以末端基为羟基的聚二甲基硅氧烷(PDMS)与聚四甲基醚二醇(PTMG)为混合软段合成出一系列含硅氧烷的聚氨酯弹性体.用热重分析(TGA)与Ozawa-Flynn的方法研究了聚合物的热稳定性以及热降解动力学,结果表明,PDMS的引入改善了传统聚氨酯弹性体的热稳定性,合成所得聚合物均具有两个不同的热降解阶段,且随着PDMS含量的增加,聚合物的热稳定性逐渐降低.
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