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3860716 
Journal Article 
LUBRICATION PERFORMANCE OF PERFLUOROPOLYALKYLETHERS UNDER HIGH-VACUUM 
Masuko, M; Fujinami, I; Okabe, H 
1992 
1 
Wear
ISSN: 0043-1648
EISSN: 1873-2577 
159 
2 
249-256 
WOS:A1992KD61700011 
The tribological properties of three types of commercially available perfluoropolyalkylethers (PFPEs) were measured under vacuum using a vacuum four-ball friction apparatus with 440C stainless steel balls as test specimens. A non-fluorinated polyalkylether was also used as a reference, and it showed high friction and wear at atmospheric pressure due to local seizure, while PFPEs did not. On the contrary, PFPEs showed high wear under vacuum at high load while maintaining low friction coefficients. Derivatives of PFPE, i.e. carboxylic acid, alcohol and phosphate, were also studied. The lubrication mechanism of PFPE can be explained using the analogy of ordinary EP additives, considering their reactivity with the surface. 
PFAS
• Expanded PFAS SEM (formerly PFAS 430)
     Perfluoropentanesulfonate
• ^Per- and Polyfluoroalkyl Substances (PFAS)
     PFPeS (2706-91-4)
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               WOS
• PFPeS
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