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Experimental Variables Effecting Chain Growth in Conductive Adhesives

Published online by Cambridge University Press:  10 February 2011

Rebecca E. Hefner  and
Mark A. Palmer
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Abstract

Chains of conductive particles within a polymer matrix can be used in place of solder joints in electronics manufacturing. Such materials can be made such that electrical conduction occurs in only one direction. Fabricating such an electrical contact requires that the conducting particles be aligned and touching, thus providing a continuous path. This can be done by applying an electric field to a mixture containing conducting particles in a polymer. Preliminary work will be presented assessing the effect of electric field strength (applied voltage), viscosity (temperature), frequency (DC and AC) on the kinetics of chain formation. A designed experiment showed only viscosity or temperature to be statistically significant. However, it is believed that voltage and frequency are factors which will effect the chain kinetics. Specifically it is proposed that there is an optimal combination of frequency and voltage for chain formation. Based on these results a more systematic study has been proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 445: Electronic Packaging Materials Science IX , 1996 , 159
Copyright
Copyright © Materials Research Society 1997

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