Effects of graphene nanoplatelets and graphene nanosheets on fracture toughness of epoxy nanocomposites

被引：93

作者：

Shokrieh, M. M. ^{[1
]}

Ghoreishi, S. M. ^{[1
]}

Esmkhani, M. ^{[1
]}

Zhao, Z. ^{[2
]}

机构：

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

[2] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Shandong, Peoples R China

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2014年 / 37卷 / 10期

关键词：

fracture toughness; graphene nanoplatelet; graphene nanosheets; mechanical properties; nanocomposites; TOUGHENING MECHANISMS; CARBON NANOTUBES; NANO-COMPOSITES; GRAPHITE OXIDE; STRENGTH; DISPERSIONS; FATIGUE;

D O I：

10.1111/ffe.12191

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effects of graphene nanoplatelets (GPLs) and graphene nanosheets (GNSs) on fracture toughness and tensile properties of epoxy resin have been studied. A new technique for synthesis of GPLs based on changing magnetic field is developed. The transmission-electron microscopy and the Raman spectroscopy were employed to characterize the size and chemical structure of the synthesized graphene platelets. The critical stress intensity factor and tensile properties of epoxy matrix filled with GPL and GNS particles were measured. Influence of filler content, filler size and dispersion state was examined. It was found that the GPLs have greater impact on both fracture toughness and tensile strength of nanocomposites compared with the GNSs. For instance, fracture toughness increased by 39% using 0.5 wt% GPLs and 16% for 0.5 wt% GNSs.

引用

页码：1116 / 1123

页数：8

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