Standard

NS-EN ISO 3146:2000

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NS-EN ISO 3146:2022

Forhåndsvisning

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Omfang

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.

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 2000-06
  • Versjon: 1
  • Varetype: NAT
  • ICS 83.080.10
  • National Committee SN/K 609

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