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Fumapem AM-40 is a non-reinforced Polybenzimidazole Copolymer membrane designed for use in High-Temperature Proton Electrolyte Fuel Cells (HT-PEMFC). The polymer backbone for this HT-PEMFC membrane is categorized as a hydrocarbon polymer material.
Fumapem AM-40 membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet. The membrane is the brown foil delivered in dry form.
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: High-Temperature PEM Fuel Cell (HT-PEMFC).
• Thickness: 40 micrometers (1.57 mil)
• Sizes: 10cm x 10cm, 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.
Put the membrane sample in 85 wt % H3PO4 at temperatures between 90°C and 160°C for at least 1 hour. Membranes must be covered by phosphoric acid. Membranes will expand when subject to doping process.
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.
|Thickness||40 µm (microns)|
|Appearance / Color||Transparent / Brown|
|Tensile Strength - max. (MPa)||> 150 MPa|
|Non-Std Modulus (MPa)||2500 - 4500 MPa|
|Yield Strength at 23°C / 50 % R.H.||> 150 MPa|
|Elongation to Break (%)||> 30 %|
|Residual Solvent / Additive Content||< 2 %|
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