Delamination toughening of carbon fiber/epoxy laminates by hierarchical carbon nanotube-short carbon fiber interleaves
Delamination toughening of carbon fiber/epoxy laminates by hierarchical carbon nanotube-short carbon fiber interleaves
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DOI：
10.1016/j.compscitech.2016.12.018
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发表时间：
2017-03-01
影响因子：
9.1
通讯作者：
Mai, Yiu-Wing
中科院分区：
文献类型：
--
作者：
Zhou, Helezi;Du, Xusheng;Mai, Yiu-Wing
在这项研究中，分层短碳纤维（SCFs）与碳纳米管（CNTs）合成作为CNT-SCF插入物，以提高碳纤维/环氧树脂（CF/EP）复合材料层合板的I型分层断裂能G（IC）。即使在相对低的CNT-SCF面密度1.0 mg/cm（2）下，Gic（1.17 kJ/m2）与对照层压体（0.52 kJ/m2）相比也增加了125%，这与通过CF/EP层压体中的其他交织方法获得的那些结果相比是非常高的值。为了更好地理解分级CNT-SCF结构的失效机制，还研究了SCF在本体环氧树脂和交错CF/EP层压板中的增韧效果。SEM观察揭示了这些CNT-SCF交错CF/EP层压板的协同增韧机制。(C)2016爱思唯尔有限公司版权所有。
In this study, hierarchical short carbon fibers (SCFs) synthesized with carbon nanotubes (CNTs) were used as CNT-SCF interleaves to increase the mode I delamination fracture energy G(IC) of carbon fiber/epoxy (CF/EP) composite laminates. Even at a relatively low CNT-SCF areal density, 1.0 mg/cm(2), Gic (1.17 kJ/m(2)) was increased by 125% compared to the control laminates (0.52 kJ/m(2)), which is a very high value compared to those results obtained by other interleaving methods in CF/EP laminates. The toughening effects of SCFs in bulk epoxy and interleaved CF/EP laminates were also studied to better understand the failure mechanisms of the hierarchical CNT-SCF structure. SEM observations revealed synergistic toughening mechanisms in these CNT-SCF interleaved CF/EP laminates. (C) 2016 Elsevier Ltd. All rights reserved.