两种HIPS的冲击断裂形貌与冲击曲线分析  

FRACTURED SURFACE MORPHOLOGY AND IMPACT FRACTURE CURVE OF HIPS BLENDS

作　　者：郭曦[1] 杨娟[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：《工程塑料应用》2010年第6期49-53,共5页Engineering Plastics Application

摘　　要：对两种牌号的工业化高抗冲聚苯乙烯树脂YB2710、SK622的冲击断面微观形貌分区进行了观察,并对其内在关系进行了分析。结果表明,YB2710的橡胶相粒径约为1～5μm,其冲击能量主要为裂纹形成能量,增韧机理以银纹化、空穴化为主;SK622的橡胶相粒径约为0.2～2μm,其冲击能量由裂纹形成能量和裂纹扩展能量两部分组成,其增韧机理以银纹化、空穴化为主,同时有轻微的剪切形变。The fracture surface morphology and the dynamic impact fracture curve （F-t curve） of two commercial HIPS products were studied. The results suggested that the rubber-phase particle size of YB2710 was about 1~5 μm and the impact energy was the crack initiation energy mainly, toughening mechanism were crazing and cavitations. And the particle size of SK622 was about 0.2~2 μm, The impact energy was composed of crack initiation energy and propagation energy ,its rubber-toughing mechanism were mainly crazing and cavitations, while the shear yielding also occurred.

关 键 词：高抗冲聚苯乙烯 冲击断裂曲线 冲击断面 微观形态结构 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]