| Titre : |
Less yellowing in UV coat : Novel light stabilisers evaluated in water-borne UV-curable coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Yung-Chi Yang, Auteur ; Ming-hua Lai, Auteur ; Yu-Shu Sung, Auteur ; Yin-Ting Lai, Auteur ; Chung-Han Lu, Auteur ; Hsiao-Fang Chiu, Auteur ; Chih-Hsien Chein, Auteur ; Steven Lee, Auteur ; Yao-Hsing Huang, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 136-140 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Essais (technologie)
Photostabilité
Polyuréthanes
Rayonnement ultraviolet A
Résistance au jaunissement
Revêtements -- Effets du rayonnement ultraviolet:Peinture -- Effets du rayonnement ultraviolet
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water-borne UV-curable coatings may discolour during curing or on exposure to natural UV light. A novel light stabiliser (NLS) was developed specifically for water-borne UV curable coatings. Tests showed that the NLS gave effective protection, but with far less efect on cure speed than either UVA or HALS. |
| Note de contenu : |
- Basis of the test procedures
- HALS can retard curing more than UV absorber
- NLS has little effect on cure speed
- Dispersion test shows stability of NLS
- Calculating the optimal results
- Individual effects summarises
- The optimal prediction profiler
- Yellowing reduction obtained at full cured speed
- FIGURES : 1. Effect of reducing yellowing by LS and DFT during curing process test (prediction profiler) - 2. The response surface methodology plot for reducing yellowing by NLS and DFT during the curing process - 3. Photo of 3% NLS in UV-curable water-borne polyurethane coating at a film thickness of 20 µm after curing
- TABLES : 1. Compositions of water-borne UV model formulations. All components formulated to be suitable for water-based systems - 2. Details ofscreening design and test results - 3. Effect of curing energy with water-borne UVA, HALS and NLS in water-borne UV curable model formulation (where ? = degree of effect, ? = degree of fredom , SS = sum of squares and MS = mean squar) |
| En ligne : |
https://drive.google.com/file/d/1szzkATCWCN6Dqrvc0vXnNwR476Q8u21e/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28278 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2017) . - p. 136-140
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