ELECTRICALLY CONDUCTIVE RESIN PASTE

摘要

PURPOSE:To produce the titled paste in an advantageous manner in cost as compared with conventional methods, which causes neither deterioration nor variability in electrical characteristics when used in the molding of electrodes for electronic parts or printed wiring, by blending an electrical conductivity- imparting material with a thermosetting resin. CONSTITUTION:An electrical conductive metallic powder having a 0.01-2mu thick surface layer covered with a member selected from among Pd, Ru and their alloys (e.g. Pd-Ni or Ru-Ni) is used as an electrical conductivity-imparting material. Pref. 60-90wt% said material is blended with 10-40wt% thermosetting resin such as epoxy or polyimide resin. Cu powder is particularly preferred as said electrically conductive metallic powder to be coated with Pd or Ru from the viewpoints of electrical conductivity and cost. The surface of a base metal such as Cu is covered with Pd, Ru or their alloy by plating or PVD method to form said surface layer.