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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.


Общая информация 

  • Текущий статус
     : Опубликовано
    Дата публикации
     : 2022-03
  • Версия
     : 4
  • Технический комитет
     : ISO/TC 61/SC 5 Physical-chemical properties
  • ICS
     :
    83.080.01 Plastics in general

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  3. Каталог стандартов
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  5. ISO/TC 61/SC 5
  6. ISO 3146:2022