ISO 6721-10:2015
2015-09
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2015-09Etapa: Norma Internacional para revisar [90.92]
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Edición: 3Número de páginas: 19
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Comité Técnico :ISO/TC 61/SC 5ICS :83.080.01
- RSS actualizaciones
Próxima versión en desarrollo
ISO/DIS 6721-10
ISO/DIS 6721-10
Plastics — Determination of dynamic mechanical properties
Part 10: Complex shear viscosity using a parallel-plate and a cone-and-plate oscillatory rheometer
Ciclo de vida
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Anteriormente
RetiradaISO 6721-10:1999
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Ahora
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Será reemplazada por
En desarrolloISO/DIS 6721-10