Knowledge base

             Composite materials have now become commonplace and are increasingly used in industrial applications, where they offer the advantage of low weight associated high strength, stiffness and durability. Notableexamples include sandwich structures, laminates, reinforced polyme

The mercury high pressure gas discharge lamp is the UV source which is mostly used for curing. It is a very efficient lamp to produce intense UV-C (200 - 280 nm) radiation. However, there are more and more applications as for instance strongly pigmented lacquers or thicker anti-corrosion layers where the optical paths to the photoinitiators get lon

Photoinitiators are the key components in numerous applications using light-induced curing. Indeed, the photoinitiator is responsible for the light absorption and the production of free radicals which initiate the polymerization process (Scheme 1).However, free radicals can not only be produced by direct irradiation of the photoinitiator (A-B): but

Most from the reason of reduction of solvents in paints and coatings, the curing of liquid coatings byusing UV-radiation becomes more and more popular. In the beginning of this technology more than 20 years ago, the usage of UV-acrylates was more or less limited to transparent coatings. With thedevelopment of a new class of photoinitiators by BASE

The joke used to be that North American powder manufacturers couldn't even spell UV.Today that just isn't the case any more. At least a dozen powder manufacturers havebeen to our laboratory to run parts at one time or another. At least half of these suppliershave developed commercial UV powder products.

The sensitized decomposition of two different 0-acyloximes has been examined according to i) energytransfer or / and ii) electron transfer processes. The determination of the different triplet energy levels allows todiscuss the mechanisms of decomposition.

In this paper different design technologies of electronic ballasts and their system as well as lamprelated characteristics are presented. The profitable appliance of medium pressure mercury discharge lamps in UV curing is basically linked to the quality of thermal and electrical lamp operating conditions. Especially the highly loaded and doped disc

UV-curing has found over the past years increasing number of industrial applications and will find even more areas of applications in the years to come. The major reasons for that are its unique benefits, e.g. solvent free formulations, high cure speed and low temperature processing. In addition to these benefits two additional properties of UV-cur