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High temperature aircraft engine lubricating oil

A technology for aero-engines and lubricating oils, applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems that no one has reported the preparation method, and achieve good tribological properties, excellent friction reduction, and simple preparation process

Inactive Publication Date: 2016-01-20
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no one has reported the preparation of in-situ generated ionic liquids as high-temperature lubricating oils, and studied them at high temperatures of 300 o The tribological properties of C

Method used

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  • High temperature aircraft engine lubricating oil
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  • High temperature aircraft engine lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 10g of trimethylolpropane oleate (TMPTO) was added to three 50mL single-necked flasks, and then 12.3wt%, 21.8wt% and 29wt% of lithium bistrifluoromethanesulfonimide (LiTFSI) were added, respectively. 50~90 o C under stirring until the oil product is clear, and the molar ratios of TMPTO and LiTFSI are respectively 1:0.5, 1:1 and 1:1.5 ionic liquids.

Embodiment 2

[0022] 10g of pentaerythritol oleate (PETO) was added to three 50mL single-necked flasks, and then 10.7wt%, 19wt% and 26wt% of lithium bistrifluoromethanesulfonimide (LiTFSI) were added, at 50~90 o C under stirring until the oil product is clarified, the ionic liquids whose molar ratios of PETO and LiTFSI are 1:0.5, 1:1 and 1:1.5 are obtained respectively.

[0023] structural analysis

[0024] Determination of TMPTO and PETO by INOVA-400M nuclear magnetic resonance spectrometer and after adding different molar ratios of LiTFSI 1 H-NMR and 13 C-NMR spectrum. The results show that the methylene group attached to the carbonyl carbon (-CH 2 -) proton chemical shifts all move to the lower magnetic field, and the chemical shifts of the C atoms in the carbonyl carbon also obviously shift to the lower magnetic field. These results indicate that the Li in LiTFSI + A coordination bond is formed with the lone pair of electrons on the O atom in the carbonyl carbon, resulting in a more...

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Abstract

The invention discloses high temperature aircraft engine lubricating oil. A preparation method of the lubricating oil comprises the steps that lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) is added to polyol ester, and stirring is conducted at the temperature ranging from 50 DEG C to 90 DEG C till clarification is achieved. According to the high temperature aircraft engine lubricating oil, the preparation process is simple and environmentally friendly, and high heat stability and good tribological property are achieved.

Description

technical field [0001] The invention relates to a high-temperature aviation engine lubricating oil. Background technique [0002] With the rapid development of aero-engines and the gradual pursuit of high power, lubricants are required to have stable performance in harsh environments, such harsh environments include high temperature, severe vibration, etc., and this development trend is still being strengthened, especially under high temperature environment. In the early 1980s, according to the development trend of aviation turbine engines, the U.S. Air Force proposed the basic performance indicators of ideal lubricating oils that meet the working requirements of future engines. 260~427 o C, has exceeded the high temperature limit that ester oil can withstand. In order to meet the needs of future aero-engines for high-temperature lubricants, it is necessary to develop new high-temperature lubricants. [0003] Although many new high-temperature lubricants have been deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/08C10N40/25C10N30/06C10N30/08
Inventor 王晓波吴新虎刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI