Black&Light: New black UV adhesives from Panacol
Panacol presents its first series of new UV-curing black epoxy adhesives. These "Black&Light" adhesives, Vitralit BL UC 1101, Vitralit BL UC 1102 and Vitralit BL UC 1103, can be cured with UV light alone, even in thicker layers, eliminating the need for a second curing mechanism.
Another major advantage of these Black&Light adhesives from Panacol is that they can be shipped and stored at room temperature. Conventional one-component, black-colored epoxy adhesives must be stored and transported refrigerated or frozen. In a conventional UV adhesive, the black color absorbs a high percentage of the UV energy during curing. This means that the UV light energy required to fully polymerize an adhesive only penetrates a few microns. This phenomenon leads to the formation of a superficial "skin", while the underlying adhesive remains uncured. The new black Vitralit BL UC adhesives from Panacol can be cured purely with UV LED light up to a thickness of more than 1 mm. For curing, the UV LED curing systems from Dr. Hönle are perfectly matched to the absorption wavelengths of the Black & Light technology and ensure optimum curing of the black adhesives. The new Black & Light adhesives Vitralit BL UC 1101, Vitralit BL UC 1102 and Vitralit BL UC 1103 cover a wide range of applications. They are suitable for the encapsulation of components, for glob tops or edge bonding in electronics production. They can also be used as optical adhesives in applications that require high OD values (optical density).
Vitralit BL UC 1101, for example, is the perfect choice when a thick adhesive layer is required. It cures reliably in thick layers of up to 1.3 mm, resulting in an optical density of up to 3.9. If a high optical density with a lower layer thickness is required, Vitralit BL UC 1103 with OD values of up to 6 is the best choice. When mounting optoelectronic components, Vitralit BL UC adhesives minimize reflections and can ensure the sensitive transmission values required for sensors in the automotive sector, for example. All three new adhesives offer excellent mechanical properties such as high glass transition temperatures, low shrinkage and a low coefficient of thermal expansion. These properties ensure reliable bonding results with excellent thermal and positional stability. As the Black&Light technology is compatible with many of Panacol's Vitralit epoxy resin adhesives, customized adhesive solutions are also possible, tailored to specific curing conditions and/or mechanical properties.