几种加氢润滑油基础油性质和组成的研究

通过对9种加氢润滑油基础油的主要性质及组成进行分析，并采用n-d-M法计算其结构族组成参数，依据其性质与组成的关系，对加氢润滑油基础油的密度、折射率、平均相对分子质量与结构组成以及烃类组成进行关联，同时对加氢润滑油基础油中的链烷烃、环烷烃含量与黏度指数、氧化安定性进行关联。结果表明：9种加氢润滑油基础油的密度与总环数和芳环数具有正相关性；折射率与结构组成参数（芳碳率、烷基碳率）具有近似的正相关性，而与烷基碳率具有负相关性；平均相对分子质量与芳烃、环烷烃含量呈正相关性，而与链烷烃含量则呈负相关性；链烷烃含量与氧化安定性、黏度指数也具有正相关性，但环烷烃含量与氧化安定性、黏度指数则呈现负相关性。

CORRELATION OF PROPERTIES AND COMPOSITIONS OF HYDROTREATED LUBE BASE OIL

The properties and hydrocarbon compositions of 9 kinds of hydrotreated lube base oils were analyzed and their structure parameters were calculated by n-d-m method. The relationships between the structure and the hydrocarbon composition of hydrotreated base oil with density, refractive index, average molecular weight were explored. At the same time, the correlation of the alkane, cyclanes content in lube base oil with viscosity index and oxidation stability was tested. The results show that the density of the base oil has a positive correlation with the RT and RA; the refractive index has an approximate positive correlation with the structure parameters (CA, CN) and a negative correlation with CP; the average molecular weight has a positive correlation with aromatic and alkane content, and a negative correlation with the paraffinicity. The paraffin content has a positive correlation with the oxidation stability and viscosity index, but has a negative correlation with the naphthene content.