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SR ISO 2930:2024

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

<p class="MsoBodyText"><span lang="EN-GB">This document specifies a method to determine the plasticity retention index (PRI) of raw natural rubber.</span></p> <p class="MsoBodyText"><span lang="EN-GB">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.</span></p>

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Status : Valid
Approval date : 8/20/2024
Number of pages : 4
ICS : 83.040.10 Latex and raw rubber
Technical Committee : 108 - Plastics, codification and analysis methods

Relations with other standards: