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.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第8期101-104,共4页
Petroleum Processing and Petrochemicals
关键词
高温气相色谱
聚α烯烃
组成
1-癸烯
high temperature gas chromatography
polyα-olefins
composition
1-decylene
作者简介
王京，博士，教授级高级工程师，长期从事石油产品分析及原油评价研究工作，Email：wangjing．ripp@sinopec．com。
