Journal
COMPOSITES PART B-ENGINEERING
Volume 43, Issue 4, Pages 2079-2086Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.01.049
Keywords
Vapor grown carbon nanofiber; Polymer-matrix composites (PMCs); Mechanical properties; Thermal properties; Nanocomposites
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This study compares the mechanical and thermal properties of glassy and rubbery epoxy-matrix composites reinforced with 1 and 4 wt.% single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphite, and carbon nanofibers (CNFs). The tensile modulus of most glassy composites was higher than that of the epoxy and increased with higher filler concentration and 4% graphite/epoxy and 4% SWCNT/epoxy exhibited approximately the same highest tensile modulus. The elongation of glassy composites was significantly lower than that of the epoxy and decreased with increasing filler loading. Most rubbery composites showed a higher tensile modulus and elongation than the epoxy and the modulus increased with rising filler content and 4% SWCNT/epoxy showed the highest tensile modulus and tensile strength. In the rubbery regime, glassy and rubbery composites displayed a higher storage modulus than the corresponding epoxy and 4 wt.% SWCNT/epoxy composites showed a 300% improvement in storage modulus compared to the epoxy. (C) 2012 Elsevier Ltd. All rights reserved.
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