Elastic body of an addition reaction type silicone rubber elastic material used in elastic roller and fixing device

摘要

The invention is for an elastic body formed by addition reaction type silicone rubber elastic material. The material is obtained by curing a polysiloxane mixture including at least (a) straight-chain dimethyl polysiloxane having the viscosity of 8000 poise or more at a temperature of 25 DEG C. and terminated with vinyl groups; and (b) resinous organopolysiloxane having at least two vinyl groups and having the viscosity of 10-1000 poise at the temperature of 25 DEG C. and a resin segment with at least one of a 4-functional constitutional unit and a 3-functional constitutional unit, and an oil segment with a 2-functional constitutional unit. The elastic body is used in forming an elastic roller and fixing device using an elastic roller.