| 摘要 |
PURPOSE: To provide a paper feeding rubber member having both characteristics of silicon rubber and polyurethane rubber by making silicone rubber and polyurethane rubber naturally having no compatibility into an uniform composite. CONSTITUTION: This paper feeding rubber member is obtained by co-curing a heat curing type silicone rubber hardened by peroxide and a polyurethane rubber hardened by peroxide by use of a compatible agent consisting of a multi- block copolymer obtained by chain-extending a polyorganosiloxane having hydroxyl groups on both terminals and a polyester or polyether having hydroxyl groups on both terminals by a diisocyanate containing 4,4-diphenylmethane diisocyanate (MDI). |
