Preparation and characterization of anticorrosion polyurethane paints and coatings based on novel Zn-free phosphates / Krzysztof Kowalczyk in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 1 (01/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 1 (01/2015) . - p. 153-165 Titre : Preparation and characterization of anticorrosion polyurethane paints and coatings based on novel Zn-free phosphates Type de document : texte imprimé Auteurs : Krzysztof Kowalczyk, Auteur ; Kinga Luczka, Auteur ; Barbara Grzmil, Auteur Année de publication : 2015 Article en page(s) : p. 153-165 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique. L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1. C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple. Anticorrosifs Anticorrosion Brillance (optique) Charges (matériaux) Essais accélérés (technologie) Métaux -- Revêtements protecteurs Phosphate d'aluminium Le phosphate d'ammonium est un composé chimique de formule (NH4)3PO4. Il s'agit d'un sel d'ammoniac NH3 et d'acide phosphorique H3PO4, constitué de cations ammonium NH4+ et d'anions phosphate PO43–. Il se forme à l'état de poudre cristalline lorsqu'on mélange deux solutions concentrées d'ammoniac et d'acide phosphorique : 3 NH3 + H3PO4 → (NH4)3PO4. Il est soluble dans l'eau, et la solution aqueuse de phosphate d'ammonium libère de l'ammoniac lorsqu'on la chauffe. Les autres sels d'ammoniac et d'acide phosphorique existent également : phosphate de diammonium (NH4)2HPO4 et phosphate de monoammonium NH4H2PO4. Ils peuvent être convertis l'un en l'autre avec le phosphate d'ammonium en ajoutant davantage d'ammoniac ou d'acide phosphorique selon les besoins. Le phosphate d'ammonium est utilisé dans certains engrais comme source d'azote. Il est également employé comme retardateur de flamme dans la composition des thermoplastiques. Phosphate d'ammonium Phosphate de zinc Polyuréthanes Revêtement en phase solvant:Peinture en phase solvant Revêtements bi-composant:Peinture bi-composant Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Novel aluminum ammonium phosphates (AAP) were tested as anticorrosion fillers in two-component solventborne polyurethane paints. Their properties were compared with microsized aluminum zinc phosphate (AZP) as well as with nanosized (nAP) and microsized (AP) aluminum phosphates. Generally, coating compositions containing AAP exhibited similar or slightly higher viscosity than the systems with AZP and AP. Moreover, cured polyurethane coats with AAP reached higher gloss and better adhesion to a steel substrate. The results of salt spray tests (2500 h) showed that anticorrosive properties of coats containing 10 wt% of AAP were similar or better than those noted for coats with 15.6 wt% of AZP or 13.7 wt% of AP. Electrochemical impedance spectroscopic tests revealed markedly higher barrier properties of coats with AAP in comparison to an AP-based sample. Note de contenu : - MATERIALS AND METHODS : Commercial materials - Phosphate fillers preparation - Paints preparation - Samples preparation - TEST METHODS : Characterization of phosphate pigments - Characterization of coating compositions and cured paints - RESULTS AND DISCUSSION : Phosphate fillers - Polyurethane paints and coats with phosphate fillers DOI : 10.1007/s11998-014-9612-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9612-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23214 [article]

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Preparation and physical properties of polyurethane flame retardant coatings using phosphorus-containing lactone modified polyesters / Hong-Soo Park in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 899 (12/1999)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 71, N° 899 (12/1999) . - p. 59-65 Titre : Preparation and physical properties of polyurethane flame retardant coatings using phosphorus-containing lactone modified polyesters Type de document : texte imprimé Auteurs : Hong-Soo Park, Auteur ; Soon-Yong Kwon, Auteur ; Kum-Jong Seo, Auteur ; Wan-Bin Im, Auteur ; Jong-Pyo Wu, Auteur ; Myong Ji, Auteur ; Seong-Kil Kim, Auteur ; Sam Hwa, Auteur Année de publication : 1999 Article en page(s) : p. 59-65 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Lactones Phosphore Polyesters Polyisocyanates Polymères ignifuges Polyuréthanes Revêtements bi-composant Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : Two-component polyurethane flame retardant coatings were prepared using phosphorus-containing lactone modified polyesters (PLMPs) and polyisocyanate. PLMPs were synthesized by polycondensation of dimethyl phenylphosphonate, a flame retardant component with polycaprolactone, adipic acid, and trimethylolpropane. PLMPs were prepared with dimethyl phenylphosphonate content from 10 to 20 wt%. It was found that various physical properties of these new flame retardant coatings were comparable to non-flame retardant coatings. The flammability of coatings depends strongly on the dimethyl phenylphosphonate content in PLMP. Coatings with 20 wt% dimethyl phenylphosphonate content did not burn in the vertical burning test. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of lactone modified polyester - Synthesis of phosphorus-containing lactone modified polyesters - Instrumental analyses - Preparation of polyurethane coatings - Physical properties of the coatings - Flame retardancy tests - Surface morphology - RESULTS AND DISCUSSION : Identification of lactone modified polyester - Identification of phosphorus-containing lactone modified polyester - Rheological behavior of phosphorus-containing lactone modified polyester - Thermal behavior of phosophorus-containing lactone modified polyesters - Physical properties of coatings - Flame retardancy of coatings Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17948 [article]

