Synergetic role of nanoparticles and micro-scale short carbon fibers on the mechanical profiles of epoxy resin

G. Zhang, Z. Rasheva, J. Karger-Kocsis, T. Burkhart

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

It was demonstrated in our previous work that the combined carbon nanofibers (CNFs) and microsized short carbon fibers (SCFs) in epoxy (EP) leads to significant improvements in the mechanical properties of the matrix. In this work, the effect of nano-SiO 2 particles, having an extremely different aspect ratio from CNFs, on the tensile property and fracture toughness of SCFs-filled EP was studied. It was revealed that the combined use of SCFs and silica nanoparticles exerts a synergetic effect on the mechanical and fracture properties of EP. Application of SCFs and the nanoparticles is an effective way to greatly enhance the modulus, strength and fracture toughness of the EP simultaneously. The synergetic role of the multiscale fillers was explained by prominent changes in the stress state near the microsized fillers and the plastic zone ahead of the crack tip. The synergetic role of multiscale fillers is expected to open up new opportunities to formulate highperformance EP composites.

Original languageEnglish
Pages (from-to)859-872
Number of pages14
JournalExpress Polymer Letters
Volume5
Issue number10
DOIs
Publication statusPublished - Oct 1 2011

Keywords

  • Epoxy
  • Fracture toughness
  • Mechanical properties
  • Nanocomposites
  • Short carbon fibers

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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