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Production and application of biochar in a UV radiation-curable epoxy paint as a substitute for graphite / Júlio Marchesini in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Production and application of biochar in a UV radiation-curable epoxy paint as a substitute for graphite Type de document : texte imprimé Auteurs : Júlio Marchesini, Auteur ; Daniele Perondi, Auteur ; Marcos VinÃcius Marocco, Auteur ; Valéria Grabas Pellizzoni, Auteur ; Gustavo Onzi Carberlon, Auteur ; Marcelo Godinho, Auteur ; Diego Piazza, Auteur Année de publication : 2023 Article en page(s) : p. 957-971 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
BiocharLe biochar est un amendement du sol issu de la pyrolyse de biomasse. Il est utilisé en agriculture pour augmenter la qualité des sols, et donc leur productivité ; il est également utilisé dans la lutte contre le réchauffement climatique comme solution de séquestration à long terme de carbone atmosphérique dans les sols.
Le biochar se différencie du charbon de bois par son utilisation (comme intrant plutôt que comme combustible) et donc par son impact environnemental (il agit comme un puits de carbone plutôt que de libérer du CO2 dans l'atmosphère lors de la combustion).
Caractérisation
Déchets industriels -- Recyclage
Epoxydes
Essai Wolff-Wilborn
Essais de brouillard salin
Graphite
Photoréticulation
Production
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : Research on the use of sustainable fillers which promote improvements in the paints has been reported over the years. The present study investigated the production and characterization of a biochar produced from Pinus elliottii for application in an epoxy paint cured by ultraviolet radiation, comparing it with graphite, in proportions of 12.5 and 20 wt%. The Pinus elliottii sample was initially ground, and then submitted to physical and morphological characterization by field emission scanning electron microscopy (SEM) and X-ray diffraction (XRD). Later, the Pinus elliottii sample was subjected to pyrolysis at a temperature of 1050°C at a low heating rate (5°C/min). Biochar and graphite were separately incorporated into an epoxy UV-curable paint. The painted samples had their thickness measured and their mechanical and physical properties evaluated, namely gloss, hardness, bending, impact, contact angle with water, and exposure to salt spray. Biochar and graphite promoted a reduction in gloss and improved pencil hardness when incorporated into a UV-curable epoxy paint. In the salt spray resistance test, samples containing both biochar and graphite showed a slight delay in the beginning of the corrosion process. However, samples with biochar behaved better than samples with graphite in terms of blistering of the film in the incision region. Note de contenu : - MATERIALS AND METHODS
- RESULTS AND DISCUSSION : Biochar production - Characterization of biochar and graphite - Characterization of UV-curable paints
- Table 1 : Nomenclature and composition of the paint samples produced
- Table 2 : Results of specific surface area and pore distribution of biochar
- Table 3 : Gloss measurement results of cured paint samples
- Table 4 : Pencil hardness test results
- Table 5 : Contact angle test results
- Table 6 : Salt spray test resultsDOI : https://doi.org/10.1007/s11998-022-00715-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00715-w.pdf?pdf=button% [...] Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39440
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 957-971[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Reaction-driven solvent transport in UV-curable phase-separating coatings in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
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Titre : Reaction-driven solvent transport in UV-curable phase-separating coatings Type de document : texte imprimé Année de publication : 2023 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Fourier, Spectroscopie infrarouge à transformée de
Lumière -- Diffusion
Microscopie électronique à balayage
Photoréticulation
Polyester acrylate
Réaction de couplage
Réflexion totale atténuée
Revêtement en phase solvant
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiques
Séparation de phasesIndex. décimale : 667.9 Revêtements et enduits Résumé : We experimentally examined the time-evolutions of local compositions in photocurable, monomer-solvent-initiator ternary liquid film coatings using attenuated total-reflectance-Fourier transform infrared spectroscopy. The coatings exhibited phase separation upon UV exposure owing to the inherent partial miscibility between the solvent and the polymer. The solvent concentration at the bottom of the coating increased when exposed to UV light for 1 s from the top, showing a solvent transport along the irradiation direction. The differences in solvent concentration before and after UV exposure showed good agreement with model predictions based on stress-induced non-Fickian solvent mass transport. The solvent concentrations at the bottom remained constant in the case of discrete phase structures, whereas it exponentially decayed over time in bicontinuous phase structures. These results suggest that light-tunable microstructures enable the relaxation of the reaction-driven nonuniformity in solvent concentration distributions. Note de contenu : - Materials
- Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis
- Scanning electron microscopy
- Light scattering analysis
- Table 1 : Material constants to express A1363/A981 as a cubic function with respect to the solvent mass fractionDOI : https://doi.org/10.1007/s11998-022-00661-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00661-7.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38778
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in UV cure epoxy acrylate oligomers / R. D. Kulkarni in PAINTINDIA, Vol. LXI, N° 7 (07/2011)
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Titre : Recent developments in UV cure epoxy acrylate oligomers Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; M. E. Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2011 Article en page(s) : p. 58-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Epoxydes
Éther de diglycidyle et de bisphénol A
Oligomères
Réticulation (polymérisation)
