| Titre : |
Novel light stabilisers for waterborne alkyd coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Yung-Chi Yang, Auteur ; Yu-Shu Sung, Auteur ; Yin-Ting Lai, Auteur ; Chung-Han Lu, Auteur ; Hsiao-Fang Chiu, Auteur ; Chih-Hsien Chein, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 20-24 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbeurs de rayonnement ultraviolet
Etudes comparatives
Photostabilité
Plan d'expérience
Polyalkydes
Résistance au rayonnement ultraviolet
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Stabilisants (chimie)
|
| Index. décimale : |
667.6 Peintures |
| Résumé : |
Alkyds resins are used frequently in industrial coatings. Despite the advantages of these properties there is one major drawback with using alkyd resins. Degradation may occur over a relatively short period of time when alkyds are exposed to ultraviolet (UV) light radiation from natural sunlight. The clear coat containing UV absorbers and light stabilisers (N-OR HALS) is commonly applied to the surface for protection.
Waterborne alkyds coatings - the green coatings - have been developed to replace conventional alkyd coatings with VOC emissions. It could be a challenge when light stabilisers are required to protect coatings to UV degradation.
This paper is a comparison study of two different waterborne light stabilisers, which are N-R and N-OR HALS, mixed with waterborne alkyd coating. N-R HALS is basic and N-OR HALS is suitable to use in waterborne acidic alkyd coating. Design of Experiment (DOE) was used in this study. Eversorb AQ6 is a waterborne UV absorber and Eversorb AS5 is N-OR HALS that was investigated in this model. The results confirmed that by increasing the concentration of Eversorb AQ5 and Eversorb AQ6 in the top coat, it can effectively protect from UV light degradation. Furthermore, data also showed that by increasing the coating thickness, the weatherability of coating can also be improved to some degree. |
| En ligne : |
https://drive.google.com/file/d/16k2Vu41mTXXfOnJSV_qNFjWPuAuEZz4Q/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21506 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4596 (05/2014) . - p. 20-24
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Novel light stabilisers for waterborne alkyd coatings in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4596 (05/2014)