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Preparation and stability of aqueous acrylic polyol dispersions for two-component waterborne polyurethane / Li Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 1 (01/2017) . - p. 215-223 Titre : Preparation and stability of aqueous acrylic polyol dispersions for two-component waterborne polyurethane Type de document : texte imprimé Auteurs : Li Wang, Auteur ; Fei Xu, Auteur ; Hongxin Li, Auteur ; Yangyan Liu, Auteur ; Yali Liu, Auteur Année de publication : 2017 Article en page(s) : p. 215-223 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Polyacryliques Polyols Polyuréthanes Revêtements bi-composant:Peinture bi-composant Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, aqueous acrylic polyol dispersions with high stability for a two-component waterborne polyurethane were prepared. To improve the stability of acrylic dispersions, the influence of the acrylic acid (AA) addition method, neutralization, water addition rate during the dilution process, and dispersion equipment on the stability of the aqueous acrylic polyol dispersion was studied using dynamic light scattering and a thermal storage experiment. The acrylic resins’ structure was examined using Fourier transform infrared spectra, and the water resistance of the resultant films was investigated by electrochemical measurements and a water-swelling experiment. The dispersions prepared by two-step AA addition exhibited better particle size distribution, viscosity, and thermal storage compared with those prepared by one-step AA addition. Furthermore, the acrylic resin prepared by two-step AA addition was observed to possess a higher acid value. The corrosion currents of films based on dispersions prepared by two-step AA addition decreased to a smaller extent after 24 h of immersion in water. The dispersions afforded smaller particles when larger amounts of neutralizer and slower water addition rates were used. The dispersions prepared using a sawtooth disk dispersion machine displayed better performance than that prepared using a homogenizer dispersion machine. Note de contenu : - EXPERIMENTAL : Materials - Preparation of acrylic resin - Preparation of the aqueous acrylic dispersion - Preparation of coating films - CHARACTERIZATION : Fourier transform infrared (FTIR) spectroscopy - Acid value - Viscosity - dispersion size - Dispersion solid content - Zeta potential measurement - Electrochemical measurements - Water-swelling measurement RESULTS AND DISCUSSION : Effect of neutralization on stability - Effect of means of AA addition on stability - Effect of water addition rate on stability - Effect of dispersion equipment on stability - Effect of dilution En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9845-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27803 [article]

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Preparation, characterization, and analysis of anti-corrosion subsea coatings / X. X. Duan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 4 (07/2017) . - p. 823-827 Titre : Preparation, characterization, and analysis of anti-corrosion subsea coatings Type de document : texte imprimé Auteurs : X. X. Duan, Auteur ; T. Parris, Auteur ; Algy Kazlauciunas, Auteur ; J. Guthrie, Auteur Année de publication : 2017 Article en page(s) : p. 823-827 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Epoxydes Revêtement -- Séchage:Peinture -- Séchage Revêtements bi-composant:Peinture bi-composant Index. décimale : 667.9 Revêtements et enduits Résumé : Within this work, a two-component anti-corrosive epoxy primer formulation, Sigmacoverâ„¢ 280, and its resulting films were prepared and evaluated. The optimum coating time following formulation was extended by adding an appropriate amount of solvent as a controlled thinner. The draw down coating method was identified to be a reproducible and a robust paint film deposition process. Gravimetric analysis, Differential scanning calorimetry (DSC), and through-dry testing were used in the characterization of the curing and drying behavior of each applied primer film. The shortest time for achieving a through-dry state occurred with thinner films cured at the higher temperature, as seen in the film curing/drying. The minimum covercoating time and full cure time of the paint films, cured under the different conditions, were evaluated by means of its dryness, hardness, and curing state studies/characterization. DOI : 10.1007/s11998-016-9889-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9889-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28924 [article]

