苯并噁嗪/蒙脱土插层体系和苯并噁嗪体系的动态固化行为比较

Comparison of Dynamic Curing Behavior of Polybenzoxazine and Polybenzoxazine/Montmorillonite Hybrid

比较了苯并嗪单体 ( BZ)和插层于蒙脱土层间的苯并嗪单体 ( BZ/MMT)两种体系的动态固化特性 .实验发现 ,经有机化处理的蒙脱土在 BZ/MMT体系的固化行为中起着重要的作用 ,使该体系存在催化聚合和热聚合两类固化单元反应 .结果造成两种体系在特征固化温度、固化速率、反应热、反应级数以及表观活化能上存在明显的差别 .

The dynamic curing behavior of two curing systems which include pristine polybenzoxazine monomer(BZ) system and polybenzoxazine monomer insertion montmorillonite(BZ/MMT) system was compared. It was found that the organically treated played a vital role in curing behavior of BZ/MMT system and two types of curing reactions occurred in BZ/MMT system which includes: catalyzed polymerization and thermal polymerization, as a result, big difference in the two systems occurred at the characteristic curing temperature, curing rate, the heat of reaction, reaction order, as well as apparent activation energy.