New LED-Curing Epoxies from Techsil
1 min read
LED curing used to be a solution that was limited to acrylates. Thanks to the development of new photoinitiators, Techsil is now able to offer new adhesive materials from Panacol that are based on highly resilient epoxy resins. They can be fully cured within seconds with many of today's UV-LED light curing systems.
The new generation of LED curing technology can achieve high intensities of UV light. The combination of this new LED curing technology and Panacol's new epoxies results in cure times that are comparable to those using high intensity, broad spectrum UV light sources. The higher the intensity of UV light, the faster the epoxies will cure.
The advantages of epoxies in comparison to acrylates are numerous: They are more resistant to environmental stresses, and can better withstand the effects of wide temperature excursions and moisture. They feature higher glass transition temperatures, and possess lower shrinkage upon cure. Panacol's LED-curable epoxies have dry and tack-free surfaces, making them excellent candidates for use as conformal coatings in Printed Circuit Board assembly.
These newly developed LED epoxies are part of the Vitralit®- adhesive series. Vitralit® 1728 HTG cures within two seconds when irradiated with an intensity of 1500 mW/cm2. Vitralit® 6648 achieves the same curing time with an intensity of 4780 mW/cm2. In addition to conformal coating PCBs, the adhesives can be used to attach electronic components on boards, and as surface coatings for scratch-resistance.
