Characterisation of coatings and coating materials by analytical centrifugation / U. Rietz in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4650 (04/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4650 (04/2019) . - p. 40-43 Titre : Characterisation of coatings and coating materials by analytical centrifugation Type de document : texte imprimé Auteurs : U. Rietz, Auteur ; T. Sobisch, Auteur ; D. Lerche, Auteur ; Arnold Uhl Lerche, Auteur Année de publication : 2019 Article en page(s) : p. 40-43 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Anticorrosifs Anticorrosion Caractérisation Centrifugation Epoxydes Métaux -- Revêtements protecteurs Revêtements -- Analyse Revêtements organiques Sédimentation Index. décimale : 667.9 Revêtements et enduits Résumé : Most finished products have coated surfaces for varions reasons. Building constructions have to withstand manifold external influences, eg temperature and humidity, UV radiation or erosion caused by rain. Cutting tools like drills are exposed to high mechanical stress. To extend the work life, their surfaces are often modified with protective coatings. Coating systems for car bodies have to protect metal substrates from corrosion but also provide an appealing appearance. As the mentioned examples show, most coatings have to fulfil a combination of different requirements. The paper introduces CAT-Technology, (Centrifugal Adhesion Testing), which allows for testing eight samples under identical conditions. Among other application examples, the curing behaviour of corrosion protection paints will be highlighted. As a complimentary tool to CAT-Technology analytical centrifugation based on STEP Technology® is suggested for coating laboratories. This proved to be a powerful instrument for characterisation of base materials and finished products. Other aspects to be considered are coating materials properties from composition/formulation over production until application to final product surfaces. Note de contenu : - Measurement principle-cat-technology - Preparation of test specimens - Experimental - Anti-skid coatings - Epoxy paints for corrosion protection - Step technology - Fig. 1 : Measurement principle of CAT-technology - Fig. 2 : Joining a test specimen - Fig. 3 : RPM and temperature progression during a measurement - Fig. 4 : Strength obtined for anti-skid coatings - Fig. 5 : Failure pattern - cohesive failure within coating - Fig. 6 : Failure pattern - Fig. 7 : Strength development and comparison - Fig. 8 : NIR-transmission profiles for pigment dispersed by laboratory stirrer (upper two) and pigment disperses in a ball mill (lower two), RCA 30, 20°C. Region of interest 7 mm below cell filling height at 106 mm shown. First profile after 10s red, last profile after 40min green - Fig. 9 : Sedimentation velocities of the samples, mean RC1 30, 20° - Table 1 : Masses of components - Table 2 : Paint preparation details - Table 3 : Strength paint A - Table 4 : Strength paint B En ligne : https://drive.google.com/file/d/1WvW88zrwHain2i1ROoxjIb3-CdShBaf4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32603 [article]

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