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High-performance composite calcium sulfonate based lubricating grease and preparation method thereof

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

Active Publication Date: 2013-06-12
天津市津冠科技发展有限公司
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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 type of grease

Method used

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  • High-performance composite calcium sulfonate based lubricating grease and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

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

[0048] 1) Put 240g of base oil 150BS and 423g of calcium sulfonate with high basic value (TBN is 350mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0049] 2) Add 63g of lauric acid, 5g of methanol, 15g of ethanol and 70g 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 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;

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

Embodiment 2

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

[0056] 1) Put 240g of base oil 150BS and 423g of calcium sulfonate with high basic value (TBN is 350mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0057] 2) Add 63g of lauric acid, 22g of ethanol and 70g 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);

[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;...

Embodiment 3

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

[0064] 1) Put 240g of base oil 150BS and 423g of calcium sulfonate with high basic value (TBN: 400mgKOH / g) in a reaction kettle, heat to 80-90°C, and keep stirring in this temperature range for 40min;

[0065] 2) Add 63g of lauric acid, 5g of methanol, 15g of ethanol and 70g 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);

[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 add 0.2g of HL-fu...

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Abstract

The invention relates to high-performance composite calcium sulfonate based lubricating grease and a preparation method thereof. The composite calcium sulfonate based lubricating grease is prepared from the following raw materials: high-alkali-value calcium sulfonate, base oil, lauric acid, low-molecular alcohol, high-purity water, boric acid, calcium hydroxide, antioxidant and HL-functional agent. The composite calcium sulfonate based lubricating grease provided by the invention has the characteristic of excellent high-temperature resistance, water resistance and extreme pressure wear resistance; and in particularly, the converted calcium carbonate is uniform in crystalline grain distribution, so that the product is very stable in structure, thus solving the problem of the surface hardening of the composite calcium sulfonate-based lubricating grease.

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): C10M169/04C10N50/10
Inventor 闫洪冯荣宇杨金明崔彦兵
Owner 天津市津冠科技发展有限公司
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