BS ISO 7270-2:2012
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Rubber. Analysis by pyrolytic gas-chromatographic methods Determination of styrene/butadiene/isoprene ratio
Hardcopy , PDF
English
31-10-2012
29-05-2024
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Procedure
7 Expression of results
8 Precision
9 Test report
Annex A (informative) - Precision
Bibliography
Describes 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.
| Committee |
PRI/22
|
| DevelopmentNote |
Supersedes 03/307995 DC. (04/2005)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This part of ISO7270 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 part of ISO7270 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.
| Standards | Relationship |
| ISO 7270-2:2012 | Identical |
| ISO 1407:2011 | Rubber — Determination of solvent extract |
| ISO/TR 9272:2005 | Rubber and rubber products — Determination of precision for test method standards |
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