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Polyurea calcium acetate lubricating grease and preparation method thereof

A technology of lubricating grease and calcium acetate, applied in lubricating compositions, petroleum industry, etc., can solve the problems of short service life, poor colloidal stability of lubricating grease, thinning and loss of lubricating grease, etc., and achieve good colloidal stability and good colloidal stability The effect of high resistance and good water resistance

Inactive Publication Date: 2012-06-20
无锡惠源高级润滑油有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The lubrication of mechanical equipment used under harsh working conditions, such as high temperature, heavy load, humidity (water shower), acid-base medium and other harsh working conditions, uses general extreme pressure lithium-based grease Or extreme pressure lithium complex grease is difficult to meet the use requirements
For example, steelmaking equipment mostly works under high temperature, humidity or water spraying conditions. When using extreme pressure lithium-based grease or extreme-pressure lithium-based composite grease, the grease will easily become thinner and lost at high temperature.
At the same time, under the action of water, the colloidal stability of these lubricating greases is extremely poor, which will also lead to thinning and loss of lubricating grease, resulting in poor lubrication of equipment and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the reaction vessel, add 180.5 kg of 120BS and 30 kg of MDI, stir and heat to raise the temperature to 40-50°C, add 64.6 kg of melted stearylamine, heat and raise the temperature to 100-110°C, stir and react at a constant temperature for 10 minutes. Add 395 kg of synthetic calcium sulfonate with a total alkali value of 300 mgKOH / g into the reaction vessel, and slowly add 120 kg of glacial acetic acid under stirring. After the addition, stir and heat to 150-160°C, add 10 kg of diphenylamine antioxidant and 1 kg of benzotriazole anti-corrosion additive, stir and mix for 5 minutes, and stop heating. Add 198.9 kg of 120BS with stirring and cool to 80-100°C, homogenize and degas to obtain the product. The properties of the product obtained in this example are shown in Table 1.

Embodiment 2

[0022] In the reaction vessel, add 180.5 kg of HVI500 and 30 kg of MDI, stir and heat to raise the temperature to 40-50°C, add 64.6 kg of molten octadecylamine, heat and raise the temperature to 100-110°C, stir and react at a constant temperature for 10 minutes. Add 437 kg of calcium petroleum sulfonate with a total alkali value of 270 mgKOH / g into the reaction vessel, and slowly add 120 kg of glacial acetic acid under stirring. After the addition, stir and raise the temperature to 150-160°C, add 2 kg of diisooctyl diphenylamine antioxidant and 3 kg of T561, stir and mix for 5 minutes, and stop heating. Add 162.9 kg of 150BS with stirring and cool to 80-100°C, homogenize and degas to obtain the product. The properties of the product obtained in this example are shown in Table 1.

Embodiment 3

[0024] In the reaction vessel, add 200 kg of No. 100 mechanical oil and 40 kg of MDI, stir and heat up to 40-50℃, add 43 kg of melted octadecylamine and 19.8 kg of cyclohexylamine, heat up to 100-110℃, stir React at constant temperature for 10 minutes. Add 245 kg of calcium petroleum sulfonate with a total alkali value of 400 mgKOH / g into the reaction vessel, and slowly add 100 kg of glacial acetic acid under stirring. After the addition, stir and heat to 150-160°C, add 1 kg of diisooctyl diphenylamine antioxidant, 3 kg of diphenylamine and 0.5 kg of T551, stir and mix for 5 minutes, and stop heating. Add 347.7 kg of 150BS with stirring and cool to 80-100°C, homogenize and degas to obtain the product. The properties of the product obtained in this example are shown in Table 1.

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PUM

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Abstract

The invention relates to polyurea calcium acetate lubricating grease and a preparation method thereof. The polyurea calcium acetate lubricating grease comprises the following components in percentage based on the total weight of the raw materials of the lubricating grease: 25-63% of base oil, 3-5% of 4,4'-methylene bis(phenyl isocyanate), 2-10% of organic amine, 20-55% of high-base-number calcium sulfonate, 10-15% of glacial acetic acid, 0.1-1% of antioxidant and 0.01-0.3% of corrosion inhibitor. Meanwhile, the invention also provides a preparation method realizing high yield and good quality. Compared with the common extreme pressure lithium-based lubricating grease and extreme pressure complex lithium-based lubricating grease, the polyurea calcium acetate lubricating grease provided by the invention has excellent anti-wear extreme pressure performance, antirust performance, colloid stability and water resistance without adding the additives such as extreme pressure anti-wear additives, antirust agents and the like.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to a polyurea calcium acetate lubricating grease and a preparation method thereof. Background technique [0002] The lubrication of mechanical equipment used under harsh working conditions, such as high temperature, heavy load, humidity (water shower), acid-base medium and other harsh working conditions, uses general extreme pressure lithium-based grease Or extreme pressure lithium complex grease is difficult to meet the requirements of use. For example, steelmaking equipment mostly works under high temperature, humidity or water spraying conditions. When using extreme pressure lithium-based grease or extreme-pressure lithium composite grease, the grease is easy to become thin and lose at high temperature. At the same time, under the action of water, the colloidal stability of these lubricating greases is extremely poor, which will also lead to thinning and loss of lubricating grease, res...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N30/06C10N30/12
Inventor 冯克权缪冬琴
Owner 无锡惠源高级润滑油有限公司
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