Temperature-Resistivity Behaviour of CNTs/UHMWPE Composites with a Two-Dimensional Conductive Network

Abstract

Temperature-resistivity behaviour of carbon nanotubes (CNTs)/ultrahigh molecular weight polyethylene (UHMWPE) conductive composite with a 2-dimensional conductive network is investigated. The composite, in which CNTs were only dispersed in the interface of matrix particles, experiences a positive temperature coefficient of resistivity (PTCR) around the melting point followed by a negative temperature coefficient of resistivity (NTCR), and the resistivity begins to rise abruptly at the maximum crystallization temperature during cooling. The composite has a low PTC and NTC effec, which is determined by its 2-dimensional conductive network and the properties of the matrix.

Keywords:

• 2-dimensional conductive network
• Aggregate
• NTC
• PTC
• Resistivity

ACKNOWLEDGMENTS

The authors gratefully acknowledge the financial support of this work by Ying Tung Fok Education Foundation (Grant no. 101045), Nature Science Foundation of China (Contract Number: 50573049) and Specialized Research Fund for the Doctoral Program of Higher Education (Contract No. 20060610026).