Polymer Engineering and Science · 2000 · 10 citations · 8 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsPolymer EngineeringRheologyInjection MoldingLiquid CrystalsMelt RheologyPolymer CharacterizationPolymer MorphologyPolymer RheologyFlow Behavior AnalysisLiquid Crystal PolymersLiquid Crystalline PolymersMelt Flow BehaviorPolymer Melt FlowPolymer Melt RheologyPolymer Melt ViscosityRheometer Measurements
Abstract The flow behavior of two commercial liquid crystalline polymers (LCP), Vectra B 950 and Vectra L 950 (Ticona GmbH), was investigated using a capillary rheometer with a new double slit die. The influence of pre‐shearing of the melt on its viscosity and the apparent geometry dependence of its flow behavior were analyzed. The dependence of flowability on the part was determined with a modular spiral mold in which the thickness of the channel was varied. The influence of processing parameters and part geometry on the mechanical properties and morphology of molded parts was also studied.
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