Norme internationale
ISO 6721-6:2019
Plastiques — Détermination des propriétés mécaniques dynamiques — Partie 6: Vibration en cisaillement — Méthode hors résonance
Numéro de référence
ISO 6721-6:2019
Edition 2
Norme internationale
ISO 6721-6:2019
Indisponible en français
Publiée (Edition 2, 2019)

ISO 6721-6:2019

ISO 6721-6:2019
CHF 63
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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

  •  : Publiée
     : 2019-04
    : Norme internationale en cours d'examen systématique [90.20]
  •  : 2
  • ISO/TC 61/SC 5
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