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Efficient curing of high performance coatings using high peak irradiance UV light / D. Skinner in SURFACE COATINGS INTERNATIONAL, Vol. 80, N° 6 (06/1997)
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Titre : Efficient curing of high performance coatings using high peak irradiance UV light Type de document : texte imprimé Auteurs : D. Skinner, Auteur Année de publication : 1997 Article en page(s) : p. 274-278 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Matériau revêtement' Peinture Durcissement 'Rayonnement UV' 'Intensité élevée' Performance Photoamorceur Index. décimale : 667.9 Revêtements et enduits Résumé : Des systèmes durcissables par UV continuent leur pénétration de nouveaux marchés et à obtenir des succès sur une gamme croissante et variée d'applications. Celles-ci présentent des défis à l'usager, le formulateur et le fournisseur de matériel UV en répondant aux demandes de plus en plus élevées à l'égard des performances de cuisson et de l'efficacité. Au cours des années passées beaucoup d'efforts ont été consacrés à l'amélioration de nouveaux produits en vue de parvenir à un meilleur rendement. Pourtant, il y a un bon nombre de facteurs autres que la formulation elle-même qui peuvent exercer une influence sur l'efficacité du processus de cuisson par les rayons UV. Note de contenu : - EXPERIMENTAL : UV curing equipment - Formulation - Procedure
- RESULTS AND DISCUSSIONS : Effect of photoinitiator type on MEK resistance - Effect of photoinitiator level on MEK resistance - Effect on UV intensity on MEK resistance - Effect of UV intensity on hardness - Further benefits of high intensity UV using an excimer lamp systemPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17179
in SURFACE COATINGS INTERNATIONAL > Vol. 80, N° 6 (06/1997) . - p. 274-278[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006583 - Périodique Bibliothèque principale Documentaires Disponible New high- throughput screening tool for the evaluation of pigmented UV-A curable coatings- : A case study using low energy lamps / Stephanie Strazisar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 4 (10/2006)
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Titre : New high- throughput screening tool for the evaluation of pigmented UV-A curable coatings- : A case study using low energy lamps Type de document : texte imprimé Auteurs : Stephanie Strazisar, Auteur ; Margaret Kendi, Auteur ; Thomas Fäcke, Auteur ; Leoné Hermans-Blackburn, Auteur ; Xudong Sharon Feng, Auteur Année de publication : 2006 Article en page(s) : p. 307-312 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Marquage fluorescent' 'Criblage haut débit' Photoamorceur Cinétique Copolymérisation Photochimie 'Copolymère uréthane acrylate' Index. décimale : 667.9 Revêtements et enduits Résumé : Pigmented UV radiation-curable coatings have been a challenge to the coatings formulator for a long time. A critical match of pigment and photoinitiator package is crucial for good cure. Another issue facing the coatings chemist is the popularity of low energy lamps, which offer ease of handling, reduced safety concerns, and a low price tag. Obviously, the combination of curing pigmented coatings and using low energy lamps poses a special challenge. To improve the pigmented coating development cycle, a rapid workflow was needed to screen formulations for cure under low energy UV-A radiation. For these types of applications, a high-throughput screening assay for discovering desirable photoinitiator packages was developed. Fluorescent dye-doped coatings cured under UV-A radiation were extracted with solvent. The relative degree-of-cure of the film was determined to be inversely related to a combination of the absorbance and fluorescence of the extractant. When this assay is used in conjunction with automated liquid handling and a spectrophotometer with an x-y scanning stage, the coatings formulator can analyze a large variable set in a short period of time. A primary screening of photoinitiators using this workflow suggests Lucirin® TPO-L, Darocur® 4265, and Irgacure® 2100 as optimum choices. DOI : 10.1007/s11998-006-0024-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-006-0027-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3684
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 4 (10/2006) . - p. 307-312[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 005756 - Périodique Bibliothèque principale Documentaires Disponible Photoinitiators and photosensitizers of polymerization : A short review / Jean-Pierre Fouassier in EUROPEAN COATINGS JOURNAL (ECJ), N° 6/96 (06/1996)
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Titre : Photoinitiators and photosensitizers of polymerization : A short review Type de document : texte imprimé Auteurs : Jean-Pierre Fouassier, Auteur Année de publication : 1996 Article en page(s) : p. 412-419 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Amorceur radicalaire' cationique' anionique' 'Relation structure activité' 'Activité amorceur' 'Polymérisation photochimique' Photoamorceur Index. décimale : 667.9 Revêtements et enduits Résumé : The UV curing of coatings offers various economic advantages over orthodox technologies. It is the photoinitiator that has been found to represent a key factor in the efficiency of this type of reaction. The following article provides an overview of different chemistries and an approach to the photochemical reactivity of these molecules. Note de contenu : - The basic photo-chemical process in light-induced reaction
- The radical photopolymerization reactions
- Main classes of radical photoinitiators sensitive in the UV wavelenght range : 1) Basic photoinitiators - 2) Photoinitiators exhibing particular properties - 3) Synergistic effects - 4) Visible photoinitiators
- Cationic photoinitiators
