Cation exchange membranes are selective membranes of cations, usually sulfonic acid type, with immobilised groups and cleavable ions. For example, the sodium-type sulfonic acid-type immobilisation group is sulfonate, and the dissociation ion is sodium ion. . The cation exchange membrane can be regarded as a kind of polymer electrolyte. Since the positive membrane is negatively charged, although the original dissociated positive ion is dissociated into the water by the action of water molecules, it is energized by the electric field outside the membrane and is positively charged. The cations can pass through the positive film, while the anions cannot pass because of homosexual rejection, so they have selective permeability.
The perfluorinated cation exchange membranes are produced with the new casting method, the casting process can be combined with doping technology,we add new fluororesin mixing formula with good vanadium resistance in the casting process, the Ion-Exchange Membrane has high tensile strength, isotropic, high electrical conductivity, good chemical properties, and so on.
Technical Specifications(Reference Standard):
Item |
Index |
Testing Method |
Linear expansion rate |
2% ( 23℃, from 50% RH to water soaked ) |
ASTM756 |
Tensile modulus |
630 MPa ( 23℃, 50% RH, Isotropy) |
ASTMD882 |
Tensile strength |
35 MPa ( 23℃, 50% RH, Isotropy) |
ASTMD882 |
Water content |
25±5% ( 100℃, 1h ) |
ASTMD570 |
Electrical conductivity |
0.1 S/cm |
25℃,zawodzi nski |
Operating temperature |
5-120 |
|
PH value |
1--14 C |
|
Acid Capacity |
1.0 meq/g |
Thickness and Weight:
Thickness（μm） |
Weight（g/m2） |
30 |
60 |
40 |
80 |
50 |
100 |
60 |
120 |
80 |
160 |
100 |
200 |
125 |
250 |
150 |
300 |
175 |
350 |
190 |
290 |
200 |
400 |
220 |
440 |
250 |
500 |
280 |
560 |
350 |
700 |
Remarks:The thickness is approximate number, we do not assure absolute precision. Please contact with our salesman if special thickness is requested.
Applications:
Our Perfluorinated Ion-Exchange Membrane SY-12P is particularly suitable for use as a solid electrolyte membrane in Proton Exchange Membrane (PEM) fuel cells, water electrolyzers,vanadium cells, electrolytic cells, electrodialysis, electrochemical sensors, and so on.The membrane performs as a separator and solid electrolyte in a variety of electrochemical cells that require the membrane to selectively transport cations across the cell junction. The polymer is chemically resistant and durable.
Packing:
Our Perfluorinated Ion-Exchange Membrane has sheet and continuous roll:
Sheet material standard size:600mm*600mm;800mm*800mm;1000mm*1000mm
Continuous Roll: 800mm width and 680mm with continuous roll
We can also provide special customized size according to your requirement.
Standard packing is packaging the PIEM in plastic drum or bucket.