|
|||||
|
|
Time and cost effective methods for testing chemical resistance of aluminium metallic pigmented powder coatings |
|
| Authors: | Jostein Mårdalen John Erik Lein Helene Bolm Merete Hallenstvet Volker Rekowski |
| Affiliation: | 1. SINTEF Petroleum Research, N-7465 Trondheim, Norway;2. SINTEF Materials and Chemistry, N-7465 Trondheim, Norway;3. DuPont Powder Coatings Scandinavia AB, S-593 25 Västervik, Sweden;4. Hydro Aluminium Rolled Products AS, P.O. Box A, N-3081 Holmestrand, Norway;5. DuPont Performance Coatings GmbH, Horbeller Street 15, D-50858 Köln, Germany |
| Abstract: | Polyester based powder coatings containing different types of aluminium metallic flake pigments have been investigated with respect to their chemical stability in acid environments. The metallic flakes are made chemically stable by covering them in silica. The degree of silica coverage and the silica morphology are far more important for the chemical stability of the pigments than the silica thickness. The acid resistance of the final powder coating is found to depend on the pigment embedment depth, on the chemical composition and morphology of the powder coating, and on the silica coating of the pigment. The latter being the single most important factor in our study. |
| Keywords: | Powder coatings Chemical stability Metallic pigments Pigment coating |
| 本文献已被 ScienceDirect 等数据库收录！ | |