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EVS-EN 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)

Üldinfo
Kehtiv alates 18.04.2022
Alusdokumendid
EN ISO 3146:2022; ISO 3146:2022
Tegevusala (ICS grupid)
83.080.01 Plastid üldiselt
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
18.04.2022
Põhitekst
01.12.2000
Põhitekst
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.
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