Title :
Thermal in situ reduction of graphene oxide in epoxy-based nanodielectrics: Influence on dielectric properties
Author :
Mancinelli, P. ; Heid, Thomas F. ; Fabiani, Davide ; Saccani, A. ; Toselli, M. ; Frechette, M.F. ; Savoie, S. ; David, E.
Author_Institution :
DEI, Univ. of Bologna, Bologna, Italy
Abstract :
Graphene oxide (GO) water solution has been added and mixed to epoxy resin. Water has been evaporated at low pressure and the resulting mixture has been cured through an amine. Heating GO-epoxy samples at 130°C in situ chemical reduction of GO has been carried out. Dielectric constant of these graphene-based samples shows an increase of more than 50% compared to neat epoxy even for 0.3 wt% of GO dispersed into the matrix. This procedure may open a new way on tuning electrical properties of insulating materials.
Keywords :
epoxy insulation; graphene; nanocomposites; permittivity; reduction (chemical); resins; thermal analysis; dielectric constant; dielectric properties; epoxy resin; epoxy-based nanodielectrics; graphene oxide water solution; graphene-based samples; heating GO-epoxy samples; in situ chemical reduction; insulating materials; temperature 130 degC; thermal in situ reduction; tuning electrical properties; Dielectrics; Dispersion; Graphene; Nanocomposites; Permittivity; Polymers; epoxy; graphene; graphene oxide reduction; nanocomposite; nanodielectric; permittivity change;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2013 IEEE Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CEIDP.2013.6748226
