离子聚合物金属复合材料的电形变性能研究

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dx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。

Electro-deformation Performance of Ionic Polymer-Metal Composite

The ionic polymer film EVOH-g-SO3H was synthesized by sulfonation reaction with using the main chain of poly(ethylene co-vinyl-alcohol)(EVOH) as the skeleton,then it was modified with crosslinking agent glutaraldehyde to get the crosslinked EVOH-g-SO3H(EVOH-g-GSO3H).Finally,the ionic polymer-metal composite(IPMC) was prepared by chemical reduction process with using EVOH-g-GSO3H film as the matrix.Moreover,the effects of sulfonation degree,water loss rate and applied voltage on the electro-deformation performance of IPMC were studied.The results indicated that the maximum vertex deformation displacement of IPMC with sulfonation degree(ds) of 15.64%,33.25% and 43.53% were 7.53mm,17.02mm,32.11mm respectively.The water loss rate and water loss of IPMC with oil cover were less than the one without protection.The maximum vertex displacement and deformation times of the IPMC with oil cover were 29.02mm and 32 times respectively.The maximum vertex displacement was in direct proportion to the applied voltage,but was in inverse proportion to the frequency.