| Titre : |
On the road improved scratch resistance |
| Type de document : |
texte imprimé |
| Auteurs : |
Ulrich Meier-Westhues, Auteur ; Thomas Klimmasch, Auteur ; Jörg Tillack, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 28-34 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
PUR clearcoats excelby their high resistance against acid rain (etching) and other chemicals. The appropriate selection of polyol and polyisocyanate allows deliberate control of hardness, glass transition temperature and resistance features. With increasing hardness e.g. the etch resistance rises and the scratch resistance reduces. Overcoming this difficulty of diverging scratch resistance and etch resistance will only be possible through increasing the cross-linking density while at the same time keeping a low Tg. The use of tailor-made polyols could lead to car clear coatings with increased scratch resistance in a relatively short time. |
| Note de contenu : |
- With increasing hardness the etch resistance rises and the scratch resistance by contrast falls
- Nano scratch method allows differentiation between plastic deformation and fracture
- Concept : To increase the cross-linking density in the film and to keep the Tg largely constant |
| En ligne : |
https://drive.google.com/file/d/1WcEY-f1dg3RFbkLOusx6C15JAACCzgDu/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10714 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 9/02 (09/2002) . - p. 28-34
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