Membrane mounting method and membrane-enclosed amperometric cell

Details Membrane mounting method and membrane-enclosed amperometric cell Membrane mounting method and membrane-enclosed amperometric cell

1980-06-30

1982-04-20

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

29235, 29592R, G01N 2730

Patent

active

043257976

ABSTRACT:
A method of mounting and securing a membrane of polymer film on an amperometric cell that has a cylindrical cell end provided with an electrolyte-bearing sensor face; the holding member is a substantially non-resilient and creep-resistant die ring, having a cylindrical inner surface that fits onto the cylindrical cell end; at least one tapered inner surface portion extends outwardly toward a leading end of the die ring; the leading end is moved over the cell end whereby the polymer film is deep-drawn between the die ring and the cylindrical cell end and is permanently shaped to form a cup-shaped membrane portion sealingly held by the die ring on the cylindrical cell end during operation of the amperometric cell.
An amperometric cell having a cylindrical cell end frontally provided with sensor face, a membrane formed of a flexible polymer film and extending over the sensor face; the membrane is in contact with the cylindrical cell end; a holding member is arranged around the membrane; the holding member is a non-resilient and creep-resistant die ring having a cylindrical inner surface fitting onto the cylindrical cell end and at least one tapered inner surface portion outwardly extending toward a leading end of the die ring; the membrane has a permanently formed cup-shaped portion sealingly held by the die ring on the cylindrical cell end during operation; the die ring can be removed, e.g., for cell maintenance and reused for applying and shaping a fresh membrane.

REFERENCES:
patent: 3259124 (1966-07-01), Hillier et al.
patent: 3835014 (1974-09-01), Huffhines

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