Accelerators is an organic substance, functioning in speeding up rubber vulcanization with just a small amount.
The objective and role of accelerators used in rubber recipe are of vital importance:
Reduce the temperature of vulcanization (reduce the quantity of heat needed for vulcanization)
Make vulcanized rubber have web structure with uniform distribution (increase physio- mechanical properties of the products)
However, the choice accelerators for vulcanization of rubber compound has to satisfy the following:
- Do not create self vulcanization in processing stages.
- Has big optimized vulcanization duration (vulcanization period is the time in which many functions and properties of the products are changed least).
- Has lateness activation to ensure uniform vulcanization from inner to outer of products.
- Good aging resistance and environment resistance.
- Harmless to human.