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Rare-earth-based lubricating grease and preparation method thereof

A grease, rare earth-based technology, applied in the field of rare-earth-based grease and its preparation, can solve the problems of complex composition and cannot be realized by one-step reaction, and achieve the advantages of reducing friction, excellent lubricating effect and anti-corrosion effect, and reducing production efficiency. Effect

Active Publication Date: 2021-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a rare-earth base lubricating grease and its preparation method in order to overcome the problems existing in the prior art that the composition is complex and cannot be realized by one-step reaction. The lubricating grease has simple composition, excellent performance, simple preparation process, and wear Excellent performance and extreme pressure performance

Method used

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  • Rare-earth-based lubricating grease and preparation method thereof
  • Rare-earth-based lubricating grease and preparation method thereof
  • Rare-earth-based lubricating grease and preparation method thereof

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Embodiment approach

[0045] According to a preferred embodiment of the present invention, the method includes: mixing and heating the organic acid and a part of the base oil to 50-90°C to dissolve the organic acid, and then adding the rare earth element precursor dissolved in another part of the base oil; stirring After uniformity, raise the temperature to 80-100°C for a full reaction for 0.5-2 hours, then raise the temperature to 120-140°C for dehydration; then add the remaining base oil and refine at 180-220°C for 5-30 minutes, and wait for it to cool down to 60-120°C Add optional additives at around ℃; finally cool to room temperature, grind and homogenize to obtain rare earth base grease. Wherein, the sum of the amount of a part of base oil, another part of base oil and the remaining base oil is the total amount of base oil used. In the present invention, the weight ratio of the three is preferably 1:0.1-2:0.5-3 .

[0046] The present invention also provides the rare earth-based lubricating g...

Embodiment 1

[0049] Add 200g of 150BS quenching oil (the kinematic viscosity at 100°C is 31mm 2 / s, purchased from Karamay Petrochemical Company, hereinafter the same), add 43.45g of 12-hydroxystearic acid, heat to 60°C, this is solution 1. Add 9.15g of lanthanum hydroxide to 100g of 150BS base oil, raise the temperature to 60°C and slowly add to the above solution 1. After stirring evenly, raise the temperature to 100°C to fully react for 1 hour, then raise the temperature to 140°C to remove water, and then raise the temperature to 200°C for refining for 10 minutes. Finally, add 150g of 150BS quenching oil, cool to 110°C, add 10g of diphenylamine and 10g of barium petroleum sulfonate, grind and homogenize, and obtain rare earth lanthanum-based grease, whose infrared spectrum is shown in figure 1 ,from figure 1 As can be seen in the 1548cm -1 There is an absorption peak at , indicating that lanthanum exists in the form of fatty acid lanthanum.

Embodiment 2

[0051] Add 43.13g of stearic acid to 200g of 150BS quenching oil, heat to 60°C, this is solution 1. Add 9.6g of lanthanum hydroxide to 100g of 150BS base oil, raise the temperature to 60°C and slowly add to the above solution 1. After stirring evenly, raise the temperature to 100°C for full reaction for 1 hour, then raise the temperature to 140°C to remove water, and then raise the temperature to 200°C for refining for 10 minutes. Finally, add 150g of 150BS quenching oil, cool to 90°C, add 10g of 2,6-di-tert-butyl-p-cresol and 10g of dodecenylsuccinic acid, grind and homogenize to obtain rare earth lanthanum-based grease, and its infrared spectrum and figure 1 Similar, at 1548cm -1 has an absorption peak.

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Abstract

The invention relates to the field of lubricants, and discloses rare-earth-based lubricating grease and a preparation method thereof. The rare-earth-based lubricating grease is characterized in that a thickening agent of the rare-earth-based lubricating grease is organic acid salt of rare earth elements, and the use amount of the thickening agent is 5-70 g relative to 100 g of base oil. Compared with the prior art, the lubricating grease disclosed by the invention does not need to introduce a third component such as polyurea or a rare earth compound in other forms as a thickening agent. The rare earth-based lubricating grease provided by the invention has the advantages of simple preparation process, excellent extreme pressure property, excellent wear resistance and the like, can be suitable for severe working conditions such as high temperature and high load, can be applied to various running equipment such as mechanical bearings, gears, transmission rods and the like in multiple industrial fields such as electric appliances, steel, automobiles and papermaking, and has a better application prospect.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to rare earth-based lubricating grease and a preparation method thereof. Background technique [0002] The development of high-end equipment manufacturing industry puts forward strict requirements on the performance of lubricating grease products. For the bearings and gears of mechanical equipment, improper selection of grease will significantly reduce the service life of the equipment, reduce production efficiency, and increase production costs. It is of great significance to meet the lubricating performance requirements of the ever-growing machinery industry through the development and use of lubricating grease with excellent performance, and it is also the development direction of lubricating grease in the future. [0003] Grease consists of base oil, thickener and additives. According to the type of thickener, it can be divided into soap thickener and non-soap thickener. All kinds of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/02C10N30/06C10N30/08C10N30/10C10N40/02C10N40/04C10N50/10
CPCC10M169/02C10M2207/1265C10M2207/1285C10M2207/026C10M2207/127C10M2215/064C10M2219/044
Inventor 文帅孙洪伟庄敏阳何懿峰刘欣阳陈靖
Owner CHINA PETROLEUM & CHEM CORP
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