Assessment of the weathering of protective coatings using x-ray photoelectron spectroscopy
Conference
·
OSTI ID:141846
- Sherwin Williams Co., Cleveland, OH (United States)
Three fully formulated coatings systems: polyurethane, alkyd and latex, were exposed either outdoors to a natural industrial atmospheric environment or to an accelerated corrosion/weathering test incorporating UV-condensation exposures and wet/dry corrosion cycling or to an RF generated {open_quotes}in-glow{close_quotes} oxygen plasma. Changes in coating surface chemistry as a function of time in each environment were followed using X-ray photoelectron spectroscopy (XPS). XPS detected changes in the surface composition of all three systems for all three environmentS. Some of the trends in degradation detected on the exterior exposed samples were reproduced by both accelerated tests. The data obtained from this study also suggested that the corrosion/weathering test would benefit from an increase in the amount of UV exposure over that which is currently used. Oxygen plasma etching also appears to have some potential as a tool for accelerated weathering of paint systems.
- OSTI ID:
- 141846
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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