| Titre : |
Rheological behaviour of automotive paint systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Michael Osterhold, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 18-33 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this paper the most important measuring methods for studying the rheological behaviour of modern paint systems (oscillation tests, determination of low yield points) are described. These methods were at first used to describe the rheological/physical properties of model polyurethane microgels. The measured values for storage modulus, phase shift and yield point in waterborne pearlescent/coloured pigment systems were compared with flop-index values. The results show good correlations between the observable effect and the rheological parameters of the liquid paint. Also measurements of powder and electrodeposition coatings and clearcoats with the oscillation technique to determine the viscosity-temperature behaviour correlate well with technical properties of the final films. |
| Note de contenu : |
1. Oscillation test results translate to characteristic differences of the materials
2. Rheological characterisation of model microgels : Frequency sweeps show characteristic behaviour of samples - Temperature sweep measurements reveal severe differences - Viscosity curves of microgels
3. Automotive coatings exhibit a characteristic lightness flop : A high flop index means a good effect - Results show some fundamental relationships
4. Measurements of viscosity-temperature behaviour : Powder coatings (Rheological behaviour of powder coatings depends on the heating rate - Viscosity and surface structure) - Electrodeposition coatings - Clearcoats
5 Good correlation of rheological parameters and flop effects |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10988 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 18-33
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Rheological behaviour of automotive paint systems in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)
