| 摘要 |
The present invention provides an electrically conductive rubber composition which contains versatile materials and can be used for producing a roller body having a greater foam cell diameter than the prior-art roller bodies by crosslinking and foaming the composition in a continuous crosslinking apparatus including a microwave crosslinking device and a hot air crosslinking device, and a transfer roller including a roller body formed from the electrically conductive rubber composition. The electrically conductive rubber composition comprises a rubber component at least including an SBR, an EPDM and an epichlorohydrin rubber, a crosslinking agent component for crosslinking the rubber component, and a foaming agent component. The foaming agent component comprises a foaming agent alone in a proportion of not less than 0.1 part by mass and not greater than 8 parts by mass based on 100 parts by mass of the rubber component. Alternatively, the foaming agent component comprises the aforementioned proportion of the foaming agent and not greater than 5 parts by mass of a urea foaming assisting agent based on 100 parts by mass of the rubber component. An inventive transfer roller (1) includes a tubular roller body (2) formed from the electrically conductive rubber composition. |
