Toughening Effects of Interleaved Nylon Veils on Glass Fabric/Low-Styrene-Emission Unsaturated Polyester Resin Composites

Kieran O'Donovan, Dipa Ray, Michael A. McCarthy

Research output: Contribution to journalArticlepeer-review

Abstract

The effectiveness of using interleaved nylon veils to increase the interlaminar toughness of glass fiber reinforced, low-styrene emission unsaturated polyester resin composites has been investigated. Samples were manufactured by a hand lay-up technique followed by compression moulding. Nylon 66 veils were used, with the veil content varying from 0% to 4% by weight. Double cantilever beam, short beam shear, and three point bend tests were performed. The increasing levels of nylon veil content improved the interlaminar toughness of the composites, which was characterized by critical strain energy release rate (GIC). The maximum GIC for crack propagation of a nylon interleaved composite increased by almost 170% over the baseline glass fiber reinforced composite. Dynamic Mechanical Analysis revealed an increase in the damping parameter of up to 117%. Image analysis via Digital Image Correlation and Scanning Electron Microscopy revealed increased fiber bridging between adjacent plies as a key reason for these improvements. (C) 2014 Wiley Periodicals, Inc.

Original languageEnglish
Article number41462
Number of pages9
JournalJournal of Applied Polymer Science
Volume132
Issue number7
DOIs
Publication statusPublished - 15 Feb 2015

Keywords

  • composites
  • fibers
  • mechanical properties
  • DISCONTINUOUS INTERLEAVES
  • MARINE APPLICATIONS
  • DAMAGE SUPPRESSION
  • MODE
  • TOUGHNESS
  • DELAMINATION
  • ENERGY

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