Extreme pressure lithium-based lubricating grease and preparation method therefor

A lithium-based grease, extreme pressure technology, applied in the direction of lubricating composition, etc., can solve the problems of poor shear stability, poor waterproof performance, high oil separation of steel mesh, etc., and achieve good extreme pressure and anti-wear performance and high dropping point. , good waterproof performance

Inactive Publication Date: 2016-01-13
山东万友石化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The extreme pressure and anti-wear performance needs to be further improved;
[0004] (2) Poor shear stability;
[0006] (4) Poor waterproof performance and easy to be lost;
[0007] (5) The steel mesh has a lot of oil

Method used

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  • Extreme pressure lithium-based lubricating grease and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 A kind of extreme pressure lithium base lubricating grease

[0036] Described extreme pressure lithium base lubricating grease, the mass ratio of each raw material component is:

[0037] 85 parts of base oil, 25 parts of intermediate oil, 2.0 parts of lithium hydroxide, 9 parts of acid for saponification, 0.8 parts of antioxidant, 1.4 parts of extreme pressure and anti-wear agent, 0.1 part of phenolic resin-based glassy carbon microspheres, 0.3 parts of γ-alumina 0.1 part of sodium petroleum sulfonate, 0.9 part of rust inhibitor, and 11 parts of water.

[0038] The base oil, the model is PAO6, the kinematic viscosity (100 ℃) is 5.8mm 2 / s, kinematic viscosity (40°C) is 31mm 2 / s, the pour point is -57°C, and the flash point is 246°C.

[0039] The intermediate oil, model is 250SN, 100 ℃ kinematic viscosity is 8mm 2 / s, the flash point is 230°C, the pour point is -18°C, and the viscosity index is 100.

[0040] The acid for saponification includes lauryl...

Embodiment 2

[0049] Embodiment 2 A kind of extreme pressure lithium base lubricating grease

[0050] Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:

[0051] Described extreme pressure lithium base lubricating grease, the mass ratio of each raw material component is:

[0052] 88 parts of base oil, 27 parts of intermediate oil, 2.2 parts of lithium hydroxide, 10 parts of acid for saponification, 1.0 parts of antioxidant, 1.6 parts of extreme pressure and anti-wear agent, 0.2 parts of phenolic resin-based glassy carbon microspheres, 0.4 parts of γ-alumina 0.3 parts of sodium petroleum sulfonate, 1.1 parts of rust inhibitor, and 12 parts of water.

Embodiment 3

[0053] Embodiment 3 A kind of extreme pressure lithium base lubricating grease

[0054] Adopt the raw material described in embodiment 1, only change the raw material composition of lubricating grease, change into:

[0055] Described extreme pressure lithium base lubricating grease, the mass ratio of each raw material component is:

[0056] 90 parts of base oil, 30 parts of intermediate oil, 2.4 parts of lithium hydroxide, 12 parts of acid for saponification, 1.2 parts of antioxidant, 1.8 parts of extreme pressure and anti-wear agent, 0.3 parts of phenolic resin-based glassy carbon microspheres, 0.5 parts of γ-alumina 0.5 parts of sodium petroleum sulfonate, 1.3 parts of rust inhibitor, and 13 parts of water.

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Abstract

The invention provides extreme pressure lithium-based lubricating grease which comprises the raw material components in parts by mass: 85-90 parts of base oil, 25-30 parts of intermediate oil, 2.0-2.4 parts of lithium hydroxide, 9-12 parts of an acid for saponification, 0.8-1.2 parts of an antioxidant, 1.4-1.8 parts of an extreme pressure wear resistant, 0.1-0.3 part of phenolic resin-based glass carbon microspheres, 0.3-0.5 part of gamma-aluminum oxide, 0.1-0.5 part of petroleum sodium sulfonate, 0.9-1.3 parts of an antirust agent and 11-13 parts of water. The invention provides a preparation method for the lubricating grease. According to the extreme pressure lithium-based lubricating grease prepared by the preparation method provided by the invention, the NLGI consistence is #2; the lubricating grease is non-corrosive to metals; the anti-corrosion property reaches level 1; the similar viscosity (-10 DEG C, 10s<-1>) is 818-822pa.s; the extreme pressure property (by virtue of a four-ball machine process) PB value is 700-720N; and the diameters of the abrasive spots (WSD) ranges from 0.689 mm to 0.690 mm.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to an extreme-pressure lithium-based lubricating grease and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, the requirements for the performance of lubricating grease are becoming increasingly strict, and the division of labor is becoming more and more refined. In order to reduce the wear of friction parts such as bearings, increase the service life of friction parts, improve the load bearing capacity of grease, and prevent or reduce the wear of metal surfaces under medium load conditions, the demand for high-performance extreme pressure lithium-based grease is increasing. In practice, different types of extreme pressure antiwear agents are usually added to improve the extreme pressure performance of extreme pressure greases. The existing extreme pressure lithium-based greases still have the follow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00
Inventor 刘凤霞卢建祥
Owner 山东万友石化股份有限公司
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