基于二氧化硅气凝胶制备的多层隔热材料微观结构及热性能研究(英文)  

Microstructure and Thermal Characterization of Multilayer Insulation Materials Based on Silica Aerogels

作　　者：盛晨[1] 于云[1] 于洋[1] 米乐[1] 唐根初[1] 宋力昕[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,无机涂层重点实验室,上海200050

出　　处：《无机材料学报》2013年第7期790-794,共5页Journal of Inorganic Materials

摘　　要：成功制备了一种新型多层隔热材料,其间隔层基于氧化铝纤维制备,并由溶胶-凝胶法植入二氧化硅气凝胶颗粒。在高真空环境下(10-3Pa),新型多层隔热材料当量热导率比传统材料低21.8%,同时重量比传统材料降低了67.2%。此外,这种新型多层隔热材料在1200 K的高温以及低真空条件下(100 Pa)也表现出良好的隔热性能。A new kind of MLIMs are prepared,whose spacer is made from Al2O3 fiber mat,and silica aerogels is implanted on the surface of Al2O3 fiber through Sol-Gel process.In high vacuum（10-3 Pa）,the effective thermal conductivity of the new MILMs could be reduced by 21.8%,at the same time,the weight could be reduced by 67.2%.Furthermore,this MLIMs shows good insulation performance in high temperature of 1200 K and low vacuum（100 Pa）.

关 键 词：多层隔热材料 二氧化硅气凝胶 热导率 

分 类 号：TQ174[化学工程—陶瓷工业]