Effect of particle size distribution on the performance of two-component water-reducible acrylic polyurethane coatings using tertiary polyisocyanate crosslinkers / Denise E. Fiori in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 902 (03/2000)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 902 (03/2000) . - p. 63-69 Titre : Effect of particle size distribution on the performance of two-component water-reducible acrylic polyurethane coatings using tertiary polyisocyanate crosslinkers Type de document : texte imprimé Auteurs : Denise E. Fiori, Auteur ; David Ley, Auteur ; Richard J. Quinn, Auteur Année de publication : 2000 Article en page(s) : p. 63-69 Note générale : Bibliogr. Langues : Américain (ame) Tags : Peinture  eau  deux  constituants  Uréthanne  polymère  Acrylique  dérivé  Distribution  dimension  particule  Durcissement  Réticulant  Isocyanate  Propriété  physique  mécanique  Feuil  Etude  expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : A two-component waterborne polyurethane system with a 250 g/l VOC has been formulated to meet the performance requirements of the automotive refinish market. This paper discussed an experimental study to develop a two-component water-reducible polyurethane coating using a tertiary aliphatic polyisocyanete crosslinker with dry times, appearance, and reactivity equivalent to a two-component solventborne system. The effects of acrylic polyol monomer composition, glass transition temperature (Tg), and hydroxyl concentration on drytime and ambient cure film performance have been determined. The effects of particle size distribution of the formulated coating on performance were examined. It was found that smaller particle size provides overall improved film propertics, i.e., jaster dry time, increased hardness, and faster development of solvent resistance. The relationship of both acrylic polyol composition and formulation variables on the particle size distribution are discussed. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5823 [article]

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The mechanics of spray finishing leather / Richard J. Quinn in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXX (Année 1975) . - p. 162-168 Titre : The mechanics of spray finishing leather Type de document : texte imprimé Auteurs : Richard J. Quinn, Auteur Année de publication : 1975 Article en page(s) : p. 162-168 Langues : Américain (ame) Catégories : Cuirs et peaux -- Appareils et matériels Cuirs et peaux -- Finition Dépôt par pulvérisation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : It may be of interest to you to know that the first mechanically operated spray finishing machine used for finishing leather was invented 46 years ago, in the year 1927. This new machine was designed and developed by A. C. Lawrence Leather Co., in Peabody, Mass. It was described in the patent, which was later issued in July, 1934, as "An Apparatus for Applying Coating Material to Leather or Hides for the Manufacture of Patent Leather." It was the intent of the inventor to use this device to improve the method of applying the varnish finish coats on patent leather. At the time this material was being applied by hand brushing or swabbing, a method which was slow and expensive. The original machine was semiautomatic in operation and was arranged so that the spray gun carriage could travel continuously up and down in a vertical transverse motion. The leather to he sprayed was supported by rope toggles in a wooden frame which was suspended from an overhead monorail conveyor track. The frame was advanced horizontally by a motorized conveyor chain with an intermittent indexing movement and it remained stationary for each stroke of the spray gun carriage. En ligne : https://drive.google.com/file/d/1ByRzmF-hDafSnj5PyT5Gx7IX2C3s39G_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38784 [article]

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