PEG/PPG共聚醚酯的制备及其润滑性能  

PREPARATION AND LUBRICATION PERFORMANCE OF PEG PPG COPOLYETHER ESTER

作　　者：刘智峰[1] 薛卫国[1] 石嘉辉 韩生 晏金灿 Liu Zhifeng;Xue Weiguo;Shi Jiahui;Han Sheng;Yan Jincan(PetroChina Lanzhou Lubricating Oil R&D Institute,Lanzhou 730060;Shanghai Institute of Technology)

机构地区：[1]中国石油兰州润滑油研究开发中心,兰州730060 [2]上海应用技术大学

出　　处：《石油炼制与化工》2024年第11期132-137,共6页Petroleum Processing and Petrochemicals

基　　金：国家自然科学基金资助项目(22075183、22278269、21975161)。

摘　　要：聚醚类基础油一般通过环氧化物的开环聚合反应制备,但由于环氧化物易燃易挥发的特性,对安全生产要求较为严苛。为解决上述问题,以氯化亚锡为催化剂,聚乙二醇、聚丙二醇和琥珀酸共缩聚后脱酸制备共聚醚酯,并通过红外光谱、核磁共振和凝胶渗透色谱对其结构和相对分子质量进行表征。利用运动黏度测试仪、四球摩擦试验机和3D白光干涉仪对共聚醚酯的黏温特性和润滑性能进行考察。结果表明:所制备的聚醚酯在40℃下运动黏度约为170 mm^(2)/s,黏度指数可达220左右;在392 N、30 min、1450 r/min条件下,四球试验钢球磨斑直径为0.55 mm,平均摩擦因数为0.057,说明聚醚酯的减摩效果显著优于商用基础油。At present,polyether base oils are generally prepared by ring opening polymerization of epoxides.However,due to the flammable and volatile nature of epoxides,the requirements for safety production are more stringent.In order to solve the above problems,copolyether esters were prepared by polycondensation and decarboxylation of polyethylene glycol,polypropylene glycol and succinic acid with stannous chloride as catalyst.The structure and molecular weight were characterized by infrared spectroscopy(IR),nuclear magnetic resonance(NMR)and gel permeation chromatography(GPC).The viscosity-temperature characteristics and lubrication performance of copolyether esters were investigated by using a kinematic viscosity tester,a four-ball friction tester and a 3D white light interferometer.The results showed that the viscosity of the prepared polyether ester was about 170 mm^(2)/s at 40℃,the viscosity index was about 220.Under the conditions of 392 N,30 min and 1450 r/min,the wear spot diameter of the test steel ball was 0.55 mm,and the average friction coefficient was 0.057.The antifriction effect was significantly better than commercial base oil.

关 键 词：聚醚 聚醚酯 黏度 润滑性能 

分 类 号：TE626.9[石油与天然气工程—油气加工工程]