FREMGANGSMAATE FOR FREMSTILLING AV ET ION-PERMEABELT DIAFRAGMA

摘要

Improved diaphragms for electrolytic cells which comprise a woven organic fabric embedded in a film forming mixture consisting of a particulate inorganic hydrophilic material and an organic polymeric binder as well as a method of producing the same which comprises the steps of i) intimiately mixing the particulate inorganic hydrophilic material with a solution of the polymeric binder in an appropriate solvent to form a slurry; ii) uniformly spreading said slurry on an inert flat surface to form a wet sheet; iii) immersing the stretched organic fabric into the wet sheet; iv) allowing the solvent to evaporate and optionally further eluting the solvent, and v) removing the dry sheet from the flat surface.