ISO-2930 › Raw, natural rubber - Determination of the plasticity retention index (PRI)

ISO-2930 - 6TH EDITION - CURRENT -- See the following: ISO-2930-1
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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.

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Document Number

ISO 2930:2024

Revision Level

6TH EDITION

Status

Current

Publication Date

July 1, 2024

Committee Number

ISO/TC 45/SC 3