| 常压制备低密度SiO2气凝胶的正交分析及表征 |
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| 引用本文： | 卢斌,魏琪青,孙俊艳,周强,宋淼. 常压制备低密度SiO2气凝胶的正交分析及表征[J]. 硅酸盐通报, 2011, 30(5): 1000-1004,1009 |
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| 作者姓名： | 卢斌 魏琪青 孙俊艳 周强 宋淼 |
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| 作者单位： | 中南大学材料科学与工程学院,长沙,410083 |
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| 基金项目： | 湖南省科技计划重点项目(06GK2022) |
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| 摘 要： | 选择5因素4水平的L16(45)正交试验,以正硅酸乙酯(tetraethoxysilane,TEOS)为原料,采用酸碱两步催化溶胶-凝胶法和常压干燥制备了SiO2气凝胶,分析了正交实验因素对结果的影响,并对气凝胶的形貌、表面基团、疏水性、孔结构进行了表征.实验结果表明:表面改性对制备低密度SiO2气凝胶影响最大,正交试...
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| 关 键 词： | SiO2气凝胶 常压干燥 正交优化 疏水改性 |
Orthogonal Optimization and Characterization of Low Density Silica Aerogels by Ambient Pressure Drying |
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| LU Bin,WEI Qi-qing,SUN Jun-yan,ZHOU Qiang,SONG Miao. Orthogonal Optimization and Characterization of Low Density Silica Aerogels by Ambient Pressure Drying[J]. Bulletin of the Chinese Ceramic Society, 2011, 30(5): 1000-1004,1009 |
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| Authors: | LU Bin WEI Qi-qing SUN Jun-yan ZHOU Qiang SONG Miao |
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| Affiliation: | LU Bin,WEI Qi-qing,SUN Jun-yan,ZHOU Qiang,SONG Miao(College of Materials Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Silica aerogels were prepared by two step(acid-base) sol-gel process using tetraethyl orthosilicate(TEOS) as raw material followed by ambient pressure drying in the five-factor and four-level L16(45) orthogonal test,which was designed to analyze the factors' effects on the results.The silica aerogels were characterized to study morphology,surface functional groups,hydrophobicity,and pore sturcture.The results showed that surface modification had the greatest effect on density of prepared silica aerogels and... |
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| Keywords: | silica aerogels ambient pressure drying orthogonal optimization surface modification |
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