite, 101300, Beijing, China aut NATIONALLICENCE 700 1- Shen Xiaodong State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 210009, Nanjing, China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1235-1243 1380-2224 22:5<1235 2015 22 10934