柔性SiO2气凝胶的制备OA北大核心CSCDCSTPCD
Preparation of Flexible SiO2 Aerogel
以甲基三乙氧基硅烷为前驱体,通过溶胶-凝胶法和超临界干燥制备块状柔性SiO2气凝胶.研究了前驱体浓度对材料化学组成、微观结构及柔韧性、热稳定性的影响.结果表明,甲基的存在降低了分子网络的交联密度,赋予了材料柔韧性.随着前驱体浓度降低,微观结构中颗粒堆积紧密程度下降,材料的柔韧性增强；同时分子中硅羟基增多,热稳定性提高.
The flexible aerogel monoliths were prepared by the hydrolysis and condensation of methyltriethoxysilane (MTES),followed by supercritical drying.The influence of concentration of precursor on the chemical composition,microstructure,flexibility and thermal stability of aerogel were investigated.It is shown that the degree of cross linking of aerogel molecule,which was prepared by the precursor of MTES and showed excellent flexibility was declined because of t…查看全部>>
吴文军;熊刚;王钦;陈晓红;胡子君
航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京100076北京化工大学化工资源有效利用国家重点实验室,北京100029航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京100076北京化工大学化工资源有效利用国家重点实验室,北京100029航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京100076
柔性气凝胶化学组成微观结构热稳定性
Flexible aerogel Chemical constitution Microstructure Thermal stability
《宇航材料工艺》 2013 (4)
113-117,5
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