以对苯二甲酸二甲酯(DMT)、1,4丁二醇(BD)、聚四氢呋喃醚(PTMG)和端羟基聚丁二烯(HTPB)为原料,采用熔融缩聚方法一步合成了一系列端羟基聚丁二烯改性的聚醚酯弹性体(PBT-co-PTMG/HTPB).通过红外、核磁和凝胶色谱等分析方法对其分子结构和分子量进行了表征；测定了聚合物的热性能和物理力学性能.结果发现,随着PBT-co-PTMG/HTPB共聚物中端羟基聚丁二烯含量的增加,数均分子量逐渐增大,最高突破8万；玻璃化转变温度由-25℃降低到-65℃,耐低温性能得到明显改善；共聚物力学性能测试结果表明,当HTPB的质量分数在10％以下时,其强度和断裂伸长率随着HTPB含量的增加而变大,但是质量分数超过10％以后,材料的强度和断裂伸长率随其含量的增加而变小.
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