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Incorporating Nanosilica Technology of Different Particle Size for New Improvements in UV-Curable Coatings
The blending of mineral fillers with organic polymeric materials typically provides highly improved mechanical and physical properties of the cured polymer. Unfortunately, the use of conventional mineral filling materials (e.g. quartz flour or fumed silica) is usually accompanied by cost- and energy-intensive dispersion technologies. These conventi
Photopolymerization of acrylate monomer miniemulsions: from fundamentals to implementation in photoreactors
Over the last 40 years, miniemulsion polymerization has resulted in the generation of many polymer colloidal structures, currently unattainable by other heterophase processes. One of its salient features is the virtual lack of monomer transport across the aqueous phase. As a result, the nucleation takes place preferentially in monomer droplets, whi
Photocurable polythiol based (meth)acrylate resins stabilization: New powerful stabilizers and stabilization systems
Radical photopolymerized (meth)acrylate systems provide rapid cure on demand which is a particular processing advantage of thermosets. However (meth)acrylates are generally known to shrink when cured by UV light and to provide photocured materials with limited thermo-mechanical properties balance due partly to their relatively low functional group
The Effect of UV Stabilizers Under UV and Daylight Curing: Characterization by RT FTIR and Confocal Raman Spectroscopy
The organic coatings used for outdoor applications, should be protected against the harmful solar radiation to overcome the photodegradation resulting in changes in optical and mechanical properties of the coating. The photostabilization can be improved by adding UV stabilizers to the photo-curable formulation: UV absorbers and Hindered Amin Light
Traditional medium pressure mercury lamps produce a wide spectrum of radiation,including significant emissions in the ultra violet region, specifically UVC, UVB, UVA andUVV. This spectral breadth allows for the selection of photoinitiator(s) to optimize thecure of acrylate-based inks, coatings, adhesives, sealants and composites according tothe typ
Photoinitiating systems for use with LED and LASER diodes in the visible
As the number of applications of visible light-induced photopolymerizable materials increases, the need of development of efficient PIS for the visible becomes more and more evident. Some of the applications of this technology are dental materials, laser imaging, and holography [1-4].LED sources are commercially available in a wide variety of wavel
Sensitizer-Photoinitiator Interactions: Possibilities and Probabilities for UV Inks and Coatings.
industry, this energy transfer effect was first put to good use in the 1980’s when it was found that small additions of 2-isopropylthioxanthone (ITX) could increase the cure speed of theaminoalkylacetophenone photoinitiators such as 2-methyl-4’-(methylthio)-2-morpholinopropiophenone (MMMP) by a considerable degree 1, 2. Since then, these
A blocking primer design for digital printing on packaging foils
The advent of digital inkjet printing techniques about 30 years ago, announced a new era at first in small scale office and home printing, further has emerged in industrial scale printing in a large variety of wide and super wide format applications and is now being rolled out in even more exciting applications ranging from high speed document prin