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Partager le résultat de cette rechercheSynthesis of polymeric dispersants from renewable DCO fatty acid and their multifunctional behavior in waterborne flat paint / Ravi Dara in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)
Titre : Synthesis of polymeric dispersants from renewable DCO fatty acid and their multifunctional behavior in waterborne flat paint Type de document : texte imprimé Auteurs : Ravi Dara, Auteur ; Ghanshyam Jaiswal, Auteur ; Girish Mirchandani, Auteur ; Randhir Parmar, Auteur ; Syed Haseebuddin, Auteur ; Gulzar Waghoo, Auteur ; Kumar Ghosh Swapan, Auteur Année de publication : 2009 Article en page(s) : p. 493-499 Note générale : Bibliogr. Langues : Américain (ame) Tags : Dehydrated castor oil fatty acids (DCOFA) Maleic anhydride Polymeric-dispersant Pigment dispersant Rheology modifier Zeta potential Minimum film-forming temperature (MFFT) Waterborne flat paint Index. décimale : 667.9 Revêtements et enduits Résumé : Copolymers containing 50% dehydrated castor oil fatty acids (DCOFA) derived from renewable resources, were synthesized via free radical solvents less polymerization with maleic anhydride, styrene, and butyl acrylate. The copolymer was crosslinked further with polyethylene glycol 400 (PEG 400) to increase its molecular weight. The copolymers with and without crosslinking were then neutralized with sodium hydroxide to prepare polymeric dispersants DFCD1 and DFCD2 respectively in aqueous medium. It was observed via surface-tension measurement that both DFCD1 and DFCD2 transfer to the air–water interface before forming any aggregates, and the ease of forming the aggregates is in the order of DFCD1 > DFCD2. The efficacy of these dispersants was examined in the dispersion of the titanium dioxide pigment and conventional extenders like calcite, talc, and china clay using flow point and zeta potential measurements. The results reveal that DFCD2 improved the dispersing ability for the pigment and extenders studied. The performance of these polymeric dispersants was also studied and compared in waterborne flat paint as a rheology modifier and pigment-dispersing agent. The paint rheology profile and dE data indicate the superior performance of the paint containing dispersant DFCD2. When used in combination with conventional styrene-acrylic latex, DFCD1 and DFCD2 reduced the minimum film-forming temperature (MFFT) of the polymer latex. DOI : 10.1007/s11998-008-9156-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9156-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7692
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009) . - p. 493-499[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011845 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Effect of nano-Al2O3 particles on the corrosion behavior of alkyd based waterborne coatings Type de document : texte imprimé Auteurs : Shailesh K. Dhoke, Auteur ; T. Jai Mangal Sinha, Auteur ; A. S. Khanna Année de publication : 2009 Article en page(s) : p.353-368 Note générale : Bibliogr. Langues : Américain (ame) Tags : Waterborne coatings Nano-Al2O3 Corrosion resistance UV Index. décimale : 667.9 Revêtements et enduits Résumé : A modification in the alkyd based waterborne coatings was studied with the addition of 0.05%, 0.1%, 0.2%, and 0.3% nano-Al2O3. Corrosion performance of the nano-composite coatings were evaluated by applying these nanocomposites on mild steel substrate and exposing them to salt spray, humidity, and accelerated weathering. Mechanical properties were studied by subjecting the coating to scratch and abrasion test. The results showed that, with an increase in the concentration of nano-Al2O3 there was an improvement in the corrosion resistance, UV resistance, and mechanical properties of the coatings indicating the positive effect of addition of nano-Al2O3 particles in the coatings. Further, the transparency of the coating was not altered, maintaining the optical clarity of the coating. DOI : 10.1007/s11998-008-9127-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9127-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6116
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 3 (09/2009) . - p.353-368[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011503 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Polymer heterogeneity in waterborne coatings Type de document : texte imprimé Auteurs : Ad Overbeek, Auteur Année de publication : 2010 Article en page(s) : p. 1-21 Note générale : Bibliogr. Langues : Américain (ame) Tags : Coating Heterogeneous Waterborne Gloss Adhesion Nano-structured Hybrid Index. décimale : 667.9 Revêtements et enduits Résumé : An overview is presented of the progress in understanding polymer heterogeneity over the last 20 years and how this has contributed to the improvement of coatings. Solvent-based polymers are homogeneous in nature, since all polymeric materials tend to be dissolved in the same solvent mixture. This is different for most waterborne polymers, which tend to be present in a compartmentalized way. Most polymeric materials are present in particles, which are separated by the continuous aqueous phase. This gives excellent opportunities to create particle morphologies that form the basis for the film morphology after drying of the coating. This article gives an overview of the various types of heterogeneity which are accessible in waterborne polymers and will show how heterogeneity in the polymer can contribute to the solution of several persistent problems of the coating industry. DOI : 10.1007/s11998-009-9201-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9201-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8343
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 1 (01/2010) . - p. 1-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011962 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Striking a balance : Effects of changing monomer ratios in copolymers examined Type de document : texte imprimé Auteurs : Ganesh Datt Bajpai, Auteur ; Raju Kumar, Auteur ; Pramod Kumar, Auteur Année de publication : 2008 Article en page(s) : p. 32-35 Note générale : Notes bibliogr. Langues : Anglais (eng) Catégories : acrylique, Acide L'acide acrylique ou acide acroléïque ou acide prop-2-énoïque est un composé organique de formule brute C3H4O2 et de formule semi-développée CH2=CHCOOH. C'est un acide carboxylique et un alcène vinylique, et se présente comme un liquide incolore à l'odeur âcre.
