高温气相色谱法测定高黏度聚α烯烃的组成  

DETERMINATION OF COMPOSITIONS OF HIGH VISCOSITY POLY ALPHA OLEFINS BY HIGH TEMPERATURE GAS CHROMATOGRAPHY

作　　者：王京[1] 吴燕珍[1] 孔翠萍[1] 金珂[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2015年第8期101-104,共4页Petroleum Processing and Petrochemicals

摘　　要：采用高温气相色谱法测定了一种高黏度聚α烯烃（PAO）的组成。以PAO150为检测对象,采用ASTM D7169方法,确定样品中存在的PAO种类及聚合度,并用色谱等效温度方法求算出聚合度为2~13的聚1-癸烯类化合物的常压沸点。结果表明：PAO150中存在1-癸烯的2~16聚体;当聚1-癸烯的聚合度达13以上时,PAO的沸点比同碳数正构烷烃沸点低100℃以上;高黏度PAO150的釜式蒸馏过程易导致聚合物中的高沸点重组分热裂解,表现为黏度、黏度指数、相对分子质量等降低,溴指数增加。The compositions of high viscosity PAO150 were determined by high temperature gas chromatography.The types and polymerization degree of PAO were analyzed by ASTM D7169.The atmospheric pressure boiling points of polyα-olefins with the degree of polymerization of 2—13in the sample were calculated using CET（Chromatography Equivalent Temperature）method.The results indicate that there is a 1-decene polymer with polymerization degree of 2—16in the sample and the boiling point of 1-decene polymer is 100 ℃lower than that of paraffin with same carbon number when the polymerization degree is over 13.The high boiling point components in PAO150 are easy to cracking during the kettle-type distillation process,resulting in reduction of viscosity,viscosity index and relative molecular weight,but bromine index.

关 键 词：高温气相色谱 聚α烯烃 组成 1-癸烯 

分 类 号：TE666[石油与天然气工程—油气加工工程] O657.71[理学—分析化学]