[article]
| Titre : |
Formulating radiation cure coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
S. C. Jain, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 37-50 |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Radiation cure coatings are reactive, low-viscosity and usually solvent-free, coating compositions that can be applied to a substrate by any of the conventional application methods such as spray, roller coating, screen, litho, flexo and even gravure and then polymerised or cured by exposure to a high-energy radiation such as ultraviolet or an electron beam. A radiation cure formulation is a blend of a number of chemical components designed to meet the properties required by the curing method and the desired finished product properties. The radiation curing materials may be formulated into inks, coatings and adhesives etc. Ultra violet (UV) lights is part of the optical region of the electro-magnetic spectrum and falls between the 200 and 400 nanometer wavelength. The energy sources for UV cure are medium pressure mercury lamps, pulsed xenon lamps, electrode less vapour lamps or laser. The UV radiations are focused on the substrate by reflectors housed in the lamp. The electron source for EB curing is generally a filament that is heated inside a vacuum tube. High voltage electron beam accelerators are used to generate the electron stream for electron beam curing. Accelerated electrons are focused by an optical system. The cured films exhibit excellent hardness, mar resistance and chemical resistance. Presently ultraviolet radiation curing is the dominant curing system, the electron beam curing has a minor share of around 15% of the total radiation cure coatings market. |
| Note de contenu : |
- CURING MECHANISM
- RAW MATERIALS FOR RADIATION CURE COATINGS
- OLIGOMERS - Epoxy acrylates - Urethane acrylate - Polyester acrylates - Polyether acrylates - Amine modified polyether acrylates - Acrylic acrylates - Miscellaneous oligomers
- MONOMERS
- PHOTO INITIATORS
- ADDITIVES
- PIGMENTS
- CATION CURING
- POWDER COATINGS
- APPLICATION AREAS OF RADIATION CURE COATINGS
- ADVANTAGES AND DISADVANTAGES OF RADIATION CURE COATINGS - Advantages - Disadvantages |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12040 |
in PAINTINDIA > Vol. LIV, N° 3 (03/2004) . - p. 37-50
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Formulating radiation cure coatings in PAINTINDIA, Vol. LIV, N° 3 (03/2004)
