'Zero emission' clearcoat systems are always an issue for the automotive industry. Powder slurry is a coating powder dispersed in water and combines the positive properties of wet paints and coating powders, such as good leveling at low film builds and minimum solvent content. With an average particle size of 3 micron and a solids content of 35 % - 38 %, the slurry has a good sedimentation stability. The solvent content is close to zero. Application is by conventional application equipment for solvent- or water-borne products. This is the most important advantage for the car manufacturer when powder slurry is applied. The circulation line requires only slight modification. During pre-drying, at least 95 % of the water is evaporated. The baking is 20 minutes at above 140 deg C panel temperature. The resulting clearcoat has very good appearance and long-term stability. The powder slurry clearcoat technology has been developed in cooperation with Daimler Benz and Dürr as a new approach to 'zero emission' clearcoat technology and is being used for the first time in the completely new coating process that has been set up at Rastatt for the Mercedes A class.
Powder slurries for automotive OEM finishing
Lösungsmittelarmer Pulverbeschichtungs-Schlicker für Automobil-Anwendungen
1998
7 Seiten, 3 Bilder, 3 Tabellen
Aufsatz (Konferenz)
Englisch
Lack , Automobilindustrie , Karosserie , Pulver , Beschichtung (Überzug) , Wasser , Korngröße , Lösungsmittel , Trocknen , Wärmebehandlung , Betriebsdauer , Morphologie , chemische Beständigkeit , Kratzfestigkeit , Glanz , Schlicker , Schadstoffbelastung , Luftverschmutzung , Innovation , Pulverbeschichten
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