| Titre : |
Iron as an alternative drier for curing of high-solid alkyd coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Barbara Pirš, Auteur ; Bogdan Znoj, Auteur ; Saša Skale, Auteur ; Jožefa Zabret, Auteur ; Jerneja Godnjavec, Auteur ; Peter Venturini, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 965-974 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Fer
Fourier, Spectroscopie infrarouge à transformée de
Polyalkydes
Revêtements:Peinture
Rhéologie
SiccatifsUn siccatif est une substance qui joue un rôle de catalyseur en accélérant le séchage ou durcissement (polymérisation) d'un matériau tel une huile ou une peinture à base d'huile (pour le bâtiment ou les artistes).
Spectroscopie d'impédance électrochimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Alkyds are widely used polymers in the coating industry for decorative and industrial applications due to their low price, performance, diversity, and containment of renewable constituents. They have been of particular interest in research over the past decade owing to new legislative requirements focused on the reduction of volatile organic coatings (VOC) and the replacement of Cobalt (Co) driers. In the present work, the commercially accessible Fe (bispidon) drier and the Co (bis (2-ethylhexanoate)) drier were studied in high-solid (HS) alkyd coatings that are consistent with allowed VOC values as stipulated by actual EU legislation. Curing kinetic properties of the alkyd oxidation process were analyzed using FTIR spectroscopy. The influence of Fe and Co driers on crosslinking was further evaluated in terms of viscoelastic properties and surface hardness measurements. Finally, cured coating films were compared with the EIS method in order to determine the influence of driers on crosslinked polymer structures and pore resistance of HS alkyd coatings. We compared Fe and Co driers in HS long-oil alkyd coatings. Coatings with Fe drier showed comparable Final Drying Times but dissimilar crosslinking kinetic activity compared with the Co drier. Fe drier enable more uniformity through the entire thickness of the HS alkyd coating and consequently has lower diffusion of ions through the film. |
| Note de contenu : |
- EXPERIMENTAL : Materials and sample preparation - analytical methods
- RESULTS AND DISCUSSION : Film formation characteristics - Chemical curing during film formation process - Physical properties of coating film - Electrochemical characteristics of cured coating film |
| DOI : |
10.1007/s11998-015-9724-x |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9724-x.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24930 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 6 (11/2015) . - p. 965-974
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