聚苯醚/PA6/弹性体多相共混物的形态结构和冲击性能研究  

Study on Morphological Structure and Impact Behavior of PPO/PA6/Elastomers Multiphase Blends

作　　者：冯威[1] 李齐方[1] 张庆敏 金日光[1] 

机构地区：[1]北京化工大学高分子材料国家重点学科点,北京100029

出　　处：《中国塑料》1999年第9期30-39,共10页China Plastics

基　　金：国家863 计划新材料领域资助!项目(863 - 715 - 007-0060)

摘　　要：以ＳＥＢＳ、ＳＥＢＳｇＭＡＨ、ＰＯＥｇＭＡＨ 作为增韧改性剂，单独或并用对聚苯醚（ＰＰＯ）／ＰＡ６ 共混物进行增韧。ＴＥＭ 的结果显示，在所制备的多相体系中，ＳＥＢＳ 大多被包容在ＰＰＯ 分散相中；而ＳＥＢＳｇＭＡＨ 和ＰＯＥｇＭＡＨ 均分散在ＰＡ６ 的基体中，形成了多种形态结构。冲击断面下方应力发白区的ＴＥＭ 照片上有大量的空穴，表明弹性体的空穴化是诱发剪切带、从而吸收能量的根源。PPO/PA6 blend is toughened by toughness promotors of (styrene-ethylene-butylene-styrene)copolymer (SEBS),maleic anhydride grafted SEBS (MAH-g-SEBS)and maleic anhydride grafted (ethylene-l-octene)copolymer (MAH-g-POE)respectively or combinatively.TEM studies show that in the multiphase systems prepared,various morphologies and structures are formed, SEBS is contained in the disperse of PPO phase,MAH g SEBS and MAH g POE are dispersed in the continuous phase of PA6.A large mumber of cavities are observed in stress-whitened zone under impact fracture surface,which indicats that the cavitation of elastomer is the origin inducing shear bands and aborbing impact energy.

关 键 词：聚苯醚 尼龙6 多相共混物 形态结构 聚酰胺塑料 

分 类 号：TQ334.9[化学工程—橡胶工业] O631.11[理学—高分子化学]