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  4. 气凝胶低成本制备及其在建筑保温领域中的应用?

功能材料, 2015, (7): 7001-7007. doi: 10.3969/j.issn.1001-9731.2015.07.001

气凝胶低成本制备及其在建筑保温领域中的应用?

沈军 1, , 连娅 2, , 祖国庆 3, , 邹丽萍 4, , 王文琴 5, , 张志华 6,

1.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

2.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

3.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

4.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

5.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

6.同济大学 玻尔固体物理研究所，上海市人工微结构材料与技术重点实验室，上海 200092

基金项目:   国家高技术研究发展计划(863计划)资助项目(SS2013AA031501)   国家科技支撑计划资助项目(2013BAJ01B01)   上海市科委纳米专项资助项目(11nm0501600,12nm0503001)   国家自然科学基金资助项目(U1230113)  

关键词： SiO 2 气凝胶 , 低成本制备 , 表面改性 , 常压干燥 , 建筑保温

Aerogel low-cost preparation and its application in the field of building insulation

Keywords： silica aerogel , low-cost preparation , surface modification , ambient pressure drying , building insulation

气凝胶是一种新型的纳米多孔材料，以其孔隙率高、密度低、比表面积大等独特的性能受到人们广泛的关注。这些优异的性能使得气凝胶在声阻抗耦合、高效保温隔热、催化剂及其载体航空航天等方面拥有非常广泛的应用前景。阐述了气凝胶的低成本制备及常压干燥技术，介绍了气凝胶在建筑保温隔热领域的应用现状和发展前景，并且分析了其与主流建筑保温隔热材料的优劣。

Because of its unique properties,such as high porosity,low density,high specific surface area,aero-gels have been widely concerned as a new type of nanoporous materials.These excellent properties allow aero-gels have extensive application prospects in acoustic impedance coupling,efficient thermal insulation,catalyst, aeronautics and astronautics,etc.In this paper,the low-cost preparation of aerogels and ambient pressure dr-ying technology are studies,and the application status and prospects of aerogels in the field of building thermal insulation are introduced,and the advantages and disadvantages of aerogels compared to mainstream building thermal insulation materials are analyzed.

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