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Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates / Glen Merfeld in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
[article]
Titre : Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates Type de document : texte imprimé Auteurs : Glen Merfeld, Auteur ; Mike Spicer, Auteur ; Debora Meredith, Auteur ; Steve Finley, Auteur ; Greg Garrett, Auteur ; Kevin Kovaleski, Auteur ; Mark Smith, Auteur ; Ken Gray, Auteur ; Ron Singh Warner, Auteur ; Pat Irwin, Auteur ; Joe Suriano, Auteur ; Chris Molaison, Auteur ; A. Ersin Acar, Auteur ; Rainer Koeniger, Auteur ; Steve Mordhorst, Auteur ; Tom Naguy, Auteur Année de publication : 2005 Article en page(s) : p. 661-668 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude expérimentale Inhibiteur corrosion Catalyseur Effet concentration Cinétique Réaction catalytique Durcissement(matière plastique) Ester polymère Aluminium Matériau revêtement Peinture poudre anticorrosion Index. décimale : 667.9 Revêtements et enduits Résumé : Commercial low temperature cure powder coatings, including candidates representative of all the major coating chemistries, were evaluated. Nearly all failed to adequately react at a cure schedule of 120°C for 30 min, and none, even when prepared at their manufacturer's lowest recommended cure conditions, met the stringent performance needs for temperature-sensitive military applications. Initial research is presented toward developing low temperature cure powder coatings that simultaneously meet all performance requirements at this target cure schedule. Using commercial resins, corrosion inhibitors, and catalysts, this research effort has closed gaps in low temperature cure coating performance and has helped to identify critical deficiencies. This study establishes direction for future developments in new resin and catalyst technologies. DOI : 10.1007/BF02774595 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774595.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3791
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 8 (10/2005) . - p. 661-668[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible Microstructure and morphology of amine-cured epoxy coatings before and after outdoor exposures - an AFM study / Xiaohong Gu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)
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Titre : Microstructure and morphology of amine-cured epoxy coatings before and after outdoor exposures - an AFM study Type de document : texte imprimé Auteurs : Xiaohong Gu, Auteur ; Y. C. Jean, Auteur ; Derek L. Ho, Auteur ; Jonathan W. Martin, Auteur ; Eric Byrd, Auteur ; Li-Piin Sung, Auteur ; Aziz Rezig, Auteur ; Joan Jasmin, Auteur ; Bouchra Kidah, Auteur ; David Martin, Auteur ; Mounina Oudina, Auteur ; Tinh Nguyen, Auteur Année de publication : 2005 Article en page(s) : p. 547-556 Note générale : Bibliogr. Langues : Américain (ame) Tags : Dégradation photooxydante photochimique Propriété chimique Etude expérimentale Diffusion neutron centrale Microscopie force atomique Résistance intempérie Méthode analyse Durabilité Epoxyde résine Structure surface Temps exposition Relation mise en oeuvre propriété Amine Durcissement(matière plastique) Vieillissement produit Matériau revêtement Morphologie Microstructure Index. décimale : 667.9 Revêtements et enduits Résumé : Atomic force microscopy (AFM) has been used to study the morphology and microstructure of an amine-cured epoxy before and after outdoor exposure. Measurements were made from samples prepared in an essentially CO2-free, H2O-free glove box and from samples prepared in ambient conditions. For those prepared in a CO2-free glove box, AFM imaging was conducted on (1) an unexposed air/coating surface, (2) an unexposed coating bulk, (3) an unexposed coating/substrate interface, and (4) a field exposed air/coating surface. For samples prepared in ambient conditions, only the unexposed air/coating surface was investigated. The same regions of the exposed samples were scanned periodically by the AFM to monitor changes in the surface morphology of the coating as UV exposure progressed. Small angle neutron scattering and Fourier transfonn infrared spectroscopy (FTIR) studies were performed to verify the microstructure and to follow chemical changes during outdoor exposure, respectively. The results have shown that amine blushing, which occurs only under ambient conditions, had a significant effect on the surface morphology and microstructure of the epoxy. The surface morphology of the samples prepared under CO2-free, dry conditions was generally smooth and homogeneous. However, the interface and the bulk samples clearly revealed a two-phase structure consisting of bright nodular domains and dark interstitial regions, indicating an inhomogeneous microstructure. Such heterogeneous structure of the bulk was in good agreement with results obtained by small angle neutron scattering of unexposed samples and by AFM phase imaging of the degraded sample surface. The relationship between submicrometer physical changes and molecular chemical degradation is discussed. DOI : 10.1007/s11998-005-0014-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0014-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3802
