ISO 3387:2020

Rubber — Determination of crystallization effects by hardness measurements

Датум објављивања: 2. 3. 2020.

Опште информације

Тренутна фаза: 90.92 Effective date: 11. 8. 2025.

Иницијатор: ISO

Припада: ISO/TC 45/SC 2

Врста: Међународни стандард

ICS: 83.060

Језик: енглески француски

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Статус: Објављен

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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.