| 摘要 |
PURPOSE:To obtain a diaphragm for electrolysis having superior dimensional stability and mechanical strength and used in a halogen-zinc cell or the like by uniformly sticking a perfluoror type ion exchange resin to a polytetrafluoroethylene resin film having a specified porosity. CONSTITUTION:A perfluoro type ion exchange resin is uniformly impregnated into or stuck to a polytetrafluoroethylene resin film having >=35%, especially >=40% porosity by 10-30%, and the resulting membrane of 204n504mm thickness is used as a diaphragm for electrolysis used in a halogen-zinc cell or an alkaline cell. The diaphragm has superior mechanical strength even under dry conditions, lowers hardly the electric resistance by reduction in thickness and also has superior coulomb efficiency. |
