Question

The role of zinc stearate in the process of vulcanisation is:

• A. to accelerate the process
• B. to slow down the process
• C. to stop the process
• D. to initiate the process

Answer 1

The correct option is A to accelerate the process

• In sulphur vulcanization of natural rubber excess zinc stearate enhances the yield of crosslinks, reduces their average length, and inhibits their destruction.
  
• It is an "activator" for accelerated rubber sulfur vulcanization.