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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
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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 Bio-based reactive diluent derived from cardanol and its application in polyurethane acrylate (PUA) coatings with high performance / Yun Hu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
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Titre : Bio-based reactive diluent derived from cardanol and its application in polyurethane acrylate (PUA) coatings with high performance Type de document : texte imprimé Auteurs : Yun Hu, Auteur ; Guodong Feng, Auteur ; Qianqian Shang, Auteur ; Caiying Bo, Auteur ; Puyou Jia, Auteur ; Chengguo Liu, Auteur ; Feng Xu, Auteur ; Yonghong Zhou, Auteur Année de publication : 2019 Article en page(s) : p. 499-509 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biomatériaux
Caractérisation
Cardanol
Chimie -- Essais et réactifs
Copolymère uréthane acrylate
Diluants
Huile de ricin et constituants
Polymères hautes performances
Revêtements -- Propriétés mécaniques
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : A UV-curable cardanol-based monomer (ECGE) was prepared using cardanol and epichlorohydrin, followed by epoxidation of the unsaturation in alkyl side chains of cardanol segments. After its chemical structure was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance (1H NMR), ECGE was used as a reactive diluent to copolymerize with castor oil-based polyurethane acrylate (PUA) and a series of UV-curable coatings were prepared. Results showed that the viscosity and volume shrinkage of the UV-curable PUA system decreased significantly after the introduction of cardanol-based monomer while maintaining reasonably high bio-renewable contents; when containing 50% of ECGE, the biomass content reaches 66.2%, which is 1.41 times that of pure resin. In addition, the coating properties were evaluated to determine hardness, adhesion, flexibility, and water resistance. The properties of UV-curable thermoset were also studied using tensile testing, dynamic mechanical thermal analysis, and thermogravimetric analysis. The cardanol-based coatings showed excellent adhesion, flexibility, medium hardness, and enhanced char yield although tensile strength, tensile modulus and glass transition temperatures were somewhat diminished. All these performances can be attributed to the unique architectures of ECGE that combined the structural features of rigid benzene ring and long flexible alkyl chains. The UV-curing behavior was determined using real-time IR, and the results indicated that the conversion of unsaturated bond was increased with more concentration of ECGE. Note de contenu : - MATERIALS - Characterization - Synthesis of epoxidized cardanol glycidyl ether (ECGE) - Preparation of the UV-curable coatings
- RESULTS AND DISCUSSION : Structure characterization of ECG - Bio-based content of the UV-curable coatings - Viscosity - UV-curing behaviors of the UV-curable bio-based coatings - Volumetric shrinkage of the UV-curable coatings - Gel contents of the UV-curable coatings - Tensile properties - DMA of the UV-curable bio-based coatings - Thermal properties of the UV-curable bio-based coatings - Coatings properties of the UV-curable bio-based coatings - Proposed dual-curing mechanismDOI : 10.1007/s11998-018-0128-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0128-6 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32420
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Code-barres Cote Support Localisation Section Disponibilité 20894 - Périodique Bibliothèque principale Documentaires Disponible Biobased reactive diluent for UV-curable urethane acrylate oligomers for wood coatings / Dipak S. Tathe in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 1 (01/2015)
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Titre : Biobased reactive diluent for UV-curable urethane acrylate oligomers for wood coatings Type de document : texte imprimé Auteurs : Dipak S. Tathe, Auteur ; Ramanand N. Jagtap, Auteur Année de publication : 2015 Article en page(s) : p. 187-196 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biomatériaux
Bois -- Revêtements
Chloroformiate d'allyle
Copolymère uréthane acrylate
Diluants
Huile de ricin et constituants
Oligomères
Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : Castor oil (CO)-based reactive diluent for UV-curable urethane acrylate oligomers was synthesized by the reaction of a CO with diethanolamine and the resultant product was subsequently reacted with allyl chloroformate. The reactive diluent was characterized by FTIR and 1H NMR techniques. This reactive diluent was incorporated in a urethane acrylate oligomer and photoinitiator at different weight fractions varying from 5 to 25 wt% for UV curing. The effects of reactive diluent concentrations on the viscosity of the formulations along with mechanical, chemical, and optical properties of UV-curable coatings were studied. Furthermore, the cured films were evaluated for glass transition temperature (T g) determined by differential scanning calorimetry and thermal stability by thermogravimetric analysis. Gel content and water absorption of UV-cured films were evaluated. Note de contenu : - EXPERIMENTAL : Material - Synthesis of diethanol fatty amide of castor oil (FACO) - Synthesis of triallyl format fatty amide (TFFA) - Formulation of UV-curable coating - Characterization - Testing of coatings
