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溶胶-凝胶法制备SiO_2气凝胶及其特性研究 被引量:82

Preparation of SiO_2 Aerogels with Sol-Gel Method and the study of Their Properties
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摘要 本文以TEOS为原料,采用溶胶-凝胶法和超临界干燥工艺制备了轻质纳米多孔材料SiO2气凝胶.研究了溶剂用量及pH值对溶胶的凝胶化过程和最后制成的气凝胶的特性的影响.并用BET、XRD、SEM等实验手段研究了这些气凝胶的结构和一些基本物理现象. Nano-porous material SiO2 aerogels were prepared from TEOS through sol-gel process and super critical drying technique. The effects of the amount of solvent used and the pH value of solution on the gelling process and the structure of the aerogels were studied. BET, XRD, SEM and some other experiment methods were used to investigate the structure and other physical properties of these aerogels.
出处 《无机材料学报》 SCIE EI CAS CSCD 北大核心 1995年第1期69-75,共7页 Journal of Inorganic Materials
基金 国家自然科学基金
关键词 气凝胶 溶胶凝胶法 超临界 干燥 二氧化硅 aerogels, sol-gel method, super critical drying
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