11.09.2018 - 12.09.2018

Determination of the viscosity function by means of a Capillary Rheometer

The purpose of the workshop is to get the operators familiarized with the handling of the capillary rheometer, both, in practice and theory with the aim to qualify the operators for scientific interpretation of achieved test results, to evaluate the test results with regard to accuracy and to prepare application-oriented test results

Theory

  • Balance equations of material, energy and impulse
  • Definition of stresses
  • Determination of elastic properties of fluids
  • Correction of wall and temperature effects
  • Die swell
  • Presentation of PVT diagrams (isothermal, isobar)
  • Thermal conductivity

Practical Training

  • Measurement of flow- and viscosity function with various capillary rheometer models
  • First normal stress difference
  • Die swell
  • Determination of PVT diagrams
  • Melt elongation
  • Melt index
  • Thermal conductivity
  • Shark Skin
  • Contifeed
  • PVT - measurement
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