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Development 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)
[article]
Titre : Development of bio-based polyester-urethane-acrylate (PUA) from citric acid for UV-curable coatings Type de document : texte imprimé Auteurs : Debarati Maity, Auteur ; Rahul Tade, Auteur ; Anagha S. Sabnis, Auteur Année de publication : 2023 Article en page(s) : p. 1083-1097 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biopolymères
Bois -- Revêtements protecteurs
Caractérisation
Chimie analytique
Citrique, AcideL'acide citrique est un acide alpha hydroxylé de formule C6H8O7.
Il joue un rôle central dans le métabolisme de tous les organismes vivants et tient son nom de son origine; le citron.
L'acide citrique est biodégradable et n'est pas toxique pour l'homme ni pour l'environnement. Cependant, comme tout acide, il est irritant et peut provoquer des brûlures s'il entre en contact prolongé avec des muqueuses.
À pH physiologique, il est présent sous forme de sa base conjuguée, le citrate, qui est un chélateur de l'ion calcium dans le sang.
Copolymère uréthane acrylate
Polyesters
Polymères -- Synthèse
Polymères ramifiés
Polyols
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A novel UV-curable hyperbranched polyester-urethane-acrylate (PUA) resin was successfully synthesized using citric acid as a core bio-based material and ester-urethane-acrylate linkage as the arm and was applied on both wood and metal substrates. Citric acid was employed as a functionality-enhancing bio-based monomer for coating applications. This resin (PUA) was synthesized from citric acid (CA)-based polyester-polyol (CAP) and subsequently reacted with isophorone diisocyanate (IPDI) and end-capped with 2-hydroxyethylmethacrylate (HEMA) to form a tetra-functional acrylate precursor (UCAP). Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (1H-NMR) and gel permeation chromatography (GPC) were used to characterize the citric acid-based polyester-urethane-acrylate (UCAP). This oligomer was formulated with a reactive diluent and a photoinitiator (UCAP PUA), applied on both wood and metal substrates and cured under UV-radiation. The mechanical, chemical and thermal properties of the coated substrates were investigated and compared to a commercial urethane acrylate (CUA). The mechanical properties such as crosscut adhesion, pencil hardness, impact strength and flexibility showed comparable results. Even though the chemical resistance and free film properties of the synthesized urethane acrylate (UCAP) were found to be inferior, the thermal properties were observed to be superior. Note de contenu : - MATERIALS AND METHODS : Raw materials and chemicals - Synthesis of citric acid-based polyester-polyol (CAP) - Synthesis of citric acid based polyester-urethane-acrylate (UCAP) - Formulation of citric acid-based polyester-urethane-acrylate (UCAP PUA) - Characterizations and instrumentations
- RESULTS AND DISCUSSION : Chemical analysis - Instrumental analysis - Characterization of coated films
- Table 1 : Formulations of commercial and UCAP UV oligomers
- Table 2 : GPC analysis of CAP and UCAP
- Table 3 : Comparative optical and mechanical properties between commercial UA and UCAP PUA coatings
- Table 4 : Comparative chemical properties between commercial UA and UCAP PUA coatings
- Table 5 : Comparative free film properties between commercial UA and UCAP PUA coatings
- Table 6 : Comparative stain tests between commercial UA and UCAP PUA
- Table 7 : Comparative TGA data of Commercial UA and UCAP PUADOI : https://doi.org/10.1007/s11998-022-00728-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00728-5.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39449
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1083-1097[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Drying of linseed oil wood coatings using reactive diluents / C. Stenberg in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B2 (05/2005)
[article]
Titre : Drying of linseed oil wood coatings using reactive diluents Type de document : texte imprimé Auteurs : C. Stenberg, Auteur ; M. Svensson, Auteur ; E. Wallström, Auteur ; M. Johansson, Auteur Année de publication : 2005 Article en page(s) : p. 119-126 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Chimiluminescence
Diluants
Huile de lin -- Séchage
Oxydation
Spectrométrie infrarougeIndex. décimale : 667.9 Revêtements et enduits Résumé : Studies of the drying of two linseed oils with different fatty acid patterns, oil A (74.2% linoleic acid) and oil B (55.2% of linolenic acid), show that the structural variations and the addition of the methyl ester of oil A as a reactive diluent (0, 20 and 40wt%) influenced the drying performance and final film properties of the oils.
