文献类型：期刊文献

英文题名：Study of the structure-activity relationship of metallocene-catalysed poly-α-olefin (mPAO) base oil

作者：Xue, Jia Y.[1];Dong, Su Q.[2];Mi, Pu K.[3];Wang, Li B.[4];Wang, Si H.[4];Zhang, Zhang[5];Zhang, Zhi G.[5];Hu, Jia S.[6]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Sinopec Shanghai Petrochem Co Ltd, Carbon Fiber Plant, Shanghai 200540, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Sch Mat Sci & Engn,Minist Educ, Shanghai 200237, Peoples R China;[4]China Natl Petr Corp, Daqing Chem Res Ctr, Daqing 163000, Peoples R China;[5]Guangdong Chengming Chem S&T Co Ltd, Dongguan 523808, Peoples R China;[6]Hangzhou Puyu Technol Dev Co Ltd, Hangzhou 311300, Peoples R China

年份：2021

卷号：6

期号：9

起止页码：722

外文期刊名：MOLECULAR SYSTEMS DESIGN & ENGINEERING

收录：;EI(收录号：20213710885573);WOS:【SCI-EXPANDED(收录号:WOS:000670220400001)】；

基金：We are grateful to the National Key R&D Program of China (2017YFB0306701) and the Project of Shanghai Key Discipline and Key Laboratory, China (No. B502, 08DZ2230500).

语种：英文

外文关键词：Catalysis - Catalysts - Viscosity - Molecular structure - Organometallics

摘要：In this paper, alpha-olefins with different chain lengths are used as monomers, and metallocene catalysts were used to prepare low-viscosity metallocene-catalysed poly-alpha-olefin (mPAO) lubricating base oils. Structure and performance tests were carried out. Three molecular structure parameters were selected: relative molecular weight (M-n), branch carbon number (L), and number of branches (n). By mixing and compounding each component oligomer and performing data analysis, the relationships between the molecular structure of mPAO and the key physical properties of the base oil, such as viscosity, viscosity index and pour point (PP), were studied. The results show that in a certain range of M-n, when L (or n) is constant, with an increase in M-n, the viscosity (Kv) and M-n show a power function growth trend, and the growth rate of Kv(40 degrees C) is greater than that of Kv(100 degrees C). The viscosity index (VI) increases with increasing M-n, a greater n results in a more obvious growth trend, and a greater L results in a weaker growth trend. When L is constant, an increase in n results in an initial decrease followed by an increase in PP, and PP is the lowest at n = 2.