Influence of Helical Grooved Structure on Mixing Process in a Single Screw Extruder

Jian Wang

doi:10.4028/www.scientific.net/KEM.561.212

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 561Influence of Helical Grooved Structure on Mixing...

Influence of Helical Grooved Structure on Mixing Process in a Single Screw Extruder

Abstract:

Mixing performance is an important consideration in polymer extrusion processing. Besides a variety of mixing elements used in the extrusion industry, barrel also plays an important role to improve the mixing performance of the extrusion. The influence of helical grooved structure in inner wall of traditional single-extruder barrel on mixing process was investigated by using numerical simulation. POLYFLOW was used to calculate the 3D isothermal flow fields and mixing process of PVC-R in a single screw extruder with and without helical grooved barrel. Mixing performance of PVC-R in these two different structures was studied comparably. It was found that it could improve the mixing performance by helical grooved structure in the barrel, but a suitable groove depth of the helically grooved barrel should be calculated in order to avoid the extrusion throughput.

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Periodical:

Key Engineering Materials (Volume 561)

Pages:

212-217

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.561.212

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Online since:

July 2013

Authors:

Jian Wang

Keywords:

Helical Grooved Barrel, Mixing, Numerical Simulation, Single Screw Extruder

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