HDPE/PC分散相纤维化及其原位复合材料的研究  

Fibrillating and Mechanical Properties of HDPE/PC In-situ Composite

作　　者：罗卫华 周南桥 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心聚合物成型加工工程教育部重点实验室,广东广州510640

出　　处：《塑料工业》2004年第4期16-18,共3页China Plastics Industry

摘　　要：将高密度聚乙烯 (HDPE)和聚碳酸酯 (PC)在双螺杆挤出机中熔融共混挤出 ,通过改变对挤出物施加的牵引速度 ,研究了拉伸力场对HDPE/PC共混物的形态及其原位复合材料性能的影响。结果表明 ,随着牵引速度的提高 ,纤维状分散相所占比例增加 ,但纤维直径无明显变化 ;HDPE/PC原位复合材料与其普通共混材料相比 ,拉伸强度基本无变化 。High density polyethylene (HDPE) and polycarbonate (PC) were melt blended and extruded with a twin screw extruder The effect of extentional field on the morphology of HDPE/PC blends and mechanical properties of HDPE/PC in situ composite was studied by changing draw rate The results showed that the fibrillating of dispersed phase enhanced with the increase of draw rate, but no visible change in diameter of fibers was observed Compared with HDPE/PC normal blend material, the tensile strength of HDPE/PC in situ composite almost remained unchanged, but its notch impact strength had a large improvement

关 键 词：HDPE 高密度聚乙烯 聚碳酸酯 PC 纤维化 双螺杆挤出机 挤出物 拉伸力场 共混材料 拉伸强度 

分 类 号：TQ325[化学工程—合成树脂塑料工业]