Equivalent electric circuits allowing the simulation of the behaviour of nanocomposites based on thermosetting resin and nanocarbon filler over a broad range of frequency are presented. The electric circuits are constructed by employing a multi-step simple procedure in which the values and number of the parameters are adjusted until a suitable criterion, based on the comparison between simulated and experimental frequency spectra is satisfied. An RC simple parallel branch in parallel with a variable number of RC series branches is shown to be capable to reproduce the frequency response of a pre-percolative carbon black and two carbon nanotube (CNT) nanocomposites with CNT concentration close to the percolation threshold. The obtained equivalent circuits may be employed in circuit simulators for first-approximation design of EM devices based on such composites for. Moreover, they allow an interpretation of the physical mechanisms underlying the EM behaviour of the composites.
Equivalent electric circuits for the comparison of nanocarbon-based epoxy resin systems
DE VIVO, BIAGIO;LAMBERTI, PATRIZIA;TUCCI, Vincenzo;
2012-01-01
Abstract
Equivalent electric circuits allowing the simulation of the behaviour of nanocomposites based on thermosetting resin and nanocarbon filler over a broad range of frequency are presented. The electric circuits are constructed by employing a multi-step simple procedure in which the values and number of the parameters are adjusted until a suitable criterion, based on the comparison between simulated and experimental frequency spectra is satisfied. An RC simple parallel branch in parallel with a variable number of RC series branches is shown to be capable to reproduce the frequency response of a pre-percolative carbon black and two carbon nanotube (CNT) nanocomposites with CNT concentration close to the percolation threshold. The obtained equivalent circuits may be employed in circuit simulators for first-approximation design of EM devices based on such composites for. Moreover, they allow an interpretation of the physical mechanisms underlying the EM behaviour of the composites.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
