"Effects of different vulcanization systems on properties of medical isoprene rubber"

From the perspective of vulcanization system, the effects of peroxide vulcanization system, sulfur vulcanization system and peroxide/sulfur complex vulcanization system on the properties of medical isoprene rubber were discussed. The results showed that the torque difference of rubbers in the peroxide/sulfur composite vulcanization system increased, the crosslinking density increased, and the physical and mechanical properties were also improved compared with those of rubbers in the sulfur vulcanization system and the peroxide vulcanization system, indicating that peroxide and sulfur had a synergistic enhancement effect on isoprene rubber. With the increase of the mass ratio of peroxide to sulfur, the elasticity of the vulcanizate increased and the compression permanent set decreased. When the mass ratio of peroxide to sulfur was 5/1, the comprehensive performance of the vulcanizate was excellent. After chemical testing, all vulcanizates with different formulas met the requirements of medical materials.