合成了N-[4-(4-邻苯二甲腈基)苯氧基]马来酰亚胺(1)和N-[4-(3-邻苯二甲腈基)苯氧基]马来酰亚胺(2)两种含氰基的N-取代苯基马来酰亚胺化合物.用FT-IR,1H-NMR和EA对其结构进行了确认.利用DSC和TGA等手段,初步研究了(1)和(2)的热行为.DSC研究结果显示:(1)和(2)发生马来酰亚胺双键的热自由基聚合反应峰比传统化合物二苯甲烷双马来酰亚胺(BMI)高;TGA研究结果表明,在氮气氛下305℃前,(1)和(2)热失重,800℃的残炭率高于BMI,分别达到了50%和57%,证明分子结构中引入腈基可有效降低马来酰亚胺在高温下的热分解引起的热失重,提高材料的耐热性能.
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