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

Journal of Composites Science

卷:1

Alessandro Pegoretti¹  Haroon Mahmood¹  Seraphin H. Unterberger² 

[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;

关键词: multifunctional composites;    graphene;    fiber-matrix interphase;    thermal conductivity;    electrical resistivity;   

DOI  :  10.3390/jcs1020012

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown