23 résultat(s) recherche sur le tag 'Métal'

Characterization of clearcoats containing phosphoric acid-functionalized acrylic polyols for automotive precoated metal sheet coatings / Jae Young Lee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 5 (09/2014)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 5 (09/2014) . - p. 697-710 Titre : Characterization of clearcoats containing phosphoric acid-functionalized acrylic polyols for automotive precoated metal sheet coatings Type de document : texte imprimé Auteurs : Jae Young Lee, Auteur ; Myung Seon Yi, Auteur ; Ho Cheol Jeong, Auteur ; Jung Teag Kim, Auteur ; Joon Hyun Nam, Auteur ; Seung Man Noh, Auteur ; Hyun Wook Jung, Auteur Année de publication : 2014 Article en page(s) : p. 697-710 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Vernis Tags : 'Automotive  clearcoat'  'Precoated  metal  sheet'  'Phosphoric  acid-functionalized  acrylic  polyols'  'Glycidyl  methacrylate'  acid-GMA  modified  'Deep-draw  formability'  'Crosslinking  networks' Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, the various physical and mechanical properties of clearcoats prepared through a new crosslinking method were investigated. The method was aimed at developing clearcoat systems to improve the deep-draw processing and formability performance in precoated metal (PCM) sheets for automotive applications. From phosphoric acid-functionalized acrylic polyols (PAFAPs) first synthesized in this study and glycidyl methacrylate-modified acrylic copolymer (GMAMAC), phosphoric acid-GMA modified acrylic polyols (PAGMAPs) were newly prepared as new binders in automotive clearcoats. Several clearcoats were formulated with different molecular weights and hydroxyl contents from PAFAPs and GMAMAC. Using clearcoats themselves, the crosslinking reactions for these clearcoats were compared by evaluating the curing behaviors with a rigid-body pendulum test (RPT) and the changes of chemical structures via attenuated total reflectance FTIR spectroscopy. The mechanical properties of the clearcoats were systematically characterized, using dynamic mechanical analysis (DMA) and universal testing machine analysis (UTM). Also, various tests were carried out using PCM sheets by depositing clearcoats above the same PCM-based primers and basecoat layers on galvanized steel. The fracture and deformation patterns related to surface damages on the clearcoat surface were visualized using a nano-scratch test, in association with atomic force microscopy. In particular, deep-draw processing tests, based on forming process simulations, were employed to scrutinize the effect of clearcoats developed in this study on the forming feature in PCM sheets. From the results of RPT, DMA, and UTM tests, the primary crosslinking networks of PAGMAPs from the synthesized PAFAPs and GMAMAC, and also succeeding secondary crosslinking networks between PAGMAPs and blocked isocyanates, were closely correlated with the degree of crosslinking (X c), in accordance with the molecular weight between crosslinks (M c), and glass transition temperature (T g). As a result, the presented clearcoats with a long pendulum period, a low rubbery modulus, and a large tensile strain value, which are the significant factors for developing automotive PCM sheet technology, have truly demonstrated more superior formability during the deep-draw process. It is confirmed that properties of clearcoats with toughness and flexibility could be optimally controlled by PAGMAPs for automotive coatings. Note de contenu : - EXPERIMENTAL : - Materials - Characterization methods - RESULTS AND DISCUSSION : -Reactivity analysis by FTIR spectroscopy - Curing behavior by RPT - Viscoelastic and mechanical properties - Water-swelling and gel-fraction properties - Tensile properties - Deformations of clearcoat surfaces - Deep-draw processing formability DOI : 10.1007/s11998-014-9589-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9589-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22052 [article]

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Influence of various parameters on adhesion of paint coatings to metal substrates / Babu R. Satheesh in PAINTINDIA, Vol. XLVIII, N° 1 (01/1998)

