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A new dispersion technique al alternative to beadmills / Ludger Fischer in EUROPEAN COATINGS JOURNAL (ECJ), N° 01/2010 (01/2010)
[article]
Titre : A new dispersion technique al alternative to beadmills : Low pressure homogeniser processes even difficult materials efficiently Type de document : texte imprimé Auteurs : Ludger Fischer, Auteur Année de publication : 2010 Article en page(s) : p. 22-24 Langues : Anglais (eng) Tags : Dispersions Low pressure nanogenizer (LPN) Index. décimale : 667.9 Revêtements et enduits Résumé : A new low pressure nanogenizer (LPN) operates at much lower pressures than normal, which greatly reduces the heat generated in dispersion. The device is particularly easy to clean and can disperse many difficult materials such as liquids, fibrous materials, waxes and very high viscosity pastes.
En ligne : https://drive.google.com/file/d/1YIZkukyfsFAtM20mdH8-WhGj_qKcxo_J/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8250
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 01/2010 (01/2010) . - p. 22-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011858 - Périodique Bibliothèque principale Documentaires Disponible Dimethyl 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)
[article]
Titre : Dimethyl secondary amine chain extenders : a conceptual approach to in situ generation of advanced epoxy resins for rapid-cure, low-VOC coatings Type de document : texte imprimé Auteurs : Frederick H. Walker, Auteur ; Rob Rasing, Auteur ; Gamini A. Vedage, Auteur ; Michael Cook, Auteur Année de publication : 2009 Article en page(s) : p. 283-313 Note générale : Bibliogr. Langues : Américain (ame) Tags : Poly(N-methylazetidine) Dimethyl-meta-xylylenediamine Pseudo-first-order kinetic Amine reactivity epoxy curing agent Epoxy resin coating Flexibility Crosslink density Miller-Macosko calculation Chain extender VOC Low temperature cure Environmental movement Electrochemical impedance Aine reaction mechanism Mannich base Index. décimale : 667.9 Revêtements et enduits Résumé : Advanced epoxy resin oligomers have traditionally been utilized for coatings that combine fast dry-to-touch speed and good flexibility--properties demanded in many markets such as marine and industrial maintenance coatings. Unfortunately, advanced epoxy resins require formulation with large quantities of solvent that make attainment of modern VOC regulations difficult or impossible. Coatings formulated from low molecular weight liquid epoxy resin, on the other hand, can easier meet VOC challenges, but dry slowly and tend to be brittle. This presentation explores the concept of using fast reacting, di-functional amine chain extenders to generate epoxy oligomers in situ as a means to meet these opposing property demands. Methylamine-terminated poly-(N-methylazetidine) (pNMAz, 1) is prepared in a two-step process involving the Michael addition of methylamine to acrylonitrile, followed by hydrogenation in a methylamine-containing atmosphere to yield an oligomer stream with an [M.sub.n] of about 250. Competitive pseudo-first-order kinetic measurements conducted in isopropyl alcohol indicate methyl-substituted disecondary diamines reacted approximately 3 to 3.6 times faster with phenyl glycidyl ether (PGE) than the primary amine meta-xylylenediamine (MXDA). These chain extenders can be formulated with traditional multi-functional amine crosslinkers to yield coatings with lower VOC, faster dry speed, and better flexibility compared to corresponding coatings formulated without the chain extender. DOI : 10.1007/s11998-009-9178-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9178-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6111
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p. 283-313[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible A novel explanation of the Low Profile mechanism in UPE resins / M. Montagne in JEC COMPOSITES MAGAZINE, N° 27 (08-09/2006)
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Titre : A novel explanation of the Low Profile mechanism in UPE resins Type de document : texte imprimé Auteurs : M. Montagne, Auteur ; X. Bulliard, Auteur ; V. Michaud, Auteur ; Jan-Anders E. Manson, Auteur Année de publication : 2006 Article en page(s) : p. 74-77 Langues : Anglais (eng) Tags : 'Polyester insaturé' Thermodynamique 'Diagramme phase 'Additifs low profile' 'Séparation phase' 'Poids moléculaire' Température Microgels 'Transition vitreuse' 'Micro-miction' Index. décimale : 668.4 Plastiques, vinyles Résumé : The most common theory regarding the Low Profile mechanism is centered on radicals initiating the reaction and the formation of microgels. Note de contenu : - Low profile additives ant their morphology
- Thermodynamics, phase diagrams and cloud point
- Light intensity during cure
- Reaction-induced phase separation
- The effect of PVAc molecular weight on the morphology
- The effect of temperature on the morphology
- The effect of PVAc concentration on the morphology
- Changes in the Tg and microvoidingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13947
in JEC COMPOSITES MAGAZINE > N° 27 (08-09/2006) . - p. 74-77[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 005546 - Périodique Bibliothèque principale Documentaires Disponible