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Accelerated weathering of oligomers by UV-B / Inwhan Oh in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4666 (12/2020)
[article]
Titre : Accelerated weathering of oligomers by UV-B Type de document : texte imprimé Auteurs : Inwhan Oh, Auteur ; Hak-Yul Kim, Auteur ; Sungseo Cho, Auteur ; Indrajit Bhattacharya, Auteur Année de publication : 2020 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Copolymère uréthane acrylate
Essais de résilience
Oligomères
Photoréticulation
Polymères -- Effet du rayonnement ultraviolet
Polymères -- Détérioration
Polymères aliphatiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Ultra Violet (UV) energy curing is one of the fastest crosslinking techniques used to dry coatings. UV curable coatings are also one of the most environmentally friendly coating systems as they are typically solvent-free (extremely low VOC/HAPS). Oligomers being almost 100% solids (ppm level solvent residues) have low to medium average molecular weights. Hence, they are liquid at room temperatures. Some oligomers contain some monomers to help reduce their viscosity, to make it easy for the formulator to handle them. However, some industry players do not believe UV curing is really a good solution for outdoor durable coatings. Hence, Miwon Specialty Chemical Co Ltd (MSC) decided to study the performance of some its aliphatic urethane acrylates under accelerated conditions to determine their durability. This paper discusses the tests and the performance that can be achieved when certain well-designed oligomers are exposed to harsh conditions. Note de contenu : - UV curing
- Weathering test equipment
- Preparing the test
- Exposure test and results
- Table 1 : Description of oligomers
- Table 2 : Results using ASTM G154 cycle B test for the five products
- Table 3 : Measurements taken after 1500hr and 2000hr
- Table 4 : Results after testing to ASTM G154 at 1000hr
- Table 5 : Results after testing to ASTM G154 at 2000hrEn ligne : https://drive.google.com/file/d/15yJ7l-CBWLmw0F4QT0uzIQzdG-z6gbGO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36740
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 210, N° 4666 (12/2020) . - p. 18-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23119 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Accelerated weathering of oligomers by UV-B Type de document : texte imprimé Auteurs : Inwhan Oh, Auteur ; Hak-Yul Kim, Auteur ; Indrajit Bhattacharya, Auteur ; Sungseo Cho, Auteur Année de publication : 2021 Article en page(s) : p. 72-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère uréthane acrylate
Essais accélérés (technologie)
Oligomères
Photoréticulation
Polymères -- Effet du rayonnement ultraviolet
Polymères -- Détérioration
Polymères aliphatiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Ultra Violet (UV) energy curing is one of the fastest crosslinking techniques used to dry coatings. UV curable coatings are also one of the most environmentally friendly coating systems as they are typically solvent-free (extremely low VOCIHAPS). Oligomers being almost 100 % solids (ppm level solvent residues) have low to medium average molecular weights. Hence, they are liquid at room temperatures. Some Oligomers contain some monomers, to help reduce their viscosity, to make the formulators job easy to handle them.
However, some industry players do flot believe UV curing is really a good solution for Outdoor durable coatings. Hence Miwon Specialty Chemical Co. Ltd. (MSC) decided to study the performance of some its Aliphatic Urethane acrylates under accelerated conditions to determine their durability. The paper discusses the tests and the performance that can be achieved when certain well-designed Oligomers are exposed to harsh conditions.Note de contenu : - UV curing
- Wheathering test equipment
- Preparing the test
- Exposure test and resultsEn ligne : https://drive.google.com/file/d/1d1nS47mEYceJ5_92Uu40Fc1W6Jo9VmH-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36881
in PAINTINDIA > Vol. LXXI, N° 10 (10/2021) . - p. 72-80[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23037 - Périodique Bibliothèque principale Documentaires Disponible Formulating to good effect / Philippe de Groote in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2011 (04/2011)
[article]
Titre : Formulating to good effect : Designing UV curable coatings for metallic, mirror and haptic finishes Type de document : texte imprimé Auteurs : Philippe de Groote, Auteur ; Gaia Franzolin, Auteur ; Wendy Yu, Auteur ; Indrajit Bhattacharya, Auteur ; Xavier Deruyttere, Auteur Année de publication : 2011 Article en page(s) : p. 134-137 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique)
Matières plastiques
Oligomères
Polymères en émulsion
Polyuréthanes
Réticulation (polymérisation)
Revêtements:Peinture
ToucherIndex. décimale : 667.9 Revêtements et enduits Résumé : Some newly developed resins which lend themselves to the formulation of UV-cured effect coatings for plastic substrates are described. These include UV-PUD dispersions which readily gives a smooth 'mirror finish'. An oligomer may be used to obtain tactile finishes ranging from silky/peach to tacky/rubber-like. En ligne : https://drive.google.com/file/d/1KwAViZZ86v5R_3cjHfwEjrHrB7apfWTH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11172
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/2011 (04/2011) . - p. 134-137[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012920 - Périodique Bibliothèque principale Documentaires Disponible Scratch resistance of UV coatings : influence of chemistry / Stefan Smeets in PAINTINDIA, Vol. LIV, N° 4 (04/2004)
[article]
Titre : Scratch resistance of UV coatings : influence of chemistry Type de document : texte imprimé Auteurs : Stefan Smeets, Auteur ; Indrajit Bhattacharya, Auteur ; Tania Lermytte, Auteur Année de publication : 2004 Article en page(s) : p. 85-94 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Organic coatings are very susceptible towards contact with hard objects, i.e. they are subject to maring and scratching. Scratched surfaces are not only less decorative and because of that have less value, but their protective effect is reduced too. Scractches are wek points where the system is open to attack. Corrosion can begin there, or if the substrate is deformed the coating will tear or even release from the substrate. Note de contenu : - Resins
- Erichsen pen tester
- Dilution of EB 600 with 50 % of different monomers
- Influence of photoinitiator
- Influence of EB P115
- Influence of concentration of different photoinitiators
- UV-curing under nitrogen
- Taber-Haze testPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12009
in PAINTINDIA > Vol. LIV, N° 4 (04/2004) . - p. 85-94[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000452 - Périodique Bibliothèque principale Documentaires Disponible