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Flexible Pipes-Permeation of Methane, Carbon Dioxide and Water Through Tefzel ETFE : Experiments 1996

Author
Wang, Per Arne
Published
Apr. 18, 1997.
Physical Description
1 electronic document
Additional Creators
Hydro, Norsk
Online Version

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Summary
The permeation of a mixture of CH4 and CO2 (97% CH4 and 3% CO2) saturated with water vapour through Tefzel has been studied at 950 C and 25 and 50 bars. Tefzel is the Du Pont trademark of an ETFE (ethylenetetrafluorethylene) which is a copolymer of ethylene and tetrafluorethylene. This material might be used as inner plastic lining of flexible pipes. For methane and carbon dioxide, the permeability of Tefzel is higher than the deplasticized PVDF (Polyvinylidenefluoride), but lower than the plasticized PVDF. For water, the situation seems to be the other way round; Tefzel has a lower permeability than deplasticized PVDF. Whether the permeability tests on Tefzel at higher temperatures and pressures will be pursued or not, will be considered by the steering committee of the CAPP project in May.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19980029710.
NASA/CR-97-207615.
NAS 1.26:207615.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15645917