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Preparation of PVA/PU/PUA microcapsules and application in self-healing two-component waterborne polyurethane coatings / Xinmeng Xu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 977-988 Titre : Preparation of PVA/PU/PUA microcapsules and application in self-healing two-component waterborne polyurethane coatings Type de document : texte imprimé Auteurs : Xinmeng Xu, Auteur ; Zhongqun Zhou, Auteur ; Liangrong Qin, Auteur Année de publication : 2022 Article en page(s) : p. 977-988 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Microcapsules Polyacétate de vinyle Polymères -- Synthèse Polyurée Polyuréthanes Revêtement autoréparant Revêtements bi-composant Revêtements en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : It is difficult to produce coatings that have good mechanical and self-healing properties. In this study, polyvinyl alcohol/polyurethane/polyurea (PVA/PU/PUA) microcapsules (MCs) loaded with isophorone diisocyanate (IPDI) as core materials were first prepared by interfacial polymerization in an oil-in-water emulsion using different PVA as an emulsifier. The MCs were then uniformly dispersed in the matrix. Optical microscopy and scanning electron microscopy revealed that the size of MCs decreased as alcoholysis and polymerization degree of PVA increased. Thermogravimetric analysis showed that the MCs prepared with the high polymerization or alcoholysis degree of PVA revealed outstanding thermal stability, and the initial decomposition temperature increased by approximately 100°C compared with IPDI. Furthermore, the self-healing performance of the two-component waterborne polyurethane (2K WPU) coating system containing MCs was investigated. The 2K WPU coatings with 9 wt% PVA/PU/PUA MCs exhibited excellent self-healing, mechanical properties, and corrosion resistance, and indicated a high potential for smart coating. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Materials - Synthesis of PVA solution - Synthesis of MCs - Preparation of self-healing 2K - WPU coatings - Characterization - RESULTS AND DISCUSSION : Analysis and characterization of MCs - Self-healing performance of 2K WPU - Table 1 : Thermal weight loss data of MCs and capsule shells - Table 2 : Film performance of 2K WPU coatings loaded with different types of MCs - Table 3 : Coating performance of 2K WPU with different MCs content DOI : https://doi.org/10.1007/s11998-021-00577-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00577-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38091 [article]

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Preparation, properties and application of waterborne hyydroxyl-functional polyurethane/acrylic emulsions in two-component coatings / Guozhang Ma in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)  

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A question of reinforcement / Mesut Eren in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2013)  

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Quicker crosslinking / Jan Klesing in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2017)  

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Radical polyestérifications for 2K systems / Denis Heymans in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2012)  

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Recent advances in anti-fouling coating technology / Ramesh Tripathi in PAINTINDIA, Vol. LXVI, N° 8 (08/2016)  

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Reduce downtime and secure profitability in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 14, N° 2 (2021)

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Research progress of waterborne plastic coatings / Tingting Xu in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4620 (05/2016)  

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Rheological studies of two component high build epoxy and polyurethane based high performance coatings / Ajit Deka in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 3 (05/2013)  

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Robots reading recipes / Madeleine Hummel in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2019)  

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Robust surfaces for kitchen slicers / Christian Krüger in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 3 (2015)

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Self-healing primers extend protection / Subramanyam V. Kasisomayajula in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2018)  

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Shipyard strategies / Malte Homann in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/2008 (11/2008)  

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Silica encapsulated tannic acid containing pH triggered smart coating / Debabrata Pal in PAINTINDIA, Vol. LXIX, N° 6 (06/2019)  

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Smart care solution / Harish Agrawal in PAINTINDIA, Vol. LXXII, N° 5 (05/2022)  

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Solvent-free rigid 2K polyurethanes for protective coatings / Matthias Wintermantel in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4592 (01/2014)  

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