Voltage–current characteristics of high-density polyethylene conductive composites

Abstract

The high-density polyethylene (HDPE) conductive composites filled separately with carbon fibers (CFs), ethylene-vinyl acetate copolymer (EVA), and three kinds of carbon blacks (CBs) (including different diameter, BET specific area, and DBP value) were prepared, to investigate the influence of the property, size, and content of the conductive fillers on the nonlinear voltage–current characteristics of the HDPE conductive composites. The results showed that the relationship between the electric current density and the electric field intensity of the three HDPE/CB composites including the HDPE/CF composites, the HDPE/CB/CF composites, and the HDPE/EVA/CB composites was nonlinear. The nonlinear conductivity index of the HDPE/CF composites was kept a low level comparing to the HDPE/CB composites, the HDPE/CB/CF composites, and the HDPE/EVA/CB composites. Moreover, the nonlinear conductive behavior mechanisms were discussed.

Keywords:

• Composites
• conduction
• nanoparticles
• physical properties
• polymers

Acknowledgement

The author thanks Dr. Q. Q. Yang who is from the South China University of Technology for his helping in the experiments.

Statement

1. There are no any funds for supporting this study.

2. There have no conflict of interest.

3. This is the author’s original study.