Aspect ratio effects of single-walled carbon nanotubes on electrical conductivity of high density polyethylene/carbon nanotube nano-composites

In this work for assessment of electrical conductivity of high density polyethylene-carbon nanotube (HDPECNT)nano-composite three different aspect ratios (length to diameter) for CNTs were analyzed: 1000, 2000 and 4000.Finite element method was used to obtain electrical properties. We concluded that increasing of CNT aspect ratio wasequal to decreasing of percolation threshold. We obtained an approximated relationship for calculation of percolationthreshold depended on CNT aspect ratio. The results of the simulation were compared with the theoretical andexperimental ones.

Keywords:

Aspect ratio , carbon nanotube , electrical conductivity , high density polyethylene , nano composite