Highly elastic graphene oxide-epoxy composite aerogels via simple freeze-drying and subsequent routine curing
Highly elastic graphene oxide-epoxy composite aerogels via simple freeze-drying and subsequent routine curing
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DOI：
10.1039/c2ta01142e
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发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Wu, Peiyi
中科院分区：
文献类型：
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作者：
Ye, Shibing;Feng, Jiachun;Wu, Peiyi
在这项研究中，高弹性的氧化石墨烯-环氧复合气凝胶（GEA）的制备通过一个简单的方法，其中的热固性环氧树脂前体和氧化石墨烯片的混合悬浮液冷冻干燥，然后通过常规的固化过程。所得的具有三维网络结构的GEA不仅表现出高分解温度（286 ℃）、优异的机械强度（0.231 MPa）和极低的密度（0.09 g cm（-3）），而且还实现了高弹性，因为它从大的压缩应变恢复而没有显著的永久变形。我们获得的GEA的特殊性能提供了一系列的能量吸收和耐用的绝缘材料的实际应用的潜力，方便的合成方法也可以用于制造其他有机-无机复合气凝胶具有优异的机械性能。
In this study, highly elastic graphene oxide-epoxy composite aerogel (GEA) was fabricated by a facile method, in which the mixed suspension of the thermoset epoxy precursors and graphene oxide sheets was freeze-dried, followed by a routine curing process. The resulting GEA with a three-dimensional network structure not only exhibits a high decomposition temperature (286 degrees C), excellent mechanical strength (0.231 MPa) and extremely low density (0.09 g cm(-3)), but also achieves high elasticity, as it recovers from a large compressive strain without significant permanent deformation. The exceptional properties of our obtained GEA provide the potential for a range of practical applications in energy-absorbing and durable insulation materials, and the convenient synthetic approach could also be utilized in the fabrication of other organic-inorganic composite aerogels with outstanding mechanical properties.