Can I use benzoyl peroxide or MEKP to cure Ceraset Polysilazane 20 or Ceraset Polyureasilazane?
As a rule, diacyl peroxides such as benzoyl peroxide are not effective in curing Ceraset Polysilazane 20 or Ceraset Polyureasilazane. The vinyl silyl group is generally “sluggish” when it comes to free radical curing. Typically, the peroxide radicals which are formed by the thermal decomposition of diacyl peroxides will deactivate by decarboxylation before they can activate the vinyl silyl groups in Ceraset Polysilazane 20 or Ceraset Polyureasilazane. MEKP can be used, but it is important to test any peroxide on a small scale under the intented cure conditions before proceeding to large-scale processing, since such radical-induced cures can be quite exothermic and create a safety hazard.
