Mechanical properties of graphene nanoplatelet/epoxy composites
By J. King, Danielle R. Klimek, Ibrahim Miskioglu, Gregory M. Odegard. 2013
437 citations recorded by the source corpus.
Due to their high specific stiffness, carbon-filled epoxy composites can be used in structural components in aircraft. Graphene nanoplatelets are short stacks of individual layers of graphite that are a newly developed, lower cost material that often increases the composite tensile modulus. In this work, researchers fabricated neat aerospace epoxy (EPON 862 with Curing Agent W) and 1 to 6 wt% of two different types of graphene nanoplatelets (XG Sciences xGnP®-M-5 and xGnP®-C-300) in epoxy composites. These materials were tested for tensile properties using typical macroscopic measurements. In addition, nanoindentation was used to determine modulus and creep compliance. The macroscopic measurements showed that the tensile modulus increased from 2.72 GPa for the neat epoxy to 3.35 GPa for 6 wt% (3.7 vol%) xGnP®-M-5/epoxy composite and 3.10 GPa for 6 wt% (3.7 vol%) xGnP®-C-300/epoxy composite. The modulus results from nanoindentation followed this same trend. xGnP®-C-300/epoxy composites had higher tensile strength and ductility compared to similar loading levels of xGnP®-M-5/epoxy composites. The creep compliance for the neat epoxy, 1 to 6 wt% xGnP®-M-5/epoxy composites, and 1 to 6 wt% xGnP®-C-300/epoxy composites were similar. The two dimensional randomly oriented filler Halpin-Tsai model adjusted for platelet filler shape predicts the tensile modulus well for the xGnP®-M-5/epoxy composites and the three-dimensional randomly oriented filler Halpin-Tsai model works well for the xGnP®-C-300/epoxy composites. Per the authors’ knowledge, mechanical properties and modeling for xGnP®-M-5 and xGnP®-C-300 in this epoxy system has never been reported in the open literature.
Subfields: Mechanical Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/535120a3ef3efe1ee45989a5a560660d9abd388a
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In Mechanical Engineering
In Mechanics of Materials
- D. R. Klimek-McDonald
- L. Drzal
- S Gowtham
- E. Pineda
- Y. Qin
- Alex M. Reichanadter
- Gregory M. Odegard
- I. Kinloch
Citations in the corpus
- Mechanical properties of graphene nanoplatelet/carbon fiber/epoxy hybrid composites: multiscale modeling and experiments (2015, methodology): “It has been demonstrated [1, 3, 4] that the effect of GNPs on GNP/polymer composite mechanical properties is governed by the amount of GNPs added to the polymer and the dispersion of the GNPs within the polymer.”
- Buckling and postbuckling of functionally graded multilayer graphene platelet-reinforced composite beams (2017, neutral): “[13] measured the modulus of graphene nanoplatelet (GNP)/epoxy composites by using nanoindentation.”
- Mechanical properties and thermal conductivity of graphene nanoplatelet/epoxy composites (2015, background): “tensile strength of epoxy after incorporation of graphene platelets is also reported elsewhere [16, 26, 27].”
- Mechanical properties of graphene and graphene-based nanocomposites (2017, methodology): “(a) Experimental values and fitting with the Halpin-Tsai theory for an epoxy/GNP set of samples [328].”