[article]  inPAINTINDIA > Vol. XLVIII, N° 1 (01/1998) . - p. 26-34 Titre : Influence of various parameters on adhesion of paint coatings to metal substrates Type de document : texte imprimé Auteurs : Babu R. Satheesh, Auteur ; M. N. Sathyanarayana, Auteur ; M. Yaseen, Auteur ; V. S. Kishanprasad, Auteur Année de publication : 1998 Article en page(s) : p. 26-34 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture  Adhérence  Métal Index. décimale : 667.9 Revêtements et enduits Résumé : Paint coatings are used widely to protect metal and non-metal surfaces apart from giving them aesthetic appearance. A protective layer is expected to withstand the varying environmental conditions which cause changes in its structure and eventually lead to its failure in service. Among the prime properties, adhesion of a coating to the substrate is considered to be an important one. It is evident that however excellent the other properties of the paint coating may be, its protective function would not be fulfilled if it does not have adequate adhesion to the substrate. Several factors which contribute to the adhesion of a paint coating are nature of substrate, surface preparation/pretreatment, composition of the resin used as binder, nature of the solvent used, viscosity and applications of the paint and thickness of the coating. The influence of these parameters on adhesion of paint coatings to metal substrate has not been fully established, yet. In an attempt to generate practical information about them, the following aspects have been studied : i) The influence of acid value and hydroxyl value of the resin used as binder. ii) Effect of surface preparation and pretreatment. iii) The variation in adhesion strength with thickness of the paint coating. iv) The level of pigmentation and part replacement of prime pigments by extenders/fillers. v) The bond strength of paint coatings to metal substrates. In the present study the Direct Pull Off Technique was used for measuring the practical adhesion of paint coatings. Note de contenu : - Factors influencing adhesion of coatings to metal substrates Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13100 [article]

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Producing large, double-curved fibre-metal laminate fuselage panels / Brent Vermeulen in JEC COMPOSITES MAGAZINE, N° 31 (03-04/2007)

[article]  inJEC COMPOSITES MAGAZINE > N° 31 (03-04/2007) . - p. 103-106 Titre : Producing large, double-curved fibre-metal laminate fuselage panels Type de document : texte imprimé Auteurs : Brent Vermeulen, Auteur ; Michel Jansen, Auteur ; Giel van der Kevie, Auteur Année de publication : 2007 Article en page(s) : p. 103-106 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Propriété  mécanique'  Modélisation  'Fibre  minérale'  Aérospatiale  Fuselage  Application  'Etude  théorique'  'Simulation  numérique'  'Relation  contrainte  déformation'  'Modèle  Moulage  Plissement  'Défaut  fabrication'  'Forme  courbe'  Panneau  Aluminium  'Matériau  composite'  verre'  renforcé  fibre'  Epoxy  'Stratifié  métal  FML Index. décimale : 668.4 Plastiques, vinyles Résumé : Placing flat metal sheets in a double-curved mould will result in wrinkling of the sheet. Limiting the width of the metal sheets can reduce this wrinkling, but will increase part count of the laminate. An analytical model has been developed to calculate the maximum allowable width of the metal sheets, assuring producibility. Note de contenu : - The splicing concept - Problem statement and solution approach - Measuring of strains in an aluminium sheet when placed in an industrial mould - Finite element simulation of the test - Analytical model development based on a finite difference approach - Analysis of the results, comparing test results, FE simulation and analytical model Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14208 [article]

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Thermo-responsive Metal-chelating Surfactants : Properties and Use in Cloud Point Extraction of Uranyl Nitrate / S. Prévost in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 2/2009 (02-03/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 2/2009 (02-03/2009) . - p. 100-104 Titre : Thermo-responsive Metal-chelating Surfactants : Properties and Use in Cloud Point Extraction of Uranyl Nitrate Type de document : texte imprimé Auteurs : S. Prévost, Auteur ; H. Coulombeau, Auteur ; K. Baczko, Auteur ; L. Berthon, Auteur ; N. Zorz, Auteur ; H. Desvaux, Auteur ; F. Testard, Auteur ; Th. Zemb, Auteur ; C. Larpent, Auteur Année de publication : 2009 Article en page(s) : p. 100-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : Thermo-responsive  surfactants  Metal  binding  Uranyl  complex  Cloud  point  extraction  Nonionic Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The properties of new thermo-responsive functional surfactants, capable of forming a metal chelate, synthesized by grafting a diamide group (amino-acid residue) to the tip hydrophilic endgroup or in a branched position to polyoxyethylene nonionic surfactants [CiEj: CiH2i+1(OCH2CH2)jOH)], are studied. Their use in cloud point extraction of uranyl nitrate is tested. The reversible temperature-dependent behavior of classical non-ionic surfactants associated to phase separation of micellar solutions known as clouding behavior is exploited for separation based on cation specific binding to the chelating group. The functional surfactants under investigation combine surface-active properties and characteristic thermoreversible behavior with a capacity to bind uranyl cation. The influence of the complexation on the cloud points of functional surfactants is determined. The chelating surfactants are found efficient for the cloud point extraction of uranyl nitrate at low surfactant-to-uranyl ratio. These new thermoresponsive surfactants with chelating properties hold most promise for the development of new solvent free extraction processes. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4578 [article]

