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    • 6. 发明公开
    • ION EXCHANGE MEMBRANE FOR ALKALI CHLORIDE ELECTROLYSIS, AND ALKALI CHLORIDE ELECTROLYSIS APPARATUS
    • IONENAUSTAUSCHERMEMBRANFÜRALKALICHLORID-ELEKTROLYSE UND ALKALICHLORID-ELEKTROLYSEVORRICHTUNG
    • EP3184671A4
    • 2017-08-23
    • EP15834315
    • 2015-08-20
    • ASAHI GLASS CO LTD
    • KANEKO TAKAYUKIKUSANO HIROMITSUYAMAKI YASUSHINISHIO TAKUO
    • C25B1/46B01J39/00B01J39/20B01J47/12C08J5/22C25B13/08
    • C25B13/08B01J39/20B01J47/12C08J5/22C08J5/2281C08J2327/18C08J2329/10C08J2427/18C08J2467/00C25B1/46C25B9/00
    • To provide an ion exchange membrane for alkali chloride electrolysis, which has low membrane resistance and which reduces the electrolysis voltage during alkali chloride electrolysis, even if the spacing between reinforcing yarns is made narrow to increase the membrane strength. This ion exchange membrane 1 for alkali chloride electrolysis comprises a fluoropolymer containing ion exchange groups; a reinforcing material embedded in the fluoropolymer and formed of reinforcing yarns and optionally contained sacrificial yarns; and elution holes of the sacrificial yarns present between the reinforcing yarns, wherein in a cross section perpendicular to the length direction of the reinforcing yarns forming the reinforcing material, the average distance (d1) from the center of a reinforcing yarn 22 to the center of the adjacent reinforcing yarn 22 is from 750 to 1,000 µm, the total area (S) obtained by adding the cross-sectional area of an elution hole 28 and the cross-sectional area of a sacrificial yarn 24 remaining in the elution hole 28 is from 500 to 5,000 µm 2 per elution hole, and the number n of elution holes 28 between adjacent reinforcing yarns 22 is from 4 to 6.
    • 为了提供碱金属氯化物电解用的离子交换膜,即使增强线之间的间隔变窄以增加膜强度,其具有低的膜电阻并降低碱金属氯化物电解期间的电解电压。 该碱金属氯化物电解用离子交换膜1包含含有离子交换基团的含氟聚合物, 嵌入含氟聚合物中并由增强纱线和任选含有牺牲纱线形成的增强材料; 和存在于增强纱线之间的牺牲纱线的洗脱孔,其中在与形成增强材料的增强纱线的长度方向垂直的横截面中,从增强纱线22的中心到中心的平均距离(d1) 相邻的增强纱线22为750〜1000μm,将洗脱孔28的截面积与留在洗脱孔28内的牺牲纱线24的截面积相加得到的总面积(S)为 每个洗脱孔500-5,000μm2,并且相邻增强纱线22之间的洗脱孔28的数量n为4-6。