Revêtements -- Séchage sous rayonnement ultravioletTags : 'UV curing' Oligomères 'Éther de diglycidyle et bisphénol A' 'Epoxy acrylate' 'Epoxyde cycloaliphatique' 'Monomère acrylate hybride' Index. décimale : 667.9 Revêtements et enduits Résumé : The performance properties and industrial applications of epoxy acrylate prepolymer based UV cure coatings are primarilygoverned by the nature of structural modification in backbone / en capping of pre polymer. The present review paper therefore covers the recent developments in the synthesis and characterisation of diverse epoxy acrylate oligomers including acrylate capped BPA/novolac epoxy, epoxidised oils and cycloaliphatic epoxy systems. The alkoxysilane, siloxane, adipic acid, fluorinated and phenyl phtalazinone modifications of epoxy diacrylate for obtaining special performance properties have been highlighted. Note de contenu : - Acrylated bisphenol-A epoxy oligomers
- Epoxy novolac (meth)acrylate oligomers
- Acrylated epoxidised oils and cycloaliphatic hybrid epoxy acrylates
- Modified speciality epoxy acrylate oligomers : Alkoxysilane modified epoxy acrylate oligomer - Polydimethylsiloxane epoxy acrylate oligomer - Adipic acid modified methacrylated epoxy resin - Epoxy methacrylate with phenyl phthalazinone backbone
- Applications of epoxy acrylate UV cure coatings (Reinhold S., 2006)
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11870
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Code-barres Cote Support Localisation Section Disponibilité 13281 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in UV cure photoinitiators / R. D. Kulkarni in PAINTINDIA, Vol. LXI, N° 1 (01/2011)
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Titre : Recent developments in UV cure photoinitiators : Part I - Unimolecular cleavable photoinitiators Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; Mayur Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2011 Article en page(s) : p. 59-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultravioletTags : 'Photoinitiateurs unimoléculaire' '?-hydroxy alkylphenones ' 'Oxyde d'acylphosphine' '?-aminoalkylphenones' Acétophénones Benzicétals 'Dérivées de la benzoine' Dissociation Index. décimale : 667.9 Revêtements et enduits Résumé : Photoinitiators are essential for the efficient transformation of the light energy for obtaining species (free radicals or stabilized triplet excited state) that are capable of initiating the curing reactions of photopolymerisation. Present review, which is second in the series on UV cure coatings, covers structure, activity, and basis of selection criteria of unimolecular cleavage, physical properties, coating characteristics and applications of benzoin and its derivatives, benzilketals, acetophenones, α-aminoalkylphenones, α-hydroxy alkylphenones, acylphosphine oxide and their derivatives have been presented. In addition, few new commercial photoinitiators,launched during last vew decades, have been evaluated for their role in enhancement of curing efficiency. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11022
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Code-barres Cote Support Localisation Section Disponibilité 012894 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in UV cure photoinitiators / R. D. Kulkarni in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
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Titre : Recent developments in UV cure photoinitiators : Part II - Bimolecular abstractable photoinitiators Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; Mayur Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2011 Article en page(s) : p. 72-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement ultravioletTags : 'Photoinitiateurs bimoléculaires' Benzophénones Tioxanthones Anthraquinones '?-kéto coumarin' '1, 2 système dikétone' 'Séchage UV Index. décimale : 667.9 Revêtements et enduits Résumé : Bimolecular photoinitiators are those aryl-aryl ketone derivatives, which upon irradiation, abstract hydrogen ion from a coinitiator generating coinitiator derivated radical which in turn initiate photopolymerisation. Present review, which is third in the series on UV cure coatings, covers structure, activity, cleavage mode, cure performance, physical characteristics, trade names, advantages and drawbacks, as well as a detail accounting of all the recent research investigation and innovations in reference to the following Type II PI systems : benzophenone(s), (thio)xanthones(s), anthraquinones, α-keto coumarin, 1, 2 diketone derivatives. in addition, new commercial photoinitiators, launched during last decade, have been evaluated for their role in enhancement of curing efficiency. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11847
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Code-barres Cote Support Localisation Section Disponibilité 013221 - Périodique Bibliothèque principale Documentaires Disponible A review of radiation curing : new surface control additives / Karen Bowling in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 854 (03/1996)
PermalinkRobust, high-gloss interior finish in INTERNATIONAL SURFACE TECHNOLOGY (IST), N° 2/2010 (2010)
PermalinkRoll-to-roll micromolding ov UV curable coatings / Yuyang Du in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
PermalinkA self-assembled, silicone acrylate coating formulation and detection of the optically non-uniform structure with reflectance spectroscopy / Kohei Masuda in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)
PermalinkShedding light on greener resins / Jigarkumar Patel in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2011 (04/2011)
PermalinkShifting to acrylics / Simon Poulton in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4457 (10/2002)
PermalinkPermalinkSignificantly increased transfer efficiency / Atman Fozdar in EUROPEAN COATINGS JOURNAL (ECJ), N° 11 (11/2018)
PermalinkSilicone free for UV / Graham Clark in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4497 (02/2006)
PermalinkSmall and smaller- Incorporating nanosilica technology of different particle size for new improvements in UV-curable coatings / Marco Heuer in PAINTINDIA, Vol. LXIV, N° 6 (06/2014)
PermalinkSmart coatings for plastics / Giorgio Macor in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4488 (05/2005)
PermalinkSmarter curing / Erich Beck in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4466 (07/2003)
PermalinkSoy-based UV-curable thiol–ene coatings / Zhigang Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 5 (09/2010)
PermalinkPermalinkStrike back the bubble attack / Marcel Krohnen in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4629 (03/2017)
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