PPO/SEBS-g-MAH共混体系的“瞬间原位大取向”增韧模型  

“INSTANTANEOUS IN SITU HIGH ORIENTATION” TOUGHENED MODEL OF PPO/SEBS-G-MAH BLENDS

作　　者：冯威[1] 毛立新[1] 武德珍[1] 李齐方[1] 励杭泉[1] 金日光[1] 

机构地区：[1]北京化工大学

出　　处：《材料研究学报》2000年第2期127-132,共6页Chinese Journal of Materials Research

基　　金：国家八六三计划新材料领域资助课题;863-715-007-0060

摘　　要：针对具有网状结构的 ＰＰＯ／ＳＥＢＳ－ｇ－ＭＡＨ共混合金冲击断面的形貌和微观形变过程，提出了“瞬间原位大取向”增韧模型该模型认为，超韧 ＰＰＯ／ＳＥＢＳ－ｇ－ＭＡＨ的冲击断裂首先是弹性体周围产生微穴，微穴诱发基体产生剪切带，基体在剪切屈服过程中被网状的弹性体携带共同发生大的取向行为，形成取向分子束，从而吸收大量能量，达到超韧水平．For PPO/SEBS-g-MAH (Kraton FG 1901) blends with network morphology, “In- stantaneous in siam high orientation”, toughened model was proposed based on the fracture surfaces and microstructural deformation process. According to this model, the impact fracture of PPO/SEBS- g-MAH blends was initiated from the micro-cavities inside the elastomer and matrix, shear bands were subsequently induced by the micro-cavities resulting in a high orientation of the network structure, during which orientation molecular bunches were formed and a great amount of energy was consumed.

关 键 词：PPO/SEBS-g-MAH 增韧模型 高分子合金 

分 类 号：TG139.8[一般工业技术—材料科学与工程]