Carbon fiber/epoxy composite property enhancement through incorporation of carbon nanotubes at the fiber-matrix interphase - Part I: The development of carbon nanotube coated carbon fibers and the evaluation of their adhesion
Carbon fiber/epoxy composite property enhancement through incorporation of carbon nanotubes at the fiber-matrix interphase - Part I: The development of carbon nanotube coated carbon fibers and the evaluation of their adhesion
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DOI：
10.1016/j.compositesa.2012.02.016
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发表时间：
2012-09-01
影响因子：
8.7
通讯作者：
Drzal, Lawrence T.
中科院分区：
文献类型：
--
作者：
Kamae, Toshiya;Drzal, Lawrence T.
开发了一种实现碳纳米管（CNT）均匀涂覆到碳纤维（CF）上的新方法，使得含碳纳米管（CNT）/环氧树脂复合材料的可扩展制造成为可能。在该方法中，碳纳米管经过阳离子聚合物处理，然后通过浸入碳纳米管/水悬浮液中将碳纳米管涂覆到碳纤维上。通过带正电的CNT之间的排斥力实现良好的分散，并且通过带正电的CNT和带负电的CF之间的吸引力实现CNT的均匀涂覆。研究发现，使用包括聚乙烯亚胺（PEI）在内的特定阳离子聚合物可产生稳定的碳纳米管/水悬浮液和均匀的碳纳米管涂层。对CF/环氧树脂复合材料进行单纤维断裂试验，以评估剪切载荷下界面和相间的强度。结果表明，将环氧树脂施胶剂与经 PEI 处理的 CNT 涂层结合到 CF 上可产生高界面剪切强度。 (c) 2012 Elsevier Ltd. 保留所有权利。
A new method to realize the uniform coating of carbon nanotubes (CNTs) to carbon fibers (CFs) has been developed, which enables the scalable fabrication of CNT containing CF/epoxy composites. In this method, CNTs are treated by cationic polymers, then, the CNTs are coated to CFs by immersion into a CNT/water suspension. Good dispersion is achieved by repulsive force between positively charged CNTs and uniform coating of the CNTs is achieved by attractive forces between positively charged CNTs and negatively charged CFs. It is found that the use of specific cationic polymers including polyethyleneimine (PEI) results in stable CNT/water suspensions, and uniform coating of the CNTs. Single fiber fragmentation tests of the CF/epoxy composites were conducted to evaluate the strength of interface and interphase under shear loading. The results show that the combination of epoxy resin sizing and PEI treated CNT coating to CFs results in high interfacial shear strength. (c) 2012 Elsevier Ltd. All rights reserved.