4.7 Article

Synergistic effect of carbon nanotubes and n-butyl glycidyl ether on matrix modification for improvement of tensile performance of glass fiber/epoxy composites

Journal

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2014.03.015

Keywords

Glass fiber; Strength; Fractography

Funding

  1. National Natural Science Foundation of China [10972216, 51073169, 11002141]
  2. Beijing Municipal Natural Science Foundation [2122055]
  3. National Basic Research Program of China [2010CB934500]

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In this work, an epoxy resin was modified by stiff multi-walled carbon nanotubes (MWCNTs) and soft n-butyl glycidyl ether (BGE) and the modified epoxy resins were employed as the matrices for improvement of the tensile performance of glass fiber reinforced composites. The results indicated that the simultaneous addition of MWCNTs and BGE led to the greatest enhancements in the composite strength and modulus, demonstrating that their simultaneous introduction yielded a synergistic effect on the matrix modification for the improvement of the tensile performance of the GF/epoxy composites. The scanning electron microscope observations showed that the modified epoxy resins were substantially coated on the surfaces of GFs while the un-modified matrix was lightly attached on the GFs. The enhancements in the composite tensile performance were attributed to two aspects of enhanced GF strength/modulus and improved interfacial adhesion for the modified matrix compared to the un-modified case. (C) 2014 Published by Elsevier Ltd.

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