The incorporation of reactive diluents reduced the effects of surface sealing for oil B at higher temperatures and increased the through-drying rate of oil B. Softer coatings were obtained for both oils when using a reactive diluent. Chemical reactions induced by the wood substrates are shown to affect the drying.Note de contenu : - EXPERIMENTAL : Materials - Instruments and procedures
- RESULTS AND DISCUSSION : The oxidation rate - The influence of reactive diluents - The effect of a wood substrate on the oxidative drying
- Table 1 : The composition of the evaluated formulations
- Table 2 : The fatty acid composition (%) of the linseed oils A and B. The oils mainly differ in the content of the reactive fatty acids (ie linoleic (C18:2) and linoleic (C18:3) acid)
- Table 3 : Pendulum hardness dataDOI : 10.1007/BF02699543 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699543.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5425
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B2 (05/2005) . - p. 119-126[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001966 - Périodique Bibliothèque principale Documentaires Disponible 002343 - Périodique Bibliothèque principale Documentaires Disponible Durable water-borne wood coatings / Peter Greenwood in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2018)
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Titre : Durable water-borne wood coatings : Adding silane-modified colloidal silica enhances performance of water-borne clear coatings Type de document : texte imprimé Auteurs : Peter Greenwood, Auteur Année de publication : 2018 Article en page(s) : p. 40-47 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Bois -- Vernis
Dureté (matériaux)
Epoxydes
Essais de résilience
Essais dynamiques
Formulation (Génie chimique)
Gel de silice
Polymères à silane modifié
Résistance à l'abrasion
Vernis -- Propriétés mécaniques
Vernis en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : When making the switch from solvent-borne to water-borne coatings the goal is to not compromise the function and performance of wood coatings. The effect of using epoxy silane-modified colloidal silica in water-based clear coatings on open time and anti-blocking, sanding and mechanical properties was investigated. Note de contenu : - Improving mechanical properties
- Lowering VOC
- Results
- Aesthetic properties not compromised
- Significant enhancement of block resistance
- Beneficial for sanding properties
- Keeping the solvent-borne look
- Significant improvements in mechanical properties in 2-pack systems
- Well distributed silica particles are beneficial
- The effect on abrasion resistance is formulation dependent
- Extended open time
- Influence on open time at constant viscosity
- Influence on open time for parquet lacquer formulations
- Fig. 1 : Sandability - sandpaper P180 and P 240
- Fig. 2 : Grain accentuation - Enhancement of grain structure by wood lacquers. 1-K water-based lacquer formulation N° 7 with and without 20% SiO2 addition of epoxy-silane modified colloidal silica
- Fig. 3 : Persoz hardness as a function of coating composition and drying time at ambient temperature for formulation N° 8
- Table 1 : Gloss and haze
- Table 2 : Block resistance results for clear 1-pack acrylic formulations
- Table 3 : Taber abrasion resistance - weight loss mg.
- Table. 4 : Open time - Influence of colloidal silica on open time at constant solid contents. Open time by brush method (ASTM D7488) and drying time recorder (ASTM D5895)
- Table 5 : Open time for PUD parquet lacquer formulationsEn ligne : https://drive.google.com/file/d/1QwITcDE_hsQMUnA0CAZXfo0ux5JQlnX5/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30838
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2018) . - p. 40-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20098 - Périodique Bibliothèque principale Documentaires Disponible A dutch portrait of frames / Johan Nienhuis in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4456 (09/2002)
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Titre : A dutch portrait of frames Type de document : texte imprimé Auteurs : Johan Nienhuis, Auteur Année de publication : 2002 Article en page(s) : p. 38-40 Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Durée de vie (Ingénierie)
Essais (technologie)
Primaire (revêtement)
Revêtements -- Effets du climat
Revêtements en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Last month, in the firts part of this article, PPCJ covered the reasons to switch to waterborne wood primers and this month, the author describes testing and development.
