| Titre : |
Powder coating benefits |
| Type de document : |
texte imprimé |
| Auteurs : |
Elizabeth Reck, Auteur ; Steve Seymour, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 12-16 |
| Langues : |
Anglais (eng) |
| Catégories : |
Copolymère mélamine-formaldéhyde
Dioxyde de titane
Epoxydes
Opacité (optique)
Polyalkydes
Polyesters
Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The author explain why UV powder coatings offer many advantages not provided by other systems.
For optical performance the traditional alkyd/MF paint has an advantages over the two powder coatings systems. However from an environmental standpoint would be preferred to the solvent containing alkyd/MF paint. The epoxy/polyester coating, is from a raw material cost perspective, substantially cheaper than the UV powder coating. However, when giving consideration to the full coating process coats, the UV powder coating will be more advantageous for time (fast UV curing cycle) and energy (low melt schedule). Another major benefit is that the UV powder coating can be used with heat sensitive substrates, like plastics and wood that are distorted at the higher temperatures required for cure in thermosetting systems. |
| Note de contenu : |
- Methodology
- TiO2 pigment in UV powder coatings
- Cure and opacity
- Comparing UV powder coatings to traditional coating systems
- FIGURES : 1. Anatase and rutile TiO2 UV absorption - 2. Effect of TiO2 loading on degree of cure, opacity and formulation costs (50 micron film thickness) - Effect of crystal size on cure energy as a function of TiO2 loading (50 micron film thickness) - 4. Effect of TiO2 loading and film thickness on opacity - 5. Effect of melt schedule on cure (steel substrate, 50 micron film thickness) - 6. Opacity results for the epoxy/polyester and UV coatings and the alkyd/MF paint - 7. Formulation cost comparisons for the epoxy/polyester powder coating, the UV powder and the alkyd/MF paint
- TABLE : Effect of UV lamp type on cure of a UV powder coating (50 micron film thickness) 9.5/min band speed |
| Permalink : |
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in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4477 (06/2004) . - p. 12-16
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Powder coating benefits in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4477 (06/2004)
