Table 2.
Mechanical properties of neat epoxy, pre-crosslinked and non-crosslinked CTBN/epoxy blends.
| Sample | Modulus (MPa) | Tensile Strength (MPa) | Strain at Break (%) | Impact Strength (kJ/m2) |
|---|---|---|---|---|
| Neat epoxy | 2917 ± 16 | 78.7 ± 2.4 | 4.2 ± 0.7 | 1.25 ± 0.14 |
| 5-CTBN/E51 | 2601 ± 26 | 64.9 ± 1.9 | 4.3 ± 0.3 | 1.40 ± 0.17 |
| 5-CTBN(0.5)/E51 | 2745 ± 19 | 71.6 ± 2.6 | 4.5 ± 0.3 | 1.73 ± 0.06 |
| 5-CTBN(1.0)/E51 | 2754 ± 30 | 73.5 ± 1.3 | 5.0 ± 0.3 | 1.78 ± 0.23 |
| 5-CTBN(1.5)/E51 | 2773 ± 25 | 77.8 ± 0.8 | 5.6 ± 0.5 | 1.83 ± 0.11 |
| 5-CTBN(2.0)/E51 | 2695 ± 17 | 71.4 ± 1.8 | 4.6 ± 0.4 | 1.70 ± 0.23 |
| 10-CTBN/E51 | 2401 ± 32 | 61.1 ± 1.6 | 4.5 ± 0.3 | 1.68 ± 0.06 |
| 10-CTBN(0.5)/E51 | 2492 ± 42 | 66.6 ± 1.0 | 4.9 ± 0.4 | 1.71 ± 0.28 |
| 10-CTBN(1.0)/E51 | 2469 ± 12 | 67.6 ± 0.4 | 5.3 ± 0.3 | 1.81 ± 0.16 |
| 10-CTBN(1.5)/E51 | 2476 ± 22 | 68.0 ± 0.5 | 5.8 ± 0.5 | 1.90 ± 0.30 |
| 10-CTBN(2.0)/E51 | 2467 ± 17 | 63.8 ± 0.7 | 5.2 ± 0.1 | 1.74 ± 0.12 |
| 15-CTBN/E51 | 2135 ± 28 | 53.8 ± 0.9 | 4.7 ± 0.2 | 1.78 ± 0.20 |
| 15-CTBN(0.5)/E51 | 2244 ± 23 | 58.8 ± 0.5 | 5.0 ± 0.8 | 1.83 ± 0.06 |
| 15-CTBN(1.0)/E51 | 2235 ± 30 | 58.9 ± 0.4 | 5.4 ± 0.8 | 1.93 ± 0.08 |
| 15-CTBN(1.5)/E51 | 2253 ± 15 | 60.0 ± 0.3 | 6.6 ± 0.7 | 1.95 ± 0.14 |
| 15-CTBN(2.0)/E51 | 2191 ± 7 | 57.6 ± 0.7 | 5.0 ± 0.3 | 1.80 ± 0.12 |