Effects of nylon 6,6 nanofibrous mats on thermal properties and delamination behavior of high performance CFRP laminates

Sabina Alessi, Maria Di Filippo, Clelia Dispenza, Maria Letizia Focarete, Chiara Gualandi, Roberto Palazzetti, Giuseppe Pitarresi, Andrea Zucchelli

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Nylon 6,6 electrospun nanofibrous membranes interleaved in “high performance” Carbon Fiber Reinforced Polymer (CFRP) laminates have been proposed as a means to provide a high threshold value to delamination on structural sites where composites are more prone to develop such failure. A model, highly crosslinked, thus inherently brittle, epoxy matrix was selected for its high Young's modulus and glass transition temperature exceeding 250°C. The influence of the Nylon 6,6 nanofibers on the curing behavior of the matrix and on the thermal and dynamic mechanical properties of the cured resin was investigated. These properties were related to the features of the epoxy resin and of the resin impregnated nanofibrous mat. Finally, the delamination behavior of the composite laminates interleaved with Nylon interleaves with different thicknesses was studied through Mode I delamination tests on Double Cantilever Beam (DCB) samples. The results show that the initial Mode I fracture toughness was increased up to about 50% by the presence of the thin mat interleaf.
Original languageEnglish
Pages (from-to)1303-1313
Number of pages11
JournalPolymer Composites
Volume36
Issue number7
Early online date18 Apr 2014
DOIs
Publication statusPublished - Jul 2015

Keywords

  • nylon 6,6 electrospun nanofibrous membranes
  • high performance
  • carbon fiber reinforced polymer
  • CFRP
  • laminates
  • glass transition temperature

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    Alessi, S., Di Filippo, M., Dispenza, C., Focarete, M. L., Gualandi, C., Palazzetti, R., ... Zucchelli, A. (2015). Effects of nylon 6,6 nanofibrous mats on thermal properties and delamination behavior of high performance CFRP laminates. Polymer Composites, 36(7), 1303-1313. https://doi.org/10.1002/pc.23035