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Physical and mechanical properties of nanocomposites and pristine polymer
| Properties | HBPU | HBPU1 | HBPU2.5 | HBPU5 |
|---|---|---|---|---|
| Impact resistance (cm) | 92 | 97 | 97.5 | 99 |
| Bending (dia. mm) | <5 | <5 | <5 | <5 |
| Gloss (60°) | 79.0 | 78 | 77 | 77 |
| Scratch hardness (kg) | 4.2 | 8.5 | 9.2 | 9.8 |
| Specific gravity | 1.16 | 1.17 | 1.19 | 2.00 |
| Tensile strength (MPa) | 30.20 | 40.03 | 45.62 | 48.1 |
| Elongation at break (%) | 510 | 472.17 | 454.36 | 440.21 |
| Lap-shear adhesion (MPa) | 6.42 | 8.56 | 9.31 | 11.68 |
