Analysis of interlaminar fracture toughness and damage mechanisms in composite laminates reinforced with sprayed multi-walled carbon nanotubes
Analysis of interlaminar fracture toughness and damage mechanisms in composite laminates reinforced with sprayed multi-walled carbon nanotubes
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DOI：
10.1016/j.matdes.2013.07.081
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发表时间：
2014-01-01
影响因子：
8.4
通讯作者：
Lubineau, Gilles
中科院分区：
文献类型：
--
作者：
Almuhammadi, Khaled;Alfano, Marco;Lubineau, Gilles
本文主要研究了碳纤维复合材料层合板的纳米增强技术。功能化的多壁碳纳米管（MWCNTs）通过溶剂喷涂分散在预浸料层之间的界面上，并测定所得的I型层间断裂韧性。为了进行比较，还制备了具有纯明胶的基线样品。结果表明，功能化的多壁碳纳米管的引入可以有利地影响层间断裂韧性，和相关的失效机制进行了研究。通过高分辨扫描电子显微镜和拉曼光谱分析了碳纳米管-溶剂溶液与预浸料表面的润湿性、碳纳米管的分散性和断裂表面，探讨了复合材料的制备过程和界面增强机理。(C)2013爱思唯尔有限公司版权所有。
The present work is focused on the nanoreinforcement of prepreg based carbon fiber composite laminates to improve delamination resistance. Functionalized multi-walled carbon nanotubes (MWCNTs) were dispersed over the interface between prepreg layers through solvent spraying and the resulting mode I interlaminar fracture toughness was determined. For comparison, baseline samples with neat prepregs were also prepared. Results indicate that the introduction of functionalized MWCNTs can favorably affect the interlaminar fracture toughness, and the associated mechanisms of failure have been investigated. The manufacturing procedures and the interfacial reinforcing mechanism were explored by analyzing (i) the wettability between CNTs-solvent solution and prepreg surface, (ii) CNTs dispersion and (iii) the fractured surfaces through high resolution scanning electron microscopy and Raman mapping. (C) 2013 Elsevier Ltd. All rights reserved.