Fabrication of Graphene Nanoplatelet/Epoxy Nanocomposites for Lightweight and High-Strength Structural Applications

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Graphene nanoplatelets (GNPs), the most important mass-produced graphene, are fabricated as a mechanical reinforcement for epoxy matrix nanocomposites. Current performance of GNPs as a reinforcing filler is limited by their agglomeration and weak interfacial interaction with certain polymer matrices. Herein, an approach to produce noncovalently functionalized GNPs (F-GNPs) is reported that can be extended to the industrial level of mass production. The one-step functionalization process uses melamine, a low-cost chemical, to improve the interfacial adhesion and dispersion in an epoxy matrix. The mechanical properties of nanocomposites prepared with the F-GNP flakes are much better (94.3% and 35.3% enhancements in Young's modulus and tensile strength, respectively) than those of the unfilled pure epoxy. Experimental data are analyzed using the Halpin-Tsai model. The fabrication process developed in this paper provides a strategy to use GNPs at the industrial level in lightweight and high-strength structural applications.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

EXFOLIATED GRAPHITE NANOPLATELETS; FRACTURE-TOUGHNESS; CARBON NANOTUBES; COMPOSITES; FUNCTIONALIZATION; CONDUCTIVITY; CATECHOLAMINE; IMPROVEMENT; FIBERS; SHEETS

Citation

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, v.35, no.6

ISSN
0934-0866
DOI
10.1002/ppsc.201700412
URI
http://hdl.handle.net/10203/244317
Appears in Collection
MS-Journal Papers(저널논문)
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