Cellulose nanocrystal (CNC)-based nanocomposites for UV curable high-solid coating systems / Alireza Kaboorani in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1137-1145 Titre : Cellulose nanocrystal (CNC)-based nanocomposites for UV curable high-solid coating systems Type de document : texte imprimé Auteurs : Alireza Kaboorani, Auteur ; Nicolas Auclair, Auteur ; Bernard Riedl, Auteur ; Omid Hosseinaei, Auteur ; Siqun Wang, Auteur Année de publication : 2017 Article en page(s) : p. 1137-1145 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Vernis Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Copolymère époxy acrylate Cristaux Haut extrait sec Hydrophobie Nanoindentation Nanoparticules Revêtements -- Séchage sous rayonnement ultraviolet Revêtements intérieurs Rugosité Stabilité thermique Statistique Vernis -- Propriétés mécaniques Index. décimale : 667.9 Revêtements et enduits Résumé : Demand for durable clear wood coatings is on the rise. Cellulose nanocrystals (CNC) constitute an organic nanomaterial widely studied in polymer composites for its reinforcing effect. In this study, CNC was used to enhance the performance of a UV curable high-solid content coating system intended for indoor environments. The CNC surface was modified by a cationic surfactant since the coating system was hydrophobic resin-based requiring hydrophobic nanomaterial reinforcement. Modified CNC was mixed with the coating system using a high-speed mixer and the ultrasonication technique. Mechanical, thermal and morphological properties and curing behavior of the newly developed UV-curing coatings were assessed. Inclusion of CNC in the coating increased the mechanical properties (hardness and reduced modulus) of the coating system to a large extent. Thermal stability of the coating system was also improved by CNC addition. The CNC did not affect the curing behavior of the coating, in contrast to most inorganic nanomaterials. The CNC dispersed well in the matrix at 1% loading. Results of this study show that CNC can be used successfully with high-solid content coating systems. Note de contenu : - EXPERIMENTAL : Materials - METHODS : CNC surface modification - Preparation of UV-curable formulations - CHARACTERIZATIONS : Thermal stability - Photodifferential scanning calorimetry (photo-DSC) - Atomic force microscopy (AFM) - Nanoindentation - Statistical analyses - RESULTS : Thermal stability - Surface roughness - Curing behavior - Mechanical properties DOI : 10.1007/s11998-017-9929-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9929-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29148 [article]

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Cutting ketoximes / Jörg Horakh in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2015)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2015) . - p. 34-37 Titre : Cutting ketoximes : Encapsulated driers minimise skinning of air-drying paints Type de document : texte imprimé Auteurs : Jörg Horakh, Auteur ; Hugh Gibbs, Auteur ; Franjo Gol, Auteur ; Gaby Kiepe, Auteur Année de publication : 2015 Article en page(s) : p. 34-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cétoxime Encapsulation Essais (technologie) Polyalkydes Revêtement -- Séchage:Peinture -- Séchage Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Siccatifs Un siccatif est une substance qui joue un rôle de catalyseur en accélérant le séchage ou durcissement (polymérisation) d'un matériau tel une huile ou une peinture à base d'huile (pour le bâtiment ou les artistes). solvants Stabilité thermique Vernis Vernis -- Additifs Vernis -- Propriétés mécaniques Index. décimale : 667.9 Revêtements et enduits Résumé : Air-drying alkyds require anti-skinning agents to prevent premature curing in the can. There is regulatory pressure in Europe to reduce exposure to these agents to levels which are difficult to meet. An iron drier encapsulated so that it is protected from oxygen during storage but released during application produces minimal skinning. Good to know that they don't reduce the coatings performance. Note de contenu : - Anti-skinning additives face regulatory challenges - Regulations may require replacement of cobalt driers - Drier encapsulation can resolve skinning problems - Application tests summarised - Drying speed and skin formation tests - Encapsulation does not affect hardness or yellowing - Mechanical and thermal stability are both good - Polar solvents can however disrupt encapsulation - Benefits and limitations summarised En ligne : https://drive.google.com/file/d/1DqvBO5onR2wPtWGBrvpV7AF5BZUNnMso/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24526 [article]

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Durable water-borne wood coatings / Peter Greenwood in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2018)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2018) . - p. 40-47 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 -- Additifs Index. 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 formulations En ligne : https://drive.google.com/file/d/1QwITcDE_hsQMUnA0CAZXfo0ux5JQlnX5/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30838 [article]

