The way to increase the hardness of rubber
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1. Raw rubber
2. Reinforcing filler
3. Plasticizer
4. Vulcanizing agent
For the peroxide vulcanization system, increasing the amount of peroxide can increase the hardness, but it should not be too high. You can choose a variety of peroxide vulcanizing agents and use them together. In addition, adding a crosslinking assistant can significantly increase the crosslinking density of the rubber compound. For example, for DCP vulcanizing agent, TAIC, PDM (HVA-2), TAC, PL-400 (TMPTMA) can be added, and of course sulfur can also be used as auxiliary crosslinking agent.
