Details

Abstract / Summary

According to the properties of hollow square-typed polymer extrudate, the three dimensional numerical simulation of hollow square-typed polymer extrudate based on gas-assisted extrusion technology was performed by using finite element method. Meanwhile, four different gas-assisted modes imposed on the outer and inner wall of hollow square-type extrudate were considered. The extrudate swell ratios and field distributions, such as pressure drop, velocities and normal stresses of four different gas-assisted modes were obtained and compared with each other. Research results show that the extrudate swell ratios and field distributions of different gas-assisted modes are completely different. For the mode of gas-assisted on the single wall, the extrudate swell or shrink phenomena are large due to the non-symmetric properties of field distributions. For the no gas-assisted mode, although the physical field values are large, the extrudate swell ratio is not large due to the interaction role of both walls. For the mode of gas-assisted on both walls, the physical field values, such as pressure drop, normal velocities and stresses are all diminished, and the extrudate swell phenomenon was completely eliminated.

Field of Interest

Global Issues

Copyright Message

Copyright © 2016 Trans Tech Publications Ltd.

Content Type

Periodical article

Duration

0 sec

Format

Text

Page Count

9

Publication Year

2016

Publisher

Trans Tech Publications

Place Published / Released

Switzerland

Subject

Global Issues, Engineering, Social Sciences, Science & Engineering, Materials Science, Engineering, Ciência dos Materiais, Ciencia de Materiales

Keywords and Translated Subjects

Ciência dos Materiais, Ciencia de Materiales