ISO 7270-2:2024

Rubber — Analysis by pyrolytic gas-chromatographic methods — Part 2: Determination of styrene/butadiene/isoprene ratio

Publication date: 24 maj 2024

General information

Current stage: 60.60 Effective date: 24 maj 2024

Originator: ISO

Owner: ISO/TC 45/SC 2

Type: International Standard

ICS: 83.060

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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Scope

This document specifies a pyrolytic gas-chromatographic method for the determination of the styrene/butadiene/isoprene ratio in copolymers, or blends of homopolymers and/or copolymers, in raw rubbers or in unvulcanized or vulcanized compounds. It is applicable to copolymers/terpolymers consisting of styrene, butadiene and isoprene, and blends of these polymers.
NOTE 1 The use of this document pre-supposes sufficient working knowledge of the principles and techniques of gas chromatography for the analyst to perform the operations described and interpret the results correctly.
NOTE 2 The styrene/butadiene/isoprene ratio determined by this test method is affected by the presence of resin and by a high level of sulfur.

Life cycle

PREVIOUSLY

Revises
ISO 7270-2:2012

NOW

PUBLISHED
ISO 7270-2:2024
60.60 Standard published
24 maj 2024

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