Film formation of coatings studied by diffusing-wave spectroscopy
| Autor: | Alice Brun, Hélène Dihang, Laurent Brunel |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Diffusing-wave spectroscopy
Materials science General Chemical Engineering Optical engineering Organic Chemistry Analytical chemistry Substrate (printing) engineering.material Evaporation (deposition) Surfaces Coatings and Films Characterization (materials science) Chemical engineering Coating Scientific method Materials Chemistry engineering Spectroscopy |
| Zdroj: | Progress in Organic Coatings. 61:181-191 |
| ISSN: | 0300-9440 |
| Popis: | The coating industry is facing nowadays a growth in environmental regulations, and imposed substitution of suspected toxic components or solvents and a constant need for improving performances. The new formulations undergo new film-formation processes, influencing the coating performance and appearance. We have studied the film-formation process of several coating systems (water-based and solvent-based) using a new optical technology based on diffusing-wave spectroscopy. This unique and simple technique allows a non-intrusive monitoring of the drying process on the appropriate substrate (concrete, metal, plastic, wood, etc.). The kinetics of film formation, displayed in real-time, provide a new vision of the successive steps of the mechanisms taking place (evaporation, packing, etc.) as well as accurate information on drying times such as open-time, for an in-depth characterization of the film-formation process. |
| Databáze: | OpenAIRE |
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