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Full Description

This document specifies a method to determine the plasticity retention index (PRI) of raw natural rubber.

The PRI is a measure of the resistance of raw natural rubber to thermal oxidation. A high resistance to thermal oxidation is shown as a high value of the index. PRI is not an absolute value and cannot give an absolute classification of plasticity number of different natural rubber after oxidation.
 

Document History

  1. ISO 2930:2024

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    Raw, natural rubber - Determination of the plasticity retention index (PRI)

    • Most Recent
  2. ISO 2930:2017


    Rubber, raw natural - Determination of plasticity retention index (PRI)

    • Historical Version
  3. ISO 2930:2009


    Rubber, raw natural - Determination of plasticity retention index (PRI)

    • Historical Version
  4. ISO 2930:1995


    Rubber, raw natural - Determination of plasticity retention index (PRI)

    • Historical Version