| Titre : |
Partially fluorinated automotive coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
William Graham, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 494-496 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Automobiles -- Industrie et Commerce
Chimie des surfaces
Fluoration
Fluoropolymères
Liants
Polyacrylates
Polyisocyanates
Revêtements
Tension superficielle
Vernis
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Customer expectations, environmental concerns, and increasing global competition have combined to bring about a great deal of change in automotive clearcoat technology. New product improvement expectations are continuously being added to the already high performance standards that have been achieved in the recent past. One of our areas of focus has been the development of new technology which can impart improved graffiti resistance and cleanability to current automotive and truck clearcoats. The surface properties of a new isocyanate cured clearcoat have been dramatically enhanced with this new technology that effectively places fluorinated components at the polymer/air interface of an acrylic coating. This has been achieved through the use of a novel free radical solution polymerization process which incorporates small amounts of a long chain perfluoroalkyl containing methacrylate monomer into the polymer backbone. Due to stratification of the fluorine-containing portion, a Teflon-like surface is achieved without compromising other desirable properties of the clearcoat. Surface energies of 12-14 dynes/cm have been obtained at very low levels of fluorine. Surface energy considerations have also required the development of a lightly fluorinated isocyanate. The development and analysis of this new technology will be discussed. |
| Note de contenu : |
- Synthesis of acrylic resin systems
- Surface tension of acrylated resins
- Fluorinated isocyanate development |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11406 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5/97 (05/1997) . - p. 494-496
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