采用 DMA,TBA和动态粘弹谱仪等试验手段研究了聚砜增韧环氧 -双氰双胺共混体系的粘弹性 ,实验中用斜削双悬臂梁 ( TDCB)试样测定共混体系断裂韧性 GIC,并阐述两者的相互关系 ,试验结果表明 :环氧 /聚砜体系形成的韧性聚砜连续相以网膜包覆环氧固化球粒的“网膜 -球粒”结构 ,是使体系具有特殊的粘弹性特征的原因 ,并最终获得高韧性和良好的综合性能 The viscoelasticity of toughened epoxy-dicyanodiamide blends was investigated by means of DMA, TBA and dynamic viscoelastic spectroscopy. In the experiment, the samples were analyzed by using the tapered double-cantilever beam (TDCB) Fracture toughness GIC, and the relationship between the two, the experimental results show that: epoxy / polysulfone system of tough polysulfone continuous phase coated with epoxy film enamel-coated “omentum - pellet” structure is The reason why the system has a special viscoelastic character and finally a high toughness and a good overall performance