短玻纤增强聚丙烯水辅助注射成型纤维取向数值模拟  

Numerical Simulation of Fiber Orientation in Water-Assisted Injection Molding of Short Glass Fiber Reinforced Polypropylene

作　　者：张伟[1] 柳和生[1,2] 黄兴元[1] 余忠[1,3] 章凯[3] 陈忠仕 Wei Zhang;Hesheng Liu;Xingyuan Huang;Zhong Yu;Kai Zhang;Zhongshi Chen(Polymer Processing Research Laboratory,Nanchang University,Nanchang 330031,China;School of Chemical Biology and MateriaSs,East China University of Technology,Nanchang 330013,China;Jiangxi Province Key Laboratory of Polymer Preparation and Processing,Shangrao Normal University,Shangrao 334001,China)

机构地区：[1]南昌大学聚合物成型研究室,江西南昌330031 [2]东华理工大学化学生物与材料学院,江西南昌330013 [3]上饶师范学院江西省塑料制备成型重点实验室,江西上饶334001

出　　处：《高分子材料科学与工程》2019年第8期105-111,117,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21664002,51563010,51403615);江西省教育厅科技项目(GJJ161049);江西省研究生创新专项(YC2017-S058)

摘　　要：基于Folgar-Tucker纤维取向模型,利用Moldex3D对三维长直管件进行溢流法水辅助注射成型可视化研究。结果表明,在制品初始段位置的水道层区域纤维取向倾向于无序状态,而在制品的中间段及末尾段位置的纤维倾向于沿流动方向形成取向;通过适当的增加注水延迟时间可以有效地改善制品初始段位置的纤维沿流动方向的取向。另外,还发现沿流动方向的纤维取向最有序的位置是靠近壳层位置的芯层区域;在制品的末端位置,注水压力、熔体温度显著影响纤维沿流动方向的取向。Based on the Folgar-Tucker fiber orientation model, the visualization of water-assisted injection molding three-dimensional long straight pipe was carried out by using Moldex3D. It is found that the fibers in the water channel layer near water inlet tend to be disordered, whereas at the position near the middle and end of water channel, fibers tend to orienting along flow direction;by appropriately increasing the water injection delay time can result in more fibers at the initial direction of the product orienting along the flow direction. In addition, it has also been found that the glass fibers are orientated remarkably in the core layer and slightly in the region near the mold wall. At the end position of the product, the water injection pressure and melt temperature can significantly affects the orientation of the fibers along the flow direction.

关 键 词：短玻纤增强聚合物复合材料 水辅助注射成型 纤维取向 数值模拟 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]