Hygrothermal aging of nafion
Web1 apr. 2011 · The biaxial hygrothermal mechanical behavior was measured, and an … WebArticle “Influence of hygrothermal aging on the gas and water transport properties of …
Hygrothermal aging of nafion
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WebShort-side-chain (SSC) perfluorosulfonic acid ionomers of different ion exchange capacity, IEC, (Dow 840 and Dow 1150) are characterized with respect … Web15 sep. 2013 · DOI: 10.1016/J.JPOWSOUR.2013.03.042 Corpus ID: 95648093; …
WebNafion® in-situ aging in fuel cell did not lead to determine a degradation mechanism. That …
Web20 okt. 2015 · @article{osti_1329879, title = {Impact of hygrothermal aging on … WebThe ratio of freezable/nonfreezable water in prestretched recast Nafion, the water electro …
Web26 mei 2024 · More severe is the hygrothermal aging condition, more is the degradation in mechanical properties. Transverse tensile strength reduced significantly by about 31% and longitudinal compression strength by about 8% due to absorbed moisture in severe condition of 55°C/100% RH among those under study.
Web10 okt. 2015 · In addition, mechanical degradation of Nafion NR-211 membrane was investigated by our group 12 through conducting ex-situ uniaxial fatigue-fracture experiments under a range of temperature and humidity conditions. ... Study on the hygrothermal aging behavior and diffusion mechanism of Ti/CF/PMR polyimide … table of q valuesWebImpact of Hygrothermal Aging on Structure/Function Relationship of Perfluorosulfonic … table of pythagoras premium qualityWebIon transport through perfluorosulfonic acid ionomers such as Nafion® is controlled by both the microstructure of the polymer and the charge and water distribution in the hydrated polymer. We present here the results of theoretical calculations on the side chain of Nafion®, establishing microscopic information for the modeling of water and proton … table of q functionWebNafion ® membranes stored for long periods at 80 °C under elevated relative humidity up to 95%RH exhibit large modifications of their properties attributed to the sulfonic acid end-group condensation into sulfonic anhydrides. table of qmWeb2 mrt. 2024 · Because hygrothermal aging involves simultaneous plasticization and physical aging, the condition of the material after the manufacturing process is also checked essentially. For this purpose, the initial (briefly dried) material as it is used also in composite manufacturing is compared with the artificial state mostly free of any relaxation and … table of pythagorasWeb1 feb. 2014 · The hygrothermal aging process was faster for Nafioe 112 membranes … table of qualification levelsWebAlthough widely used as proton-exchange membranes (PEMs), perfluorosulfonic acid (PFSA) membranes suffer from critical mechanical degradation under alternating wet/dry conditions. A common method for improving the mechanical durability of PFSA membranes is to intercalate single-layer expanded polytetrafluoroethylene (ePTFE). As reinforcement … table of quarks