COMPOSITE MEMBRANE BASED ON IMPROVED FLUORINE-CONTAINING PROTON- OR ION-EXCHANGE MEMBRANE, COMPOSITE MEMBRANE ELECTRODE, IMPROVED FLUORINE-CONTAINING CHLOR-ALKALI ACCUMULATOR MEMBRANE, SEPARATING MEMBRANE AND METHOD OF THEIR PREPARATION Russian patent published in 2024 - IPC H01M8/1018 

FIELD: production of composite materials.

SUBSTANCE: invention relates to a composite membrane based on a fluorine-containing proton- or ion-exchange membrane, a composite membrane electrode, fluorine-containing chlor-alkali accumulator membrane, separating membrane and methods of their preparation. Composite membrane based on a fluorine-containing proton- or ion-exchange membrane contains at least two layers of microporous reinforced membranes, in which both sides of each layer of the microporous reinforced membranes are filled with a fluorine-containing proton- or ion-exchange resin, the biaxial tensile strength of the composite membrane is more than 40 MPa, ionic conductivity at room temperature is more than 0.007 S/cm, the time required for passage of 100 ml of air through the composite membrane is more than 5 minutes.

EFFECT: simple process of preparing an exchange membrane without contamination with a separating agent, and continuous production.

11 cl, 18 ex