硫化促进剂NOBS含量测定方法的探讨  

Approach of Vulcanizing Accelerator NOBS's Assaying Method

作　　者：李永红[1,2] 陆青乡[1] 陈明鸣[1] 柯长颢[2] 

机构地区：[1]天津大学化工学院,天津300000 [2]兰州石油化工公司丙烯酸厂,甘肃兰州730060

出　　处：《石油化工应用》2006年第6期27-29,共3页Petrochemical Industry Application

摘　　要：硫化促进剂NOBS纯度的测定方法有三种:电位滴定法、指示剂滴定法和液相色谱法。电位滴定法比批示剂滴定法测得结果高0．42％,高效液相色谱法比电位滴定法测得结果高0．39％。通过对硫化促进剂NOBS三种测定方法优缺点的比较,阐明了修订后的GB／T8829纯度测定采用电位滴定法的原因。There are three purity measuring methods of vulcanizing accelerator NOBS ： potentiometric titration, indicator titration and liquid chromatography. The result of potentiometric titration is 0.42% more than indicator titration＇s. The result of HPLC is 0.39% more than potentiometric titration＇s. Through the comparison of the three measuring methods of vulcanizing accelerator NOBS , the reason of adopted potentiometric titration in the revised GB/T8829 is illuminated.

关 键 词：硫化促进剂 NOBS 测定方法 

分 类 号：TQ330.38[化学工程—橡胶工业]