Title: On localization of carbon nanotubes in woven glass fiber/epoxy composites and its effect on tensile properties
Authors: Gorbatikh, Larissa
Haesch, Alexander
Clarkson, Thijs
Ivens, Jan
Lomov, Stepan Vladimirovitch
Verpoest, Ignace
Issue Date: 24-Jun-2012
Publisher: University of Padova
Host Document: 15th European Conference on Composite Materials pages:1-7
Series Title: European Conference on Composite Materials
Conference: European Conference on Composite Materials edition:15 location:Venice, Italy date:24-28 June 2012
Article number: 1445
Abstract: The dispersion of carbon nanotubes (CNTs) in epoxy resins that are to be used as a matrix
material in fiber-reinforced composites is commonly targeted to be homogeneous and free of
agglomerates. In the present paper we report experimental observations, showing that the
uniform distribution of CNTs in fiber-reinforced composites is not necessarily a desired
feature. The study was performed on a woven glass fiber composite produced using resin
transfer moulding. Two different localization states of CNTs were achieved by choosing
matrices with different dispersion qualities. For the resin with large agglomerates, CNTs
tended to localize in the resin rich zones, while for the resin with smaller agglomerates, CNTs
were somewhat homogeneously distributed in a composite. The CNT distribution/localization
showed to influence the strain-to-failure of a composite and the density of transverse cracks.
The composite with localized CNTs in the resin rich zones had a higher strain-to-failure (by
12%) and lower crack density (by 29%) in comparison with the virgin composite.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Structural Composites and Alloys, Integrity and Nondestructive Testing
Technologiecluster Materialentechnologie
Materials Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver

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