SIBR增韧PS的微观结构  

The microstructure of PS toughened with SIBR rubber

作　　者：杨娟[1] 王健[1] 刘滢[1] 

机构地区：[1]中国石油化工股份有限公司北京燕山分公司研究院,北京102500

出　　处：《合成树脂及塑料》2005年第3期58-61,共4页China Synthetic Resin and Plastics

摘　　要：采用透射电子显微镜和扫描电子显微镜观察了苯乙烯-丁二烯-异戊二烯三元橡胶(SIBR)增韧制备的具有超高冲击强度的高抗冲聚苯乙烯(HIPS)的微观结构,发现SIBR增韧HIPS的形态结构不是传统的海-岛结构,而是一种形状规整的立体网络结构。冲击断面照片显示SIBR增韧主要以剪切屈服为主,从而增强了材料的抗冲击性能。The microstructure of high impact polystyrene having super high impact strength (S-HIPS) was observed by means of transmission electron microscope (TEM) and scanning electron microscope (SEM).An analysis was carried out for comparing S-HIPS and HIPS prepared with polybutadiene rubber (BR).The result shows that the phase structure of S-HIPS possesses the feature of regular stereo network,instead of the conventional“sea-island”morphology.The electronic micrographs reveal that the toughening mechanism of acts mainly in the mode of shear yielding,thereby resulting in an enhanced impact resistance of the material.

关 键 词：SIBR 微观结构 增韧 高抗冲聚苯乙烯 苯乙烯-丁二烯 电子显微镜观察 透射电子显微镜 高冲击强度 抗冲击性能 异戊二烯 形态结构 HIPS 网络结构 冲击断面 橡胶 

分 类 号：TQ330.1[化学工程—橡胶工业]