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以乙烯-乙烯醇共聚物(EVOH)的主链为骨架,利用直接磺化反应制得离子聚合物膜(EVOH-g-SO3H),然后以戊二醛为交联剂对其进行交联改性,得到EVOH-g-SO3H交联基体膜(EVOH-g-GSO3H)。最后采用化学还原工艺得到了以EVOH-g-GSO3H为基体的离子聚合物金属复合材料(IPMC)。讨论了磺化度、失水速率、负载电压等对IPMC电形变性能的影响。结果表明:磺化度ds为15.64%、33.25%、43.53%的IPMC顶点最大形变位移分别为7.53mm、17.02mm、32.11mm。涂有油脂保护层的IPMC失水速率和失水量均比未涂保护层的要小,涂有油脂保护层的IPMC顶点最大形变位移可达29.02mm,IPMC可以连续形变32次。负载电压越高形变量越大,频率越高形变量越小。
An ionic polymer membrane (EVOH-g-SO3H) was prepared by direct sulfonation using the main chain of ethylene-vinyl alcohol copolymer (EVOH) as a backbone and then cross-linked with glutaraldehyde The EVOH-g-SO3H cross-linked base film (EVOH-g-GSO3H) was obtained. Finally, an ionomer metal composite (IPMC) based on EVOH-g-GSO3H was obtained by chemical reduction process. The effects of sulfonation degree, water loss rate and load voltage on the deformability of IPMC were discussed. The results show that the maximum deformation of IPMC with the degree of sulfonation ds of 15.64%, 33.25% and 43.53% is 7.53mm, 17.02mm and 32.11mm, respectively. IPMC coated with grease cover had lower water loss rate and water loss than those without coating, the maximum deformation displacement of IPMC coated with grease cover reached 29.02mm, and IPMC could be continuously deformed 32 times. The higher the load voltage is, the larger the deformation is and the higher the frequency is, the smaller the deformation is.