- Anionic photoinitiators
- Charge transfer initiation
- Laser induced polymerization
- Structure/reactivity relationshipsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11296
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6/96 (06/1996) . - p. 412-419[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002516 - Périodique Bibliothèque principale Documentaires Disponible UV curing of aqueous polyurethane acrylate dispersions. A comparative study by real-time FTIR spectroscopy and pilot scale curing / Armin Tauber in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 911 (12/2000)
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Titre : UV curing of aqueous polyurethane acrylate dispersions. A comparative study by real-time FTIR spectroscopy and pilot scale curing Type de document : texte imprimé Auteurs : Armin Tauber, Auteur ; Tom Scherzer, Auteur ; Reiner Mehnert, Auteur Année de publication : 2000 Article en page(s) : p. 51-60 Note générale : Bibliogr. Langues : Américain (ame) Tags : Revêtement Peinture eau Durcissement Rayonnement UV Dispersion aqueuse Uréthanne polymère Acrylate Spectrométrie IR Transformation Fourier Temps réel Echelle pilote Etude comparative Photoamorceur expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Real-time FTIR spectroscopy was used to study the chemical and physical factors, e.g., photoinitiator and temperature, affecting the UV curing of dried films from aqueous polyurethane acrylate dispersions. Poor conversion of the acrylate double bonds (67%) observed at room temperature can be overcome by irradiation at elevated temperatures. At 353 K almost complete conversion is observed, even with reduced photoinitiator content. Single or multiple UV-light flash experiments were performed to simulate technical parameters, e.g., cure speed and number of required UV lamps, with the help of RTIR spectroscopy. The results obtained were confirmed by pilot-scale UV curing experiments: one or, at most, two UV lamps of high intensity are sufficient for the curing process with respect to the double-bond conversion. The coatings based on the polyurethane acrylate dispersion show low sensitivity towards oxygen from air. Moreover, in comparison to UV curing under inert nitrogen atmosphere, a small positive effect on the conversion in the presence of air has been observed, which might be due to the contribution of peroxyl radicals or their decomposition products to curing. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5586
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 911 (12/2000) . - p. 51-60[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001219 - Périodique Bibliothèque principale Documentaires Disponible 001218 - Périodique Bibliothèque principale Documentaires Disponible UV radiation curing of surface coatings based on ENR-cycloaliphatic diepoxide-glycidyl methacrylate system by cationic photoinitiators-optimization of process variables through response surface methodology / R. N. Kumar in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 896 (09/1999)
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Titre : UV radiation curing of surface coatings based on ENR-cycloaliphatic diepoxide-glycidyl methacrylate system by cationic photoinitiators-optimization of process variables through response surface methodology Type de document : texte imprimé Auteurs : R. N. Kumar, Auteur ; Woo Choon Kong, Auteur ; Abusamah Abubakar, Auteur Année de publication : 1999 Article en page(s) : p. 79-88 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériau revêtement' Peinture Durcissement 'Rayonnement UV' 'Caoutchouc naturel époxydé' Diépoxyde 'Epoxyde résine' 'Méthacrylate de glycidyle copolymère' Photoamorceur 'Propriété mécanique' Feuil 'Etude expérimentale' 'Surface réponse' Index. décimale : 667.9 Revêtements et enduits Résumé : This paper reports on the results of the ultraviolet curing of surface coatings based on cycloaliphatic diepoxide-epoxidized natural rubber (ENR)-glycidyl methacrylate (GMA) system with a cationic photoinitiator. The results reported in our earlier publication showed that ENR acts as a toughening agent for the otherwise brittle epoxy resin, and that GMA functions as a crosslinking agent in the system and promotes adhesion between the elastomeric domain and the resin matrix. In this paper, the results of the effect of operating variables on the properties of the cured film are reported. Response surface methodology (RSM) was employed to collect data and to establish the functional relationships between operating variables and performance characteristics of the cured coatings. The data are represented in three-dimensional response surface plots. These plots not only enable the interpretation of results, but also allow the determination of the optimum treatment combinations required to maximize the properties of the surface coatings. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17942
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Code-barres Cote Support Localisation Section Disponibilité 003564 - Périodique Bibliothèque principale Documentaires Disponible UV-radiation curing of waterborne acrylate coatings / C. Decker in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 4 (10/2004)
PermalinkA comparative kinetic study of commercial photoinitiators for UV/visible curable acrylate clear coatings / N. S. Allen in SURFACE COATINGS INTERNATIONAL, Vol. 82, N° 2 (02/1999)
PermalinkFurther studies on the tuned photoinitiators / R. Nagarajan in SURFACE COATINGS INTERNATIONAL, Vol. 82, N° 7 (07/1999)
PermalinkHybrid inorganic-organic UV-curable abrasion-resistant coatings / M. Misra in SURFACE COATINGS INTERNATIONAL, Vol. 81, N° 12 (12/1998)
PermalinkA review on UV curable coatings / K. Sudarsan in PAINTINDIA, Vol. LI, N° 9 (09/2001)
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