基于聚己内酯型的聚氨酯弹性体性能研究

Property Study of Poly(ε-caprolactone)-Based Castable Polyurethane Elastomers

通过将聚己内酯与聚四氢呋喃、普通聚酯掺混制备浇注型聚氨酯预聚体,研究了不同混合比例对工艺的影响及弹性体制品的耐高温、耐水解性能。结果表明:PCL与PEA可以以任意比例互溶,按一定比例掺混制备的弹性体具有较好的常温力学性能;PCL与PTMG只能在一定比例范围内互溶;耐高温、耐水解实验结果显示:聚己内酯型预聚体制备的弹性体具有较好的耐高温、耐水解性能。

Polyurethane prepolymer was prepared by poly（ε-caprolactone）,PTMEG and ordinary polyester in this paper.The process impact of different mixing ratio and the property,include high temperature,hydrolysis resistance,of the elastomer were studied.The result shows that： PCL and PEA can be miscible in any proportion,and elastomer with good mechanical properties can be prepared by mixing in a certain proportion;PCL and PTMEG can be mixed in a certain percentage;High temperature and hydrolysis experiments indicates that： poly（ε-caprolactone）-based polyurethane elastomer has excellent high temperature resistance and good hydrolysis resistance.