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.
出处
《合成树脂及塑料》
CAS
北大核心
2005年第3期58-61,共4页
China Synthetic Resin and Plastics
