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Fumasep F-1075-PK is a Perfluorinated PK reinforced Cation Exchange Membrane (CEM) with low resistance, high mechanical stability, high selectivity and high chemical and oxidative stability. The perfluorinated sulfonic acid (PFSA) membrane's functional sites are based on long side chain (LSC) composition.
Fumasep F-1075-PK membrane comes in a 20cm x 30cm size sheet. The membrane is the colourless, transparent foil. The membrane is ready for use.
Fumatech membranes are highly sensitive to differences in humidity and moisture content. Therefore the membranes can vary +/- 0.5cm from the original cut sizes. Also due to this sensitivity the manufacturer expects wrinkles to form, however soaking the membranes in deionized water will return the membranes to the full size planar state according to the manufacturer.
• Applications: Redox-Flow Battery, e.g. Vanadium-Redox-Flow Battery (VRB), using aqueous acidic conditions.
• Cation Exchange Membrane (CEM)
• Thickness: 75 micrometers (2.95 mil)
• Size: 20cm x 30cm
Keep membrane package closed / sealed when unused. Store, handle and process the membrane in a clean and dust-free area. Use only new and sharp knives or blades, when cutting the membrane. Always wear protective gloves when handling the membrane. Handle with care, be sure not to puncture, crease or scratch the membrane, otherwise leaks will occur. All surfaces in contact with the membrane during handling, inspection, storage and mounting must be smooth and free of sharp projections.
The membrane is delivered in dry form and H form. The membrane does not need any pretreatment and is ready for use. Please assemble the membrane in dry form.
If you have any concerns about storage, chemical stability, pre-treatment or before proceeding, please feel free to contact us for further information.
The membrane can be stored dry for an unlimited amount of time. However, the membrane has to be conditioned (washed and rinsed) prior to use.
Please note that a current lead time of one to two weeks is to be expected.
|Membrane||Cation Exchange Membrane|
|Thickness||70 - 80 µm (microns)|
|Appearance / Color||Transparent / Colorless|
|Backing Foil||Between Paper|
|Tensile Strength - max. (MPa)||40 - 45 MPa|
|Density||13 - 14 mg•cm-2|
|Non-Std Modulus (MPa)||400 - 450 MPa|
|Elongation to Break (%)||> 30 %|
|Specific Area Resistance||0.15 (in 0.5 M H2SO4) Ω•cm2|
|Specific Conductivity||0.5 - 0.6 (in 0.5 M H2SO4) mS•cm-1|
|Ion Exchange Capacity||0.8 - 0.9 meq•g-1|
|Selectivity||> 97 %|
|Uptake in H2O at 25°C||10 - 15 in 2M H2SO4 and 7 - 10 in vanadyl sulfate wt %|
|Dimensional Swelling in H2O at 25°C||0 in 2M H2SO4 and 0 in vanadyl sulfate %|
|Proton Transfer Rate||> 8000 µmol•min-1•cm-2|
|Bubble Point Test in Water at 25°C||> 3 bar|
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