| 摘要 |
<p>PURPOSE:The titled coating material, consisting of electrically conductive powder which is partially chromium dioxide and a synthetic resin, having improved moisture and heat resistance characteristics without increasing resistance values due to anodic oxidation even on electricity conduction in a high-humidity atmosphere and causing low sliding noises on using as a sliding contact. CONSTITUTION:A coating material consisting of (A) electrically conductive powder containing partially powder 4 which is chromium dioxide (CrO2) and preferably carbon black 3 as the rest and (B) a synthetic resin 5, e.g. epoxy resin. The weight ratio of the CrO2 powder 4 to the carbon black 3 is preferably 95:5-10:90. USE:Printed circuit boards for various electrical apparatuses, resistance elements in fixed resistors, etc., and electromagnetic wave shielding plates.</p> |
