Wide temperature range polyol ester lubricating oil composition suitable for aircraft engine

A technology for lubricating oil composition and aero-engine, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve problems such as difficulty in long-term operation, poor hydrolytic stability of lubricating oil, strong metal corrosion, etc., and achieve hydrolytic stability The effect of strong performance, excellent low temperature start-up performance and excellent lubricating performance

Inactive Publication Date: 2012-12-05
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN102311853A discloses an aviation lubricating oil composition, which uses polyolefin and diester as base oil and is compounded with other components. This type of lubricating oil has poor hydrolytic stability and is difficult to meet the requirements of long-term operation
Patent US675018B1 discloses an ester lubricating oil composition containing polyolefin and an acid-binding agent. Although problems such as coking and deposition have been improved, it is still highly corrosive to metals after long-term use

Method used

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  • Wide temperature range polyol ester lubricating oil composition suitable for aircraft engine
  • Wide temperature range polyol ester lubricating oil composition suitable for aircraft engine
  • Wide temperature range polyol ester lubricating oil composition suitable for aircraft engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The aviation lubricating oil composition is composed of the following components in weight percentage: 90% pentaerythritol oleate, 5% di-tert-dodecyl polysulfide, 2,6-di-tert-butyl-4-hydroxyphenyl propionate 1%, polyisobutylene succinimide (product code T154A) 3%, mercaptobenzotriazole 1%. Add the above-mentioned measured compounds into a stirred reaction kettle in sequence, stir at room temperature for 3-5 hours, take a sample and visually inspect it for uniformity, and then discharge to obtain the product.

Embodiment 2

[0019] The aviation lubricating oil composition is composed of the following components in weight percentage: 70% pentaerythritol oleate, 24% pentaerythritol isooctanoate, 3% di-tertiary dodecyl polysulfide, 0.8% didodecyl diphenylamine , Thiophosphate polyisobutene barium salt (commodity code T108) 2%, propynyl alcohol 0.2%. The preparation method is the same as in Example 1.

Embodiment 3

[0021] The aviation lubricating oil composition is composed of the following components in weight percentage: 85% trimethylolpropane oleate, 8% pentaerythritol enanthate, 4% di-tert-dodecyl polysulfide, 2,6-di-tert- Butyl p-cresol 1%, ultra-high base value synthetic magnesium sulfonate (product code T107) 1%, sarcosinate lauryl 1%. The preparation method is the same as in Example 1.

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Abstract

The invention relates to a wide temperature range polyol ester lubricating oil composition suitable for an aircraft engine. The wide temperature range polyol ester lubricating oil composition suitable for the aircraft engine consists of the following components in percentage by weight: 90-94 percent of polyol ester synthetic base oil, 2-5 percent of an organic polysulfide extreme-pressure wear-resisting agent, 0.5-1 percent of an antioxidant, 1-3 percent of a detergent dispersant and 0.5-1 percent of a corrosion inhibitor. Compared with traditional aircraft lubricating oil, the wide temperature range polyol ester lubricating oil composition has the advantages of excellent low-temperature starting performance, favorable thermal oxidation stability, strong hydrolytic stability, excellent lubricating performance, biodegradability and the like, and can meet the requirements of a modern aircraft engine on long-period rigorous working condition running and wide temperature range use.

Description

technical field [0001] The present invention relates to a lubricating oil composition. More specifically, the present invention relates to a wide temperature range lubricating oil composition suitable for aero-engines, which uses polyol ester compounds as base oils and polysulfide-based additives. Background technique [0002] With the rapid development of aero-engine technology in recent years, its performance has been continuously improved, and the working conditions of aero-engines have become increasingly harsh. Some components of modern high-performance turbofan engines already need to work stably at 1200-1500 °C. Aeroengine lubricating oil needs to take away a lot of heat to keep the engine working stably at a certain temperature while effectively lubricating the engine. Therefore, during the circulation process, lubricating oil needs to go through the process of heat absorption, temperature rise, oxidation, and cooling. In particular, the long-term safe operation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M141/08C10N30/00C10N30/10C10N30/06
Inventor 杨东元段宝民许磊李霁阳刘世川
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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