High-performance calcium sulfonate complex grease and preparation method thereof

A technology of composite calcium sulfonate and high base value calcium sulfonate, which is applied in the field of metallurgical grease, can solve the problems of poor high temperature performance, reduced total surface area of ​​particle phase, low sintering load of grease, etc., and achieve extreme pressure and anti-wear performance Excellent, solve the problem of surface hardening, the effect of stable product structure

Inactive Publication Date: 2014-07-30
青州市东能润滑油脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the content of calcium carbonate is insufficient or the calcium carbonate in it is not completely converted from the amorphous form to the calcite crystal form, the grease will be soft, the high temperature performance will be poor, and the sintering load of the grease will be low
In addition, the grain size and particle size distribution of calcium carbonate in the calcite crystal form after conversion will also affect the hardening of the complex calcium sulfonate-based grease to a large extent from the Ostwald aging theory, that is, the complex calcium sulfonate-based grease in During the storage process, due to the uneven particle size distribution, there will be a tendency for the total surface area of ​​the particle phase to decrease, so that the small particles will be gradually consumed, and the large particles will gradually grow up, thus accelerating the surface hardening of this kind of grease

Method used

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  • High-performance calcium sulfonate complex grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of high-performance composite calcium sulfonate-based grease, comprising the steps of:

[0048] 1) Put 2409 base oil 150BS and 4239 high base value calcium sulfonate (TBN: 350mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0049] 2) Add 639 g of lauric acid, 5 g of methanol, 15 g of ethanol and 70 g of high-purity water to the mixture obtained in step 1), and keep stirring continuously at 80-90 ° C until the conversion is complete (detected by infrared spectroscopy);

[0050] 3) After the conversion is completed, heat up the tough material obtained in step 2) to 100-110°C, add 2.8g of boric acid and 5.7g of calcium hydroxide in sequence, and continue stirring for 30 minutes; then continue to heat up to 200-210°C, and add 2.4g of dihydrogen Aniline is used as an antioxidant, and stirred for 10min;

[0051] 4) Naturally cool the material obtained in step 3) to 90-100°C, and add 0.2g of HL-funct...

Embodiment 2

[0055] A preparation method of high-performance composite calcium sulfonate-based lubricating grease, comprising the steps of:

[0056] 1) Put 2409 base oil 150BS and 4239 high base value calcium sulfonate (TBN: 350mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0057] 2) Add 639 lauric acid, 229 ethanol and 709 high-purity water to the mixture obtained in step 1), and keep stirring continuously at 80-90°C until the conversion is complete (detected by infrared spectroscopy);

[0058]3) After the conversion is completed, heat up the material obtained in step 2) to 100-110°C, add 2.8g of boric acid and 5.7g of calcium hydroxide in sequence, and continue stirring for 30 minutes; then continue to heat up to 200-210°C, and add 2.4g of diphenylamine As an antioxidant, and stirred for 10 minutes;

[0059] 4) Naturally cool the material obtained in step 3) to 90-100°C, and add 0.2g of HL-functional agent;

[0060] 5) Finished ...

Embodiment 3

[0063] A preparation method of high-performance composite calcium sulfonate-based lubricating grease, comprising the steps of:

[0064] 1) Put 2409 base oil 150BS and 4239 high base value calcium sulfonate (TBN: 400mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0065] 2) Add 639 g of lauric acid, 5 g of methanol, 15 g of ethanol and 70 g of high-purity water into the mixture obtained in step 1), and keep fully and continuously stirring at 80-90 ° C, and react until the conversion is complete (detected by infrared spectroscopy);

[0066] 3) After the conversion is completed, heat up the material obtained in step 2) to 100-110°C, add 2.8g of boric acid and 5.7g of calcium hydroxide in sequence, and continue stirring for 30 minutes; then continue to heat up to 200-210°C, and add 2.4g of diphenylamine As an antioxidant, and stirred for 10 minutes;

[0067] 4) Naturally cool the material obtained in step 3) to 90-100°C, and...

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Abstract

The invention relates to high-performance calcium sulfonate complex grease and a preparation method thereof. The calcium sulfonate complex grease is prepared from the following raw materials: high-base-number calcium sulfonate, base oil, lauric acid, low-molecular-weight alcohol, high-purity water, boric acid, calcium hydroxide, an antioxidant, and an HL functional additive. The high-performance calcium sulfonate complex grease has the characteristics of being resistant to high temperature, resistant to water, and outstanding in extreme-pressure antiwear property, particularly realizing the uniform distribution of converted calcium carbonate crystal grain, ensuring stable structure, and also solving the problem of surface hardening.

Description

technical field [0001] The invention belongs to the technical field of metallurgical lubricating grease, in particular to a high-performance composite calcium sulfonate-based lubricating grease and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, the requirements for lubricating grease are getting higher and higher, and high-quality and multi-effect lubricating grease is the direction of its development. Composite calcium sulfonate grease is a new type of grease, it has excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance, excellent rust resistance and extreme pressure resistance Abrasiveness, in many respects exceeds the performance of other high temperature greases such as lithium complex grease, aluminum complex grease and polyurea grease. This kind of lubricating grease is especially suitable for the lubrication of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/08C10N50/10
Inventor 司明礼陈洲
Owner 青州市东能润滑油脂有限公司
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