聚醚酰亚胺对共聚双马树脂的增韧作用  

Toughness of polyetherimide on copolymeric bismaleimide resin

作　　者：刘刚[1] 刘奇涛 凌辉[1] 宁荣昌[1] 叶保民 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072 [2]兵工202研究所,陕西咸阳712099 [3]741厂,陕西西安710068

出　　处：《中国胶粘剂》2008年第4期6-9,共4页China Adhesives

摘　　要：采用聚醚酰亚胺(PEI)来提高共聚双马树脂的断裂韧性。实验结果表明,PEI是共聚双马树脂的有效增韧剂;分别加入10份和12.5份的PEI,可使共聚双马树脂的断裂韧性(GIC)分别提高到650J/m2和805J/m2,弯曲模量变化不大,弯曲强度则小幅度下降。用扫描电子显微镜(SEM)和动态力学分析(DMA)研究了改性树脂体系的微观结构,发现其断裂韧性主要与相态结构有关。Polyetherimide（PEI） could used to improve the brittleness of copolymeric bismaleimide resin. The results showed that PEI was an effective toughener of copolymeric bismaleimide resin. When PEI content respectively was 10 phr and 12.5 phr in copolymeric bismaleimide resin, the fracture toughness（Gic） increase to 650 J/m^2 and 805 J/m^2, and flexural strength decrease slight with retention in flexural modulus. The microstructures of the modified resin in system were examined by scanning electron microscope （SEM） and dynamic mechanical analysis （DMA） The toughening improvement was correlated to the morphology of the modified resin.

关 键 词：聚醚酰亚胺 改性树脂 双马来酰亚胺 断裂韧性 相态结构 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]