ISO/FDIS 7270-2
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Rubber — Analysis by pyrolytic gas-chromatographic methods — Part 2: Determination of styrene/butadiene/isoprene ratio
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31-05-2024
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21-02-2024
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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.
NOTE1 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.
NOTE2 The styrene/butadiene/isoprene ratio determined by this test method is affected by the presence of resin and by a high level of sulfur.
| Committee |
ISO/TC 45/SC 2
|
| DocumentType |
Draft
|
| Pages |
12
|
| PublisherName |
International Organization for Standardization
|
| RevisionOf | |
| Status |
Superseded
|
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