首页> 外国专利> ACID-TYPE SULFONATE GROUP-CONTAINING POLYMER, LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE JOINT BODY, SOLID POLYMER FUEL CELL, AND ION EXCHANGE MEMBRANE FOR WATER ELECTROLYSIS

ACID-TYPE SULFONATE GROUP-CONTAINING POLYMER, LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE JOINT BODY, SOLID POLYMER FUEL CELL, AND ION EXCHANGE MEMBRANE FOR WATER ELECTROLYSIS

机译:含酸型磺酸盐基团的聚合物,液体组合物,固体聚合物电解质膜,膜电极接头体,固体聚合物燃料电池和用于水电解的离子交换膜

摘要

To provide an acid-type sulfonic acid group-containing polymer which is excellent in hydrogen gas barrier properties and hot water resistance and which generates less oligomer during production; a liquid composition and a polymer electrolyte membrane comprising this acid-type sulfonic acid group-containing polymer; and a membrane electrode assembly and a polymer electrolyte fuel cell provided with the polymer electrolyte membrane.;This acid-type sulfonic acid group-containing polymer is a polymer which has perfluoromonomer units, no monomer units having a halogen atom other than a fluorine atom, and acid-type sulfonic acid groups, and of which the hydrogen gas permeability coefficient under the conditions of a temperature of 80°C and a relative humidity of 10%, is at most 2.5×10-9 cm3·cm/(s·cm2·cmHg), and the mass reduction rate when being immersed in hot water at 120°C for 24 hours is at most 15 mass%, wherein the TQ value of a polymer having fluorosulfonyl groups which is a precursor of the polymer having acid-type sulfonic acid groups, is at least 220°C.
机译:为了提供含酸式磺酸基团的聚合物,其具有优异的氢气阻隔性和热水阻力,并且在生产过程中产生较少的低聚物;液体组合物和包含该含酸型磺酸基的聚合物的聚合物电解质膜;和膜电极组件和具有聚合物电解质膜的聚合物电解质燃料电池。该含酸型磺酸基团的聚合物是具有全氟化学单位的聚合物,没有除氟原子以外的卤素原子的单体单元,和酸型磺酸基团,其中氢气渗透系数在80℃的温度和相对湿度为10%的条件下,最多为2.5×10-9cm 3·cm /(s·cm2 ·CmHg),并且在120℃下浸入热水中的质量降低速率为24小时至多15质量%,其中具有氟磺酰基的聚合物的TQ值是具有酸式的聚合物的前体磺酸基团是至少220℃。

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