化工学报2013，Vol.64Issue(8)：3045-3053,9.DOI:10.3969/j.issn.0438-1157.2013.08.049
聚丙烯微阵列结构制品熔体充填行为
Filling behavior of iPP micro-array structure product by micro injection molding
摘要
Abstract
Filling behavior of micro-array structure product of iPP was investigated by numerical analysis and injection molding experiments.An injection mold was designed to produce products with micro-cylinder structure 500 μm in diameter.The filling process of flow front of micro-cylinders of numerical simulation and injection molding experiment was relatively consistent in the general trend.However,formation of flow front and varying patterns of the height of micro-cylinder in the filling process in the numerical simulation deviated from the experiment.Injection molding experiment showed that micro-cylinder mold wall,melt flow rate,and melt flow inertia played an important role in the formation of flow front.Early filling contributed little to the micro-cylinder molding.Turbulence appeared on the melt flow directly below the micro-cylinder.The flow front was like the shape of acentric ellipsoid crown and gradually developed into the shape of spherical crown.关键词
微阵列结构/充填行为/流动前沿/偏心椭球冠状/球冠状Key words
microarray structure/ filling behavior/ flow front/ shape of acentric ellipsoid crown/ shape of spherical crown分类
化学化工引用本文复制引用
张勤星,李倩,董自开,蒋晶,王利霞,申长雨..聚丙烯微阵列结构制品熔体充填行为[J].化工学报,2013,64(8):3045-3053,9.基金项目
国家重点基础研究发展计划项目(2012CB626809).supported by the National Basic Research Program of China (2012CB626809). （2012CB626809）
