The effect of agglomeration on the fracture toughness of CNTs-reinforced nanocomposites

被引：83

作者：

Zeinedini, Afshin ^{[1
]}

Shokrieh, Mahmood M. ^{[1
]}

Ebrahimi, Ali ^{[1
]}

机构：

[1] Iran Univ Sci & Technol, Sch Mech Engn, Ctr Excellence Expt Solid Mech & Dynam, Composites Res Lab, Tehran 1684613114, Iran

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2018年 / 94卷

关键词：

Agglomeration; Carbon nanotubes; Epoxy; Nanocomposites; Theoretical model; MECHANICAL-PROPERTIES; CARBON NANOTUBES; COMPOSITES; DISPERSION;

D O I：

10.1016/j.tafmec.2018.01.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Carbon nanotubes (CNTs) may improve or degrade the fracture toughness of epoxy polymers. The improvement strongly depends on the density of isolated CNTs dispersed in the nanocomposites. On the other hand, the degradation is mainly related to the density of CNTs agglomeration. Hence, the main objective of this paper is to investigate the effect of CNTs agglomeration on the fracture toughness of CNTs/epoxy nanocomposites. First, a theoretical model was developed to predict the fracture toughness of nanocomposites reinforced with well-dispersed CNTs. Then, by introducing a semi-empirical factor, the model was used to predict the effect of CNTs agglomeration on the degradation of the fracture toughness of the nanocomposites. To validate the model, in addition to pure epoxy specimens, 0.1, 0.3, 0.5, 0.6 and 0.7 wt% MWCNTs-reinforced epoxy samples were fabricated. The Young's modulus and fracture toughness of the samples were experimentally measured. It was observed that the predictions are in a very good agreement with the experimental results.

引用

页码：84 / 94

页数：11

共 29 条

[1]

[Anonymous], 2014, ASTM D 638-14, DOI DOI 10.1520/D0638-14

[2]

[Anonymous], 2014, D504514 ASTM

[3] Fracture toughness of epoxy/multi-walled carbon nanotube nano-composites under bending and shear loading conditions [J].