ISO 3146:2022 PDF

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.

ISO 3146:2022 Referenced Document

2022 ISO 3146:2022 Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods
2002 ISO 3146:2000/cor 1:2002 Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods; Technical Corrigendum 1
2000 ISO 3146:2000 Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods
1985 ISO 3146:1985 Plastics; Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers
1974 ISO 3146:1974 Plastics — Determination of melting temperature of semi-crystalline polymers — Optical method