Abstract:
High strain rate experiments performed on multi-walled carbon
nanotubes, polycarbonate composites (MWCNT-PC) have exhibited enhanced impact resistance under a dynamic strain rate of
nearly 2500/s with composition of only 0.5 to 2.0% multi-walled
carbon nanotubes (MWCNTs) in pure polycarbonate (PC). Similarly, hardness and elastic modulus under static loads resulted in
a significant increase, depending upon the composition of MWCNTs in PC. The present work aims to analyze these results by
correlating the data to fit expressions in generalizing the behavior of MWCNTs composition for MWCNT-PC composites under
both static and impact loads. As a result, we found that an optimum
composition of 2.1 weight % of MWCNTs exhibits maximum stress
resistance within elastic range under strain rates of nearly 2500/s
for MWCNT-PC composites. The composition of MWCNTs plays
a crucial role in maximizing modification of static and dynamic
impact-based mechanical properties of polycarbonates. Further,
a simple model based on Lennard–Jones 6–12 atom-atom based
potential is formulated and used to compute preliminary estimates
of static properties of pure as well as composite PC with the aim to
modify this in subsequent approaches.
