Catch the worm in four dimensions / Jörg Schröder in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/03 (07-08/2003)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/03 (07-08/2003) . - p. 31-37 Titre : Catch the worm in four dimensions Type de document : texte imprimé Auteurs : Jörg Schröder, Auteur Année de publication : 2003 Article en page(s) : p. 31-37 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : The Cohesion Parameter Concept (CPC) is a theoretical method to describe the interactions between the main components of a coating formulation, i.e. binder, solvent, and pigments – analogous to the Hansen Solubility Parameter Concept. An improvement of that method is reported here : two parameters are used to describe hydrogen bonds/acid-base interactions more realistically – in total, the model then uses four parameters. With this modification, the model allows for a realistic evaluation and optimisation of coating formulations in terms of their thermodynamic stability. Note de contenu : A method to judge formulations thermodynamically / H-Bonds are better described by two parameters / Exchange energy density – the more negative, the better / Adapt δD and δP of the components, do not adapt δA and δB / How to determine the values for the new parameters? / Assessing the fundamentals of a pigment dispersion / Comparison between theory/experiment : better prediction with 4D-CPC / Visualise the model En ligne : https://drive.google.com/file/d/1Xb9apcNJHBGI3uf8qRja2FTiXzNLj2Ms/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9478 [article]

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Colloid chemistry aids to formulating inks and paints / Jörg Schröder in EUROPEAN COATINGS JOURNAL (ECJ), N° 5/98 (05/1998)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 5/98 (05/1998) . - p. 334-340 Titre : Colloid chemistry aids to formulating inks and paints Type de document : texte imprimé Auteurs : Jörg Schröder, Auteur Année de publication : 1998 Article en page(s) : p. 334-340 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Some classical formulation guidelines for paints and inks are reported and discussed from a colloidal viewpoint: rheology and dispersing apparatus; dosing of additives and bottle-shaking. These ideas help to optimize the mechanistic parameters such as particle size and pigment volume concentration of pigment dispersions. Then the solubility parameter concept is discussed as an energetic-colloidal aid in formulation work. This allows harmonization of the energetics of polymer, solvent and pigment in solvent-borne inks and paints in order to improve the distribution and stabilization of the pigments therein. Note de contenu : - Classical guidelines for formulation - Rheology at high and low shear rates - Flow behaviour and dispersing aggragates - Optimizing additive dosage - Testing by bottle-shaking - Interactions and the solubility parameter concept (SPC) - Applying the solubility parameter concept SPC to paint and inks Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11095 [article]

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