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A variable radius roll adhesion test (VaRRAT) suitable for measuring the adhesion of paint to metal / Damien Jinks in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 926 (03/2002)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 74, N° 926 (03/2002) . - p. 49-61 Titre : A variable radius roll adhesion test (VaRRAT) suitable for measuring the adhesion of paint to metal Type de document : texte imprimé Auteurs : Damien Jinks, Auteur ; Hugh Brown, Auteur ; David Buxton, Auteur Année de publication : 2002 Article en page(s) : p. 49-61 Note générale : Bibliogr. Langues : Américain (ame) Tags : Méthode  élément  fini  Modélisation  Etude  expérimentale  Propriété  mécanique  Epoxyde  résine  Essai  adhérence  Placage  Métal  Adhérence  Peinture  Matériau  revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : Early trials and analysis of a new adhesion test are discussed. The test is designed for measuring the adhesion of paint to deformable steel sheets as used in building, automotive, and other cladding applications, and does not require detailed knowledge of the paint mechanical properties. A stiff overlay, such as an epoxy resin, is applied to the coating, and the steel substrate is peeled away using a roll of well defined radius to which the steel substrate is con strained. The propagation of a crack within the paint or at some interface in the paint/metal system depends mostly on the mechanical properties and thickness of the overlay and the radius of the constraining roll. The test is shown to discriminate better than existing practical adhesion tests between paints of expected differing adhesion/cohe sion, but also presents some inconsistencies that require further work to resolve. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5672 [article]

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Digital image capture - Filmless camera technology and techniques / Algy Kazlauciunas in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B3 (09/2006)  

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Investigation of fluoroacid based pretreatments on aluminium / P. D. Deck in SURFACE COATINGS INTERNATIONAL, Vol. 81, N° 10 (10/1998)

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Design and in vivo evaluation of ultrafine inorganic-oxide-containing-sunscreen formulations / M. Turkoglu in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 19, N° 4 (08/1997)  

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Effect of formulation variables on coating properties and performance in the deep draw process / A. Polyakova in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 901 (02/2000)

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Iron : a cosmetic constituent but an essential nutrient for healthy skin / A. B. G. Lansdown in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 23, N° 3 (06/2001)  

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Novel, water-based fluorinated polymers with excellent antigraffiti properties / Jurgen Scheerder in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)  

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Performance of coil coating primers / C. Lowe in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 909 (10/2000)

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Zinc and titanium oxides : promising UV-absorbers but what influence do they have on the intact skin? / A. B. G. Lansdown in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 19, N° 4 (08/1997)  

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Aérospatiale. Adhésifs structuraux - méthodes d'essais - Norme NF EN 2243-5 / Bureau de Normalisation de l'Aéronautique et de l'Espace / Issy-les-Moulineaux : BNAE (1992)

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Cement-based coatings for the protection of concrete and ferrous metals / P. Bennison in SURFACE COATINGS INTERNATIONAL, Vol. 80, N° 3 (03/1997)

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INDAR : INovative Dismantling Adhesives Research / José Alcorta in JEC COMPOSITES MAGAZINE, N° 40 (05/2008)

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Interfacial studies of crosslinked urethanes : part IV. Substrate effect on film formation in polyester waterborne polyurethanes / Marek W. Urban in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 896 (09/1999)

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New developments in radiation - curable powder coatings / Saskia Udding-Louwrier in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 904 (05/2000)

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Oxidative stress and cutaneous ageing : the "toxic second messengers" concept and an interesting family of products, "pseudodipeptides" / C. Carletto in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 22, N° 5 (10/2000)  

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Practical aspects of specular reflectance measurement on metals / A. J. Dowell in SURFACE COATINGS INTERNATIONAL, Vol. 79, N° 8 (08/1996)

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Relier plasturgie au travail des métaux en bandes / Jean Guilhem in PLASTIQUES & ELASTOMERES MAGAZINE, N° 57-2 (03/2005)

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Travaux de bâtiment. Peinture de sols - Partie 1 : Cahier des clauses techniques - Norme NF P 74-203-1/A1 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (2000)

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Travaux de bâtiment - Revêtements de peinture en feuil mince, semi-épais, ou épais. Partie 1-1 : Cahier des clauses techniques types - Norme NF DTU 59-.1 P1-1 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (2013)

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