PREPARATION OF ULTRAFINE COPPER POWDER FOR NOVOLAC-BONDED CONDUCTING COMPOSITES

摘要

The effects of small additions of organic acids on the reduction of CuSO_4 5H_2O with glycerol and the conductivity of the composites fabricated from the resultant copper powder and novolac are investigated. By optimizing the conditions for preparing ultrafine copper powder and the contents of copper powder and stabilizers in the composite, materials are obtained with a resistivity on the order of 10~-4 　Ω cm, which remains nearly constant for a long time.