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TitlePolymer flow dynamics in microimpressions : an experimental approach
Author(s)Zhiltsova, T. V.
Oliveira, M. S. A.
Ferreira, J. A.
Vasco, Joel Oliveira Correia
Pouzada, A. S.
Pontes, A. J.
KeywordsMicroinjection moulding
Polymer dynamics
Issue dateFeb-2013
JournalPolymer Testing
Abstract(s)The melt flow dynamics of acrylonitrile-butadiene-styrene (ABS) and polypropylene (PP) in a variable thickness microimpression was assessed by monitoring cavity temperature and pressure as relevant process parameters. A micromoulding block with a variable thickness cavity was designed, manufactured and instrumented with pressure and temperature sensors, acting as monitoring devices as well as flow position markers during filling. A full factorial design of experiment (DOE) was carried to optimize the filling of the microimpression. This study with ABS and PP suggests that mould temperature is the more important parameter for the entire micromoulding thickness range under analysis. Nevertheless, the influence of the melt temperature and the injection speed were found to depend on the micromoulding thickness and the polymer type.
DescriptionAccepted manuscript
AccessRestricted access (UMinho)
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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