Improving the oxidation resistance of carbon/carbon composites at low temperature by controlling the grafting morphology of carbon nanotubes on carbon fibres
Improving the oxidation resistance of carbon/carbon composites at low temperature by controlling the grafting morphology of carbon nanotubes on carbon fibres
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DOI：
10.1016/j.corsci.2012.03.031
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发表时间：
2012-07-01
影响因子：
8.3
通讯作者：
Ren, Chang
中科院分区：
文献类型：
--
作者：
Li, Ke-Zhi;Song, Qiang;Ren, Chang
在碳纤维上接枝碳纳米管可以提高碳/碳（C/C）复合材料的抗氧化性能。通过控制碳纳米管在纤维上的接枝形态（包括展布接枝和径向接枝），可以不同程度地提高C/C复合材料的抗氧化性能。与铺展CNTs增强复合材料相比，径向CNTs增强复合材料具有更好的抗氧化性能，因为径向CNTs可以为整个焦碳基体和纤维/基体界面提供更有效的全厚度增强，从而抑制环状基体裂纹和纤维/基体界面脱粘等快速氧化通道的形成。英国皇家版权所有(c) 2012出版由爱思唯尔有限公司。版权所有。
Grafting carbon nanotubes (CNTs) on carbon fibres can improve the oxidation resistance of carbon/carbon (C/C) composites. Through controlling the CNT grafting morphology (including spreading and radial grafting) on fibres, different extents of improvements of the oxidation resistance of C/C composites can been obtained. Compared to spreading CNT reinforced composites, radial CNT reinforced composites have a better oxidation resistance since radial CNTs can provide more efficient through-thickness reinforcements to the whole pyrocarbon matrix and fibre/matrix interface and then inhibit the formation of rapid oxidation channels such as annular matrix cracks and fibre/matrix interface debonding. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.