Scope: This document 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.
NOTE Higher frequency measurements can be made, but significant errors in the dynamic properties
measured are likely to result (see 10.2.2 and 10.2.3).
The method is suitable for measuring dynamic storage moduli in the range 0,01 GPa to 5 GPa. Although
materials with moduli outside this range can be studied, alternative modes of deformation are intended
to be used for higher accuracy [i.e. a shear mode for G´ < 0,01 GPa (see ISO 6721-6) and a flexural mode for E´ > 5 GPa (see ISO 6721-3 or ISO 6721-5)].
This method is particularly suited to the measurement of loss factors and can therefore be conveniently
used to study the variation of dynamic properties with temperature and frequency through most of the
glass-rubber relaxation region (see ISO 6721-1). 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.
Cross References:ISO 6721-1
ISO 6721-6
ISO 6721-5
ISO 6721-3
All current amendments available at time of purchase are included with the purchase of this document. | File Size : | 1
file
, 630 KB |
| ISBN(s) : | 9780580974588 |
| Note : | This product is unavailable in Russia, Ukraine, Belarus |
| Number of Pages : | 16 |
| Product Code(s) : | 30356010, 30356010, 30356010 |
| Published : | 05/08/2019 |
| Same As : | BS ISO 6721-4:2019 |
