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Effect of composition on performance properties in cationic UV-curable coating systems / Heather A. Nash in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)
[article]
Titre : Effect of composition on performance properties in cationic UV-curable coating systems Type de document : texte imprimé Auteurs : Heather A. Nash, Auteur ; Heidi J. Docktor, Auteur ; Dean C. Webster, Auteur Année de publication : 2004 Article en page(s) : p. 153-161 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse mécanique dynamique
Calorimétrie
Cinétique chimique
Diluants
Epoxydes
Formulation (Génie chimique)
Fourier, Spectroscopie infrarouge à transformée de
Photoréticulation
Réflexion totale atténuée
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Revêtements -- Séchage sous rayonnement électronique
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : Cycloaliphatic epoxides have been widely studied in the coatings industry because of the excellent mechanical properties of films prepared using these monomers and various diluents. In this study, polyol was studied as a diluent for formulations containing cycloaliphatic epoxide and oxetane in order to evaluate the effect on coatings properties and curing kinetics. The addition of polyol was shown to have an effect on both mobility of the cation as a chain transfer agent, along with the more general effect of flexibility, as evidenced by the hardness data, which increased when a small amount of polyol was added, but decreased as more polyol was included in the formulation. In terms of crosslinking kinetics, it was found that the inclusion of polyol resulted in an increase in conversion during UV irradiation. The level of polyol also had an effect on other properties, such as Tg and crosslink density. DOI : 10.1007/s11998-004-0010-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-004-0010-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3897
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 1, N° 3 (07/2004) . - p. 153-161[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000587 - Périodique Bibliothèque principale Documentaires Disponible Effect of polymer composition on performance properties of maleate-vinyl ether donor-accceptor UV-curable systems / Neena Ravindran in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 3 (07/2006)
[article]
Titre : Effect of polymer composition on performance properties of maleate-vinyl ether donor-accceptor UV-curable systems Type de document : texte imprimé Auteurs : Neena Ravindran, Auteur ; Dean C. Webster, Auteur ; Ankit Vora, Auteur Année de publication : 2006 Article en page(s) : p. 213-219 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cinétique chimique
Polyesters insaturésLes résines de polyesters insaturés (UP) sont obtenues par polycondensation
d’un ou de plusieurs diacides avec un ou plusieurs glycols, l’un, au moins, des constituants contenant une double liaison éthylénique susceptible de réagir ultérieurement sur un composé vinylique, acrylique ou allylique.
Par le terme résine polyester, on désigne en fait la dissolution du prépolymère polyester insaturé dans un solvant copolymérisable, le plus utilisé étant le styrène. C’est sous cette forme liquide que les résines polyesters sont livrées aux transformateurs.
Après addition de différents adjuvants, charges et renforts, divers procédés de transformation provoquent, sous l’action d’un système catalytique approprié, la copolymérisation finale de la résine en un objet thermodurcissable.
Les polyesters insaturés sont d’un usage relativement ancien (1950), essentiellement
dans le bâtiment (moulage au contact). Ils ont connu un renouveau important à partir de 1980, en particulier au niveau des formulations et de la fiabilité des procédés grâce au développement de technologies industrielles de moulage par injection et par compression dans l’industrie automobile.
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés physiques
Revêtements -- Séchage sous rayonnement électronique
Revêtements -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : The effect of unsaturated polyester backbone composition on the properties of donor-acceptor-UV-cured coatings was explored. The polyesters were designed with similar molecular weights and levels of unsaturation, but with otherwise widely varying backbone compositions. UV-curable coatings were formulated with stoichiometric levels of triethylenglycol divinyl ether and a photoinitiator. The resulting coatings had a broad range of properties, which were found to correlate with the properties and compositions of the polyester backbone polymers. A relatively flexible backbone resulted in lower glass transition temperatures (Tg). The polymer Tg was found to influence the conversion of double bonds achieved during UV curing. Reaction kinetics were evaluated for the coating systems and the results confirmed that the Tg of the systems influenced the double bond conversion. Thermal stability and König pendulum hardness were also found to vary with the backbone composition of the constituent polyester. DOI : 10.1007/BF02774510 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774510.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3694
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Code-barres Cote Support Localisation Section Disponibilité 005076 - Périodique Bibliothèque principale Documentaires Disponible Electron beam curable coatings and th use of vegetable oils in them : A review / Prakash A. Mahanwar in PAINTINDIA, Vol. LIX, N° 5 (05/2009)
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Titre : Electron beam curable coatings and th use of vegetable oils in them : A review Type de document : texte imprimé Auteurs : Prakash A. Mahanwar, Auteur ; Merlyn Thandu, Auteur Année de publication : 2009 Article en page(s) : p. 101-112 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Huiles et graisses végétales
Nanoparticules
Revêtements -- Séchage sous rayonnement électroniqueTags : Electron beam Curing Vegetable oils Nanomaterials Index. décimale : 667.9 Revêtements et enduits Résumé : The use of high-intensity radiation (EB and UV) as an alternative to the thermal process in curing and polymerization has shown rapid growth and wide acceptance over the past few years in many industrially important technological areas. Also as coatings industries are forced to curb VOC emissions, use of renewable raw materials liki vegetable oils in coatings formulation are finding increasing applications. The general features of electron beam curing systems and their applications are reviewed. Also discussed are the use of vegetable oils in EB curable systems. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6682
