| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconducting rubber roll which can have small environmental dependence, excellent processability and a smooth surface and in which the electric resistance of the roll can be controlled by controlling the layer thickness of a resistance controlling layer. SOLUTION: The multilayered semiconducting rubber roil consists of at least three layers of from the center, (A) an axial body 14, (B) a polymer conductive layer 15 and (C) a resistance controlling layer 16. The resistance controlling layer 16 is produced by crosslinking an epichlorohydrin rubber compsn. containing (a) a rubber component essentially comprising epichlorohydrin rubber (having >=50 wt.% epichlorohydrin rubber content), (b) a low mol.wt. epichlorohydrin polymer having 0.01 to 0.5ηsp /C (by 10 to 150 pts.wt. to 100 pts.wt. of the epichlorohydrin rubber), and (c) a crosslinking agent (by 0.1 to 10 pts.wt. to 100 pts.wt. of the rubber component). |
