ISO 20998-3:2017
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ISO 20998-3:2017
67601
Indisponible en français

Résumé

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ISO 20998-3:2017 gives guidelines for ultrasonic attenuation spectroscopy methods for determining the size distributions of one or more material phases dispersed in a liquid at high concentrations, where the ultrasonic attenuation spectrum is not a linear function of the particle volume fraction. In this regime, particle-particle interactions are not negligible.

ISO 20998-3:2017 is applicable to colloids, dispersions, slurries, and emulsions. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. Measurements can be made for concentrations of the dispersed phase ranging from about 5 % by volume to over 50 % by volume, depending on the density contrast between the continuous and the dispersed phases, the particle size, and the frequency range[9] [10]. These ultrasonic methods can be used to monitor dynamic changes in the size distribution, including agglomeration or flocculation.


Informations générales 

  •  :  Publiée
     : 2017-04
  •  : 1
  •  : ISO/TC 24/SC 4 Caractérisation des particules
  •  :
    19.120 Analyse dimensionnelle des particules. Tamisage

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std 2 118 Papier
  • CHF118

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