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Electrical conductivity of vapor-grown carbon fiber/thermoplastic composites

Published online by Cambridge University Press:  31 January 2011

Ioana C. Finegan  and
Gary G. Tibbetts
Ioana C. Finegan
Affiliation:
Materials and Processes Laboratory, General Motors R&D Center, 30500 Mound Road, Warren, Michigan 48090-9055
Gary G. Tibbetts
Affiliation:
Materials and Processes Laboratory, General Motors R&D Center, 30500 Mound Road, Warren, Michigan 48090-9055
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Abstract

Conducting polymers are required for applications such as radio frequency interference shielding, primerless electrostatic painting, and static discharge. We have used vapor-grown carbon fiber (VGCF) as an additive to investigate conducting thermoplastics for these applications. The electrical properties of VGCF/polypropylene (PP) and VGCF/nylon composites are very attractive compared with those provided by other conventional conducting additives. Because of the low diameter of the VGCF used, the onset of conductivity (percolation threshold) can be below 3 vol%. Because of the highly conductive nature of the fibers, particularly after a graphitization step, the composites can reach resistivities as low as 0.15 Ω cm.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 6 , June 2001 , pp. 1668 - 1674
Copyright
Copyright © Materials Research Society 2001

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