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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