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Code-barres Cote Support Localisation Section Disponibilité 002327 - Périodique Bibliothèque principale Documentaires Disponible Novel polyurethane coating technology through glycidyl carbamate chemistry / Peter A. Edwards in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)
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Titre : Novel polyurethane coating technology through glycidyl carbamate chemistry Type de document : texte imprimé Auteurs : Peter A. Edwards, Auteur ; Dean C. Webster, Auteur ; Grant Striemer, Auteur Année de publication : 2005 Article en page(s) : p. 517-527 Note générale : Bibliogr. Langues : Américain (ame) Tags : Glycidol polymère Propriété chimique Etude expérimentale thermique Relation mise en oeuvre propriété mécanique Mécanisme réaction Cinétique Résistance choc Dureté solvant Triamine Diamine Durcissement(matière plastique) Epoxyde résine Réactivité Matériau revêtement Carbamate organique Index. décimale : 667.9 Revêtements et enduits Résumé : Glycidyl carbamate chemistry combines the excellent properties of polyurethanes with the crosslinking chemistry of epoxy resins. Glycidyl carbamate functional oligomers were synthesized by the reaction of poly functional isocyanate oligomers and glycidol. The oligomers were formulated into coatings with several amine functional crosslinkers at varying stoichiometric ratios and cured at different temperatures. Properties such as solvent resistance, hardness, and impact resistance were dependent on the composition and cure conditions. Most coatings had an excellent combination of properties. Studies were carried out to determine the kinetics of the curing reaction of the glycidyl carbamate functional oligomers with multifunctional and model amines. Detailed kinetic analysis of the curing reactions was also undertaken. The results indicated that the glycidyl carbamate functional group is more reactive than a glycidyl ether group. DOI : 10.1007/s11998-005-0011-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0011-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3799
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Code-barres Cote Support Localisation Section Disponibilité 002327 - Périodique Bibliothèque principale Documentaires Disponible Properties of powder coatings in load carrying construction / Daniel Stahlberg in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 6 (04/2005)
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Titre : Properties of powder coatings in load carrying construction Type de document : texte imprimé Auteurs : Daniel Stahlberg, Auteur ; Mats Johansson, Auteur Année de publication : 2005 Article en page(s) : p. 473-481 Note générale : Bibliogr. Langues : Américain (ame) Tags : Effet épaisseur Propriété mécanique surface Etude expérimentale Acier Peinture poudre Utilisation Rugosité Résistance compression Matière charge Relation formulation propriété Durcissement(matière plastique) Barytine Wollastonite Matériau renforcé dispersion Ester polymère composite revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : The present study describes the mechanical behavior of powder coatings used under very high compressive loads in clamping force joints. Carboxyl functional polyester powder coatings cured with hydroxyl functional béta-hydroxyalkylamides, with variations in coating thickness and amount and type of filler, have been studied. The coatings were subjected to conventional tests for coatings and polymers and also to specially designed tests developed to study the behavior of powder coatings in clamping force joints. The specially designed tests were used to study the coatings under compressive loads, and the relation between the results from these test methods and from conventional tests is discussed. The results show the importance of coating thickness in order to achieve the desired mechanical properties of coating when used under high compressive loads. These loads put high demands on the stability of the coating, and the defects must be kept to a minimum. Increased thickness will give rise to more defects in the coating, especially voids and blisters due to the evaporation of water formed during the curing of the polyester powder coating. The surface roughness of the coating is also affected by the coating thickness, but the main influence originates from the type and amount of filler used. A rough surface will give rise to stress concentrations and increased plastic deformations in the coating, impairing the properties of the clamping force joint. DOI : 10.1007/BF02733890 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02733890.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3842
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Code-barres Cote Support Localisation Section Disponibilité 001483 - Périodique Bibliothèque principale Documentaires Disponible