An aeronautic epoxy resins with enhanced mechanical properties is morphologically and electrically characterized to study the effect of different percentages of exfoliated graphite (EG) inclusion. In particular, nanocomposites filled with graphite, characterized by 56% of the exfoliation degree and Brunauer-Emmett-Teller (BET) specific surface area of 14.7 m2/g were prepared with loading levels from 0.32% to 6.5% by weight (wt). The morphological characterizations show the peculiarities of the filler dispersion. The DC electrical characterization puts in evidence a percolation threshold (EPT) lower than 3% wt and an electrical conductivity of about 0.66 S/m in the case of samples filled at 6.5% wt. The AC electrical characterization in the frequency range 100Hz-1MHz of the nanocomposites is also reported in order to investigate the material properties around the EPT.

Morphological and electrical characterization of epoxy resin filled with exfoliated graphite

GUADAGNO, Liberata;RAIMONDO, MARIALUIGIA;DE VIVO, BIAGIO;LAMBERTI, PATRIZIA;SPINELLI, GIOVANNI;TUCCI, Vincenzo
2015

Abstract

An aeronautic epoxy resins with enhanced mechanical properties is morphologically and electrically characterized to study the effect of different percentages of exfoliated graphite (EG) inclusion. In particular, nanocomposites filled with graphite, characterized by 56% of the exfoliation degree and Brunauer-Emmett-Teller (BET) specific surface area of 14.7 m2/g were prepared with loading levels from 0.32% to 6.5% by weight (wt). The morphological characterizations show the peculiarities of the filler dispersion. The DC electrical characterization puts in evidence a percolation threshold (EPT) lower than 3% wt and an electrical conductivity of about 0.66 S/m in the case of samples filled at 6.5% wt. The AC electrical characterization in the frequency range 100Hz-1MHz of the nanocomposites is also reported in order to investigate the material properties around the EPT.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4671111
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact