Processing induced properties in glassy polymers: application of structural relaxation to yield stress development

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Abstract

A method is presented to predict the yield stress distribution throughout an injection molded product of an amorphous polymer as it results from processing conditions. The method employs the concept of structural relaxation combined with a fictive temperature following the Tool-Narayanaswamy-Moynihan formalism. The thermal history, as it is experienced by the material during processing, is obtained by means of numerical simulation of the injection molding process. The resulting predictions of yield stress distributions show to be in excellent agreement with experimental findings, both for different mold temperatures, as for different part thicknesses.
Original languageEnglish
Pages (from-to)1212-1225
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume44
Issue number8
DOIs
Publication statusPublished - 2006

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Structural relaxation
stress distribution
Yield stress
Stress concentration
Polymers
injection molding
polymers
Processing
Injection molding
histories
injection
formalism
Temperature
temperature
Computer simulation
products
predictions
simulation
Hot Temperature

Cite this

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title = "Processing induced properties in glassy polymers: application of structural relaxation to yield stress development",
abstract = "A method is presented to predict the yield stress distribution throughout an injection molded product of an amorphous polymer as it results from processing conditions. The method employs the concept of structural relaxation combined with a fictive temperature following the Tool-Narayanaswamy-Moynihan formalism. The thermal history, as it is experienced by the material during processing, is obtained by means of numerical simulation of the injection molding process. The resulting predictions of yield stress distributions show to be in excellent agreement with experimental findings, both for different mold temperatures, as for different part thicknesses.",
author = "T.A.P. Engels and L.E. Govaert and G.W.M. Peters and H.E.H. Meijer",
year = "2006",
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journal = "Journal of Polymer Science, Part B: Polymer Physics",
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Processing induced properties in glassy polymers: application of structural relaxation to yield stress development. / Engels, T.A.P.; Govaert, L.E.; Peters, G.W.M.; Meijer, H.E.H.

In: Journal of Polymer Science, Part B: Polymer Physics, Vol. 44, No. 8, 2006, p. 1212-1225.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Processing induced properties in glassy polymers: application of structural relaxation to yield stress development

AU - Engels, T.A.P.

AU - Govaert, L.E.

AU - Peters, G.W.M.

AU - Meijer, H.E.H.

PY - 2006

Y1 - 2006

N2 - A method is presented to predict the yield stress distribution throughout an injection molded product of an amorphous polymer as it results from processing conditions. The method employs the concept of structural relaxation combined with a fictive temperature following the Tool-Narayanaswamy-Moynihan formalism. The thermal history, as it is experienced by the material during processing, is obtained by means of numerical simulation of the injection molding process. The resulting predictions of yield stress distributions show to be in excellent agreement with experimental findings, both for different mold temperatures, as for different part thicknesses.

AB - A method is presented to predict the yield stress distribution throughout an injection molded product of an amorphous polymer as it results from processing conditions. The method employs the concept of structural relaxation combined with a fictive temperature following the Tool-Narayanaswamy-Moynihan formalism. The thermal history, as it is experienced by the material during processing, is obtained by means of numerical simulation of the injection molding process. The resulting predictions of yield stress distributions show to be in excellent agreement with experimental findings, both for different mold temperatures, as for different part thicknesses.

U2 - 10.1002/polb.20773

DO - 10.1002/polb.20773

M3 - Article

VL - 44

SP - 1212

EP - 1225

JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

SN - 0887-6266

IS - 8

ER -