纳米Si_3N_4/PP复合材料的力学性能研究  

Study on Mechanical Properties of Nano-Si_3N_4/PP Composites

作　　者：郝文涛[1] 杨文[1] 刘云翔[1] 胡嘉维[1] 

机构地区：[1]合肥工业大学化工学院,合肥230009

出　　处：《塑料助剂》2008年第1期45-48,共4页Plastics Additives

基　　金：安徽省教育厅青年教师资助项目(编号2006jg1004)

摘　　要：研究了纳米氮化硅(Si3N4)粒子对其填充的聚丙烯(PP)力学性能的影响,结果发现纳米Si3N4/PP复合材料的力学性能表现出了许多与常规纳米粒子改性PP的不同之处。复合材料的拉伸强度随纳米Si3N4粒子含量增加而基本呈直线上升趋势,而冲击强度变化不大,纳米Si3N4粒子对PP并无明显增韧效果;少量(5%)纳米Si3N4粒子便能显著提高复合材料弯曲强度。The influence of nano-sized silicon nitride （Si3N4） particles on the mechanical properties of polypropylene was investigated. It was found that the mechanical properties of nano-Si3N4/PP composites were much different from that of PP modified by ordinarily used nano particles. The tensile strength of the composites went up almost linearly as the content of Si3N4 increased; whereas the impact strength did not changed much, no remarkable toughening effect exhibited; though the content of nano Si3N4 was as low as 5wt%, the flexural strength of the composites was greatly improved.

关 键 词：氮化硅 聚丙烯 力学性能 复合材料 纳米粒子 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]