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用FTIR研究聚氨酯弹性体的固化动力学

Release time:2021-03-15 Hits:

Key Words:傅里叶变换红外光谱;;聚氨酯;;本体聚合;;固化;;动力学

Abstract:使用傅里叶变换红外光谱仪 ,原位跟踪了催化及未催化聚氨酯弹性体(PU)的固化反应动力学行为。结果表明 ,—NCO和—OH的本体聚合在反应初期遵循二级反应和催化动力学规律 ;未催化和催化的PU固化反应的活化能分别为48.0kJ/mol和38.86kJ/mol,频率因子分别为3.01×108 L/(mol·s)和1.14×108L/(mol·s)。

Issue:04

Translation or Not:no

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