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Code-barres Cote Support Localisation Section Disponibilité 011488 - Périodique Bibliothèque principale Documentaires Disponible Electron beam curable nano-coatings / Prakash A. Mahanwar in PAINTINDIA, Vol. LIX, N° 6 (06/2009)
[article]
Titre : Electron beam curable nano-coatings Type de document : texte imprimé Auteurs : Prakash A. Mahanwar, Auteur ; Pallavi Deskmukh, Auteur Année de publication : 2009 Article en page(s) : p. 61-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs
Faisceaux électroniques
Nanoparticules
Réticulation (polymérisation)
Revêtements -- Séchage sous rayonnement électroniqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Many coating industries come under increasing pressure to reduce energy costs, speed production & comply with strict environmental standards ; many are looking at the innovations of UV/EB technology for solution of the problems. Electron beam (EB) curing involves free radical polymerization, since activation energy in EB is low for chain propagations, high curing speeds can be achieved at ambient temperature. Nano-composite EB curable coatings by incorporation of nano-particles and pigments enhances the coatings properties. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6259
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Code-barres Cote Support Localisation Section Disponibilité 011631 - Périodique Bibliothèque principale Documentaires Disponible Electron beam curing - Emerging platform for wood coatings / Yogesh B. More in PAINTINDIA, Vol. LXX, N° 3 (03/2020)
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Titre : Electron beam curing - Emerging platform for wood coatings Type de document : texte imprimé Auteurs : Yogesh B. More, Auteur Année de publication : 2020 Article en page(s) : p. 74-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Monomères
Oligomères
Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement électronique
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Wood coatings are used to protect and decorate wooden substrate. The real beauty of these coatings is that they are available in various types of chemistries-whether it is acid curing, one component polyurethane, two component polyurethane, water-based or recently developed ultraviolet curing (UV). Several reviews have been published on these chemistries and discussed. But what is the next chemistry for wood coating is a million dollar question and yes, there is an answer to it. The chemistry which probably fits into this answer is Electron Beam curing (EB). UV curable chemistries always depend on a photoinitiator molecule to catalyze the polymerization process. When the photointiator is excited by a UV light, it releases the energy needed for the diluents to react. EB curing systems deliver energy directly to the polymer in the form of energetic electrons. EB curable chemistries are almost identical to UV curable, but EB coatings do not require a photointiator. Whi le UV curing is highly dependent on the efficiency of the photoinitiator, EB curing does not require any special additives or catalysts. According to studies, electron is subatomic particle with negative charge and plays an essential role in numerous physical phenomena, such as electricity, magnetism, chemistry and thermal conductivity. The same source of electrons is used to cure the coatings in case of Electron Beam technology with minimal extractable from coating. This review article reveals about the mechanism of EB coatings, compositions of EB coatings, future possibilities of EB coatings on wood and additional benefits in near future. Note de contenu : - INTRODUCTION : EB curing mechanism - Energy transfer - Depth of penetration - Absorbed dose - D = K xI/V - Beam uniformity - Throughput
- ELECTRON BEAM WOOD COATINGS : EB curable compositions - Monomers - Additives
- FUTURE POSSIBILITIES OF ELECTRON BEAM WOOD COATINGS
- Fig. 1 : Electromagnetic spectrum
- Fig. 2 : Typical diagram of EB curing technique
- Fig. 3 : Range of penetration with different accelerating voltage 13µm titanium foil and 20 mm of nitrogen
- Fig. 4 : Reaction mechanism of EB curing process
- Fig. 5 : Penetration thickness for UV and EB technology
- Table 1 : Densities of various species of wood
En ligne : https://drive.google.com/file/d/1FIEA3Gxzpxz-5OTBR7dJ1j5Ztc7HwGHH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34654
in PAINTINDIA > Vol. LXX, N° 3 (03/2020) . - p. 74-80[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22358 - Périodique Bibliothèque principale Documentaires Disponible Electron beam (EB) curable coatings : an overview / Mhatre Roshni in PAINTINDIA, Vol. LVIII, N° 6 (06/2008)
PermalinkEnergy curable resin for smudge-free, easy-to-clean, fingerprint removal coatings / Mouhcine Kanouni in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4562 (07/2011)
PermalinkFormulating strategies for low migration and low odour products / Susan E. Bailey in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4602 (11/2014)
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)
PermalinkInvestigation of the properties of UV-curing acrylate-terminated unsaturated polyester coatings by utilizing an experimental design methodology / Ahmet Nebioglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)
PermalinkIrradiation-cured graphene composite films : a comparison between UV and EB curing / Ziyue Wei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
PermalinkPolydimethylsiloxanes for UV-curing systems / Bernhard Hackl in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/97 (11/1997)
PermalinkA review of radiation curing : new surface control additives / Karen Bowling in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 854 (03/1996)
PermalinkSilicone free for UV / Graham Clark in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4497 (02/2006)
PermalinkThe expanding horizons of ebeam technology / John E. Salkeld in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4619 (04/2016)
PermalinkUV/EB curable laminating oligomer for adhesion / Deborah A. Smith in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4526 (07/2008)
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