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Syntheses and degradations of fluorinated heterocyclicsThe relative stability of two ring systems, the triazine rings and 1,2,4-oxadiazoles, which offer potential crosslinks useful for curing perfluoroalkyl ether elastomers, has been investigated. Tris (perfluoro-n-heptyl)-s-triazine, the perfluoroether substituted-s-triazine, 1,4-bis/(5-perfluoro-n-heptyl)-1,2,4-oxadiazolyl/benzene, its perfluoroalkyl ether substituted analog, and 3,5-bis-(perfluoro-n-heptyl)-1,2,4-oxadiazole were synthesized and subjected to thermal and oxidative degradation at 235 and 325 C and to hydrolytic degradation at 235 C. The perfluoroalkyl ether substituted triazine and 3,5-bis(perfluoro-n-heptyl)-1,2,4-oxadiazole were found to be stable under all conditions investigated.
Document ID
19760047729
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Paciorek, K. L.
(NASA Ames Research Center Moffett Field, CA, United States)
Kratzer, R. H.
(NASA Ames Research Center Moffett Field, CA, United States)
Kaufman, J.
(Ultrasystems, Inc. Irvine, Calif., United States)
Rosser, R. W.
(Ultrasystems, Inc., Irvine; NASA, Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Chemistry And Materials (General)
Accession Number
76A30695
Funding Number(s)
CONTRACT_GRANT: NAS2-7981
Distribution Limits
Public
Copyright
Other

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