Functionalized reduced graphene oxide/epoxy composites with enhanced mechanical properties and thermal stability

被引：76

作者：

Chhetri, Suman ^{[1
,2
]}

Adak, Nitai Chandra ^{[1
,2
]}

Samanta, Pranab ^{[1
,2
]}

Murmu, Naresh Chandra ^{[1
,2
]}

Kuila, Tapas ^{[1
,2
]}

机构：

[1] CSIR, Cent Mech Engn Res Inst, Surface Engn & Tribol Div, Durgapur 713209, India

[2] CSIR, CMERI, Acad Sci & Innovat Res AcSIR, Durgapur 713209, India

来源：

POLYMER TESTING | 2017年 / 63卷

关键词：

Graphene; Thermosetting resin; Fracture toughness; Thermomechanical properties; Thermal analysis; EPOXY NANOCOMPOSITES; FRACTURE-TOUGHNESS; INTERFACE; POLYMER; EXFOLIATION; NANOTUBES; STRENGTH; ENERGY;

D O I：

10.1016/j.polymertesting.2017.08.005

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

One-pot hydrothermal reduction of graphene oxide (GO) in N-methyl-2-pyrrolidone (NMP) suspension was performed, wherein GO surface were functionalized by free radicals generated from NMP molecules. The NMP functionalized reduced GO (NMPG) nanosheets were then incorporated into epoxy matrix to prepare epoxy composites. The significant improvement of 100 and 240% in fracture toughness (critical intensity factor, K-IC) and fracture energy (critical strain energy release rate, G(IC)) achieved from single edge notched bending (SENB) test revealed the excellent toughening ability of NMPG. The improved compatibility and interfacial interaction between the epoxy matrix and NMPG yielded similar to 28, 19 and 51% improvement in tensile strength, Young's and storage modulus, respectively. Thermal stability of pure epoxy and its composites was determined at 5, 10 and 50% weight loss, which showed 30, 27.5 and 29 degrees C improvement with 0.2 wt% NMPG loading. The work provides a simple method to prepare graphene-based epoxy composites with improved performance. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1 / 11

页数：11

共 41 条

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