An Investigation into the Influencing Factors for Polymer Melt at the Filling Stage in Micro Injection Molding

文献类型： 外文期刊

第一作者： Zhuang, Jian

作者： Zhuang, Jian;Wu, Daming;Zhang, Yajun;Hu, Wei;Wang, Lin;He, Ying;Wang, Xiongwei

作者机构：

关键词： Micro injection molding;Filling stage;Microscale effect;Microscale viscosity;Wall slip

期刊名称：MICRO-NANO TECHNOLOGY XIV, PTS 1-4 （ 影响因子：0.224； ）

ISSN： 1013-9826

年卷期： 2013 年 562-565 卷

页码：

收录情况： SCI

摘要： The flow behaviors for polymer melt at the filling stage in micro injection molding are different from those in conventional injection molding due to the miniaturization of plastic parts. This paper focuses on the study of the effects of three main influencing factors, including the microscale viscosity and wall slip, on melt filling flow in microscale neglected those in conventional injection molding process. The theoretical models and the interrelation of these factors in microscale channels were constructed by means of the model correction method. Then, the micro melt flow behaviors were investigated with comparisons of the available experimental data. The results indicate that the dimensions affect the shear rates and viscous dissipation, which in turn affects the apparent viscosity. Finally, the conclusion is that the melt flow behaviors in microcharmels are different from those in macrochannels owing to these significant influencing factors.

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