| Titre : |
Who shines the longest ? : 95 automotive clearcoat systems were tested with dry and wet scratching - before and after weathering - and for their chemical resistance The tests of this benchmark study revealed considerable differences between the systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Markus Mechtel, Auteur ; Tanja Hebestreit, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 28-35 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Automobiles -- Vernis
Essais de résilience
Rayures
Résistance à l'abrasion
Résistance chimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Clearcoats form the outermost of usually fourlayers in automotive OEM coatings. In 2019, around 310 000 metric tons of clearcoat were consumed worldwide for this purpose. 40% were two-component (2K) polyurethane (PU) coatings, 390% one-component (1K) TSA coatings (thermosetting acrylics). The remainder was divided among 1K technologies of various chemistry, namely acid-epoxy, carbamate and PU-modified TSA systems. |
| Note de contenu : |
- The tests
- Wet scratched : the result
- Table 1 : Participating coating systems
- Table 2 : Wet scratching of non-weathered automotive clearcoats (2K systems : green background, 1K systems : blue background)
- Fig. 1 : Number of coatings tested, ordered by chemical technology
- Fig. 2 : Wet scratching of the unweathered paint surfaces, before and after 2h heating to 60°C
- Fig. 3 : Wet scratching before and after 1000 h weathering
- Fig. 4 : Dry scratching for all 2K PU systems investigated
- Fig. 5 : Nano-scratch tests for all tested automotive clearcoats
- Fig. 6 : Test for chemical resistance, classified according to exposed chemicals and chemical technologies of the coatings |
| En ligne : |
https://drive.google.com/file/d/1ozXnvCQMhZgFsdR4E17cxskvkolUYItI/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35854 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5 (05/2021) . - p. 28-35
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Who shines the longest ? in EUROPEAN COATINGS JOURNAL (ECJ), N° 5 (05/2021)
