Résumé
ISO 6721-10:2015 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 geometry. Angular frequencies outside this range can also be used (see Note 1). The method is used to determine values of the following dynamic rheological properties: complex shear viscosity η*, dynamic shear viscosity η', the out-of-phase component of the complex shear viscosity η", complex shear modulus G*, shear loss modulus G", and shear storage modulus G'. It is suitable for measuring complex shear viscosity values typically up to ~10 MPa·s (see Note 2).
NOTE 1 The angular-frequency measurement range is limited by the specification of the measuring instrument and also by the response of the specimen. When testing using angular frequencies lower than 0,1 rad·s?1, the test time can increase significantly as the time taken to obtain a single measurement is proportional to the reciprocal of the angular frequency. Consequently, when testing at low angular frequencies, degradation or polymerization of the specimen is more likely to occur and have an effect on the results. At high angular frequencies, the specimen can distort or fracture at the edge, consequently invalidating the test results.
NOTE 2 The range of complex shear viscosity values that can be measured is dependent on the specimen dimensions and also the specification of the measuring instrument. For a specimen of given dimensions, the upper limit of the range is limited by the machine's torque capacity, angular-displacement resolution, and compliance. However, correction can be made for compliance effects.
Informations générales
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État actuel: PubliéeDate de publication: 2015-09Stade: Norme internationale à réviser [90.92]
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Edition: 3
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Comité technique :ISO/TC 61/SC 5ICS :83.080.01
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Prochaine édition en cours d'élaboration
ISO/DIS 6721-10
Plastiques — Détermination des propriétés mécaniques dynamiques
Partie 10: Viscosité complexe en cisaillement à l'aide d'un rhéomètre à oscillations à plateaux parallèles ou à géométrie cône/plan
ISO/DIS 6721-10
Cycle de vie
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Précédemment
AnnuléeISO 6721-10:1999
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Actuellement
PubliéeISO 6721-10:2015
Les normes ISO sont réexaminées tous les cinq ans
Stade: 90.92 (Sera révisée) -
Sera remplacée par
ProjetISO/DIS 6721-10