Distortion of interfaces in a multilayer polymer co-extrusion feedblock

B. A. Huntington; E. Chabert; S. Rahal; J. Patz; J. Silva; P. Harris; J. Maia; Roger T. Bonnecaze

doi:10.3139/217.2725

Distortion of interfaces in a multilayer polymer co-extrusion feedblock

B. A. Huntington, E. Chabert, S. Rahal, J. Patz, J. Silva, P. Harris, J. Maia, Roger T. Bonnecaze

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Numerical simulations of co-extruded multilayered viscoelastic polymers flowing through a feed block were performed to analyze the effects of polymer rheology and process conditions on the distortion of interfaces between layers. Finite element simulations assuming Phan-Thien Tanner viscoelastic fluids were used to test the effects of increasing the number of layers introduced to the feed block and decreasing wall friction on interface distortion. It was found that increasing the number of layers introduced to the feed block decreased the overall distortion in the layers by reducing the overall magnitude of second normal stress differences and thus decreasing the normal in-plane velocities that cause distortion, which was validated by experiments. Decreasing wall friction was also found to decrease the amount of distortion in layer interfaces by decreasing the strength of these second normal stress differences.

Original language	English
Pages (from-to)	274-280
Number of pages	7
Journal	International Polymer Processing
Volume	28
Issue number	3
DOIs	https://doi.org/10.3139/217.2725
State	Published - 2013
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
Polymers and Plastics
Industrial and Manufacturing Engineering
Materials Chemistry

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title = "Distortion of interfaces in a multilayer polymer co-extrusion feedblock",

abstract = "Numerical simulations of co-extruded multilayered viscoelastic polymers flowing through a feed block were performed to analyze the effects of polymer rheology and process conditions on the distortion of interfaces between layers. Finite element simulations assuming Phan-Thien Tanner viscoelastic fluids were used to test the effects of increasing the number of layers introduced to the feed block and decreasing wall friction on interface distortion. It was found that increasing the number of layers introduced to the feed block decreased the overall distortion in the layers by reducing the overall magnitude of second normal stress differences and thus decreasing the normal in-plane velocities that cause distortion, which was validated by experiments. Decreasing wall friction was also found to decrease the amount of distortion in layer interfaces by decreasing the strength of these second normal stress differences.",

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T1 - Distortion of interfaces in a multilayer polymer co-extrusion feedblock

AU - Huntington, B. A.

AU - Chabert, E.

AU - Rahal, S.

AU - Patz, J.

AU - Silva, J.

AU - Harris, P.

AU - Maia, J.

AU - Bonnecaze, Roger T.

PY - 2013

Y1 - 2013

N2 - Numerical simulations of co-extruded multilayered viscoelastic polymers flowing through a feed block were performed to analyze the effects of polymer rheology and process conditions on the distortion of interfaces between layers. Finite element simulations assuming Phan-Thien Tanner viscoelastic fluids were used to test the effects of increasing the number of layers introduced to the feed block and decreasing wall friction on interface distortion. It was found that increasing the number of layers introduced to the feed block decreased the overall distortion in the layers by reducing the overall magnitude of second normal stress differences and thus decreasing the normal in-plane velocities that cause distortion, which was validated by experiments. Decreasing wall friction was also found to decrease the amount of distortion in layer interfaces by decreasing the strength of these second normal stress differences.

AB - Numerical simulations of co-extruded multilayered viscoelastic polymers flowing through a feed block were performed to analyze the effects of polymer rheology and process conditions on the distortion of interfaces between layers. Finite element simulations assuming Phan-Thien Tanner viscoelastic fluids were used to test the effects of increasing the number of layers introduced to the feed block and decreasing wall friction on interface distortion. It was found that increasing the number of layers introduced to the feed block decreased the overall distortion in the layers by reducing the overall magnitude of second normal stress differences and thus decreasing the normal in-plane velocities that cause distortion, which was validated by experiments. Decreasing wall friction was also found to decrease the amount of distortion in layer interfaces by decreasing the strength of these second normal stress differences.

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SP - 274

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JO - International Polymer Processing

JF - International Polymer Processing

IS - 3

ER -

Distortion of interfaces in a multilayer polymer co-extrusion feedblock

Abstract

ASJC Scopus subject areas

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