Effect of CNT functionalization on crack resistance of a carbon/epoxy composite at a cryogenic temperature

被引：75

作者：

Kim, Myung-Gon ^{[1
]}

Moon, Jin-Bum ^{[1
]}

Kim, Chun-Gon ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Aerosp Engn, Taejon 305701, South Korea

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2012年 / 43卷 / 09期

关键词：

Polymer-matrix composites (PMCs); Thermal properties; Acoustic emission; Mechanical testing; FRACTURE-TOUGHNESS; ELECTRICAL-PROPERTIES;

D O I：

10.1016/j.compositesa.2012.04.001

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

In this study, the authors attempted to enhance the crack resistance of a carbon/epoxy composite by adding carbon nanotubes (CNTs) into the resin formulation. Prior to applying CNTs, a chemical surface treatment, amino-functionalization, was conducted to enhance the interfacial bonding between CNTs and epoxy resin. The resultant increase in tensile strength was attributed to good interfacial bonding quality. Two kinds of 3-phase carbon/CNT-epoxy unidirectional prepregs were fabricated via a hot-melting process with the addition of CNTs. The CNT-reinforcing and -functionalizing effects were investigated through DCB tests and measurement of the acoustic emission (AE) signal of a cross-ply specimen both at RT and at -150 degrees C. The carbon/epoxy composite containing functionalized-CNTs showed improved interlaminar fracture toughness and transverse crack resistance at the cryogenic temperature. (c) 2012 Published by Elsevier Ltd.

引用

页码：1620 / 1627

页数：8

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