Summaries
An outstanding characteristic of fluorocarbon substitution in polymers is the potential for obtaining coatings of very low surface energy. The low degree of fluorination in the most familiar fluorosiloxane, polymethyltrifluoropropylsiloxane (PMTFPS) is insufficient to attain this end. PMTFPS is of comparable surface energy to polydimethylsiloxane (PDMS), with similar uses that particularly exploit its solvent resistance characteristics. An exciting trend in fluorosiloxanes is the increasing interest in materials with a higher degree of fluorination than PMTFPS. These polymers have lower surface energies than PDMS with potential for a variety of PDMS surface modification and novel coating applications.
Résumé
Une remarquable caractéristique de la substitution fluorocarbone dans les polymères est le potentiel offert dans le domaine de la production des revêtements qui ont une très basse énergie de surface. Le bas degré de fluorisation dans le fluorosiloxane le plus familier, polyméthyltrifluoropropylsiloxane (PMTFPS) n’est pas assez élevé pour atteindre ce but. Le PMTFPS a une énergie de surface qui est comparable à celle du polydiméthylsiloxane (PDMS) et offre des utilisations similaires, utilisations qui exploitent surtout ses caractéristiques dans le cadre de la résistance aux solvants. Un développement très prometteur en ce qui concerne les fluorosiloxanes est représenté par l’intérêt qui est manifesté pour les matériaux qui ont un degré de fluorisation plus élevé que celui du PMTFPS. Ces polymères ont une énergie de surface qui est plus basse que celle du PDMS et montrent la possibilité de modifier la surface du PDMS d’une variété de manières, tout en offrant de nouvelles applications pour les revêtements.
Zusammenfassung
Eine herausstechende Eigenschaft der Fluorocarbon-Substitution in Polymeren ist die Möglichkeit, Lacke mit einer sehr niederen Oberflächenenergie herzustellen. Die gängisten Fluorosiloxane, Polymethyltrifluoropropylsiloxane (PMTFPS), sind für diesen Zweck wenig geeignet, da sie nur einen geringen Grad der Fluorination zulassen. PMTFPS haben eine ähnliche Oberflächenenergie wie Polydimethylsiloxane (PDMS) und haben vergleichbare Anwendungen, die vor allem ihre Lösungsmittelresistenz ausnutzen. Ein interessanter Trend bei Fluorsiloxanen ist das steigende Interesse in Materialien mit einer geringeren Oberflächenenergie als PMTFPS. Diese Polymere haven deutlich niedere Oberflächenenergien als PDMS mit dem Potential für mehrere PDMS Oberflächenveränderungen und neuen Anwendungen in Farben und Lacken.
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Owen, M. A review of significant directions in fluorosiloxane coatings. Surface Coatings International Part B: Coatings Transactions 87, 71–76 (2004). https://doi.org/10.1007/BF02699599
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DOI: https://doi.org/10.1007/BF02699599