USING LASER ETCHING TO IMPROVE SURFACE CONTACT RESISTANCE OF CONDUCTIVE FIBER FILLER POLYMER COMPOSITES

摘要

A method for improving the line or point-to-point surface contact resistance of an electrically conductive fiber filled polymer composite (10) includes the laser evaporating of a thin polymer layer from the surface (12) of the composite and exposing of the electrically conductive fiber/particle network (14) underneath. The surface of the composite laser is etched to a depth between about 1 to about 250 microns (about 0.001 mm to about 0.250 mm).