用热分析法研究羧甲基纤维素钠(CMC)对环氧树脂E44/-氨基二苯基甲烷(DDM)体系固化行为和性能的影响.差示扫描量热法(DSC)非等温固化反应动力学研究表明,CMC的加入对固化反应有促进作用.Starink方程计算了E44/DDM体系活化能为51.14 kJ/mol,CMC加入后活化能为40.52 kJ/mol～51.01 kJ/mol.用n级非等温动力学分析,获得了固化反应的动力学参数.热重分析(TGA)表明,CMC的加入有利于提高环氧树脂固化物的热稳定性.动态力学性能(DMTA)分析表明,CMC和环氧树脂体系相容性很好,且CMC的加入增大了环氧树脂固化物的储能模量,而对玻璃化转变温度影响较小.
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