中文摘要：

质子交换膜燃料电池（PEMFC）作为一种发电装置，具有转换效率高、低温启动和环境友好等优点，被广泛应用于航天、军事、能源和交通等领域．在这种发电装置中，质子交换膜起着非常关键的作用．到目前为止，PEMFC中大量使用的是美国杜邦公司的全氟磺酸膜（Nafion膜）．Nafion膜具有很好的性能，但价格昂贵，在低湿度和高温条件下质子的传导率低，甲醇透过率高，因而新的质子交换膜的开发已成为人们关注的热点．

英文摘要：

A series of sulfonated polyimides were synthesized by condensation of bis（p-hydroxylphenyl）-1,4, 5,8-naphthalenetetracarboxylic di-imide （ NTDA ） with various molar ratios of 3,3＇-disulfonate-4,4＇-dichlorodi- phenylsulfone to 4,4＇-dichlorodiphenyl-sulfone. Both the monomers and the polymers were characterized by FTIR and ^1 H NMR. All the synthesized polymers have intrinsic viscosities above 0.70, which implies that the polymers have a high molecular weight. The DSC and TGA analysis of the polymers show that all of the polymers have good thermal stabilities. The polymers also have a good solubility, and could be cast into tough membranes. Some properties of the polymer membranes were also studied.