首先合成了平均分子量约1000的端氨基聚酰胺预聚体(PA1000)和端异氰酸酯的聚醚型聚氨酯预聚体(OPU).然后将PA1000与OPU进行溶液共聚反应,合成出PA型热塑性弹性体(TPE).采用傅里叶变换红外光谱、广角X射线衍射、差示扫描量热分析、热失重分析、偏光显微镜、拉伸应力应变曲线和溶解实验测试等研究了合成PA型TPE的结构和性能,结果表明:合成PA型TPE表现出良好的热塑性弹性体的力学行为,拉伸强度可高达60 MPa以上,可同时兼具极低的玻璃化转变温度(＜-80℃)和较高的熔融温度(＞170℃),具有类似纯PA材料的耐溶剂性能和较高的热分解温度(＞410℃),是一种性能优异的TPE新材料.
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