HSD类黏指剂热管氧化沉积物形成与表征  

Formation and Characterization of Heat Pipe Oxidation Deposits Formed by HSD Type Viscosity Index Improvers

作　　者：鄂红军[1] 阿合波塔·巴合提 吴思 金佳佳[1] E hongjun;Ahebota·baheti;Wu si;Jin jiajia(Beijing Research Institute of Sinopec Lubricant Co.,Ltd.Beijing 100085,China)

机构地区：[1]中国石化润滑油有限公司北京研究院,北京100085

出　　处：《石油商技》2024年第S01期56-60,共5页Petroleum Products Application Research

摘　　要：采用热管氧化试验法分别对单一基础油和1wt.%HSD类黏度指数改进剂[ω(氢化苯乙烯双烯共聚物):ω(基础油)=1∶99]在220℃、250℃、280℃、310℃温度下开展试验,并利用SEM、EDS、FT IR、1H-NMR对管壁沉积物进行表征。研究表明:在220℃、250℃试验温度下,单一基础油形成管壁沉积物含量高,在280℃、310℃试验温度下,1wt.%HSD黏度指数改进剂形成管壁沉积物含量明显高于单一基础油。与220℃、280℃试验温度下的管壁沉积物相比,1wt.%HSD黏度指数改进剂在280℃、310℃下的管壁沉积物平均粒径90~100μm,沉积物的O、S含量相近,C元素含量略有增加。另外,管壁沉积物化学位移0.85×10^(-6)峰面积明显增大,但化学位移1.26×10^(-6)、1.56×10^(-6)峰面积明显变小。由此说明,1wt.%HSD类黏度指数改进剂中烷烃链长变短,但异构化程度显著增加。这可能是因为HSD类黏度指数改进剂在280℃、310℃温度下发生深度氧化引起的。Heat pipe oxidation tests were conducted on pure base oil and 1wt.%HSD viscosity index improver(1wt.%hydrogenated styrene diene copolymer with 99wt.%base oil)at 220℃,250℃,280℃,and 310℃,and SEM,EDS,FT IR,and 1H-NMR were used to characterize the sediment on the pipe wall.Research has shown that a single base oil forms a high content of sediment on the pipe wall at 220℃and 250℃.At 280℃and 310℃,The content of sediment on the pipe wall formed by 1wt.%HSD viscosity index improvers has significantly increased,with an average particle size of 90~100μm.The O and S contents of sediment are similar,while the C element content slightly increases.The peak area of sediment chemical shift 0.85×10^(-6)increased significantly,while the peak areas of chemical shift 1.26 and 1.56×10^(-6)decreased significantly.This indicates that the alkyl chain length of 1wt.%HSD viscosity index improvers becomes shorter,but the degree of isomerization is significant.This may be because the 1wt.%HSD viscosity index improver only undergoes deep oxidation at 280℃and 310℃.

关 键 词：黏度指数改进剂 HSD类 热管氧化试验 表征 

分 类 号：TE624.82[石油与天然气工程—油气加工工程]