石油炼制与化工 ›› 2022, Vol. 53 ›› Issue (12): 70-76.

• 油品与添加剂 • 上一篇    下一篇

基础油对发动机油TEOST 33C沉积物的影响

钟锦声,王宁   

  1. 中石化石油化工科学研究院有限公司
  • 收稿日期:2022-04-06 修回日期:2022-08-13 出版日期:2022-12-12 发布日期:2022-12-06
  • 通讯作者: 钟锦声 E-mail:zhongjs.ripp@sinopec.com
  • 基金资助:
    中国石油化工股份有限公司合同项目

EFFECT OF LUBE BASE OIL ON ENGINE OIL TEOST 33C DEPOSITS

  • Received:2022-04-06 Revised:2022-08-13 Online:2022-12-12 Published:2022-12-06

摘要: 研究了发动机油高温氧化沉积物测定试验(TEOST 33C)中沉积物的主要来源、化学组成以及润滑油基础油(简称基础油)对TEOST 33C沉积物形成的影响。结果表明:TEOST 33C沉积物主要由添加剂形成,主要由含氧烃类化合物组成,并含有少量氮化物、硫酸钙、磷酸盐、二硫化钼、二氧化钼和钼酸盐;基础油组分对形成TEOST 33C沉积物的量和组成有较大影响;由 HVI Ⅰ150基础油配制油样的TEOST 33C沉积物量小于由 HVI Ⅱ4、HVI Ⅱ+4,HVI Ⅲ 4 基础油配制的油样;随着基础油黏度增加,TEOST 33C沉积物形成量减少,使用 HVI Ⅱ10 基础油可大幅降低 TEOST 33C 沉积物量;基础油的极性增强有利于降低 TEOST 33C 沉积物量。

关键词: 高温氧化, 基础油, 沉积物, X光电子能谱

Abstract: The main sources and chemical composition of TEOST 33C deposits, and the base oil properties influence on the TEOST 33C deposits were studied. The results show that TEOST 33C deposits formed mainly from the additives, mainly composed of oxygenated hydrocarbon compounds, also contain a small part of nitrides, calcium sulfate, phosphate, MoS2, MoO2 and molybdate.Base oil has a great influence on the amount and composition of TEOST 33C deposits.The TEOST 33C deposits weight from the oil containing HVIⅠ150 base oil is less than the oil containing HVI Ⅱ 4, HVI Ⅱ+ 4, or HVI Ⅲ 4 base oils. TEOST 33C deposit weight decreases as the base oil viscosity increases. HVI II 10 base oil greatly reduce the weight of TEOST 33C deposits. Increasing the polarity of base oil conduce to reduce the weight of TEOST 33C deposits.

Key words: thermal oxidation, base oil, deposits, XPS