RO
SR 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)
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.
Status :
Valid
Approval date : 4/29/2022
Number of pages : 20
ICS : 83.080.01 Plastics in general
Technical Committee : 108 - Plastics, codification and analysis methods
- Replaces SR EN ISO 3146:2001
- Replaces SR EN ISO 3146:2001/AC:2003
- Replaces SR EN ISO 3146:2001/AC:2009