Abstract
Carbon nanotubes have been used as a reinforcing element to improve the properties of polymer matrix. An attempt has been made to investigate the mechanical behavior of carbon nanotubes–high-density polyethylene (CNT–HDPE) nanocomposites using a small punch technique. The designed punch assembly was fabricated and mounted on the Universal Testing Machine. The experimental setup was calibrated using aluminum and mild steel where the relative error was found to be within 7%. The mechanical properties of the nanocomposites, were studied by varying the weight fraction of CNT in HDPE. It was found that Young's modulus and ultimate strength of nanocomposites were increased by 37% and 36%, respectively for 1 wt% of CNTs in HDPE and they were found to increase linearly with an increase in CNT concentration. It is concluded that the small punch technique was successfully developed and tested to characterize the mechanical properties of HDPE and CNT–HDPE nanocomposites.
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