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Testing accelerated weathering tests for appropriate weathering chemistry : Ozone filtered xenon arc / J. L. Gerlock in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 35-45 Titre : Testing accelerated weathering tests for appropriate weathering chemistry : Ozone filtered xenon arc Type de document : texte imprimé Auteurs : J. L. Gerlock, Auteur ; Mark E. Nichols, Auteur ; R. O. Carter, Auteur ; Christopher M. Seubert, Auteur ; T. Misovski, Auteur ; A. V. Kucherov, Auteur ; C. A. Peters, Auteur Année de publication : 2003 Article en page(s) : p. 35-45 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude  expérimentale  Xénon  Arc  électrique  Ozone  Exposition  intempérie  Essai  vieillissement  accéléré  Peinture  Matériau  revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : FTIR spectroscopy has been used to follow the weathering chemistry of a HALS and UVAfree polyester/urethane and a HALS and UVA free acrylic/ melamine clearcoat cured on silicon wafers and subjected to exposure in Florida, Arizona, and in a number of accelerated weathering tests. All accelerated tests except EMMAQUA-NTW, ozone filtered xenon arc, and 3M Proprietary exposures distort the polyester/urethane's weathering chemistry relative to its Florida and Arizona exposure weathering chemistry. Distorted weathering chemistry was attributed primarily to spectral power distribution mismatch between artificial radiation and sunlight. Experiments were initiated with an ozone filtered xenon arc radiation source whose spectral power distribution matches sunlight with great fidelity in the 290-400 nm region. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5610 [article]

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Speciation of the volatile organic compounds (VOCs) in solventborne aerosol coatings by solid phase microextraction-gas chromatography / Albert C. Censullo in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 47-53 Titre : Speciation of the volatile organic compounds (VOCs) in solventborne aerosol coatings by solid phase microextraction-gas chromatography Type de document : texte imprimé Auteurs : Albert C. Censullo, Auteur ; Dane Jones, Auteur ; Max Wills, Auteur Année de publication : 2003 Article en page(s) : p. 47-53 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude  expérimentale  Solvant  organique  Fluide  propulseur  Chromatographie  phase  gazeuse  Microextraction  solide  Spéciation  Composé  volatil  Analyse  chimique  Aérosol  Peinture  Matériau  revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A method for the speciation of solventborne aerosol coatings is presented. Propellant from an aerosol coating is transferred to a gas collection bag and is then analyzed by GC-FID. The propellant-free liquid paint is then internally standardized with a mixture of C5 to C11 normal alkanes and analyzed on a 50-meter capillary column using solid phase microextraction (SPME) with GC-FID detection. This procedure makes it possible to assign linear retention indexes to virtually all of the individual volatile solvents in the coating with subsequent identification. After identification by SPME, the coating is dispersed in a high boiling solvent, internally standardized with a material not coeluting with the coating solvents, and is then analyzed by direct GC-FID. VOC regulations in California for aerosol coatings products require that the coatings have a reactivity (product weighted maximum incremental reactivity or PWMIR) which is below a designated value. Assignment of PWMIR values to aerosol coatings requires that the amount of each individual volatile component in a coating be known. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5611 [article]

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Preparation and characterization of weather resistant silicone/acrylic resin coatings / Hong-Soo Park in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 55-64 Titre : Preparation and characterization of weather resistant silicone/acrylic resin coatings Type de document : texte imprimé Auteurs : Hong-Soo Park, Auteur ; S. R. Kim, Auteur ; H. J. Park, Auteur ; Y. C. Kwak, Auteur ; Hyun-Sik Hahm, Auteur ; S. K. Kim, Auteur Année de publication : 2003 Article en page(s) : p. 55-64 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Etude  expérimentale'  Caractérisation  'Stabilité  thermique'  'Propriété  Couleur  optique'  Viscosité  rhéologique'  physique'  Feuil  'Résistance  intempérie'  Polyméthacrylate  de  butyle'  'Polyméthacrylate  méthyle'  'Copolymère  Acrylate  Silicones  Préparation  Liant  Formulation  Peinture  'Matériau  revêtement' Index. décimale : 667.9 Revêtements et enduits Résumé : Preparation and characterization of weather resistant silicone/acrylic resin coatings were conducted. In order to prepare these coatings, a silicone/acrylic resin (KLD) was first prepared by an addition polymerization reaction of monomers, including n-butyl acrylate, methyl methacrylate, n-butyl methacrylate, and 3-methacryloxypropyltrimethoxysilane (MPTS). In the preparation of the sillicone/acrylic resin, Tg of the acrylic copolymer was fixed at 40°C and the contents ofMPTS were varied to be 10, 20, and 30 wt%. The weather resistant silicone/acrylic resin coatings were then prepared by blending the synthesized silicone/ acrylic resin and TiO2. The viscosity of the synthesized resin decreased with the content of MPTS, whereas the thermal stability at high temperature increased. The prepared coatings exhibited excellent adhesion to various substrates, and various physical properties of the coatings were satisfactory. The weatherability of the coatings was tested three ways: outdoor exposure test, Weather-Ometer (WOM), and QUV accelerated weatherability tester (QUV). The gloss retention, yellowness index difference, color difference, and lightness index difference were improved at high MPTS concentration. The coatings containing 30 wt% MPTS have especially good weather properties. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5612 [article]

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Phase-change inks / Alexandra Pekarovicova in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 65-72 Titre : Phase-change inks Type de document : texte imprimé Auteurs : Alexandra Pekarovicova, Auteur ; Hrishikesh Bhide, Auteur ; Paul D. Fleming ; Jan Pekarovic Année de publication : 2003 Article en page(s) : p. 65-72 Note générale : Bibliogr. Langues : Américain (ame) Tags : Formulation  Encre  Impression  jet  encre  en  creux  Hot  melt  Changement  phase  Matériau  PCM Index. décimale : 667.9 Revêtements et enduits Résumé : Phase-change, or hot melt, inks are solid at ambient temperature and liquid at the moment of printing. Such inks contain no volatile solvent to be trapped in ink film or to produce Volatile Organic Compounds (VOC). The phase-change inks found application in non-impact printing technology by either thermal transfer or solid ink digital printing. The environmental and health problems caused by inks containing volatile organic compounds, such as toluene, call for new solutions in the rotogravure printing industry. Because of their low VOC content, phase-change inks might be a reasonable solution for gravure printing. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5613 [article]

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