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Fumasep FAAM-15 is an anion exchange membrane - non-reinforced with low resistance, high selectivity, and high stability in acidic and caustic environment.
Fumasep FAAM-15 membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet.
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: Alkaline Electrolysis using liquid aqueous KOH
• Cation Exchange Membrane
• Operation Range: 6 - 12 M KOH, Temperature RT - 100 ºC
• Thickness (dry): 13 - 17 micrometers (0.51 - 0.67 mil)
• Sizes: 10cm x 10cm, 20cm x 30cm
The membrane is the thin brown foil, delivered on a backing foil (colourless rigid PET foil). Pull off carefully the membrane (brown) from the backing foil. The membrane is delivered in dry form.
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.
No specific pretreatment required. The membrane is self-activating in the cell after contact with aqueous caustic electrolyte (e.g. 6 - 9 M aqueous KOH solution) within several hours.
Depending on cell design, activation may also be done before assembling: Put the membrane sample between stabilizing meshes (in order to avoid curling) in aqueous KOH solution (concentration according to application) for at least 24 hrs at room temperature. Use closed container to avoid CO2 contamination (carbonate formation that may affect conductivity). Membranes must be covered by KOH solution. Membranes will expand when subject to swelling process. The hydration level can be controlled by KOH concentration and temperature, e.g. 9 M KOH solution at room temperature leads to approx. 50 - 70 wt% hydration level.
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||Anion Exchange Membrane|
|Thickness||13 - 17 µm (microns)|
|Appearance / Color||Dark Yellow to Brown, Transparent|
|Tensile Strength - max. (MPa)||> 100 MPa|
|Elongation to Break (%)||> 30|
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