- RESULTS AND DISCUSSION : Physico-chemical analysis - FTIR analysis of CO, FACO, TFFA and UV-cured polymer - 1HNMR spectra of triallyl formate fatty amide (TFFA) - Effect of reactive diluent concentration on viscosity - Water absorption properties -Differential scanning calorimetry (DSC) - Thermogravimetric analysis of UV-cured films - Gloss of UV-cured coating - Coating propertiesDOI : 10.1007/s11998-014-9616-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9616-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23217
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Code-barres Cote Support Localisation Section Disponibilité 16952 - Périodique Bibliothèque principale Documentaires Disponible Bright future ahead for bio-based photosensitive coatings / Michael Shen in EUROPEAN COATINGS JOURNAL (ECJ), (01-02/2023)
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Titre : Bright future ahead for bio-based photosensitive coatings : Preparation and properties of UV-curable coatings obtained from renewably-sourced 1,3-propanediol Type de document : texte imprimé Auteurs : Michael Shen, Auteur ; Tianxiang Chen, Auteur ; Guiyou Wang, Auteur Année de publication : 2023 Article en page(s) : p. 44-49 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
Caractérisation
Copolymère uréthane acrylate
Diluants
Oligomères
Polytriméthylène éther glycol
Propanediol
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Environmental and resource concerns have revealed a pressing need for bio-based reactive diluents in UV-curable coatings. 1,3-PDODMA could be the answer. Note de contenu : - Experimental
- Synthesis of reactive diluents
- Preparation of the UV-cured coatings
- Characterisation
- Key considerations for successful synthesis of reactive diluents
- Viscosity : a key issue
- Physical properties of the UV-cured films
- High C=C content for high swelling resistance
- High crosslink density leads to high mechanical properties
- Coating properties of the UV-cured films
- Transparency : compatibility factors
- Fig. 1 : Syntheses of bio-based 1,3-PDODMA and PO3GDA
- Table 1 : Comprehensive properties of the UV-cured films
- Table 2 : Coating properties of the UV-cured PUA/PDODMA coatingsEn ligne : https://drive.google.com/file/d/1LM9KH6Pe_WRjCGXC9I9f2m6z-WzuC8Et/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38738
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Code-barres Cote Support Localisation Section Disponibilité 23833 - Périodique Bibliothèque principale Documentaires Disponible 23831 - Périodique Bibliothèque principale Documentaires Disponible Castor oil-based waterborne hyperbranched polyurethane acrylate emulsion for UV-curable coatings with excellent chemical resistance and high hardness / Daidong Wei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
PermalinkCO2-triggered hydrophobic/hydrophilic switchable waterborne polyurethane-acrylate with simultaneously improved water resistance and mechanical properties / Liangfeng Xu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
PermalinkCoating performance and characteristics for UV-curable aliphatic urethane acrylate coatings containing norrish type I photoinitiators / Byoung-Hoo Lee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 3 (07/2006)
PermalinkColour and gloss properties of pigment-printed synthetic leather using an ultraviolet-curable water-borne polyurethane acrylate binder and two photoinitiators at different ratios / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 2 (04/2019)
PermalinkDevelopment of bio-based polyester-urethane-acrylate (PUA) from citric acid for UV-curable coatings / Debarati Maity in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
PermalinkPermalinkEffect of addition of cellulose nanocrystals to wood coatings on color changes and surface roughness due to accelerated weathering / Vahe Vardanyan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
PermalinkEffect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)
PermalinkEffect of the particle sizes of silica on the properties of UV-curing matting coatings / Ziyuan Yang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)
PermalinkExcellent water resistance and mechanically robust waterborne polyurethane-acrylate based on dithiol post-chain extension / Zhiqiang Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
PermalinkFormulation and optimization of radiation-curable nonisocyanate polyurethane wood coatings by mixture experimental design / Forough Zareanshahraki in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
PermalinkFunctional fillers in UV curing wood coatings / Hubert Oggermüller in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4591 (12/2013)
PermalinkGreening radiation curing / Hugues van den Bergen in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2015)
PermalinkHow to speed up the UV curing of water-based acrylic coatings / C. Decker in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 2 (04/2004)
PermalinkInnovation dans les fluorosilicones SILTECH et améliorations des propriétés de "coatings" grâce à ces additifs / Robert Ruckle in DOUBLE LIAISON, N° 598 (05/2014)
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