Benefits of UV-curable coatings / Kevin Bruen in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/2004 (04/2004)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/2004 (04/2004) . - p. 42-48 Titre : Benefits of UV-curable coatings Type de document : texte imprimé Auteurs : Kevin Bruen, Auteur ; Kurt Davidson, Auteur ; Daniel F. E. Sydes, Auteur ; Peter M. Siemens, Auteur Année de publication : 2004 Article en page(s) : p. 42-48 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Typically flexible fluoropolymer PUR coatings are spray applied directly after vulcanisation of the rubber during the continuous extrusion process and then thermally cured in a series of conventional, microwave or infrared ovens. This conventional cure process is costly, inefficient and results in high overhead costs. In the age of continual demands for cost reduction, improved efficiency and reduction in VOC levels, a range of waterborne 1-pack UV curable coatings meeting market and technical requirements have been developed. Realizing the benefits of a UV curable coating system in a continual extrusion process means at least an enormous increase in speed of cure, waste reduction, lower solvent emissions, lower energy costs and huge space savings. In some cases it is even the only way to implement the application of a coating into to the manufacturing process due to limitations in line speed and/or in the mechanical properties of the rubber substrate. Note de contenu : Before the curing step the coating has no abrasion or chemical resistance and is often tacky UV-curable coating systems cure in less than a second UV-technology for continuous extrusion processes coating systems Space saving Easy installation of UV curing equipment Lower energy costs Reduced waste Increased line speed Coatings are based on different types of waterborne PUR-dispersions UV-curing equipment with very stable UV output over life time Parameters tested: solvent resistance, abrasion resistance and flexibility Water removal stage is essential Combining UV-output of a V- and a D-bulb respectively of a H and a D-bulb results in superior solvent resistance. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9445 [article]

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Formulating coatings with silver-based antimicrobials : a systematic approach / Kurt Davidson in COATINGS TECH, Vol. 4, N° 1 (01/2007)  

[article]  inCOATINGS TECH > Vol. 4, N° 1 (01/2007) . - p. 56-62 Titre : Formulating coatings with silver-based antimicrobials : a systematic approach Type de document : texte imprimé Auteurs : Kurt Davidson, Auteur ; Brett Moyer, Auteur ; Kumar Ramanathan, Auteur ; Andrea Preuss, Auteur ; Barbara Pomper, Auteur Année de publication : 2007 Article en page(s) : p. 56-62 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Argent Formulation (Génie chimique) Revêtements -- Propriétés physiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Silver-based antimicrobials have increased in popularity due to their high efficacy against bacteria and low ecotoxicity. There is growing interest in using them for antimicrobial coatings. However, formulation of these products into traditional coating systems can present some unique challenges, including film discoloration, loss of gloss, poor rheology, and shelf stability. This article presents a systematic study of the incorporation of silver-based antimicrobials into starting point formulations of different industrial and decorative coatings, with a focus on optimizing dispersion, storage stability, and film clarity of the coating formulation. Antimicrobial efficacy against bacteria of common interest are also presented for the optimized coating formulations. Note de contenu : - Desirable antimicrobial properties - Market and market trends - Silver-based antimicrobials - Formulating considerations - Mechanism of action - Bioefficacy testing protocol - Effect of silver-based antimicrobial on physical properties of coatings - Bioefficacy test results - Correlation of Tg and water repellency efficiency with bioefficacy - Table 1 : Tg and WRE values vs. antimicrobial concentration required for bioefficacy - Table 2 : Starting point formulations evaluated with SAM1 En ligne : https://drive.google.com/file/d/15PdRS2Au6FCpkfaMzCf0qsr03zcjR_c7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3606 [article]

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