L'acide acrylique et ses esters, les acrylates, sont utilisés dans la fabrication de matières plastiques, dans les peintures acryliques et dans divers autres polyacryliques qui ont de multiples usages.
Copolymères -- Synthèse
Méthacrylate de 2-hydroxyéthyle
Polyacryliques
Revêtements organiques
ThermodurcissablesTags : Waterborne acrylics Index. décimale : 667.9 Revêtements et enduits Résumé : Thermosetting acrylic (TSA) copolymers/resins were synthesised by reacting acrylic acid and 2-hydroxyethyl methacrylate monomers in varying molar rations. The prepared resins were made water-soluble by neutralisation, and stoved films were tested for various properties. A 1:1 molar ratio of the monomers appears to provide the most useful. balance of properties. En ligne : https://drive.google.com/file/d/1v6oVxPQsl5naYRgWh5KrKoVuYrdMa-_i/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2383
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/2008 (07-08/2008) . - p. 32-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010505 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Bring back the steel ? The growth of plastics in automotive applications Type de document : texte imprimé Auteurs : Rose Ann Ryntz, Auteur Année de publication : 2006 Article en page(s) : p. 3-14 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Flow agents' 'Dynamic mechanical properties' Fluorescence Hardness 'Scratch resistance' 'UV spectroscopy' Photodegradation Polyacrylics Isocyanates 'Melamine-formaldehyde resins' Photostabilizers Polyurethanes Solventborne 'UV, EB radiation cure' Waterborne 'Service life prediction' Weatherability Automotive-OEM High-solids Latex PARP Index. décimale : 667.9 Revêtements et enduits Résumé : The development of plastics has evolved from the use of natural materials to the use of chemically modified natural materials and, finally, to completely man-made molecules. Plastics continue to improve, to afford flexibility, high-impact, and strength. In automotive applications, plastics have increased in utilization to comprise approximately 10% of the total vehicle weight. They offer increased ductility, freedom from corrosion, and increased styling capability. Although plastics have had a remarkable impact on our culture, it is obvious that there is a price to be paid for their use. Plastics are almost too good, as they are durable when processed correctly, but easily damaged when utilized in the incorrect application. Plastics also degrade very slowly, making recycling mandatory. And finally, while plastics consume only 4% of the world's oil production (petroleum is the raw material that is chemically altered to form commercial plastics), their cost hinges on the cost of petroleum. As petroleum prices increase, so too will the cost of plastic. In 2004, the higher price of plastic forced many plastic manufacturers out of business, and forced many automotive suppliers to look into alternative replacements. With publications such as USA Today reporting that current oil reserves will only last 40 years, scientists continue to seek cheaper alternatives to plastic. This article summarizes the history of commercial plastic development, with a focus on utilization of the materials in automotive applications. Damage criteria of plastic components, namely scratch, oxidative degradation, and impact, are discussed in relation to coatings and processing robustness. Environmental regulations, particularly in relation to recycling mandates, are explained. And finally, trends in alternative material development, including bioplastics, films, ceramic coatings, and nano-composites, are formulated. DOI : 10.1007/s11998-006-0002-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-006-0002-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3708
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 1 (01/2006) . - p. 3-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003762 - Périodique Bibliothèque principale Documentaires Disponible
