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Normas DIN – AENOR
DIN EN ISO 1628-5:2014-10

DIN EN ISO 1628-5:2014-10

Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 5: Thermoplastic polyester (TP) homopolymers and copolymers (ISO 1628-5:1998); German version FprEN ISO 1628-5:2014 / Note: Date of issue 2014-09-12

Plastiques - Détermination de la viscosité des polymères en solution diluée à l'aide de viscosimètres à capillaires - Partie 5: Homopolymères et copolymères des polyesters thermoplastiques (TP) (ISO 1628-5:1998); Version allemande FprEN ISO 1628-5:2014 / Attention: Date de parution 2014-09-12

Kunststoffe - Bestimmung der Viskosität von Polymeren in verdünnter Lösung durch ein Kapillarviscosimeter - Teil 5: Thermoplastische Polyester(TP) Homopolymere und Copolymere (ISO 1628-5:1998); Deutsche Fassung FprEN ISO 1628-5:2014 / Achtung: Erscheinungsdatum 2014-09-12

Fecha Anulación:
2015-05 /Withdrawn
Equivalencias internacionales:

FprEN ISO 1628-5 (2014-08)

ISO 1628-5 (1998-03)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 1628-5:2015-05

Resumen:
This part of ISO 1628 specifies a method for the determination of the viscosity number (also referred to as "reduced viscosity") of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents. The method is applicable to poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly-(cyclohexylenedimethylene terephthalate), (PCT), and poly(ethylene naphthalate) (PEN), as well as to copolyesters and other polyesters, defined in ISO 7792-1, that are soluble in one of the specified solvents under the specific conditions. The viscosity number is determined by the general procedure specified in ISO 1628-1, observing the particular conditions specified in this part of ISO 1628. The determination of the viscosity number of a thermoplastic polyester provides a measure of the relative molecular mass of the polymer.
Keywords:
Copolymers, Determination, Homopolymers, Limits (mathematics), Measurement, Measuring techniques, Mouldings (shaped section), Phthalates, Plastics, Polyethylene terephthalate, Polymers, Solutions, Solvents, Testing, Viscometers, Viscosity, Viscosity measurement, Viscosity numbers
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