标准编号：ISO 2930:2017
中文名称：天然生橡胶 塑性保持指数（PRI）的测定
英文名称：Rubber, raw natural — Determination of plasticity retention index (PRI)
发布日期：2017-08
标准范围
This document 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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