含二氮杂萘酮联苯结构双马来酰亚胺的合成

由含二氮杂萘联苯酮结构的芳香族二元胺4-[4-(4-氨基苯氧基)苯基]-2-(4-氨基苯基)二氮杂萘-1-酮(DHPZ-DA)与顺丁烯二酸酐(MA)反应得到了含二氮杂萘酮联苯结构的双马来酰亚胺预聚物(DHPZ-BMI),并对其进行了FT-IR红外及1H-1H COSY NMR核磁表征。对其溶解性的研究表明,DHPZ-BMI易溶或部分溶解于一些常见低沸点极性溶剂,如氯仿、丙酮。利用示差扫描量热仪(DSC)对DHPZ-BMI热行为进行了研究,结果表明该预聚物的熔点较高,熔融和固化过程的温度范围在低升温速率下有所重叠。为此,加入不同含量的2,2′-二烯丙基双酚A(DABPA)改善其工艺性,并采用DSC对其热性能进行了初步研究,结果表明DABPA的加入,可明显改善树脂的固化行为。

Synthesis of bismaleimide oligomer containing phthalazinone moiety

Bismaleimide containing phthalazinone moiety(DHPZ-BMI) was obtained through the reaction of 4-[4-(4-(aminophenoxyl)phenyl)]-2-(4-aminophenyl)-phthalazin-1(2H)-one(DHPZ-DA)with maleic anhydride(MA)and the product was characterized by FT-IR and 1 H-1H COSY NMR.The BMI was soluble in some polar organic solvents with low boiling points,such as chloroform,acetone.The thermal curing behaviors of DHPZ-BMI were investigated by differential scanning calorimetry(DSC)at different heating rates.The results indicated that DHPZ-BMI had a very high melting point and the temperature range of melting and curing was overlapped at lower heating rates.In order to improve its processability,different amounts of 2,2′-diallylbisphenol A(DABPA) were introduced into DHPZ-BMI.The DSC results showed that the curing performances were obviously improved.