Electrical evaluation of conductive adhesives

Abstract

The resistivity of several metal-filled adhesives was followed over a frequency range of 1 KHz to 10 MHz. The resistivity of the cured resins increased according to the filler in the order: Ag < Cu < Ni. The resistivity of most of the materials were independent of frequency over the range investigated. The exceptions were the two least conductive materials which decreased in resistivity between 1 MHz and 10 MHz. In addition, the shear strenghts of the adhesives were measured according to ASTM Dl002 on copper surfaces.