In this paper, we propose to study the impact of very low filler content (0.005 wt.%) of graphite nanoflakes (80 nm), multi-layer (5-20 nm) and few-layer (1-2 nm) graphene on the electrical conductivity of an epoxy nanocomposite. The results highlight that an improvement of the quality of the exfoliation process of graphene, particularly in few-layer graphene/epoxy, allows decreasing the DC electrical conductivity (by a factor 100 compared to neat epoxy) in a large range of electric field from 1 to 10 kV/mm. This novel property could allow decreasing space charge trapping within the insulator bulk at the origin of long-term electrical ageing.
Diaham, S., Pizzutilo, E., Vieira, L.D.G.F., Nava, Z.V., Chane Ching, J., Flahaut, E., et al. (2015). Novel electrical conduction properties obtained in few-layer graphene/epoxy nanocomposites. Institute of Electrical and Electronics Engineers Inc. [10.1109/NANO.2015.7388640].
Novel electrical conduction properties obtained in few-layer graphene/epoxy nanocomposites
FABIANI, DAVIDE
2015
Abstract
In this paper, we propose to study the impact of very low filler content (0.005 wt.%) of graphite nanoflakes (80 nm), multi-layer (5-20 nm) and few-layer (1-2 nm) graphene on the electrical conductivity of an epoxy nanocomposite. The results highlight that an improvement of the quality of the exfoliation process of graphene, particularly in few-layer graphene/epoxy, allows decreasing the DC electrical conductivity (by a factor 100 compared to neat epoxy) in a large range of electric field from 1 to 10 kV/mm. This novel property could allow decreasing space charge trapping within the insulator bulk at the origin of long-term electrical ageing.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
