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Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate and a cone-and-plate oscillatory rheometer

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Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate and a cone-and-plate oscillatory rheometer

PUBLISH DATE 2025

This document specifies the general principles of a method for determining the dynamic rheological properties of polymer melts at angular frequencies typically in the range of 0,01 rad s-1 to 100 rad s-1 by means of an oscillatory rheometer with a parallel-plate or a cone-and-plate geometry.

Angular frequencies outside this range can also be used.

The method is applicable for determining values of the following dynamic rheological properties:

  • complex shear viscosity *,
  • dynamic shear viscosity ',
  • the out-of-phase component of the complex shear viscosity ”,
  • complex shear modulus G*,
  • shear loss modulus G”,
  • shear storage modulus G',
  • phase angle , and
  • loss factor tan.

It is suitable for measuring complex shear viscosity values typically up to ~10 MPa s.

NOTE The shear loss modulus G´´ is sometimes also called viscous shear modulus and the shear storage modulus G´ is sometimes also called elastic shear modulus.

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