聚α-烯烃合成基础油分子结构与性能关系研究进展
Research Progress on the Relationship Between Molecular Structure and Properties of Poly-α-olefins Synthetic Base Oil
何垒垒 1苏朔 1龙军1
作者信息
- 1. 中石化石油化工科学研究院有限公司,北京 100083
- 折叠
摘要
介绍了聚α-烯烃(PAO)合成基础油的分子结构组成与性能之间的关系,其中包括分子结构与黏度、黏度指数和低温流动性之间的关系.通过分析现有的PAO分子结构参数与其黏度、黏度指数和低温流动性之间的关系,梳理出影响黏度的主要分子结构参数是相对分子质量、支链数量、支链长度和分子的有效长度.分子结构中支链数量、支链长度和支链位置对黏度指数有着重要的影响;支链数量和支链长度对低温流动性能有着重要的影响;支链数量少且较长的PAO分子结构(类似于星型)是兼具好的黏温性能和低温流动性较为理想的结构.因此,从分子水平研究PAO分子结构与性能关系,提炼设计和制备高性能PAO基础油理想结构组分的新思路,为PAO基础油产品升级和新技术的开发提供理论支撑和科学指导.
Abstract
This paper introduces the relationship between the molecular structure and properties of poly-α-olefins(PAO)synthetic base oil,including the relationship between molecular structure and viscosity,viscosity index and low-temperature fluidity.By analyzing the relationship between the existing PAO molecular structure parameters and viscosity,viscosity index,and low-temperature fluidity,the main molecular structure parameters affecting the viscosity are sorted out:relative molecular mass,branch number,branch length,and molecular effective length.The branch number,branch length,and branch position in the molecular structure have an important influence on the viscosity index;the branch number and branch length have an important effect on the low-temperature flow properties;the PAO molecular structure(similar to star type)with few branches and long length is an ideal structure with good viscosity-temperature performance and low-temperature fluidity.Therefore,the relationship between the molecular structure and properties of PAO was studied at the molecular level to extract a new idea for designing and preparing the ideal structural components of high-performance PAO base oil,so as to provide theoretical support and scientific guidance for the upgrading of PAO base oil products and the development of new technologies.
关键词
聚α-烯烃合成基础油/构效关系/结构参数/低温流动性/分子水平Key words
poly-α-olefins synthetic lubricant oil/structure-activity relationship/structural parameter/low-temperature fluidity/molecular level引用本文复制引用
基金项目
中国石油化工股份有限公司合同项目(120055)
出版年
2024
NETL
NSTL
万方数据