期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 63, 期 11, 页码 1655-1661出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0266-3538(03)00059-9
关键词
polymer-matrix composites (PMCs); mechanical properties; stress/strain curves; computational simulation; carbon nanotubes
Stress-strain curves of polymer-carbon nanotube composites generated from molecular dynamics simulations of a single-walled carbon nanotube embedded in polyethylene are presented. A comparison is made between the response to mechanical loading of a composite with a long, continuous nanotube (replicated via periodic boundary conditions) and the response of a composite with a short, discontinuous nanotube. Both composites are mechanically loaded in the direction of, and transverse to, the nanotube axis. The long-nanotube composite shows an increase in the stiffness relative to the polymer and behaves anisotropically under the different loading conditions considered. The short-nanotube composite shows no enhancement relative to the polymer, most probably because of its low aspect ratio. The stress-strain curves from molecular dynamics simulations are compared with corresponding rule-of-mixtures predictions. Published by Elsevier Ltd.
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