Al_2O_3气凝胶以其独特性质受到人们的广泛关注.本文就Al_2O_3气凝胶的结构、性质和制备方法进行了综述,制备方法包括铝醇盐的一步法、两步法和无机铝盐的滴加环氧丙烷法,其中滴加环氧丙烷法是制备高性能Al_2O_3气凝胶非常有发展潜力的方法之一.同时还介绍了纤维增强气凝胶、多组分及掺杂改性气凝胶.
Alumina aerogel had been paid great attention for its unique properties. The structure and various preparation methods of alumina aerogels had been summarized in this paper. The preparation methods included alumina alkoxide one step,two steps method and addition of propylene oxide method. The addition of propylene oxide method is one of the most potential route for the synthesis of high performance alumina aerogels. Fiber-reinforced, multiple cornponent and doped aerogels were also introduced.
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