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含能材料  2009 

PBAMO的非等温结晶行为研究

Keywords: 高分子材料学,聚3,3-二叠氮甲基氧杂丁环(PBAMO),非等温结晶,差示扫描量热仪(DSC)

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Abstract:

用差示扫描量热仪(DSC)研究了聚3,3-二叠氮甲基氧杂丁环(PBAMO)在匀速降温过程中的结晶行为,结晶峰峰顶温度随降温速率的变化符合一阶指数衰减规律,结晶度在降温速率为2℃·min-1时达到最大,降温速率为5℃·min-1时,结晶速率达到最大。用Ozawa公式研究了非等温结晶行为,得到的Ozawa指数随温度的升高而增大,分为三个区域:(1)温度小于14℃,Ozawa指数小于3;(2)温度介于14~18℃,Ozawa指数介于3~4.12;(3)温度高于18℃,Ozawa指数接近5。根据Kissinger公式计算得到的结晶活化能为59.37kJ·mol-1。

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