化工学报2019，Vol.70Issue(z2)：363-368,6.DOI:10.11949/0438-1157.20190497
玻璃棉/SiO2气凝胶复合板的改性研究
Study on modification of glass wool/SiO2 aerogel combined board
摘要
Abstract
The modified solution of SiO2 aerogel was prepared by selecting anhydrous ethanol as solvent and SiO2 aerogel as solute and was used to improve the thermal insulation performance of glass wool. Glass wool/SiO2 aerogel combined boards were prepared by infiltration and prevailing pressure drying. The influence of the mass fraction of SiO2 aerogel and the infiltration time on its performance was studied, and compared with the glass wool/SiO2 aerogel combined board prepared by sol-gel method. The results show that the mass fraction of SiO2 aerogel and infiltration time have significant influence on the properties of glass wool/SiO2 aerogel combined board. When the mass fraction of SiO2 aerogel reached 8% and the infiltration time was 20 min, the short-term water absorption and thermal conductivity of glass wool/SiO2 aerogel combined board decreased by 38.09% and 18.32% respectively, and the compressive strength increased by 102.89%. Compared with sol-gel method, this method has the advantages of shorter preparation cycle, simpler process and lower cost, and is more suitable for large-scale production.关键词
SiO2气凝胶/玻璃棉/SiO2气凝胶复合板/热导率/建筑能耗/复合材料/溶液Key words
silica aerogel/ glass wool/SiO2 aerogel combined board/ thermal conductivity/ building energy consumption/ composites/ solution分类
建筑与水利引用本文复制引用
闫秋会,孙晓阳,罗杰任,吴志菊..玻璃棉/SiO2气凝胶复合板的改性研究[J].化工学报,2019,70(z2):363-368,6.基金项目
陕西省科技厅重点研发计划项目(2018SF-355) （2018SF-355）
动力工程多相流国家重点实验室开放基金项目 （）
西安市碑林区科技计划项目(GX1804) （GX1804）
