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NS-EN ISO 3146:2022

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Abstract

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.

Document information

  • Standard from SN
  • Published:
  • Edition: 2022-03
  • Version: 1
  • Document type: NAT
  • ICS 83.080.01
  • National Committee SN/K 609

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