红外衰减全反射法测定EPDM中的乙烯含量  

Determination of ethylene units in EPDM by infrared attenuated total reflection method

作　　者：丁文丽 王超 李明 吴爱芹 DING Wenli;WANG Chao;LI Ming;WU Aiqin(Stone Laboratory Co.,Ltd.,Qingdao 266045,China;EVE Rubber Institute Co.Ltd.,Qingdao 266045,China)

机构地区：[1]思通检测技术有限公司,山东青岛266045 [2]怡维怡橡胶研究院有限公司,山东青岛266045

出　　处：《弹性体》2019年第1期61-63,共3页China Elastomerics

摘　　要：采用红外衰减全反射(ATR)法测定三元乙丙橡胶(EPDM)中的乙烯含量,对聚乙烯、聚丙烯及EPDM特征谱带进行归属,绘制特征峰红外吸光度比值与乙烯含量的工作曲线,建立了ATR法测定乙烯含量的计算方法。该方法制样简单,环保快捷,测定样品的最大相对偏差为2.3%,重复性测定的相对标准偏差不大于0.5%。Infrared attenuated total reflection(ATR)method in this article was used to determinate the ethylene content in EPDM rubber.The standard values of ethylene content were confirmed by NMR method to draw the standard curve of infrared absorbance ratio and ethylene content,through which the calculation method was get.The method has the advantages of simple operation and fast measurement.Maximum relative deviation of the samples is 2.3%,and relative standard deviation of repeatability is not greater than 0.5%.

关 键 词：衰减全反射法 三元乙丙橡胶 乙烯含量 

分 类 号：TQ333.4[化学工程—橡胶工业]