Toughening of carbon fibre reinforced polymer composites with nano rubber for advanced industrial applications

Nazli Gulsine Ozdemir, T Zhang, Ian Aspin, Fabrizio Scarpa, Homayoun Hadavinia, Y Song

Research output: Contribution to journalArticle (Academic Journal)peer-review

34 Citations (Scopus)
283 Downloads (Pure)

Abstract

This study investigates the effects of nano carboxylic acrylonitrile butadiene rubber (CNBR-NP) and nano acrylonitrile butadiene rubber (NBR-NP) on the interlaminar shear strength and fracture toughness of carbon fibre reinforced polymer composites (CFRP) with dicyandiamide-cured epoxy matrix. The results show that nano-size dispersion of rubber significantly improved the Mode I delamination fracture toughness (GIC) of the CFRP by 250% and its Mode II delamination fracture toughness (GIIC) by 80% with the addition of 20 phr of CNBR-NP. For the NBR-NP system, the GIC and GIIC delamination fracture toughness of the CFRP were increased by 200% and 80% respectively with the addition of 20 phr of nano rubber to the matrix. Scanning electron microscopy (SEM) images of the fracture surface revealed that the toughening was mainly achieved by debonding of the nano rubber, crack path deflection and fibre bridging.
Original languageEnglish
Pages (from-to)394-407
Number of pages11
JournaleXPRESS Polymer Letters
Volume10
Issue number5
Early online dateMar 2016
DOIs
Publication statusPublished - May 2016

Keywords

  • polymer composites
  • processing technologies
  • nanomaterials
  • mechanical properties
  • nanocomposites

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