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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2025, Vol. 44 ›› Issue (2): 732-745.DOI: 10.16552/j.cnki.issn1001-1625.2024.0930

• Functional Materials • Previous Articles     Next Articles

Research Progress on Al2O3-SiO2 Aerogels and Their Fiber-Reinforced Composites

SUN Chuanqing1,2, WANG Yang1, LI Zhanfeng2, MA Kui1, WANG Mengmeng2, LIU Ruixiang2, LIU Futian1   

  1. 1. School of Materials Science and Engineering, University of Jinan, Jinan 250022, China;
    2. Shandong Industrial Ceramic Research and Design Institute Co., Ltd., Zibo 255000, China
  • Received:2024-08-09 Revised:2024-10-10 Online:2025-02-15 Published:2025-02-28

Abstract: The Al2O3-SiO2 aerogel (ASA), due to its high porosity, low density and high specific surface area, exhibits outstanding high-temperature resistance and thermal insulation properties, holding broad development prospects in the field of aerospace thermal insulation. However, the relatively poor mechanical properties of ASA, weak infrared radiation absorption and heat dissipation capabilities at high temperatures limit its application in the field of high-temperature insulation. Element doping and fiber reinforcement are commonly used to improve the thermal insulation and mechanical properties of ASA. This paper provides an overview of ASA preparation techniques, factors affecting ASA properties, research on element or substance doped ASA, and fiber-reinforced ASA composites, while also offering insights into the future development directions of ASA.

Key words: Al2O3-SiO2 aerogel, element doping, fiber, composite, mechanical property, thermal insulation property

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