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ISO 3146:2022

Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods ISO 3146:2022

Publication date:   Mar 11, 2022

General information

60.60 Standard published   Mar 11, 2022

ISO

ISO/TC 61/SC 5 Physical-chemical properties

International Standard

83.080.01   Plastics in general

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Scope

This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.
a) Method A: Capillary tube
This method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.
NOTE 1   Method A can also be useful for the evaluation of the softening of non-crystalline solids.
b) Method B: Polarizing microscope
This method is based on changes in the optical properties of the polymer. It is applicable to polymers containing a birefringent crystalline phase. It might not be suitable for plastics compounds containing pigments and/or other additives which can interfere with the birefringence of the polymeric crystalline zone.
NOTE 2   Another method applicable to semi-crystalline polymers is described in ISO 11357‑3.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3146:2000

NOW

PUBLISHED
ISO 3146:2022
60.60 Standard published
Mar 11, 2022