Effect of carbon nanofiber z-threads on mode-I delamination toughness of carbon fiber reinforced plastic laminates
Effect of carbon nanofiber z-threads on mode-I delamination toughness of carbon fiber reinforced plastic laminates
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DOI：
10.1016/j.compositesa.2016.10.022
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发表时间：
2016-12-01
影响因子：
8.7
通讯作者：
Henderson, Kendrick
中科院分区：
文献类型：
--
作者：
Hsiao, Kuang-Ting;Scruggs, Alexander M.;Henderson, Kendrick
分层是碳纤维增强塑料（CFRP）的主要缺点。研究表明，碳纳米纤维（CNF）可以改善各种FRP的分层韧性。然而，CNF对准控制的缺乏造成了很大的不确定性的改进。在这项研究中，一种新的CNFs z-螺纹CFRP（ZT-CFRP），它利用z-对齐的CNFs作为长距离增强螺纹通过填充的碳纤维床，制造。相对于对照CFRP和未对齐的CNF改性的CFRP（UA-CFRP）测试ZT-CFRP的模式I分层韧性（GO）。通过与对照CFRP的统计学比较，UA-CFRP的平均Glc和变异系数的相对变化分别为+13.99%和116.35%，而等效CNF浓度的ZT-CFRP的平均Gic和变异系数的相对变化分别为+28.93%和12.33%。因此，CNF Z-线程被发现在增韧CFRP中发挥积极的作用，支持分层实验和显微镜分析。(C)2016爱思唯尔有限公司版权所有
Delamination is a major drawback of carbon fiber reinforced plastics (CFRPs). Studies have reported that carbon nanofibers (CNFs) can improve the delamination toughness of various FRPs. However, lack of CNF alignment control caused substantial uncertainty in the improvements. In this study, a novel CNFs z-threaded CFRP (ZT-CFRP), which utilized z-aligned CNFs as long-range reinforcement threading through the packed carbon fiber bed, was manufactured. The mode-I delamination toughness (GO of the ZT-CFRPs was tested against both control CFRPs and unaligned CNF-modified CFRPs (UA-CFRPs). Through statistical comparison against control CFRPs, UA-CFRPs exhibited a relative change in mean Glc and coefficient of variation of +13.99% and +116.35%, respectively, whereas the ZT-CFRPs of equivalent CNF concentration exhibited a relative change in mean Gic and coefficient of variation of +28.93% and 12.33%, respectively. Accordingly, the CNF z-threads were found to play a positive role in toughening CFRPs, as supported by delamination experiments and microscopy analysis. (C) 2016 Elsevier Ltd. All rights reserved.