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Effects of different dicarboxylic acid on the UV-curable urethane resins made from palm fatty acid distillate / Kim Teck Teo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 6 (11/2020) . - p. 1571-1585 Titre : Effects of different dicarboxylic acid on the UV-curable urethane resins made from palm fatty acid distillate Type de document : texte imprimé Auteurs : Kim Teck Teo, Auteur ; Aziz Hassan, Auteur ; Seng Neon Gan, Auteur Année de publication : 2020 Article en page(s) : p. 1571-1585 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Brillance (optique) Caractérisation Copolymère uréthane acrylique Essai de dureté Essais accélérés (technologie) Essais de brouillard salin Essais dynamiques Métaux -- Revêtements protecteurs Poids moléculaires Résistance à la fissuration Résistance au chocs Résistance chimique Revêtements -- Propriétés mécaniques Revêtements -- Séchage sous rayonnement ultraviolet Revêtements organiques Transition vitreuse Vernis -- Propriétés mécaniques Index. décimale : 667.9 Revêtements et enduits Résumé : A series of four polyol macromers with similar hydroxyl number was prepared by reacting palm fatty acid distillate with neopentaglycol, pentaerythritol, and separate equimolar amounts of isophthalic acid (IPA), terephthalic acid (TPA), phthalic anhydride (PA), and adipic acid (AA). Each macromer was then copolymerized with 2-hydroxylethyl acrylate (2-HEA) and toluene diisocyanate to produce the UV curable resins labeled as UA-IPA, UA-TPA, UA-PA, and UA-AA, respectively. The glass transition temperature (Tg), pendulum hardness, and adhesion properties of the cured films were studied. In general, all the resins produced coatings with high gloss and good adhesion. When accelerated weathering tests were carried out, films of UA-TPA could withstand UVA exposure up to 1500 h. When subjected to methyl ethyl ketone double rub test, cured films of UA-IPA and UA-TPA could withstand the highest double rubs at 90 times, followed by UA-PA and UA-AA at 45 and 15 times, respectively. Under salt spray corrosion test for 720 h, cured films showed good corrosion resistance with no observable blistering, except for UA-AA that showed slight blistering. Excellent water resistance was achieved by all cured films with good adhesion and minimal gloss reduction. Note de contenu : - EXPERIMENTS : Materials - Synthesis of hydroxyl terminated macromer - Urethane acrylate resins (UA) - Clearcoat formulation - Application of UA clearcoat on metal panel - FTIR analysis - Molecular weight measurement - Glass transition measurement - Pendulum hardness - Acid value and isocyanate value - Hydroxyl number - Adhesion performance - Pencil hardness - Gloss measurement - Flexibility of coating by T-bend test - Resistance of cracking by impact deformation - Cured film durability by QUV-A accelerated weathering test - Resistance of coating to MEK - Water resistance test - Monitoring of UV curing - UV-curable UA resin in metal coating application - RESULTS AND DISCUSSION : Synthesis of macromer - Synthesis of UA-IPA, UA-TPA, UA-PA and UA-AA - UV Curing of resins - Change in Tg during UV curing - Pendulum hardness analysis of cured film - Physical and mechanical performance of UV cured film in metal coating - Film flexibility by T-bend test - Cracking resistance of the UV cured film by impact deformation - Solvent resistance of the UV cured film - Durability of UV cured film - Performance of water resistance of the UV cured film DOI : https://doi.org/10.1007/s11998-020-00379-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00379-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34961 [article]

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Flexible formulation / Eva Tejada in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2014)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2014) . - p. 22-28 Titre : Flexible formulation : Self-crosslinking acrylic for 1K and 2K waterborne woodcoatings Type de document : texte imprimé Auteurs : Eva Tejada, Auteur ; Maria Almató, Auteur ; Hans Grablowitz, Auteur Année de publication : 2014 Article en page(s) : p. 22-28 Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs Polyacrylates Polyacryliques Résistance chimique Réticulation (polymérisation) Sols -- Revêtements protecteurs Vernis Vernis -- Propriétés mécaniques Vernis bi-composant Vernis en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Different acrylic dispersions for wood coatings have been compared in both 1K and 2K systems. A low hydroxyl content self-crosslinking polyacrylate dispersion has been developed that allows both 1K and 2K coatings to be formulated for many different applications, including parquet coatings and exterior coatings, alone or combined with a PUD. Note de contenu : - Types of self-crosslinking resins - Two-pack curing chemistries summarised - Five acrylic dispersion polymers compared - Crosslinking aids performance in single-pack coatings - Results compared in two-pack furniture coatings - New resin structure offers flexible formulation - A single resin for many applications En ligne : https://drive.google.com/file/d/1ER4PCY2iYw1esXkziYqkX9fpmQfFS4yB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21013 [article]

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A fluorine–silicone acrylic resin modified with UV-absorbing monomers and a free radical scavenger / Huibin Lei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 4 (07/2018)  

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Greening floor coatings / Derrick R. Twene in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2014)  

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A hard-wearing solution / John Florio in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2017)  

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Mechanical properties of UV-waterborne varnishes reinforced by cellulose nanocrystals / Vahe Vardanyan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)  

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Modified acrylic core-shell / Alann de Oliveira Piagentini Bragatto in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4619 (04/2016)  

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Nail polish : a water-based alternative / Kora Brandenburg in SOFW JOURNAL, Vol. 142, N° 12 (12/2016)  

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NISO goes water-borne / Armin Temel in EUROPEAN COATINGS JOURNAL (ECJ), N° 11 (11/2019)  

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Phase separation in Michael addition curable coatings to enhance flexibility and adhesion robustness / Bart A. J. Noordover in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

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Polyamides show performance gains / Nina Musche in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2017)  

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Scaling behavior in the scratching of automotive clearcoats / Christopher M. Seubert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 1 (03/2007)  

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Scratch resistance of automobile clearcoats : chemistry and characterization on the micro- and nanoscale / M. Kutschera in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 2 (04/2006)  

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Sur les mécanismes de rayure des vernis de finition automobile / Patricia Bertrand-Lambotte / 2001

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Synthesis and properties of multiarm star hydroxyl-terminated polyesters for two-component polyurethane coatings / Shan Huang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 3 (05/2017)  

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The effect of thermal radical initiator derived from O-imino-isourea on thermal curing characteristics and properties of automotive clearcoats / Ji Won Hwang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 1 (01/2015)  

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Wood clearcoats - Beautiful & tough / Heike Semmler in EUROPEAN COATINGS JOURNAL (ECJ), (06/2023)  

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