The invention relates to a low-resistance and high-strength
ion exchange membrane for the chlor-alkali industry and a preparation method of the low-resistance and high-strength
ion exchange membrane. The low-resistance and high-strength
ion exchange membrane is a multi-layer
composite membrane comprising a perfluorosulfonic
ion exchange resin layer, a perfluoropropionate
ion exchange resin layer, reinforced screen cloth and
gas release coatings, wherein the perfluorosulfonic
ion exchange resin layer with the thickness of 80-150 micrometers and the perfluoropropionate
ion exchange resin layer with the thickness of 8-12 micrometers form a perfluorosulfonic
ion exchange resin base membrane, the
gas release coatings with 3-12 micrometers are arranged on two outer side surfaces of the base membrane, the reinforced screen cloth is arranged in the perfluorosulfonic
ion exchange resin layer, and the perfluorosulfonic ion exchange resin layer is also internally provided with a nano pore and a nano cavity. The low-resistance and high-strength ion exchange membrane can be prepared through a melt co-extruding or multi-layer hot-pressing compounding process, can be used in an ion exchange membrane in the chlor-alkali industry, and has good
mechanical property and electrochemical performance.