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Title: Mode I interlaminar fracture behaviour and mechanical properties of CFRPs with nanoclay filled epoxy matrix
Authors: Siddiqui, Naveed A.
Woo, Ricky S. C.
Kim, Jang-Kyo
Leung, Christopher K. Y.
Munir, Arshad
Keywords: Organoclay
Modified epoxy composites
Mode I delamination resistance
Issue Date: Feb-2007
Citation: Composites part A : applied science and manufacturing, v. 38, iss. 2, Feb. 2007, p. 449-460
Abstract: The Mechanical properties and fracture behavior of nanocomposites and carbon fiber composites (CFRPs) containing organoclay in the epoxy matrix have been investigated. Morphological studies using TEM and XRD revealed that the clay particles within the epoxy resin were intercalated or orderly exfoliated. The organoclay brought about a significant improvement in flexural modulus, especially in the first few wt% of loading, and the improvement of flexural modulus was at the expense of a reduction in flexural strength. The quasi-static fracture toughness increased, whereas the impact fracture toughness dropped sharply with increasing the clay content.Flexural properties of CFRPs containing organoclay modified epoxy matrix generally followed the trend similar to the epoxy nanocomposite although the variation was much smaller for the CFRPs. Both the initiation and propagation values of model I interlaminar fracture toughness of CFRP composites increased with increasing clay concentration. In particular, the propagation fracture toughness almost doubled with 7wt% clay loading. A strong correlation was established between the fracture toughness of organoclay-modified epoxy matrix and the CFRP composite interlaminar fracture toughness.
Rights: Composites Part A : Applied Science and Manufacturing © copyright 2007 Elsevier. The Journal's web site is located at
Appears in Collections:MECH Journal/Magazine Articles
CIVL Journal/Magazine Articles

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