【摘要】 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。更多还原

【Abstract】 Two kinds of N-substituted phenyl maleimide containing cyano-group,N-[4-(4-phthalonitrile) phenoxyl]maleimide(1) and N-[4-(3-phthalonitrile) phenoxyl]maleimide(2),were synthesized.Structure of them was confirmed by FT-IR and 1H NMR as well as EA;Thermal behaviors were investigated through TGA and DSC.The peaks in DSC curves,resulted from thermo free radical reaction of maleimide groups for compound 1 and 2,were observed at higher temperatures with comparison with that of the traditional compound bis(4-maleimidophenyl)methane(3).No mass loss in TGA curves was observed up to 300 ℃ in N2 for compounds 1 and 2,and char yields of compounds 1 and 2 at 800 ℃ in N2 were found to be 50% and 57%,respectively,higher than that of 48% at 800 ℃ for compound 3.更多还原