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Confocal Raman microscopy study of the melamine distribution in polyester–melamine coil coating / Wanrui Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
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Titre : Confocal Raman microscopy study of the melamine distribution in polyester–melamine coil coating Type de document : texte imprimé Auteurs : Wanrui Zhang, Auteur ; Chris Lowe, Auteur ; Ray Smith, Auteur Année de publication : 2009 Article en page(s) : p. 315-328 Note générale : Bibliogr. Langues : Américain (ame) Tags : Coil coating Melamine enrichment Confocal Raman microscopyhttp://download.springer.com/static/pdf/925/art%253A10.1007%252Fs11998-008-9136-2.pdf?originUrl=http%3A%2F%2Flink.springer.com%2Farticle%2F10.1007%2Fs11998-008-9136-2&token2=exp=1464962484~acl=%2Fstatic%2Fpdf%2F925%2Fart%25253A10.1007%25252Fs11998-008-913 Index. décimale : 667.9 Revêtements et enduits Résumé : Hexamethoxymethylmelamine, a common crosslinker used in combination with polyester resins to prepare thermosetting coatings, can self-condense during curing and in theory build up regions with high crosslink density (melamine enrichment). This distribution may affect such properties as the "local" glass transition temperature and structural heterogeneity and thereby modify formability, stain resistance, and weatherability. The self-condensation regions have not previously been observed in detail so their distribution in the film is unclear. Confocal Raman microscopy (CRM) has been used to characterize the melamine distribution in three polyester–melamine paint systems: one clear and two pigmented coil coatings. Both the surface mapping and depth profiling features of CRM were used to perform a 3D analysis. The depth profiling of the clear coating was performed in a nondestructive way, but due to the opaque nature of the pigments, cross sections of the pigmented coatings were prepared in order to facilitate the analysis of the melamine distribution through the film thickness. Melamine-enriched zones were found on the surfaces of all three samples. They appeared to be approximately spherical with diameters of around 5 µm. It was also observed from the cross sections that the melamine-enriched zones appeared as "particles" distributed randomly through the coating. The Raman spectra collected at these regions show significantly higher triazine ring band intensity. All of these findings confirm the hypotheses constructed over the past 20–30 years. DOI : 10.1007/s11998-008-9136-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9136-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6112
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 315-328[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible Forces generated by web peeling for printing and coating applications / Harrison Gates in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 5 (09/2015)
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Titre : Forces generated by web peeling for printing and coating applications Type de document : texte imprimé Auteurs : Harrison Gates, Auteur ; Douglas W. Bousfield, Auteur Année de publication : 2015 Article en page(s) : p. 899-913 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Pelage
RevêtementsTags : 'Tensioned web' Peeling Coating Printing 'z-Directional forces' Index. décimale : 667.9 Revêtements et enduits Résumé : The tensile forces that act on a web in printing and coating applications are important in situations where the web may delaminate or break. A model is proposed that uses lubrication expressions to describe the fluid flow in the thin fluid layer combined with a force balance on the web to describe the peeling event. A novel experimental method is described that measures the forces to separate a tensioned web from a surface with a viscous fluid between them. Forces are measured for various parameters such as viscosity, web tension, separation velocity, fluid volume, and fluid geometry. Dimensionless expressions are developed to correlate experimental results. Web deformation and forces are found to be influenced by a thin air film between web and bottom plate. These initial forces are found to be larger than later peeling forces unless something is done to allow air to flow between the web and the lower plate. Low web tension and stiffness are found to reduce the maximum force. The model predicts the measured forces within the expected accuracies. However, the model overpredicts the forces for large patch areas and thin films; this is likely caused by a cavitation mechanism or be three-dimensional flows for these large patch areas. Simplified expressions are generated to correlate the peeling forces for a wide range of experimental parameters. Note de contenu : - Model development
- Numerical methods
- Model predictonsDOI : 10.1007/s11998-015-9731-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9731-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24690
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Code-barres Cote Support Localisation Section Disponibilité 17467 - Périodique Bibliothèque principale Documentaires Disponible Performance of coil coating primers / C. Lowe in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 909 (10/2000)
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Titre : Performance of coil coating primers : A comparison of three complementary test methods Type de document : texte imprimé Auteurs : C. Lowe, Auteur ; L. Devos, Auteur ; V. Lavaste, Auteur ; G. C. Simmons, Auteur ; J. F. Watts, Auteur Année de publication : 2000 Article en page(s) : p. 135-144 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture primaire Coil coating Métal Adhérence Méthode essai Etude comparative expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : The durability of a coil-coated metal sheet is reliant on good adhesion throughout its lifetime. To quantify this parameter, MEK rub resistance and Erichsen slow draw test methods, as well as the recently developed NMP test, have been used. Although it is shown that this new approach has a restricted application to highly crosslinked systems, it appears to be complementary to the others allowing the comparison of the levels of adhesion of two different paint formulations. It is shown that adhesion is enhanced by longer cure times for thermally cured systems, low UV dosage for radiation cured systems, and by the introduction of an anticorrosive pigment for both systems. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5784
