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Novel porous nanohybrid materials with unexpected mechanical and electrical performance by pyrolysis of carbon nanotube-filled benzoxazine thermosets
Nanocomposites ( IF 4.2 ) Pub Date : 2016-11-28 , DOI: 10.1080/20550324.2016.1254927
L. Dumas 1 , L. Bonnaud 1 , P. Dubois 1
Affiliation  

In this communication, we highlight the remarkable and unexpected mechanical and electrical properties of new porous nanohybrid materials as readily obtained by a two-step preparation procedure. Neat multi-wall carbon nanotube (CNT)-reinforced benzoxazine nanocomposites were first produced. At a CNT content of 5 wt%, pyrolysis of the nanocomposites allowed for recovering porous monolithic nanohybrid materials exhibiting outstanding mechanical resistance (elastic modulus of ca. 50 MPa) for an electrical conductivity as high as 30 S cm−1. Interestingly, long CNTs were found to build up an internal scaffold limiting the deformation of the foamed structure and preserving the geometric shape and dimensional integrity of the sample along the pyrolysis process. The concept of this novel approach paves the way for the production of a very promising choice of viable (nano)materials for use as domains as versatile as in energy storage, catalysis, or shielding applications.



中文翻译:

通过热解碳纳米管填充的苯并恶嗪热固性材料,具有出乎意料的机械和电气性能的新型多孔纳米杂化材料

在本交流中,我们着重介绍了通过两步制备过程即可轻松获得的新型多孔纳米混合材料的卓越机械性能和电性能。首先生产了纯净的多壁碳纳米管(CNT)增强的苯并恶嗪纳米复合材料。在CNT含量为5wt%时,纳米复合材料的热解允许回收对于电导率高达30 S cm -1表现出优异的机械阻力(约50 MPa的弹性模量)的多孔整体纳米混合材料。。有趣的是,发现长的CNT可以建立内部支架,从而限制泡沫结构的变形并在热解过程中保持样品的几何形状和尺寸完整性。这种新颖方法的概念为生产非常有希望的可行的(纳米)材料选择铺平了道路,这些材料被用作在能量存储,催化或屏蔽应用中用途广泛的领域。

更新日期:2016-11-28
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