以丙氧基新戊二醇(PONPG)与二元酸缩聚反应合成了聚丁二酸丙氧基新戊二醇酯(PNPS)和聚己二酸丙氧基新戊二醇酯(PNPA),再与2,4-甲苯二异氰酸酯(TDI-100)和3,3’-二氯-4,4’-二氨基二苯甲烷(MOCA)制备聚醚酯型聚氨酯(PU)弹性体.用傅里叶变换红外光谱、凝胶渗透色谱和核磁共振对聚醚酯二醇结构及相对分子质量进行了测试,用原子力显微镜表征了PU弹性体的微观结构、DMA表征了聚醚酯二醇种类及相对分子质量对PU弹性体阻尼性能的影响.结果表明,随着聚醚酯二醇相对分子质量增加,PU弹性体的损耗因子最大值(tanδmax)增加,阻尼温域明显地向低温方向移动.PU的AFM谱图的相畴随聚醚酯二醇相对分子质量的增加而增大,三维立体图呈现出高低不平的丛林状形貌.对相同相对分子质量聚醚酯二醇,由PNPA反应制备的PU弹性体,其tanδmax较低,且更偏向于低温区域.
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