Low weight content of functionalized graphene (G*) and graphene oxide (GO) have been mixed with a matrix of low-density polyethylene (LDPE). The fabrication method consists of two steps: ball-milling and thermal pressing. Broadband Dielectric Spectroscopy (BDS) and Thermal Gravimetric Analysis (TGA) were carried out and the results were compared with the neat LDPE measurements. From the BDS characterization, differences in the complex permittivity, as a function of the frequency, can be observed among the samples. The module of the ac electrical conductivity was observed to remain unchanged unless relatively high wt% of filler was included and/ or high voltage was applied. Improvements of the thermal stability has been detected with the TGA characterization for both types of composites.
Electric and thermal properties of polyethylene-based nanodielectrics containing graphene-like additives / Pirondelli, A.; Fabiani, D.; Frechette, M.; Vanga Bouanga, C.; Guo, M.; David, E.. - ELETTRONICO. - (2016), pp. 615-618. (Intervento presentato al convegno 2016 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) tenutosi a Toronto, Canada nel 2016) [10.1109/CEIDP.2016.7785597].
Electric and thermal properties of polyethylene-based nanodielectrics containing graphene-like additives
FABIANI, DAVIDE;
2016
Abstract
Low weight content of functionalized graphene (G*) and graphene oxide (GO) have been mixed with a matrix of low-density polyethylene (LDPE). The fabrication method consists of two steps: ball-milling and thermal pressing. Broadband Dielectric Spectroscopy (BDS) and Thermal Gravimetric Analysis (TGA) were carried out and the results were compared with the neat LDPE measurements. From the BDS characterization, differences in the complex permittivity, as a function of the frequency, can be observed among the samples. The module of the ac electrical conductivity was observed to remain unchanged unless relatively high wt% of filler was included and/ or high voltage was applied. Improvements of the thermal stability has been detected with the TGA characterization for both types of composites.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
