Using recycled rubber as the main raw material to produce rubber products can effectively reduce the cost of raw rubber; increasing the vulcanization temperature can effectively improve the vulcanization efficiency, and then improve the production efficiency. However, not all recycled rubber products can be fast vulcanized at high temperature, especially the products such as tire recycled rubber and latex recycled rubber.
When using high temperature fast vulcanization system for recycled rubber products, it is recommended to use effective vulcanization system and semi-effective vulcanization system, with three forms: using high concentration of TMTD as vulcanizing agent, using DTDM as vulcanizing agent, using high promotion low sulfur with the system.
DTDM vulcanization system generally adopts DTDM as vulcanizing agent, sub-sulfonamides or thiazoles as the main accelerator, TMTD and ZDC as auxiliary accelerators to adjust the scorching time, vulcanization rate and cross-linking degree, and its scorching time and vulcanization It has a wide range of coking time and vulcanization characteristics, easy to meet the processing requirements, and the vulcanized rubber performance is superior.