Standard

NS-EN ISO 3146:2000

Withdrawn

Note: This standard has a new edition: NS-EN ISO 3146:2022

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Abstract

This International Standard 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 tubeThis method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.Method A may also be useful for the evaluation of the softening of non-crystalline solids.Method B: Polarizing microscopeThis 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.Another method applicable to semi-crystalline polymers is described in ISO 11357-3:1999, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and enthalpy of melting and crystallization.

Document information

  • Standard from SN
  • Published:
  • Withdrawn:
  • Edition: 2000-06
  • Version: 1
  • Document type: NAT
  • ICS 83.080.10
  • National Committee SN/K 609

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