What is ISO 6721-4 about?
ISO 6721-4 is the fourth part of the multi-series standard. BS ISO 6721-4 describes a forced, non-resonance method for determining the components of the tensile complex modulus E* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz.
Who is ISO 6721-4 for?
ISO 6721-4 on the determination of dynamic properties of plastic is useful for:
- Plastic industry
- Chemical engineers
- Product design engineers
Why should you use ISO 6721-4?
ISO 6721-4 is particularly suited for the measurement of loss factors and can be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region, thereby benefitting from the quality-control and product-development perspective.
The measurement of dynamic storage and loss modulus helps manufacturers and testing authorities identify the elastic and viscous behavior of polymers and plastics while also determining its ability to withstand strain under vibratory conditions.
The availability of data determined over wide ranges of both frequency and temperature enables master plots to be derived, using frequency-temperature shift procedures, which display dynamic properties over an extended frequency range at different temperatures.
Overall, ISO 6721-4 can be extremely beneficial for your product development initiatives, while ensuring of its dynamic mechanical properties for durability and efficiency in applications.
What’s changed since the last update?
BS ISO 6721 4:2019 supersedes BS ISO 6721-4:2008, which is withdrawn. BS ISO 6721 4:2019 has only been editorially revised and normative references have been changed to undated.