Table 1 Physical and mechanical properties of nanocomposites and pristine polymer
From: Vegetable Oil-Based Hyperbranched Thermosetting Polyurethane/Clay Nanocomposites
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 |