标准摘要
[中文适用范围]： 本文件规定了一种热解气相色谱法，用于测定共聚物或均聚物和/或共聚物混合物、生橡胶或未硫化或硫化化合物中的苯乙烯/丁二烯/异戊二烯比率。它适用于由苯乙烯、丁二烯和异戊二烯组成的共聚物/三元共聚物以及这些聚合物的混合物。注 1 使用本文件时，假设分析人员对气相色谱的原理和技术具有足够的工作知识，以便执行所述操作并正确解释结果。注 2 本测试方法测定的苯乙烯/丁二烯/异戊二烯比率受树脂存在和高浓度硫的影响。 [外文原描述]： 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.
英文名称Rubber — Analysis by pyrolytic gas-chromatographic methods — Part 2: Determination of styrene/butadiene/isoprene ratio