Processing-induced properties in glassy polymers : development of yield stress in polycarbonate

L.E. Govaert, T.A.P. Engels, E.T.J. Klompen, G.W.M. Peters, H.E.H. Meijer

Research output: Contribution to journalArticleAcademicpeer-review

29 Citations (Scopus)
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Abstract

A new method is employed to directly predict the development of yield stressdistributions in injection molded products of glassy polymers. The approach isbased on the results of a study on the temperature dependence of theevolution of yield stress during annealing of polycarbonate below Tg. Incombination with the process-related thermal history, derived from numericalsimulations of the injection molding process, an estimate of the yield stressdistribution throughout a product can be obtained. Computed yield stresses ofinjection molded plates prove to be in excellent agreement with theexperimental values, including their dependence on mold temperature andplate thickness.
Original languageEnglish
Pages (from-to)170-177
JournalInternational Polymer Processing
Volume20
Issue number2
DOIs
Publication statusPublished - 2005

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