Complex lithium base grease and preparation method thereof

A complex lithium-based grease technology, applied in the field of grease, can solve the problems of low production efficiency, long heating and dehydration time, and large energy consumption of complex lithium-based grease, achieving good mechanical stability, fast and sufficient saponification reaction, Energy saving effect

Active Publication Date: 2011-03-30
无锡中石油润滑脂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method takes a long time to heat up and dehydrate, consumes a lot of energy, and requires a good stirring effect to ensure a sufficient and uniform reaction. Therefore, the current production efficiency of complex lithium-based grease is still low.

Method used

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  • Complex lithium base grease and preparation method thereof
  • Complex lithium base grease and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment one: a kind of preparation method of composite lithium base lubricating grease comprises the following processing steps:

[0024] (1) Saponification: Add 118g of base oil in the reactor: polyalphaolefin and 22g of dibasic organic acid: sebacic acid, heat up to 130°C, and the heating time is 10min, so that dibasic organic acid: sebacic acid is completely Melt; add 55g monobasic organic acid: lauryl hydroxystearic acid, react for 3min; add 118g base oil: polyalphaolefin, make the material in the reactor cool to 85 ℃, add 27.5g lithium hydroxide oil solution to carry out saponification, saponification The temperature is 100°C, after 10 minutes of reaction;

[0025] (2) Rapidly heat up the reactor to 200°C, the heating rate is: 1°C / min, keep the constant temperature for 10min, add 118g of base oil: polyalphaolefin, move the material in the reactor to the intermediate kettle, and transfer it to Add 118g of base oil: polyalphaolefin into the intermediate kettle, a...

Embodiment 2

[0027] Embodiment two: a kind of preparation method of composite lithium base lubricating grease comprises the following processing steps:

[0028] (1) Saponification: add 117g of base oil to the reactor: 150BS and 30g of dibasic organic acid: sebacic acid, heat up to 135°C, and heat up for 5min to completely melt the dibasic organic acid: sebacic acid; Add 72g of monobasic organic acid: lauryl hydroxystearic acid, and react for 5 minutes; add 117g of base oil: 150BS, cool the material in the reactor to 82°C, add 35.8g of lithium hydroxide oil solution for saponification, and the saponification temperature is 102°C , after 12 minutes of reaction;

[0029] (2) Rapidly raise the temperature of the reactor to 205°C, the heating rate is: 2°C / min, keep the constant temperature for 12min, add 117g of base oil: 150BS, move the materials in the reactor to the intermediate kettle, and transfer them to the intermediate kettle Add 117g of base oil: 150BS, and carry out circulating cooli...

Embodiment 3

[0031] Embodiment three: a kind of preparation method of composite lithium base lubricating grease comprises the following processing steps:

[0032] (1) Saponification: Add 110g of base oil in the reactor: polyalphaolefin and 36g of dibasic organic acid: sebacic acid, heat up to 140°C, and the heating time is 8min, so that dibasic organic acid: sebacic acid is completely Melt; add 84g monobasic organic acid: stearic acid, react for 4min; add 110g base oil: polyalphaolefin, make the material in the reactor cool to 85 ℃, add 38g lithium hydroxide oil solution to carry out saponification, saponification temperature is 105 ℃ , after reacting for 15min; the mass percent concentration of the lithium hydroxide oil solution is 35%;

[0033] (2) The reactor is rapidly heated to 210°C, the heating rate is 2°C / min, and the constant temperature is maintained for 15min. After adding 110g of base oil: polyalphaolefin, the materials in the reactor are moved to the intermediate kettle, and a...

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Abstract

The invention relates to complex lithium base grease and a preparation method thereof. The preparation method comprises the following processes of: adding 1/4 of base oil and dibasic organic acid into a reaction kettle, heating and melting, and adding monobasic organic acid for reaction; adding 1/4 of base oil, cooling the base oil, and adding lithium hydroxide oil solution for saponification andwarming; adding 1/4 of base oil, moving materials in the reaction kettle to an intermediate kettle, adding the rest 1/4 of base oil into the intermediate kettle, and circulating and cooling; adding an antioxidant, a corrosion inhibitor and an extreme pressure antiwear additive; and uniformly stirring, homogenizing and degassing to obtain the complex lithium base grease. The complex lithium base grease has a simple process, the time for producing the complex lithium base grease with a normal-pressure kettle is short, energy resources are saved, production cost is reduced, the utilization rate of equipment is improved, and the saponification reaction is quick and full.

Description

technical field [0001] The invention relates to a lubricating grease, in particular to a lithium-composite lubricating grease and a preparation method thereof. Background technique [0002] Lithium complex grease has excellent mechanical stability and colloidal stability. It is the most widely used type representative of high-performance lubricating grease. One of the promising grease varieties. With the rapid development of my country's automobile, steel, textile, paper and other industries, the maximum operating temperature of grease is required to be above 200°C, and it can maintain good structural stability and lubricating performance in a large amount of water environment. Ordinary lithium complex greases are difficult to meet such harsh lubricating requirements. [0003] There are many patents at home and abroad on the composition and preparation methods of lithium-composite greases, such as: U.S. patents USP3681242, USP4897210; Chinese patents CN1055384A, CN1052890A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N30/06
Inventor 安华瑞褚铭铭施江波杨晓钧蒋和清
Owner 无锡中石油润滑脂有限责任公司
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