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EUROPEAN COATINGS JOURNAL (ECJ) . N° 7-8/02Mention de date : 07-08/2002Paru le : 01/07/2002 |
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Ajouter le résultat dans votre panierCoatings by controlled radical polymerization / Peter Callais in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/02 (07-08/2002)
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Titre : Coatings by controlled radical polymerization Type de document : texte imprimé Auteurs : Peter Callais, Auteur ; Olivier Guerret, Auteur Année de publication : 2002 Article en page(s) : p. 16-25 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Polymérisation radicalaire controlée
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : Several techniques have been researched to develop ways to control free radical polymerizations and terms like "Controlled Radical Polymerization" (CRP) or "living" free radical polymerizations have been used to describe the process. Thekey aspect in CRP is its ability to eliminate the termination of growing free radical chains. This facilitates the synthesis of polymers with low polydispersities, as well as co- and multiblock copolymers. This technology also allows well-defined polymer modification and grafting. Now, there is a family of nitroxide derivatives that can be applied to a wide range of free radical polymerizations to perform controlled radical polymer synthesis. This paper will examine the use of two nitroxide compounds, namely "SG-1" and "Monams", to synthesize acyrilic High Solids Coating (HSC) resins with low polydispersities. Note de contenu : - Nitroxyl compounds act as part of a "living radical" system
- Going to higher solids contents
- How the nitroxide controls the polymerization
- Solution viscosity of the CRP resin is half that of the control resin
- Effect of polymerization temperature
- Reduction of residual monomer
- Water dspersed controlled polymerization
- Synthesis of block copolymers in mini emulsion at 115°CEn ligne : https://drive.google.com/file/d/1zn6u-upxUbeb5u8yjwXUh8TKQyXvDE3Y/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10717
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/02 (07-08/2002) . - p. 16-25[article]Réservation
Réserver ce documentHyperbranched polyesters / Mats Johansson in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/02 (07-08/2002)
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Titre : Hyperbranched polyesters : Basis for low temperature powder coatings Type de document : texte imprimé Auteurs : Mats Johansson, Auteur ; Eva Malmström, Auteur ; Anders Hult, Auteur ; Hans Claesson, Auteur Année de publication : 2002 Article en page(s) : p. 26-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Basses températures
Polyesters
Polymères ramifiés
Revêtements poudre:Peinture poudreIndex. décimale : 667.9 Revêtements et enduits Résumé : A dendritic polymer is used as scaffolds for solid thermoset resins i.e. powder coatings. To make it crosslinkable there is a concept of attaching crystalline segments to a dendritic polymer and subsequent functionalization. The rheological performance of these structures makes it possible to reduce the film formation temperature to 80°C thus enabling heat sensitive substrates such as wood and polymers to be coated. The effects of structural variations on the rheological and mechanical properties are shown. The main factors affecting the final properties is the length of the crystalline grafts while the core structure induces only smaller differences in properties. The obtained resins are UV-curable with little or very low levels residual unsaturation present in the cured films. Note de contenu : - Powder coatings : curing temperature of 150°C should be reduced
- Radiation curable systems need less heat
- Another way : low temperature curable hyperbranched polymers
- Hyperbranched polymers are synthetized
- Photopolymerization at 70°C
- High polarity end-groups increase viscosity
- Graft length dominates viscosity and degree of crystallinity
- Crosslinking and final film propertiesEn ligne : https://drive.google.com/file/d/1jKP_OIqA7J4lkv8kVKeJ2IGK7PTy3d9f/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10726
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/02 (07-08/2002) . - p. 26-33[article]Réservation
Réserver ce documentCoatings for active substrates / Vladimir V. Verkholantsev in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/02 (07-08/2002)
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Titre : Coatings for active substrates : Part 1 - Extended, coagulating and chemically active substrates Type de document : texte imprimé Auteurs : Vladimir V. Verkholantsev, Auteur Année de publication : 2002 Article en page(s) : p. 37-43 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Reactions between coating materials and the substrate often critically contribute to the coatings performance and service properties. This article reviews film forming processes, application techniques, and waterborne coating compositions specifically suitable for "active" substrates. This comprises surfaces that are substantially rough, porous, or chemically reactive towards the coating, e.g. conversion or rust layers on metals. Note de contenu : - Extended substrates
- Rate of penetration
- Spreading velocity
- Coagulating substrates
- Conversion substrates
- Conversion coatings on metallic substrates
- Pre-treated plastics
- Chemically reactive substrates
- Chemical adhesion promoters
- Reactive primers (phosphating, protective and passivating)
- Coating rusty steel
- Surface polymerizationEn ligne : https://drive.google.com/file/d/1002pr2V6CE4sG6jFA4aWJFpZ6sZClrcp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10727
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/02 (07-08/2002) . - p. 37-43[article]Réservation
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Titre : High-solids system Type de document : texte imprimé Auteurs : Thomas Brock, Auteur ; Michael Groteklaes, Auteur ; Peter Mischke, Auteur Année de publication : 2002 Article en page(s) : p. 60-62 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Learn more about the basics in coatings technology. Coatings college provides you with useful information on selection and properties of raw materials, formulation principles, production problems, and you will find answers to many other questions of iterest for your day-to-day work. In every issue of the European Coatings Journal emphasis is being put on a special topic. Note de contenu : - Film formers
- Additives
- Pigments
- Fig. 1 : Influence of pigment content on viscosity as a function of non-volatile contentEn ligne : https://drive.google.com/file/d/1ScGXBmz9XocN8pKHqXq2zD_YFdeTFxSA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33487
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/02 (07-08/2002) . - p. 60-62[article]Réservation
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