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ISO 2930:2017

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

General information

Withdrawn from 19.07.2024
Directives or regulations
None

Standard history

Status
Date
Type
Name
19.07.2024
Main
30.08.2017
Main
Main
ISO 2930:2009
ISO 2930:2017 specifies a method for determining 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.

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