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Lubricating grease composition and preparation method thereof

A grease composition and the technology of the composition, applied in the field of grease, can solve the problems of difficult quality control, complicated process, poor heat resistance of grease, etc.

Active Publication Date: 2019-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of lubricating grease, it is necessary to convert the high alkali value calcium sulfonate and calcium alkylphenate of Newtonian fluid into non-Newtonian fluid, the process is complicated, the quality control is difficult, and the heat resistance of lubricating grease is not good.

Method used

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  • Lubricating grease composition and preparation method thereof
  • Lubricating grease composition and preparation method thereof
  • Lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In the reaction kettle, add 480g of mineral oil, 160g of dodecylbenzenesulfonic acid (melting point: 10°C, boiling point: 315°C) and 100g of water, stir evenly, gradually add 61.6g of calcium hydroxide, heat up to 80°C and stir for 10 minutes , then add 160g o-toluic acid (melting point is 108°C, boiling point is 259°C) and 100g water resistant agent aluminum stearate, heat up to 150°C and stir evenly, keep stirring for 15min to make the material fully react, then add 100g mineral oil, continue to stir and cool to room temperature, after the material is cooled, the grease composition sample of the present embodiment is obtained through three-wheel mill grinding, wherein the thickener obtained in the reaction process is calcium dodecylbenzenesulfonate of 169.3g and 182.3 g of calcium o-toluate. The test product properties are listed in Table 1.

[0058] In the grease composition prepared in this embodiment, the weight ratio of calcium dodecylbenzenesulfonate to calcium ...

Embodiment 2

[0060] In the reaction kettle, add 480g of mineral oil, 150g of dodecylbenzenesulfonic acid (melting point is 10°C, boiling point is 315°C) and 100g of water, stir evenly, gradually add 78.1g of calcium carbonate, heat up to 70°C and stir for 15min , then add 150g of o-toluic acid (melting point is 108°C, boiling point is 259°C) and 120g of water-resistant agent aluminum octanoate, heat up to 150°C and stir evenly, keep stirring for 15min to make the material fully react, then add 100g of mineral oil, Continue to stir and cool to room temperature. After the material is cooled, the grease composition sample of the present embodiment is obtained through three-wheel mill grinding. Wherein, the thickener obtained in the reaction process is 158.7 g of calcium dodecylbenzenesulfonate and 170.9 g of calcium dodecylbenzenesulfonate. g of calcium o-toluate. The test product properties are listed in Table 1.

[0061] In the grease composition prepared in this embodiment, the weight rat...

Embodiment 3

[0063] In the reaction kettle, add 450g of mineral oil, 200g of medium alkylbenzenesulfonic acid (purchased from Nanjing Shengxiong Chemical Co., Ltd., the product number is MABS, the acid value is 121mgKOH / g, the melting point is 15°C, and the boiling point is 318°C) and 100g of water, stir evenly, gradually add 76.7g of calcium carbonate, heat up to 80°C and stir for 15 minutes, then add 150g of p-toluic acid (melting point is 183°C, boiling point is 275°C) and 150g of water-resistant agent 12-hydroxyhard Aluminum fatty acid, heat up to 140°C and stir evenly, heat and stir for 15 minutes to make the material fully react, then add 100g of mineral oil, continue stirring and cool to room temperature, after the material is cooled, it is ground by a three-wheel mill to obtain the grease combination of this embodiment Product sample, wherein, the thickener obtained in the reaction process is the calcium p-toluate of 208.6g calcium benzene sulfonate and 170.9g. The test product pro...

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Abstract

The present invention relates to a lubricating grease composition and a preparation method thereof. The lubricating grease composition comprises base oil, a thickener and an additive, wherein the thickener is a first organic acid calcium salt and a second organic acid calcium salt, the first organic acid calcium salt is obtained by carrying out a reaction on a first organic acid and a calcium-containing alkaline compound, the second organic acid calcium salt is obtained by carrying out a reaction on a second organic acid and a calcium-containing alkaline compound, the melting point of the first organic acid does not exceed 30 DEG C, the melting point of the second organic acid does not exceed 50-200 DEG C, a weight ratio of the first organic acid calcium salt to the second organic acid calcium salt is 1:(0.1-10), the additive comprises a water repellent, and the water repellent is a fatty acid aluminum salt. According to the present invention, the lubricating grease has good water resistance, and further has comprehensive performances of good colloidal stability and the like, the preparation process is simple, and the quality is easily controlled.

Description

technical field [0001] The present disclosure relates to the technical field of grease, in particular, to a grease composition and a preparation method thereof. Background technique [0002] Calcium complex grease has a high dropping point and can be applied to high temperature parts. [0003] Patent CN102604724A mentions the composition of the composite calcium-based grease thickener, including calcium benzoate, calcium salicylate, calcium borate, calcium acetate, calcium octanoate and calcium 12-hydroxystearate. In order to improve the performance of grease, Additives such as graphite and tungsten disulfide are also added. And in the patent CN100412179A, in addition to including the composite calcium thickener and additives in the patent CN102604724A, 12-hydroxy lithium stearate is added as a part of the thickener. Regardless of whether the above lubricating grease composition is calcium complex or calcium-lithium complex, the heat resistance of the lubricating grease is...

Claims

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Application Information

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IPC IPC(8): C10M169/06
CPCC10M169/06C10M2203/1006C10M2207/122C10M2207/1245C10M2207/126C10M2207/1265C10M2207/1276C10M2207/128C10M2207/1285C10M2207/1415C10M2207/1446C10M2207/166C10M2219/0445C10N2030/04C10N2030/26C10N2010/06C10N2010/04
Inventor 姚立丹杨海宁孙洪伟
Owner CHINA PETROLEUM & CHEM CORP
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