Organic–inorganic hybrid aerogels with high mechanical properties via organotrialkoxysilane-derived sol–gel process
Organic–inorganic hybrid aerogels with high mechanical properties via organotrialkoxysilane-derived sol–gel process
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DOI：
10.2109/jcersj2.119.16
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发表时间：
2011
影响因子：
1.1
通讯作者：
K. Kanamori
中科院分区：
文献类型：
--
作者：
K. Kanamori
简要介绍了基于硅氧烷的低密度气凝胶和类气凝胶干凝胶。气凝胶是由无机氧化物、金属、交联聚合物和碳组成的多孔固体，具有许多优异的物理性能，如高可见光透明度、低折射率、低介电性能和极低的导热性。因此，气凝胶被认为是超级绝缘体等应用的有前途的候选者；然而，自1931年首次发明气凝胶以来，由于缺乏机械性能，气凝胶的大规模生产和应用受到了极大的阻碍。这篇综述介绍了我们在改善气凝胶力学性能方面所做的大量努力，特别强调了我们最近使用受控溶胶-凝胶化学从甲基三甲氧基硅烷（MTMS）中获得的弹性有机-无机杂化气凝胶单体的发现。
A brief overview of siloxane-based low-density aerogels and aerogels-like xerogels is presented. Aerogels are highly porous solids composed of inorganic oxides, metals, cross-linked polymers and carbons, and are known to possess a number of excellent physical properties such as high visible-light transparency with low refractive index, low dielectric properties, and extremely-low thermal conductivity. Aerogels are therefore regarded as a promising candidate for applications such as superinsulators; however, a mass production and applications of aerogels have been significantly discouraged due to the lack of mechanical properties since the first invention in 1931. This review introduces the substantial effort to improve the mechanical properties of aerogels with particularly highlighting our recent findings on elastic organic–inorganic hybrid aerogel monoliths obtained from methyltrimethoxysilane (MTMS) using the controlled sol–gel chemistry.