Perfluoropolyethers surface properties

Reaction of TYZOR TPT with polyperfluoroalkylene ethers containing a carbonyl group produces a complex that is an excellent surface-treating agent, imparting improved surface wettabiUty and anticorrosion properties to metal surfaces (144). These complexes can be used by themselves, or as additives to perfluoropolyethers as vacuum pump oils, lubricant oils, or mold release agents. 

The surface treatment agent perfluoropolyether-modified silane, (III), was prepared by the author [1] and had improved water/oil repellency, chemical resistance, and antifouling properties. 

Morita M, Kubo M, Matsumoto M. Interfacial properties and emulsification in systems of perfluoropolyether/nonfluorinated oil/partially fluorinated oligomeric and polymeric compounds. Colloids Surfaces A Physicochem Eng Aspects 1996 109 183-194. 

The application of the cyclophosphazene N3P3(OC6H4F-4) (OC6H4CF3-3)e (n 2 code name X-IP) as a lubricant is well known. Comparative studies of the tribological properties of X-IP and ionic liquids of al-kylimidazolium tetrafluoroborates have shown a preference for the tetrafluo-roborates as lubricants. The interaction of X-IP with a carbon-coated head at the head-disk interface of hard disk magnetic storage systems in the presence of a perfluoropolyether (PFPE) lubricant, has been diseussed. Attention has been paid to the application of a novel lubricant (A20H) which consists of (234) as the major component and small quantities of (235). The new lubricant displays a lower mobility on carbon surfaces than hydroxyl-... 

Perfluoropolyethers (PFPEs) are a family of liquid fluoropolymers that have unique properties such as high thermal stability, low volatility, low 7g, chemical inertness, low friction coefficient. PFPEs have the properties of a good lubricant (lower surface energy, low volatility, and good oxidative stability) they are therefore used as lubricants in many applications such as in the aerospace industry [43]. The properties of PFPEs are influenced by their structural characteristics such as MW, MW distribution, type of end-groups, and the structure of the chain [44]. NMR spectroscopy is an ideal technique to study these features of the polymer. 

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