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ISO
ISO 6721-10:2025 Plastics - Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate and a cone-and-plate oscillatory rheometer
Edition: 2025
Content Description
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.
About ISO
ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.
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