本文件规定了一种基于硬度测量的试验，用于确定结晶引起的橡胶随时间逐渐变硬。它仅限于在10 IRHD至85 IRHD的试验温度下具有初始硬度的材料。 本方法适用于生橡胶、未硫化（复合）橡胶和硫化橡胶。在寒冷气候条件下，如氯丁橡胶和天然橡胶，具有明显结晶倾向的橡胶主要有兴趣。 该方法不适用于快速结晶材料，这些材料在试验温度下调节所用的15分钟时间范围内结晶到相当程度。交叉引用:ISO 18899:2013ISO 48-2:2018ISO 23529ISO 48-5购买时可用的所有当前修订版均包含在本文件的购买中。

This document specifies a test based on hardness measurements for determining the progressive stiffening of rubber with time, caused by crystallization. It is limited to materials having an initial hardness at a test temperature of from 10 IRHD to 85 IRHD. The method is applicable to raw, unvulcanized (compounded) and vulcanized rubber. It is mainly of interest for rubber with a marked crystallization tendency at temperatures experienced in cold climates, such as chloroprene and natural rubber. The method is not applicable to fast-crystallizing materials which crystallize to a considerable degree within the timespan of 15 min used for conditioning at test temperature.Cross References:ISO 18899:2013ISO 48-2:2018ISO 23529ISO 48-5All current amendments available at time of purchase are included with the purchase of this document.