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Journal of Coatings Technology and Research
Erschienen in: Journal of Coatings Technology and Research 4/2007

01.12.2007

Kinetic studies of a UV-curable powder coating using photo-DSC, real-time FTIR and rheology

verfasst von: P. Castell, M. Wouters, H. Fischer, G. de With

Erschienen in: Journal of Coatings Technology and Research | Ausgabe 4/2007

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Abstract

The curing kinetics of UV-curable powder coatings based on commercial unsaturated polyesters were monitored using photo-DSC, Real-Time FTIR-ATR and a modified rheometer equipped with a UV source. The effect of physical and chemical factors on curing such as type of photoinitiator, photoinitiator concentration, temperature and atmosphere of curing were evaluated. Coatings containing amounts of photoinitiator from 0.5 to 10 wt% were cured at different temperatures in less than 10 s reaching conversions approximately of 60%. The increase of the temperature of curing reduces the final conversion and also the rate of polymerization due to the chain transfer process and depolymerization that dominates the photopolymerization at high temperatures. The reactivity of the photoinitiators was similar for all the studied photoinitiators apart from benzophenone that was found to be the slowest initiator.
Vorheriger Artikel New approaches in wood coating stabilization
Nächster Artikel Investigation of the properties of UV-curing acrylate-terminated unsaturated polyester coatings by utilizing an experimental design methodology

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Metadaten
Titel
Kinetic studies of a UV-curable powder coating using photo-DSC, real-time FTIR and rheology
verfasst von
P. Castell
M. Wouters
H. Fischer
G. de With
Publikationsdatum
01.12.2007
Verlag
Springer US
Erschienen in
Journal of Coatings Technology and Research / Ausgabe 4/2007
Print ISSN: 1547-0091
Elektronische ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-007-9056-6

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