Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

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DOIResolve DOI: http://doi.org/10.1016/j.compscitech.2011.06.015
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TypeArticle
Journal titleComposites Science and Technology
Volume71
Issue13
Pages15691578; # of pages: 10
SubjectA. Carbon nanotube; A. Carbon filter; B. Impact behavior; B. Interface; Multiscale composites
AbstractCarbon nanotubes (CNT) in their various forms have great potential for use in the development of multifunctional multiscale laminated composites due to their unique geometry and properties. Recent advancements in the development of CNT hierarchical composites have mostly focused on multi-walled carbon nanotubes (MWCNT). In this work, single-walled carbon nanotubes (SWCNT) were used to develop nano-modified carbonfiber/epoxylaminates. A functionalization technique based on reduced SWCNT was employed to improve dispersion and epoxy resin-nanotube interaction. A commercial prepregging unit was then used to impregnate unidirectional carbonfiber tape with a modified epoxy system containing 0.1 wt% functionalized SWCNT. Impact and compression-after-impact (CAI) tests, Mode I interlaminar fracture toughness and Mode II interlaminar fracture toughness tests were performed on laminates with and without SWCNT. It was found that incorporation of 0.1 wt% of SWCNT resulted in a 5% reduction of the area of impact damage, a 3.5% increase in CAI strength, a 13% increase in Mode I fracture toughness, and 28% increase in Mode II interlaminar fracture toughness. A comparison between the results of this work and literature results on MWCNT-modified laminated composites suggests that SWCNT, at similar loadings, are more effective in enhancing the mechanicalperformance of traditional laminated composites.
Publication date
LanguageEnglish
AffiliationNRC Institute for Aerospace Research; NRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19739634
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Record identifier53b9cec6-0ef6-48ea-8723-e930086f03a1
Record created2012-04-02
Record modified2016-05-09
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