Table 5.
The physico-mechanical properties of prepared foams.
| Parameter | Sample | |||||
|---|---|---|---|---|---|---|
| PU | GTRTM | GTR20FO | GTR40FO | GTR20WO | GTR40WO | |
| Sol fraction content, % | 2.3 ± 0.3 | 10.2 ± 0.3 | 16.0 ± 0.1 | 13.1 ± 0.2 | 9.4 ± 0.2 | 8.8 ± 0.3 |
| Compressive strength at 50% deformation, kPa | 45.1 ± 3.8 | 21.6 ± 1.3 | 17.7 ± 0.7 | 22.1 ± 2.0 | 34.4 ± 2.9 | 41.3 ± 1.8 |
| Tensile strength, kPa | 230 ± 6 | 171 ± 11 | 98 ± 5 | 126 ± 5 | 185 ± 8 | 217 ± 14 |
| Elongation at break, % | 195 ± 4 | 149 ± 11 | 121 ± 7 | 145 ± 14 | 162 ± 13 | 167 ± 2 |
| Toughness, J/dm3 | 208 ± 18 | 117 + 23 | 60 ± 5 | 85 ± 10 | 145 ± 16 | 170 ± 15 |
| Storage modulus at 22 °C, kPa | 1358 | 226 | 195 | 427 | 534 | 1333 |
| Tan δ at 22 °C | 0.61 | 0.61 | 0.62 | 0.60 | 0.58 | 0.49 |
| Tg, °C | 20.7 | 13.6 | 13.0 | 15.3 | 16.9 | 20.0 |