Conductive polyolefin sheet element

Details Conductive polyolefin sheet element Conductive polyolefin sheet element

1977-05-31

1978-11-07

Derrington, James H.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

252511, 260 4246, 428220, C08K 304, H01B 104

Patent

active

041247477

ABSTRACT:
An electrically conductive non-porous polyolefin composition comprising a homogeneous mixture of propyleneethylene copolymer containing 20 mol % to 35 mol % ethylene and at least 30 parts by weight of finely divided conductive carbon, e.g. carbon black, per 100 parts by weight of copolymer. This composition may be made by mixing under conditions of high shear, e.g. in a Banbury mixer, and at a temperature of at least 100.degree. C the propylene-ethylene copolymer and the finely divided conductive carbon, the mixing being continued until a homogeneous blend is obtained. A bi-polar sheet for an electrochemical cell may be formed by obtaining a homogeneous blend of polyolefin and finely divided conductive carbon by the above-mentioned process and thereafter forming the composition into the shape of a bi-polar plate.

REFERENCES:
patent: 3104945 (1963-09-01), Williams
patent: 3591526 (1971-07-01), Kawashima et al.
patent: 3673121 (1972-06-01), Meyer

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