| 摘要 |
<p>PURPOSE: To provide a paper sheet conveying rubber roller excellent in wearing resistance and with a large coefficient of initial friction, and to prevent deterioration of the coefficient of friction even when brought into contact for a long period with a fine amount of silicon oil, by coating a copolymer of ethylene octane and a mixture of organopolysiloxane and silicon graftpolyolefin on a shaft center. CONSTITUTION: A rubber material 2, composed of a copolymer of ethylene octane with a 20wt.% or more octane quantity and a mixture of organopolysiloxane and silicon graftpolyolefin, is coated on a shaft center 1. In a copolymer of ethylene octane of 20wt.% or less octane quantity, hardness and a coefficient of friction are suddenly decreased. By compounding silicon graftpolyolefin, organopolysiloxane is effectively made compatible in the mixture. When this compatible organopolysiloxane is brought into contact with silicon oil, this silicon oil is absorbed to remarkably suppress decreasing the coefficient of friction.</p> |
