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Z-Axis Anisotropic Electrically Conducting Polymer-Matrix Composite Film

Published online by Cambridge University Press:  15 February 2011

Lin Li  and
D. D. L. Chung
Lin Li
Affiliation:
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
D. D. L. Chung
Affiliation:
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
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Abstract

A z-axis anisotropic electrically conducting polymer-matrix composite film was developed. It comprised 25 vol.% copper coated polyether sulfone particles and a polyimidesiloxane matrix. Each particle protruded from both sides of the film and provided a conducting path along the z-axis. A z-axis pressure of 40 kPa resulted in a z-axis electrical resistivity of 2 ohm.cm for the overall film (i.e., 5 × 10-2 ohm.cm for a conducting path); subsequent pressure removal caused the resistivity to rise to 7 ohm.cm only. The film exhibited negligible stress relaxation and a low modulus of 1.67 GPa.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 323: Symposium J – Electronic Packaging Materials Science VII , 1993 , 21
Copyright
Copyright © Materials Research Society 1994

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