GB/T 18118-2000 in English

《GB/T 18118-2000合成生胶中防老剂含量的测定 高效液相色谱法》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本标准规定了合成生胶中下列防老剂含量的测定方法；N-烷基-N′苯基-对苯二胺；N-芳基-N′芳基-对苯二胺；N-芳基-β-萘胺；2，2，4-三甲基-1，2-二氢化喹啉聚合物。本标准适用于氯丁橡胶(CR)、丁腈橡胶(NBR)、丁苯橡胶(SBR)等生胶。当生胶中含有填充油时，会影响测定结果。如果需要，本法稍作修改可用于其它胺类防老剂的测定。

Scope

This standard specifies the determination method for the content of the following antioxidants in synthetic raw rubber: N-alkyl-N'-phenyl-p-phenylenediamine; N-aryl-N'-aryl-p-phenylenediamine; N- Phenyl β-anthylamine; 2,2,4-trimethyl-1,2-dihydroquinoline polymer. This standard applies to chloroprene rubber (CR), nitrile rubber (NBR), styrene-butadiene rubber (SBR) and other raw rubber. When raw rubber contains extender oil, it will affect the measurement results. If necessary, this method can be slightly modified for the determination of other amine antioxidants.