Table 3.
Mechanical properties of PUs 9–11 and PU composites 12–14.
| Substrates | Density (kg/m3) | Compressive Strength (MPa) |
|---|---|---|
| 9 | 260 ± 10 | 2.03 ± 0.04 |
| 10 | 970 ± 10 | 0.95 ± 0.05 |
| 11 | 270 ± 10 | - |
| 12 | 290 ± 10 | 2.41 ± 0.09 |
| 13 | 1000 ± 10 | 1.10 ± 0.06 |
| 14 | 280 ± 10 | - |
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