Electrophoretic deposition of polyimide: Electrocoating on the cathode

Electrophoretic deposition is an important commercial method of applying polymer films to irregularly shaped metal articles, and adaptation of this method to polyimides could increase their utility significantly. Contamination of the polyimide with metal ions is a serious concern with respect to the thermal and electrical properties of the finished films. Also, the ability to obtain uniform film thicknesses over irregular surfaces is one of the key advantages of electrophoretic deposition. It was these considerations that provided the impetus for the work reported in this paper.