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Nylon separatorsA nylon separator was placed in a flooded condition in K0H solution and heated at various high temperatures ranging from 60 C to 110 C. The weight decrease was measured and the molecular weight and decomposition product were analyzed to determine: (1) the effect of K0H concentration on the hydrolysis rate; (2) the effect of K0H concentration on nylon degradation; (3) the activation energy at different K0H concentrations; and (4) the effect of oxygen on nylon degradation. The nylon hydrolysis rate is shown to increase as K0H concentration is decreased 34%, giving a maximum rate at about 16%. Separator hydrolysis is confirmed by molecular weight decrease in age of the batteries, and the reaction of nylon with molecular oxygen is probably negligible, compared to hydrolysis. The extrapolated rate value from the high temperature experiment correlates well with experimental values at 35 degrees.
Document ID
19790013426
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lim, H. S.
(Hughes Research Labs. Malibu, CA, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Publication Information
Publication: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop
Subject Category
Energy Production And Conversion
Accession Number
79N21597
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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