This paper shows the space charge behavior of LDPE-based nanomaterials containing graphene oxide as a filler. Space charge was evaluated through the pulse electroacoustic technique at 40 kV/mm and two temperatures, i.e. 20°C and 40°C. From experiments a massive bipolar charge injection and accumulation at room temperature is observed in the neat LDPE sample. In particular, a positive charge packet is injected from the anode and crosses quite rapidly the insulation, dominating space charge accumulation in the bulk. Charge packets are totally absent in LDPE-GO nanocomposites, thus leading to a lower space charge accumulation and consequently to a lower electric field distortion. The best space charge behavior is obtained with low filler concentration, i.e. < 0.1 wt%.
Effect of graphene-oxide content on space charge characteristics of PE-based nanocomposites / Fabiani, Davide; Mancinelli, Paolo; Vanga-Bouanga, Christele; Frechette, Michel F.; Castellon, Jerome. - STAMPA. - (2016), pp. 7548681.631-7548681.634. (Intervento presentato al convegno 34th Electrical Insulation Conference, EIC 2016 tenutosi a Montreal, Canada nel 2016) [10.1109/EIC.2016.7548681].
Effect of graphene-oxide content on space charge characteristics of PE-based nanocomposites
FABIANI, DAVIDE;MANCINELLI, PAOLO;
2016
Abstract
This paper shows the space charge behavior of LDPE-based nanomaterials containing graphene oxide as a filler. Space charge was evaluated through the pulse electroacoustic technique at 40 kV/mm and two temperatures, i.e. 20°C and 40°C. From experiments a massive bipolar charge injection and accumulation at room temperature is observed in the neat LDPE sample. In particular, a positive charge packet is injected from the anode and crosses quite rapidly the insulation, dominating space charge accumulation in the bulk. Charge packets are totally absent in LDPE-GO nanocomposites, thus leading to a lower space charge accumulation and consequently to a lower electric field distortion. The best space charge behavior is obtained with low filler concentration, i.e. < 0.1 wt%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
