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HomeKey Engineering MaterialsKey Engineering Materials Vols. 562-565An Investigation into the Influencing Factors for...

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

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Abstract:

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 microchannels are different from those in macrochannels owing to these significant influencing factors.

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Periodical:

Key Engineering Materials (Volumes 562-565)

Pages:

1380-1386

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.562-565.1380

Citation:

Cite this paper

Online since:

July 2013

Authors:

Jian Zhuang, Da Ming Wu, Ya Jun Zhang, Lin Wang, Xiong Wei Wang, Ying He, Wei Hu

Keywords:

Filling Stage, Micro Injection Molding, Microscale Effect, Microscale Viscosity, Wall Slip

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