Study of UV Curing Behavior by Photo-DSC and In-situ Dielectric Analysis (DEA)
Yanxi Zhang, Application Support, Netzsch Instruments North America, LLC
Ultraviolet (UV) light curing is a technology being applied increasingly in the fields of coatings, paints, inks, adhesives, etc. The main advantage of light-curing systems is their fast reaction time. Monomer solutions, which are mostly free of solvents, can be cured within only a few seconds at low temperatures. A combination of thermal and light curing reactions is often applied to dual cure adhesives or paints.
A variety of questions may arise during the UV curing process. How long does it take for the resin to begin UV curing? How high is the reactivity? How effective is the photo initiator? When is curing complete? How can the curing cycle be optimized? Is there any potential for post-curing? The answers to these questions can be investigated by using Dielectric Analysis (DEA) and DSC with the extension of a UV light source. Various application examples are included in the presentation.