Panacol Introduces Two New Dual-cure Adhesives
Panacol, a leading international manufacturer of industrial adhesives, continues to expand its portfolio of dual-curing acrylic adhesive systems with the introduction of Vitralit® UD 8055 and Vitralit® UD 8056.
These adhesives principally cure with UV light. These two adhesive systems have a high glass transition range of over 100°C, which helps to preserve high-strength bonds through thermal cycling stress. They also possess a secondary moisture post-cure mechanism to compensate for shadowed areas.
Vitralit® UD 8055 and Vitralit® UD 8056 are ideal for use as encapsulants that provide environmental protection to sensors and PCB components. They can also be utilized for bonding dissimilar substrates including many plastics and metals where undercuts or geometry-related cavities are present. Their advantage of the dual cure is clearly seen in this situation. The secondary moisture cure mechanism overcomes the challenge of shadowed bond lines and ensures a reliable bonding process.
In the primary UV curing process, the bonded areas in the component are fixtured in seconds by UV light. LED curing systems can be used possessing wavelengths of 365 or 405nm. As LED systems do not require any warm-up phases, they enable the shortest cycle times.
LED and UV pioneer Dr. Hönle offers a broad selection of spot and flood-style systems that are optimally matched to Panacol's adhesives and can be individually adapted to the application requirements.
In the secondary post-curing process, uncured monomers crosslink in shadowed areas by atmospheric moisture without stress and the need for secondary thermal exposure. This technology enables fast cycle times and high-volume production without subjecting temperature-sensitive electronics or components to excessive thermal stress.
Vitralit® UD 8055 and Vitralit® UD 8056 achieve high adhesion with typical substrates such as FR4, PC and PBT. Vitralit® UD 8055 has demonstrated very reliable adhesive performance through challenging 85/85 aging tests.
Vitralit® UD 8056 is particularly impressive for its performance on LCP and has passed UL94 HB tests. With depth of cure that exceeds several millimeters, there are many applications for these two low-halogen adhesives in electronic assembly.
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