Table 4.
Mechanical properties of the prepared reference and flame-retarded samples.
| No. | Sample Code | Tensile Strength [MPa] | Young’s Modulus [GPa] | Elongation at Break [%] | Flexural Strength [MPa] | Flexural Modulus [MPa] |
|---|---|---|---|---|---|---|
| 1 | EP ref | 55.5 ± 8.4 | 2.4 ± 0.5 | 3.7 ± 2.1 | 67.7 ± 10.2 | 2.41 ± 0.5 |
| 2 | EP + CNT ref | 39.8 ± 15.7 | 3.0 ± 0.4 | 3.1 ± 3.0 | 76.9 ± 7.5 | 2.93 ± 0.4 |
| 3 | EP + CF ref | 452.5 ± 52.9 | 67.6 ± 12.2 | 0.5 ± 0.2 | 635.7 ± 135 | 62.5 ± 3.72 |
| 4 | EP + CNT + CF ref | 559.2 ± 80.5 | 99.2 ± 7.2 | 0.5 ± 0.1 | 974.5 ± 19.2 | 71.2 ± 2.57 |
| 5 | EP + CNF(CNT) + CF ref | 452.7 ± 31.5 | 81.2 ± 15.7 | 0.5 ± 0.2 | 502.8 ± 46.5 | 52.8 ± 9.1 |
| 6 | EP + CNF(CNT) + CNT + CF ref | 444.0 ± 48.3 | 82.3 ± 6.4 | 0.5 ± 0.0 | 841.2 ± 123 | 71.8 ± 1.4 |
| 7 | EP FR | 6.95 ± 1.3 | 0.64 ± 0.2 | 13.9 ± 5.7 | 3.98 ± 1.9 | 0.13 ± 0.08 |
| 8 | EP + CNT FR | 4.54 ± 0.2 | 0.07 ± 0.01 | 12.8 ± 2.2 | 1.95 ± 0.02 | 0.04 ± 0.02 |
| 9 | EP + CF FR | 252.9 ± 28.1 | 40.2 ± 9.8 | 0.7 ± 0.0 | 245.2 ± 37.5 | 39.1 ± 4.93 |
| 10 | EP + CNT + CF FR | 300.8 ± 73.8 | 68.1 ± 8.1 | 0.6 ± 0.2 | 394.6 ± 26.7 | 57.0 ± 2.3 |
| 11 | EP + CNF(CNT) + CF FR | 194.4 ± 38.7 | 29.5 ± 14.9 | 0.7 ± 0.2 | 75.0 ± 9.4 | 5.15 ± 0.7 |
| 12 | EP + CNF(CNT) + CNT + CF FR | 278.4 ± 41.2 | 41.5 ± 1.9 | 0.6 ± 0.0 | 63.1 ± 12.5 | 4.71 ± 1.7 |