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High-temperature grease and preparation method thereof

A grease, high temperature technology, applied in the field of high temperature grease and its preparation, can solve the problems affecting equipment life, thinning loss, thinning loss of ordinary grease, etc. The effect of reducing, good oil solubility

Inactive Publication Date: 2014-05-21
WUXI FEITIAN GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited high temperature resistance of these greases, there are disadvantages such as thinning and loss, rusting of bearings, and a sharp drop in extreme pressure performance.
Ordinary lubricating grease becomes thinner and lost when it meets water at high temperature, and the consequence is that the bearing will rust or corrode due to the action of water
Therefore, under high temperature working conditions, the extreme pressure performance of the grease will be greatly reduced, which will affect the life of the equipment and increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] High-temperature lubricating grease, wherein the weight ratio of each raw material component is as follows:

[0024] Base oil (synthetic oil): 60 parts;

[0025] Thickener (lithium stearate, lithium 12-hydroxystearate): 35 parts;

[0026] Organosulfur (sulfurized olefin cottonseed oil): 4 parts;

[0027] Anti-rust additive (dodecenyl succinic acid): 0.1 parts;

[0028] The antioxidant is (2,4-diaminodiphenyl ether): 0.9 parts.

Embodiment 2

[0030] High-temperature lubricating grease, wherein the weight ratio of each raw material component is as follows:

[0031] Base oil (mineral oil): 70 parts;

[0032] Thickener (sodium 12-hydroxystearate): 19.5 parts;

[0033] Organic sulfide (dibenzyl disulfide): 2 parts;

[0034] Anti-rust additive (benzotriazepam): 8 parts;

[0035] The antioxidant is (2,4-diaminodiphenyl ether): 0.5 parts.

Embodiment 3

[0037] High-temperature lubricating grease, wherein the weight ratio of each raw material component is as follows:

[0038] Base oil (mineral oil): 90 parts;

[0039] Thickener (sodium oleate): 6 parts;

[0040] Organic sulfide (sulfurized olefin cottonseed oil): 0.5 part;

[0041] Anti-rust additive (benzotriazepam): 1.5 parts;

[0042] The antioxidant is (didodecanyl selenium): 2 parts.

[0043] As a preferred embodiment, a method for preparing high-temperature lubricating grease, the steps are as follows:

[0044] (1) Measure the thickener in the formula, add it to the base oil, heat and stir the base oil, the heating temperature is 60-190°C, and the heating and stirring time is 1-4 hours, so that the thickener is completely melted and dissolved in the base oil, Then cool to room temperature;

[0045] (2) Measure organic sulfides and anti-rust additives, add them to the above blended oil, and mechanically stir at 2000-2500 rpm for 1-2 hours;

[0046] (3) Grind the abo...

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PUM

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Abstract

The invention relates to a high-temperature grease and a preparation method thereof. The high-temperature grease comprises the following raw materials in parts by weight: 60-90 parts of base oil, 6-35 parts of thickening agent, 0.5-4 parts of organic sulfide, 0.1-8 parts of rust-inhibiting additive and 0.5-2 parts of antioxidant. The organic sulfide has favorable oil dissolving property, extreme pressure property, oxidation resistance and capability of lowering friction coefficient, does not lose efficacy under high temperature, and effectively avoids great reduction of extrusion property of grease caused by high temperature.

Description

technical field [0001] The invention relates to a lubricating grease and a preparation method thereof, in particular to a high-temperature lubricating grease with good high temperature resistance and a preparation method thereof. Background technique [0002] Grease is composed of lubricating oil, performance additives and a thickener, which is a well-dispersed system of insoluble solids that form a matrix that holds the oil in a semi-solid state. Greases have some advantages over oils because of their semi-solid consistency. Greases are easier to seal into bearings than oils; greases do not require a circulation system; and greases also act as Sealed to resist contamination. Because of these factors, grease is often the lubricant of choice for ball or roller bearings in electric motors, household appliances, bicycle wheels, mobile equipment wheel and chassis lubrication, and some industrial plain and roller bearings. [0003] The equipment bearings in the production lines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/10C10N30/06
Inventor 张群敏许华平
Owner WUXI FEITIAN GREASE
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