Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate and a cone-and-plate oscillatory rheometer
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.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 6721 |
| Publication Date | Jan. 1, 2025 |
| Language | en - English |
| Page Count | 26 |
| Revision Level | |
| Supercedes | |
| Committee | ISO/TC 61/SC 5 |
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