Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aviation lubricating oil composition

A technology of aviation lubricating oil and composition, which is applied in the field of lubricating oil and can solve problems such as easy coking and coking

Inactive Publication Date: 2012-07-18
PLA AIR FORCE OIL MATERIAL RES INST
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, naphthylamine antioxidants are commonly used as typical antioxidants at higher temperatures, but they are prone to coking when used at this temperature, and the higher the working temperature, the more serious the coking

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aviation lubricating oil composition
  • Aviation lubricating oil composition
  • Aviation lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0037] According to the ratio shown in Table 3, the synthetic aviation lubricating oil composition of 4 centistokes was prepared; the preparation method was the conventional preparation method in the prior art.

[0038] Table 3: Based on the total weight of the lubricating oil composition (%)

[0039] Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Synthetic base oil

margin

margin

margin

margin

margin

margin

NHA11

0.5

0.8

0.3

0.2

0.5

0.7

p,p-Diisooctyldiphenylamine

0.5

0.8

1.0

1.0

0.8

0.5

N-Phenyl-α-naphthylamine

0.2

0.5

0.3

0.2

0.5

0.4

Additin RC7115

0.6

0.5

0.8

1.0

0.6

0.8

Tricresyl Phosphate

2.5

2.5

2.0

2.2

2.4

2.0

benzotriazole

0.06

0.1

0.08

0.1

0.1

0.05

Non-silicon type antifo...

Embodiment 7～12

[0058] According to the ratio shown in Table 6, the synthetic aviation lubricating oil composition of 4 centistokes was prepared; its preparation method was a conventional preparation method in the prior art.

[0059] Table 6: Based on the total weight of the lubricating oil composition (%)

[0060] Example 7

[0061] Tricresyl Phosphate

[0062] Among them, the preparation method of synthetic base oil and NHA11 refers to Example 1.

experiment example 1

[0064] Using the oxidation test method "ASTM D4636-Standard Test Method for Corrosion and Oxidation Stability of Hydraulic Oils, Aviation Turbine Engine Lubricants, and Other Deeply Refined Oils" required by 4 centistokes, by adding NHA11 to the developed base oil and mixing it with aviation Antioxidants in the traditional formulation of lubricating oil were used in combination, and the oxidation corrosion tests were carried out at 200 °C for 96 hours and 220 °C for 40 hours respectively. The results are shown in Table 8 and Table 9.

[0065] Table 7: Comparative Example Preparation:

[0066]

[0067] Based on the total weight of the lubricating oil composition (%), other components are the same as in Example 1.

[0068] Table 8: Oxidation test results at 200℃, 96h

[0069]

[0070] Table 9: Oxidation test results at 220°C, 40h

[0071]

[0072] As can be seen from Table 8 and Table 9, by using the styrenated amine antioxidant NHA11 in combination with p, p-diisooct...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of lubricating oil, in particular to a four-centisthene synthetic aviation lubricating oil composition. The composition consists of the following components in percentage by weight: 1.4-3.3 percent of antioxidant mixture, 2-4 percent of triorthocresol phosphate, 0.05-0.1 percent of benzotriazol, 10-100 ppm of non-silicon antifoaming agent and the balance synthetic basic oil, wherein the antioxidant mixture consists of 0.2-0.8 percent by weight of styrenated amine antioxidant NHA11, 0.5-1.0 percent by weight of para,para-di-iso-octyldiphenylamine, 0.2-0.5 percent by weight of N-phenyl-alpha-naphthylamine and 0.5-1.0 percent by weight of sterically hindered phenol antioxidant. The four-centisthene synthetic aviation lubricating oil composition disclosed bythe invention is suitable to be used at high and low temperatures, and has high oxidation resistance and high wear resistance.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to a 4 centistoke synthetic aviation lubricating oil composition. Background technique [0002] At present, the lubricating oils used in current aircraft turbine engines in my country are basically ester oils or synthetic hydrocarbon oils, such as 4109 synthetic aviation lubricating oils that conform to MIL-PRF-7808 or GJB135 specifications, I1 / 2 type oils; conform to TY38. 1011299-90 or GJB5097 specification 928 aviation lubricating oil, I1 / 2 type oil; 4050, 4106 and 925 synthetic aviation lubricating oil in accordance with MIL-PRF-23699 or GJB1263 specification, type II oil. Among them, type I1 / 2 oil can meet the requirements of low temperature start-up below -50 ℃ due to its low viscosity, but its high temperature performance is poor. Generally, the maximum temperature for long-term use does not exceed 175 ℃, commonly known as "3 centistoke oil"; while type II oil The oil has good ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/06C10M133/12C10M129/14C10N30/10C10N30/06
Inventor 徐敏顾鹏翔刘爱全张亮
Owner PLA AIR FORCE OIL MATERIAL RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com