Electromagnetic Interference Shielding and Electrical Conductivity of Carbon Nanotube/Polycarbonate Nanocomposites

This paper concentrates on improving electrical and electromagnetic properties of Polycarbonate nanocomposites containing multiwalled carbon nanotubes (MWCNTs). A series of polycarbonate nanocomposites with 7 different contents of CNTs was produced via melt mixing. Electrical measurements indicated an electrical percolation threshold of 0.75 wt. % CNTs for this system. The EMI shielding measurements in the X-band (8.2 to 12.4 GHz), indicated that electromagnetic properties are increased by increasing the amount of CNTs specially up to 3 wt. %. Introducing more amounts of nanotubes does not changed EMI properties very much

Keywords:

electromagnetic interference shielding , electrical conductivity , nanocomposite , carbon nanotube , polycarbonate