ISO 6721-6:2019
2019-04
ISO 6721-6:2019
Résumé
This document describes a forced, non-resonance method for determining the components of the shear complex modulus G* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. 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 0,1 MPa to 50 MPa.
NOTE Although materials with moduli greater than 50 MPa can be studied, more accurate measurements of their dynamic shear properties can be made using a torsional mode of deformation (see ISO 6721-2 and ISO 6721-7).
This method is particularly suited to the measurement of loss factors greater than 0,02 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.
Informations générales
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État actuel: PubliéeDate de publication: 2019-04Stade: Norme internationale en cours d'examen systématique [90.20]
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Edition: 2
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Comité technique :ISO/TC 61/SC 5ICS :83.080.01
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Cycle de vie
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Précédemment
AnnuléeISO 6721-6:1996
AnnuléeISO 6721-6:1996/Amd 1:2007
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Actuellement
PubliéeISO 6721-6:2019
Les normes ISO sont réexaminées tous les cinq ans
Stade: 90.20 (En cours d'examen)
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