Preparation method of anti-aging rubber

The invention relates to the technical field of preparation of anti-aging rubber, in particular to a preparation method of the anti-aging rubber which is high in corrosion resistance, resistant to strong acid and strong alkali and not prone to substitution reaction. The method comprises the following processing steps: S1, placing raw rubber in a plasticator, mechanically extruding and rubbing the raw rubber through the plasticator, under the action of mechanical extrusion and friction force, degrading and shortening long-chain rubber molecules, and converting a high-elasticity state into a plastic state; S2, putting the plasticated raw rubber obtained in the step 1 and other compounding agents into a rubber mixing mill for mechanical mixing, and performing mixing to obtain a rubber material, namely mixed rubber; S3, filling the rubber compound into a vulcanizing tank, then introducing a vulcanizing agent, performing heating at 160-200 DEG C, and carrying out heat preservation, so linear molecules of the raw r