Fundamental properties and anti-soiling behaviour of vinyl ether functional polydimethylsiloxanes for photocationically cured coatings
| Autor: | F. Cazaux, X. Coqueret |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Telechelic polymer
Materials science General Chemical Engineering technology industry and agriculture Cationic polymerization Surfaces and Interfaces engineering.material Vinyl ether Surfaces Coatings and Films Contact angle chemistry.chemical_compound Silicone chemistry Coating Chemistry (miscellaneous) Polymer chemistry engineering medicine Wetting Functional polymers medicine.drug |
| Zdroj: | Surface Coatings International Part B: Coatings Transactions. 84:127-134 |
| ISSN: | 1476-4865 |
| Popis: | Telechelic polydimethylsiloxanes (PDMS) were modified by divinyl ethers to yield reactive surfactants that can be polymerised together with conventional monomers by cationic photopolymerisation. A series of these tailor-made functional polymers was incorporated into expoxide/vinyl ether formulations. PDMS additives effectively improved the wetting properties of these formulations applied to various substrates. Contact angle measurements showed a significant reduction in the surface energy for cured coatings containing the silicone additive. The presence of the reactive PDMS (0.25 – 5 wt-%) was also shown to impart stain-resistance properties. Long-term anti-graffiti effects were studied in comparison with reference formulations. An ESCA (Electron Spectroscopy for Chemical Analysis) study revealed the high silicone density in the top layer of the coating. |
| Databáze: | OpenAIRE |
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