| 摘要 |
PURPOSE:To provide a conductive foamable rubber compsn. which has good moldability and undergoes substantially no change in volume resistivity with the elapse of time. CONSTITUTION:A conductive foamable rubber compsn. comprising 100 pts.wt. rubber and, compounded therewith, 10 to 100 pts.wt. carbon black, 10 to 100 pts.wt. graphite, and a foaming agent. The compsn. is molded and vulcanized to prepare a conductive foamed rubber molding. The molding is formed on the outer periphery of a shaft to obtain a conductive rubber roll. A semiconductive non-foamable layer is formed on the outer periphery of the conductive rubber roll to obtain a composite roll. |
