UNE-EN ISO 3146:2022
Current
The latest, up-to-date edition.
Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods (ISO 3146:2022)
Hardcopy , PDF
Spanish, Castilian, English
30-11-2022
This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.
Melting temperatures determined by the different methods usually differ by several kelvins for the reasons explained in the introduction.
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.
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 may not be suitable for plastics compounds containing
pigments and/or other additives which could interfere with the birefringence of the polymeric crystalline zone.
NOTE 2 Another method applicable to semi-crystalline polymers is described in ISO 11357-3, Plastics Differential scanning calorimetry (DSC) Part 3: Determination of temperature and enthalpy of melting and
crystallization.
| Committee |
CTN 53/SC 6
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| EN ISO 3146:2022 | Identical |
| ISO 3146:2022 | Identical |
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