Table 1. Tensile Properties of Neat SIS, CB-Filled NR, i-SIS(Na), and i-SIS(Ba) at Different Elongation Ratesa.
| sample | (ε̇0)b (s–1) | EYc (MPa) | σ300%d (MPa) | σmaxe (MPa) | εmaxf (−) | WTg (MJ m–3) |
|---|---|---|---|---|---|---|
| neat SIS | 1.0 | 2.4 ± 0.07 | 1.5 ± 0.01 | 21 ± 1 | 33 ± 0.9 | 210 ± 10 |
| 0.10 | 2.7 ± 0.03 | 1.1 ± 0.02 | 9.1 ± 0.2 | 29 ± 0.2 | 110 ± 1 | |
| 0.010 | 2.5 ± 0.2 | 1.3 ± 0.05 | 6.1 ± 0.5 | 24 ± 1 | 77 ± 8 | |
| CB-filled NR | 1.0 | 3.7 ± 0.1 | 3.3 ± 0.02 | 11 ± 0.7 | 11 ± 0.5 | 61 ± 6 |
| 0.10 | 4.1 ± 0.1 | 3.0 ± 0.06 | 8.6 ± 1.0 | 9.7 ± 0.9 | 45 ± 8 | |
| 0.010 | 3.7 ± 0.2 | 2.8 ± 0.05 | 8.5 ± 0.9 | 10 ± 0.8 | 46 ± 7 | |
| i-SIS(Na) | 1.0 | 9.1 ± 0.07 | 5.6 ± 0.2 | 45 ± 3 | 25 ± 1 | 520 ± 50 |
| 0.10 | 9.8 ± 0.9 | 5.6 ± 0.2 | 43 ± 0.9 | 26 ± 0.7 | 480 ± 18 | |
| 0.010 | 6.2 ± 0.5 | 3.2 ± 0.1 | 23 ± 2 | 27 ± 2 | 280 ± 31 | |
| i-SIS(Ba) | 1.0 | 7.7 ± 0.5 | 14 ± 0.9 | 27 ± 1 | 11 ± 0.8 | 190 ± 15 |
| 0.10 | 8.8 ± 0.3 | 11 ± 0.6 | 27 ± 0.7 | 14 ± 0.4 | 230 ± 1 | |
| 0.010 | 10 ± 0.7 | 11 ± 0.2 | 28 ± 2 | 17 ± 0.4 | 280 ± 21 |
a
Average value was estimated by measuring three test specimens of the same sample. The standard error of the mean for three measurements is also shown.
b
Initial strain rate.
c
Young’s modulus estimated from the slope within a strain range from 0 to 10%.
d
Tensile stress at a strain of 300%.
e
Tensile strength.
f
Elongation at break.
g
Tensile toughness estimated from the inner area of a stress–strain curve.