To evaluate the technical feasibility of waterborne primers, an extensive testing program was set up. These test series are intended to evaluate the performance of the primers and to validate their performance compared to solventborne primers. The test program is a result of cooperation of paint manufacturers, joinery industries and an organisation controlling the overall quality of joinery products. The usual test program consists of outdoor exposure and laboratory tests. Paint systems are exposed outside for four years. The complete paint system should have good outdoor durability during these four years, while the primer should have wood protecting properties on its own for one year's exposure. The outdoor exposure L-joints are evaluated for dry and wet adhesion, cracking, blistering, chalking and flaking. These durability tests are performed after optimum drying.Note de contenu : - Water uptake tests
- General materials and methods
- Evaluation of test methods
- Colour variations
- Alterning the drying conditions
- Overall technical feasibility
- Cost saving scenarios
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in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 192, N° 4456 (09/2002) . - p. 38-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000321 - Périodique Bibliothèque principale Documentaires Disponible Effect of curing process on simulated antisoiling properties of sol–gel coating on pine sapwood / Juha Nikkola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 4 (07/2010)
[article]
Titre : Effect of curing process on simulated antisoiling properties of sol–gel coating on pine sapwood Type de document : texte imprimé Auteurs : Juha Nikkola, Auteur ; Riitta Mahlberg, Auteur ; Juha Mannila, Auteur ; Saila Jämsä, Auteur Année de publication : 2010 Article en page(s) : p. 441-448 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs
Matériaux hybrides
Revêtements:Peinture
Sol-gel, ProcédéTags : 'Revêtement hybride' 'Propriétés antisalissures' 'Aubier du pin' Hydrophobicité Oléophobicité Index. décimale : 667.9 Revêtements et enduits Résumé : Recently, inorganic–organic hybrid coatings produced by the sol–gel route have proven to be a potential protective treatment for wooden surfaces. In this study, the effect of curing process on simulated antisoiling properties of sol–gel coating was investigated. The sol–gel coating was spray-coated on pine sapwood and cured with different temperature and time combinations. The antisoiling properties were studied by measuring the water contact angle of the coating after different curing processes. In addition, abrasion resistance and contact angle of oleic acid were measured. An optical profilometer was used to investigate surface roughness of the coating. Sufficient hydro- and oleophobicity were obtained with all of the curing parameters. The comparison between curing parameters showed that lower temperature and 1–3 h curing time leads to significant improvement in the durability of the water and oil repellent properties of the coating. DOI : 10.1007/s11998-009-9217-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9217-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9766
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 4 (07/2010) . - p. 441-448[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012362 - Périodique Bibliothèque principale Documentaires Disponible Effect of preweathering, surface roughness, and wood species on the performance of paint and stains / R. Sam Williams in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 828 (01/1994)
PermalinkEffects of adding TiO2 nanoparticles to a water-based varnish for wood applied to nine tropical woods of Costa Rica exposed to natural and accelerated weathering / Róger Moya in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
PermalinkElectron beam curing - Emerging platform for wood coatings / Yogesh B. More in PAINTINDIA, Vol. LXX, N° 3 (03/2020)
PermalinkPermalinkEnhancing exterior performance of clear coatings through photostabilization of wooden surfaces. Part 1 : treatment and characterization in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)
PermalinkEnhancing the properties of floor coatings with mineral fibres / C. W. Mertens in SURFACE COATINGS INTERNATIONAL, Vol. 92, 1 (02/2009)
PermalinkEnhancing weathering durability of pre-protected and unprotected wood by using bark extracts as natural UV absorbers in waterborne acrylic coating / Özlem Özgenç in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)
PermalinkExperimental and theoretical behavior of exterior wood coatings subjected to artificial weathering / Jan van den Bulcke in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)
PermalinkExterior wood coatings. Part-1 : performance of semitransparent stains on preservative-treated wood in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)
PermalinkExterior wood coatings. Part-2 : modeling correlation between coating properties and their weathering performance / Mojgan Nejad in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)
PermalinkFighting against stains in coatings : Tannin & stain blockers additives for waterborne systems from Tennants in SURFACE COATINGS INTERNATIONAL, Vol. 103.6 (11-12/2020)
PermalinkFine-tuning coating surface control through the use of modified siloxanes / Ingrid K. Meier in COATINGS TECH, Vol. 17, N° 3 (03/2020)
PermalinkFire-proof silicate coatings with magnesium-containing fire retardant / O. Kazmina in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)
PermalinkPermalinkFormulation 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)
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