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Code-barres Cote Support Localisation Section Disponibilité 001214 - Périodique Bibliothèque principale Documentaires Disponible 001215 - Périodique Bibliothèque principale Documentaires Disponible Two pack ambient cured polyurethane coating through modified and blend of polyols from oleo resinous sustainable resources / J. M. Shukla in PAINTINDIA, Vol. LVIII, N° 12 (12/2008)
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Titre : Two pack ambient cured polyurethane coating through modified and blend of polyols from oleo resinous sustainable resources Type de document : texte imprimé Auteurs : J. M. Shukla, Auteur ; N. K. Patel, Auteur ; M. R. Patel, Auteur ; K. H. Patel, Auteur Année de publication : 2008 Article en page(s) : p. 85-104 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Two pack coating Polyuréthane Sustainable resources Index. décimale : 667.9 Revêtements et enduits Résumé : Polyuréthanes (PU) touch to our lives in unexpected way through the verstile class of thermosetting polymers and largely used in high performance surface coating and paints. It is also true that our absolute reliance is on naphta product as they are th only source of the chemical required, depletes very rapidly which inturn forces for the search of substitute. In view of this we planned our work by combining vegetable oil fatty acids and synthetic epoxy resin to modify and blend of polyols to produce polyurethane useful for surface coating. The purpose of such combination was to improve the mechanical properties such as hardness, impact strength, and flexibility of coated film. Polyurethane for surface coatings prepared from above modified and blend of polyols with different isocyanate adduct in different ratio were characterized by IR spectroscopy, thermo gravimetric method, end group analysis and mechanical methods to determine scratch, pencil, impact hardness, flexibility and chemical resistance to acid, alkali and salt. This study shows that the material holds promise for use as an effective anticorrosive coating. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6937
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Code-barres Cote Support Localisation Section Disponibilité 011352 - Périodique Bibliothèque principale Documentaires Disponible Blends of CNSL phenol-formaldehyde-ketonic resin : a cost effective endeavour to enhance performance of conventional CNSL coatings / Vilas D. Athawale in PAINTINDIA, Vol. LVIII, N° 12 (12/2008)
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Titre : Blends of CNSL phenol-formaldehyde-ketonic resin : a cost effective endeavour to enhance performance of conventional CNSL coatings Type de document : texte imprimé Auteurs : Vilas D. Athawale, Auteur ; Narendra J. Shetty, Auteur Année de publication : 2008 Article en page(s) : p. 69-78 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Blend CNSL Coating properties Ketonic (Cyclohexanone formaldehyde) resin Index. décimale : 667.9 Revêtements et enduits Résumé : Cashew nut shell liquid (CNSL) and phenol formaldehyde were synthesised in the laboratory and subsequently blended with ketonic (cyclohexanone formaldehyde) resin. The physico-mechanical and performance properties such as drying time, hardness, adhesion, flexibility, gloss, skinning tendency, corrosion, impact resistance and chemical resistance were examined at various compositions of the modified CNSL resin and ketonic resin blend.
The 50:50 percent (w/w) of CNSL-phenol-formaldehyde - ketonic (cyclohexanone formaldehyde) resin blend exhibited enhanced coating properties as compared to any other proportions of the blend.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6935
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Code-barres Cote Support Localisation Section Disponibilité 011352 - Périodique Bibliothèque principale Documentaires Disponible Cracking analysis of HVOF coatings under Vickers indentation / A. P. Buang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)
PermalinkPolymer heterogeneity in waterborne coatings / Ad Overbeek in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 1 (01/2010)
PermalinkSeed oil based polyester polyols for coatings / John Argyropoulos in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)
PermalinkThe effect of difunctional acids on the performance properties of polyurethane coatings / Shailja Awasthi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
PermalinkHindered amine light stabilizers in pigmented coatings / Christian Schaller in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
PermalinkApplication of a factorial design to study a chromate-conversion process / S. Wery in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 1 (01/2010)
PermalinkCombinatorial materials research applied to the development of new surface coatings XI : a workflow for the development of hybrid organic–inorganic coatings / Bret J. Chisholm in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 1 (01/2010)
PermalinkDesign and characteristic analysis of a new nozzle for preparing microencapsulated particles by RESS / Ya-qing Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
PermalinkDevelopment of a modified test cell for AC impedance testing of coated Al fins / A. Husain in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 3 (09/2007)
PermalinkDimethyl secondary amine chain extenders : a conceptual approach to in situ generation of advanced epoxy resins for rapid-cure, low-VOC coatings / Frederick H. Walker in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 3 (09/2009)
PermalinkElectrokinetic / Olga A. Kulikova in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)
PermalinkStudy of polyester-based coil coatings by using thermal analysis methods / M. Korhonen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 937 (02/2003)
PermalinkUse of Taguchi screening techniques for gloss optimization of applicance powder coatings / Amit Amembal in PAINTINDIA, Vol. LIX, N° 2 (02/2009)
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