含杂萘联苯结构聚芳醚/DABPA/BDM共混体系研究

Study on the Bismaleimide Resin Blends System of Poly( aryl ether) s/DABPA/BDM Containing Phthalazinone Structure

介绍了含二氮杂萘酮联苯结构聚芳醚系列树脂和烯丙基双酚A(DABPA)、对二苯甲烷型双马来酰亚胺(BDM)树脂共混增韧改性研究进展。以耐高温可溶性含二氮杂萘酮联苯结构聚芳醚酮(PPEK)、聚芳醚砜(PPES)或聚芳醚腈酮(PPENK)为增韧改性剂,既可以提高BMI共混物的韧性,又赋予其优异的耐热性能,相比而言,含砜基的PPES的增韧效果最好。分别对聚芳醚进行氨基和马来酰亚胺基封端改性,并将其用于BDM的共混改性,结果表明氨基和马来酰亚胺端基均参与BDM树脂的固化反应,增强了聚芳醚树脂与BDM树脂的界面粘结作用,进而提高了增韧效果。其中,加入马来酰亚胺封端PPES的增韧效果最好,缺口冲击强度比纯BDM树脂提高近1倍,达到4.26 k J/m2,样品断面形貌结构分析表明共混物发生了明显塑性变形,在断裂过程中吸收了大量的冲击能,从而使韧性提高。

This paper introduces the progress on the studies of BMI blends modified by poly （ aryl ether） s containing phthalazinone moieties and o, o＇ -diallyl bisphenol A （DABPA）. The toughness and thermal properties of BMI blends can be both improved by introducing heat-resistant poly（phthalazinone ether ketone） （PPEK）, poly（ phthalazinone ether sulfone） （PPES） or poly（ phthalazinone ether nitrile ketone） （PPENK） resins. Comparatively, PPES has the relatively better toughening effect than the other two resins due to the existence of stronger aprotie sulfone groups in the main chains. Moreover, PPEK and PPES end-capped by amino and maleimide groups were also blended with BDM and DABPA as mod- ifiers. The results show that both amino and maleimide groups took part in the curing reaction of BDM, which enhanced the interface bonding effect between thermal plastics and BDM resin. Especially, PPES end-capped by maleimide groups has the best toughening effect among these poly（ aryl ether）s. All of these blends experience plastic deformation during the impact test, and poly（ aryl ether） s can absorb a large amount of impact energy, thus enhance the toughness of BDM blends.