Research Article
Effects of CNT Diameter on the Uniaxial Stress-Strain Behavior of CNT/Epoxy Composites
Table 1
Tensile strength, Young's modulus, and fracture strain of CNT/epoxy composites.
| | Average tensile strength of CNT/epoxy composites (percentage increase) |
| | CNT weight percentage | CNT diameter | | nm (MPa) | nm (MPa) |
| | 0 (neat epoxy) | |
| | 1 wt% | (66.1%) | (42.7%) | | 2 wt% | 46.03 (79.3%) | 38.97 (51.8%) | | 3 wt% |
(87.1%) |
(65.6%) | | 4 wt% | 51.10 (99.1%) | 45.78 (78.3%) | | 5 wt% |
(106%) |
(82.3%) |
| | Average Young's modulus of CNT/epoxy composites (percentage increase) |
| | CNT weight percentage | CNT diameter | | nm
(GPa) | nm
(GPa) |
| | 0
(neat epoxy) | |
| | 1 wt% |
(28.6%) |
(22.6%) | | 2 wt% | 4.18 (47.7%) | 3.74 (32.2%) | | 3 wt% | (52.3%) | (44.9%) | | 4 wt% | 4.39 (55.1%) | 4.26 (50.5%) | | 5 wt% | (61.1%) | (54.1%) |
| | Average fracture strain of CNT/epoxy composites (percentage increase) |
| | CNT weight percentage | CNT diameter | | nm | nm |
| | 0 (neat epoxy) | |
| | 1 wt% | (36.8%) | (33.3%) | | 2 wt% | 1.11 (27.6%) | 1.05 (20.7%) | | 3 wt% | (32.2%) | (20.7%) | | 4 wt% | 1.20 (37.9%) | 1.08 (24.1%) | | 5 wt% | (35.6%) | (26.4%) |
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