Effect of carbon nanotubes on the interfacial shear strength of T650 carbon fiber in an epoxy matrix

The interfacial shear strength of carbon nanotube coated carbon fibers in epoxy was studied using the single-fiber composite fragmentation test. The carbon fibers were coated with carbon nanotubes (CNT) on the fiber surface using thermal chemical vapor deposition (CVD). The CVD process was adjusted...

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Bibliographic Details
Published in:Composites science and technology 2009-06, Vol.69 (7), p.898-904
Main Authors: Sager, R.J., Klein, P.J., Lagoudas, D.C., Zhang, Q., Liu, J., Dai, L., Baur, J.W.
Format: Article
Language:English
Subjects:
A. Carbon fibres
A. Nano composites
A. Polymer–matrix composites (PMCs)
Applied sciences
B. Fibre/matrix bond
B. Fragmentation
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:The interfacial shear strength of carbon nanotube coated carbon fibers in epoxy was studied using the single-fiber composite fragmentation test. The carbon fibers were coated with carbon nanotubes (CNT) on the fiber surface using thermal chemical vapor deposition (CVD). The CVD process was adjusted to produce two CNT morphologies for the study: radially aligned and randomly oriented. The purpose of the CNT coating was to potentially produce a multifunctional structural composite. Results of the single-fiber fragmentation tests indicate an improvement in interfacial shear strength with the addition of a nanotube coating. This improvement can most likely be attributed to an increase in the interphase yield strength as well as an improvement in interfacial adhesion due to the presence of the nanotubes.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2008.12.021