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J. Compos. Sci. 2017, 1(2), 12; doi:10.3390/jcs1020012

Tuning Electrical and Thermal Properties in Epoxy/Glass Composites by Graphene-Based Interphase

1
Department of Industrial Engineering, University of Trento, via Sommarive, 9-38123 Trento, Italy
2
Unit for Material Technology, University of Innsbruck, Technikerstraβe 13, 6020 Innsbruck, Austria
3
Christian Doppler Laboratory for Cement and Concrete Technology, Technikerstraße 13, 6020 Innsbruck, Austria
*
Author to whom correspondence should be addressed.
Received: 3 October 2017 / Revised: 21 October 2017 / Accepted: 25 October 2017 / Published: 28 October 2017
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Abstract

Multiscale epoxy/glass composites were fabricated by using E-glass fibers (GF) coated with different types of graphene nanosheets deposited by electrophoretic deposition. Graphene oxide (GO) was first synthesized using modified Hummer’s method and its subsequent ultrasonication in de-ionized water created a stable suspension of GO. GF were immersed in the water/GO suspension near a copper anode. The electrical potential applied between the electrodes caused GO to migrate towards the anode. Moreover, the GO coated yarns were exposed to hydrazine hydrate at 100 °C to obtain reduced graphene oxide (rGO) coated yarns. Both GO and rGO coated GF yarns were used to create unidirectional epoxy-based multiscale composites by hand lay-up. The presence of a conductive rGO coating on GF improved both the electrical and thermal conductivities of composites. Moreover, enhanced permittivity was obtained by rGO based epoxy/glass composites, thus giving the option of using such structures for electromagnetic interference shielding. View Full-Text
Keywords: multifunctional composites; graphene; fiber-matrix interphase; thermal conductivity; electrical resistivity multifunctional composites; graphene; fiber-matrix interphase; thermal conductivity; electrical resistivity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mahmood, H.; Unterberger, S.H.; Pegoretti, A. Tuning Electrical and Thermal Properties in Epoxy/Glass Composites by Graphene-Based Interphase. J. Compos. Sci. 2017, 1, 12.

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