[article]
| Titre : |
A review on UV curable coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
K. Sudarsan, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 51-60 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Matériau revêtement' 'Peinture photodurcissable' Durcissement 'Rayonnement UV' 'Article synthèse' Photoamorceur Formulation Liant Adjuvant Pigment 'Mécanisme réaction' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Most of the paints in usage are solvent based. These solvents are becoming a threat to environmental harmony. Several coatings have been developed to reduce VOC emission. UV curable coating is one such boon to paint industries, which not only reduces the VOC, but also increases the productivity. After decades of continuous development, radiation curing has evolved into a mature technology. Still developments are continuing in this field to upgrade it. This article reviews the basic raw materials, reaction mechanism, source of UV light, application techniques and usage, advantages and disadvantages of UV curable coatings. |
| Note de contenu : |
- RAW MATERIALS
- PREPOLYMERS OR OLIGOMERS
- TYPES OF OLIGOMERS
- VINYL BASED OLIGOMERS : Acrylic prepolymers - Acrylated epoxies - Urethane acrylates - Formation of difunctional urethane acrylate - Polysester acrylates - Silicone acrylates - Acrylated acrylics - Water reducible prepolymers and emulsions - Advantages of using water based system -Disadvantages of using water based system
- NON VINYL BASED OLIGOMERS UNSATURED POLYESTER : Thiol/ene system - Stability of prepolymers
- MONOMERS (OR) REACTIVE DILUENTS : - Monofunctional monomers - Multifunctional monomers (MFM)
- FACTORS THE FORMULATORS SHOULD TAKE CARE WHILE SELECTING THE MONOMERS : - Diluency - Reactivity - Tensile strenght of the cured film - Surface tension - HLB (Hydrophilic Liphophilic Balance) of monomers - Shrinkage -Volatility and odour - Weatherability - Colour and stability - Difference between monofunctional and multifunctional monomers - Monofunctional monomers - Multifunctional monomers
- PIGMENTS/FILLERS
- ADDITIVES
- PHOTOINITIATORS
- REACTION MECHANISM
- SOURCES OF UV RADIATION : - Arc light - Reflector designs - Laser lght
- APPLICATION TECHNIQUES OF UV COATINGS : - Roll coater - Reverse roll coater - Direct roll coater - Curtain coater - Spray coater - Electrostatic spray - Air assisted spray
- APPLICATIONS, ADVANTAGES AND DISADVANTAGES OF UV CURING COATINGS : - Applications - Advantages - Disadvantages
- ADVANCES IN UV CURABLE COATINGS ANF FUTURE SCOPE : Powder and future scope - Electron beam curing |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12459 |
in PAINTINDIA > Vol. LI, N° 9 (09/2001) . - p. 51-60
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