Reinforcing brittle and ductile epoxy matrices using carbon nanotubes masterbatch

Asghar H. Korayem, Mohammad Reza Barati, George P. Simon, Xiao Ling Zhao, Wen Hui Duan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

64 Citations (Scopus)


In this study, the mechanical and thermal properties of epoxy composites using two different forms of carbon nanotubes (powder and masterbatch) were investigated. Composites were prepared by loading the surface-modified CNT powder and/or CNT masterbatch into either ductile or brittle epoxy matrices. The results show that 3 wt.% CNT masterbatch enhances Young's modulus by 20%, tensile strength by 30%, flexural strength by 15%, and 21.1 C increment in the glass transition temperature (by 34%) of ductile epoxy matrix. From scanning electron microscopy images, it was observed that the CNT masterbatch was uniformly distributed indicating the pre-dispersed CNTs in the masterbatch allow an easier path for preparation of CNT-epoxy composites with reduced agglomeration of CNTs. These results demonstrate a good CNT dispersion and ductility of epoxy matrix play a key role to achieve high performance CNT-epoxy composites.

Original languageEnglish
Pages (from-to)126-133
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Publication statusPublished - Jun 2014
Externally publishedYes


  • A. Theromosetting resin
  • B. Mechanical properties
  • B. Thermal properties
  • D. Mechanical testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials


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