How can epoxy be cured using UV light?

Epoxy can be cured using UV light by adding a photoinitiator to the epoxy resin, which reacts to the UV light and initiates the curing process. When exposed to UV light, the photoinitiator generates free radicals that trigger the polymerization of the epoxy resin, causing it to harden and cure quickly. UV curing is a fast and efficient method for curing epoxy, as it does not require heat and can be completed in a matter of seconds to minutes.