PA66异形微纤对PP基复合材料拉伸性能影响的数值模拟  

Numerical Simulation for the Influence of PA66 Shaped Micro Fiber on Tensile Properties of PP Matrix Composites

作　　者：程龄贺[1] 于翔[2] 刘航[1] 

机构地区：[1]华北水利水电大学土木与交通学院,河南郑州450045 [2]河南工程学院材料与化学工程学院,河南郑州450000

出　　处：《塑料科技》2016年第9期21-25,共5页Plastics Science and Technology

摘　　要：研究了"后期增容"技术制备的PP/a-PA66原位成纤复合材料在拉伸载荷下的力学特性,并建立了有限元模型,对其拉伸行为进行了数值模拟。与不添加增容剂的PP/PA66、直接将PP、PA66、SCRC熔融共混-热拉伸制备的PP/PA66/SCRC相比,PP/a-PA66的拉伸屈服应力最优,且与纯PP最为接近,这是因为其具有PA66异形微纤、强结合适度柔性界面的结构特征。拉伸力学行为的数值模拟曲线与试验曲线相似度较高,表明考虑材料属性的有限元模型可以较好地模拟原位成纤复合材料的拉伸力学特性。The mechanical properties of PPla-PA66 in situ composites prepared by post-compatibilization technology were studied, and the finite element model was established to simulate the tensile behavior of composites. Compared with PP/PA66 and PP/PA661SCRC prepared with PA66, SCRC and PP through melt blending-hot drawing method, and the tensile yield stress of PPI a-PA66 was the most close to that of pure PP. This is because it has a strong combination of the structural characteristics of a moderate flexible interface of PA66 shaped micro fiber. The similarity between the numerical simulation curve and the test curve is higher, which shows that the finite element model of the material properties can be used to simulate the tensile mechanical properties of in situ composites.

关 键 词：聚丙烯 尼龙66 异形微纤 拉伸性能 有限元法 

分 类 号：TB332[一般工业技术—材料科学与工程]