UV curing

The UV curing of a photo-initiated epoxy resin adhesive by cationic polymerization is also affected by the set temperature.

At a constant exposure time of 60s, the higher temperature of 70°C (red curves for DSC and temperature) causes higher reactivity of the resin system (faster curing) as well as a higher heat of reaction (390 J/g). It is particularly important to be familiar with this property when dealing with dual-curing resin systems, both thermal and light-curing. (measurement with Photo-DSC 204 F1 Phoenix®®)