Knowledge base

The ultraviolet radiation between approximately 180 nm and 400 nm and the visible light up to 480 nm is ly used today in many industrial processes for curing lacquers, inks and different coating systems. In the radiation curing equipments, different lamp systems with elliptical or parabolic reflectors with intense high or medium pressure lamps with

This paper describes the radiation cunng technology (formulations and application processes)for wood coatings in the furniture industry: 100 % solids applied by roller coating, curtain coating, spray gun, vacuum coating and water borne systems applied by spray coating. These techniques allow to get an open or closed pore aspect and a clear or pigme

UV-curable powder coatings have recently been developed which are likely to expand the marketfor powder coatings into areas traditionally dominated by other technologies, such as solventbased, and liquid uv-coatings. As uv-curable powder coatings need thermal energy only to melt the powder and enable flow to take place, much less heating is require

The amount of propylene carbonate (PC) in commercial cationic photoinitiator (P1) mixtures hasbeen associated with some applications issues including 1 and PC migration from cured . Anew experimental higher-solids P1 mixture was developed which contained less PC in an attempt to address these concerns. Some of the PC in the standard P1 was replaced

The design of modern production technologies, which are developed for high amounts of pieces in short time, requires very fast processes. At the same time the automatic processing needs reliable,  easy to use and robust components. For bonding, potting, casting and coating materials the demands can be summarised:o veryfast curingo cure only on

 With this lecture I would like to present a short survey of the essential components of a UV-unit and the technology applied in this field. The main components a UV-unit consists of apart from the electrical control are power supply units, lamps and reflectors. Depending on the design, supply and exhaust air equipment as well as a chiller are

  Various Hexaarylbiimidazoles(HABIs) were newly synthesized. The authors studied the photoinitiation efficiency of HABI and hydrogen donor(HD) photoinitiator system and found the efficiency was improved by using electron-negative HABI and electron-releasing HD. Comparing the energy between and HOMO(HD) for a studied system, it was sugges

The surface of polystyrene was modified by the introduction of CN groups. The modification was achieved by irradiating the polymer with UV light (254 nm) in the presence of gaseous cyanogen bromide (BrCN). FTIR showed that CN groups were covalently bound to the polymer surface after irradiation. Quantitative XPS analysis revealed that upon prolonge