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制备了一种结构类似于聚氨酯硬段的模型化合物 ,并以该模型化合物与聚氨酯和高氯酸钠盐复合 ,制备了一系列的聚氨酯型聚合物固体电解质 .通过红外光谱和复阻抗谱分析方法对该体系的离子聚集形态、离子 -聚合物相互作用进行了初步的探索 ,并对其离子导电性能进行了研究 .结果表明 ,随着钠离子浓度的增加 ,钠离子优先与醚氧基发生络合 ,当其浓度达到较高水平后 ,转而主要与羰基发生络合 ;体系中盐浓度升高 ,自由离子和离子聚集体数目均有增加 .该体系存在最佳盐程度 ,此时具有最高的离子导电性能 ;但电导率与温度关系不符合 Arrhenius方程 ,硬段模型化合物的加入不利于体系的离子导电性能 .
A model compound similar in structure to polyurethane hard segment was prepared and a series of urethane polymer solid electrolytes were prepared by compounding the model compound with polyurethane and perchlorate sodium salt.Through the methods of infrared spectrum and complex impedance spectroscopy The ionic aggregation morphology and ionic-polymer interaction of the system were explored and the ionic conductivity of the system was also explored.The results showed that with the increase of sodium ion concentration, When the concentration reached a higher level, the conversion to carbonyl mainly occurred. The salt concentration in the system increased, and the number of free ions and ion aggregates increased. The system had the highest salt concentration and the highest concentration at this time However, the relationship between conductivity and temperature does not accord with Arrhenius equation, and the addition of hard-segment model compounds is not conducive to the ionic conductivity of the system.