Microstructural and thermo-mechanical characterization were performed on epoxy-clay nanocomposites, to be used as matrix for continuous carbon fiber reinforced composites, containing various amounts of clays having different hydrophilicity. XRD tests displayed that the dispersion degree of the clay lamellae was strictly correlated to their hydrophilicity, while DSC tests revealed that the crosslinking degree was negatively affected by the presence of most hydrophilic clays. Therefore, the balance between polymer-filler interaction and crosslinking degree influenced the final properties of the resulting composites. The mechanical behaviour, both under quasi-static and impact conditions, was positively affected by resin nanomodification. Fracture toughness and threshold to crack initiation under cyclic loading were also interestingly improved. While the effect of nanoclay introduction on the quasi-static tensile properties of the carbon/epoxy laminates was negligible. Charpy impact tests on nanomodified epoxy/carbon fiber cross-ply laminates evidenced slight enhancements of the elastic modulus and of the energy adsorption capacity with respect to the unfilled epoxy-carbon composites. Moreover, drop weight test on laminates evidenced improvements in energy absorption capacity due to resin nanomodification. (C) 2011 Elsevier B.V. All rights reserved.

Thermo-mechanical characterization of epoxy/clay nanocomposites as matrices for carbon/nanoclay/epoxy laminates

Dorigato, Andrea;Pegoretti, Alessandro;
2011-01-01

Abstract

Microstructural and thermo-mechanical characterization were performed on epoxy-clay nanocomposites, to be used as matrix for continuous carbon fiber reinforced composites, containing various amounts of clays having different hydrophilicity. XRD tests displayed that the dispersion degree of the clay lamellae was strictly correlated to their hydrophilicity, while DSC tests revealed that the crosslinking degree was negatively affected by the presence of most hydrophilic clays. Therefore, the balance between polymer-filler interaction and crosslinking degree influenced the final properties of the resulting composites. The mechanical behaviour, both under quasi-static and impact conditions, was positively affected by resin nanomodification. Fracture toughness and threshold to crack initiation under cyclic loading were also interestingly improved. While the effect of nanoclay introduction on the quasi-static tensile properties of the carbon/epoxy laminates was negligible. Charpy impact tests on nanomodified epoxy/carbon fiber cross-ply laminates evidenced slight enhancements of the elastic modulus and of the energy adsorption capacity with respect to the unfilled epoxy-carbon composites. Moreover, drop weight test on laminates evidenced improvements in energy absorption capacity due to resin nanomodification. (C) 2011 Elsevier B.V. All rights reserved.
2011
19-20
Dorigato, Andrea; Pegoretti, Alessandro; M., Quaresimin
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: https://hdl.handle.net/11572/86828
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 50
  • ???jsp.display-item.citation.isi??? 45
  • OpenAlex ND
social impact