Abstract
Nanomaterials have been developed as an alternative to composites due to their superior mechanical properties, thermal stability and lightweight. In this study, tensile and hardness tests on different proportions of multi-walled carbon nanotube (MWCNT) reinforced/unreinforced polyurethane nanocomposite materials under static loading were investigated. They were prepared according to ASTM D638 standard and reinforced with MWCNT with the mass ratio of 0.25%, 0.35% and 0.45%. Their modulus of elasticity, tensile strength, toughness, elongation and hardness values were compared with those of pure polyurethane. The hardness measurements were carried out according to the Shore D scale. While the tensile strength and modulus of elasticity of the pure polyurethane materials were 20.94 MPa and 0.601 GPa, the values of the polyurethane nanocomposite materials reinforced with 0.35% MWCNT was 23.21 MPa and 1.077 GPa. The reinforced MWCNTs increased these values by 11.0% and 0.79, respectively. In addition, fractured surfaces were examined using a scanning electron microscope (SEM) to determine the damage mechanisms.
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