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immediate downloadReleased: 2012-10-31
BS ISO 7270-2:2012
Rubber. Analysis by pyrolytic gas-chromatographic methods Determination of styrene/butadiene/isoprene ratio
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| Standard number: | BS ISO 7270-2:2012 |
| Pages: | 20 |
| Released: | 2012-10-31 |
| ISBN: | 978 0 580 65977 5 |
| Status: | Standard |
DESCRIPTION
BS ISO 7270-2:2012
This standard BS ISO 7270-2:2012 Rubber. Analysis by pyrolytic gas-chromatographic methods is classified in these ICS categories:
- 83.060 Rubber
This part of ISO 7270 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 part of ISO 7270 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.