Interface Toughness of Carbon Nanotube Reinforced Epoxy Composites

被引：82

作者：

Ganesan, Yogeeswaran ^{[2
]}

Peng, Cheng ^{[2
]}

Lu, Yang ^{[2
]}

Loya, Phillip E. ^{[2
]}

Moloney, Padraig ^{[2
]}

Barrera, Enrique ^{[2
]}

Yakobson, Boris I. ^{[2
,3
]}

Tour, James M. ^{[2
,3
]}

Ballarini, Roberto ^{[1
]}

Lou, Jun ^{[2
]}

机构：

[1] Univ Minnesota, Dept Civil Engn, Minneapolis, MN 55455 USA

[2] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

[3] Rice Univ, Dept Chem, Houston, TX 77005 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 02期

基金：

美国国家科学基金会;

关键词：

multiwall carbon nanotubes; epoxy composite; single-fiber pull-out; interfacial strength; POLYMER-MATRIX; STRENGTH; FRAGMENTATION; FIBER; LOAD;

D O I：

10.1021/am1011047

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Traditional single-fiber pull-out type experiments were conducted on individual multiwalled carbon nanotubes (MWNT) embedded in an epoxy matrix using a novel technique. Remarkably, the results are qualitatively consistent with the predictions of continuum fracture mechanics models. Unstable interface crack propagation occurred at short MWNT embedments, which essentially exhibited a linear load-displacement response prior to peak load. Deep embedments, however, enabled stable crack extension and produced a nonlinear load-displacement response prior to peak load., The maximum pull-out forces corresponding to a wide range of embedments were used to compute the nominal interfacial shear strength and the interfacial fracture energy of the pristine MWNT-epoxy interface.

引用

页码：129 / 134

页数：6

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