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Compound calcium sulfonate base lubricating grease and preparation method thereof

A technology of compound calcium sulfonate and lubricating grease, used in lubricating compositions, petroleum industry and other directions, can solve the problems of poor centralized lubricity, low extreme pressure performance, unfriendly environment, etc., and achieve low cost and extended service life , Reasonable effect of raw material formula

Active Publication Date: 2014-03-19
XINXIANG HENGXING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to problems in raw materials, proportioning and production method control in the current production process, the complex calcium sulfonate-based grease produced cannot meet the requirements of use in many harsh environments. Grease mainly has the following disadvantages: it is not resistant to high temperature, and its dropping point is at 280 o Below C; the extreme pressure performance is not great: four-ball P B The value is generally below 1000N; the service life is short; the concentrated lubricity is not good: -20 o The low temperature similar viscosity of C is above 800
Even if the current research status can prepare complex calcium sulfonate-based grease with excellent performance, the cost is high and it is not friendly to the environment, so it is difficult to produce on a large scale to meet the needs of industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Put 230kg of composite calcium sulfonate whose base value is greater than 320KOH / g into the pressure reactor, 130kg of base oil, and heat up to 50 o C, add conversion agent ethanol 23kg and dry ice 12kg in the reactor, then cover, when the pressure exceeds 0.2MPa, release the pressure, keep the pressure not more than 0.2MPa, and heat up to 83 o C after constant temperature 30min, add 8kg acetic acid (pre-diluted with water of 3 times the quality of acetic acid) and 12-hydroxy fatty acid 7.5kg, heat up to 88 o C~90 o C constant temperature for 1.5h, when the material becomes thick, add 4kg of calcium hydroxide (diluted with water 3 times the mass of calcium hydroxide), stir for 10min, add 5kg boric acid (diluted with water 4 times the mass of boric acid, and heat to 95 o C, making it a hot water solution), continue heating at 88 o C~90 o C constant temperature 20min, then warm up to 180 o C constant temperature for 10min, after the constant temperature is ove...

Embodiment 2

[0012] Put 220kg of compound calcium sulfonate with alkali value greater than 320KOH / g in the pressure reactor, 120kg of mineral oil, and heat up to 50 o C, add 22kg of conversion agent methanol and 10kg of dry ice into the reactor, then cover it, release the pressure when the pressure exceeds 0.2MPa, keep the pressure not greater than 0.2MPa, and heat up to 83 o C after constant temperature 30min, add 6kg acetic acid (pre-diluted with water of 3 times the quality of acetic acid) and 12-hydroxy fatty acid 6.5kg, heat up to 88 o C~90 o C constant temperature for 1.5h, the material thickens, add 3kg calcium hydroxide (diluted with water 3 times the mass of calcium hydroxide), stir for 10min, add 4kg boric acid (diluted with water 4 times the mass of boric acid, and heat to 95 o C, making it a hot water solution), continue heating at 88 o C~90 o C constant temperature 20min, then warm up to 180 o C constant temperature for 10min, after the constant temperature is over...

Embodiment 3

[0014] Put 240kg of compound calcium sulfonate whose base value is greater than 320KOH / g into the pressure reactor, 240kg of synthetic oil, and heat up to 50 o C, add 24kg of the mixture of conversion agent methanol and ethanol and 14kg of dry ice in the reaction kettle, then cover it, release the pressure when the pressure exceeds 0.2MPa, keep the pressure not more than 0.2MPa, and heat up to 83 o C after constant temperature for 30min, add 10kg acetic acid (diluted with water of 3 times the quality of acetic acid in advance) and 12-hydroxy fatty acid 8.5kg, heat up to 88 oC~90 o C constant temperature for 1.5h, the material thickens, add 5kg calcium hydroxide (diluted with water 3 times the mass of calcium hydroxide), stir for 10min, add 6kg boric acid (diluted with water 4 times the mass of boric acid, and heat to 95 o C, making it a hot water solution), continue heating at 88 o C~90 o C constant temperature 20min, then warm up to 180 o C constant temperature fo...

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Abstract

The invention discloses compound calcium sulfonate base lubricating grease and a preparation method thereof. The key points of the technical scheme of the invention lie in that the compound calcium sulfonate base lubricating grease is prepared by adding calcium sulfonate in an inorganic substance and an organic substance compound calcium soap and thickening base oil, and an arylamine antioxidant is added in a thickening procedure. The high-performance compound calcium sulfonate base lubricating grease is prepared and acquired in a certain raw material ratio and operation condition. By using the compound calcium sulfonate base lubricating grease and the preparation method, the cost of a user is reduced; a product has favorable water resistance, lubricating property and high temperature resistance, cannot be emulsified and degreased, and is not easy to run off; the service life of mechanical equipment is prolonged; the maintenance time of the equipment is decreased; the production efficiency of the equipment is improved; a raw material formula is reasonable; the cost is low; the emission of three wastes does not exist in a production procedure; the compound calcium sulfonate base lubricating grease and the preparation method are environment-friendly while an industrial requirement is met; and the preparation method is a green production process.

Description

technical field [0001] The invention relates to a composite calcium sulfonate-based lubricating grease and a preparation method thereof, in particular to a composite calcium sulfonate-based grease with excellent high-temperature performance and thermal reversibility, which uses a composite calcium soap containing calcium sulfonate salt as a thickening agent. Lubricating grease and method for its preparation. Background technique [0002] High base value complex calcium sulfonate-based grease has excellent extreme pressure, anti-wear performance, water resistance, salt spray resistance, corrosion resistance, high dropping point, good thermal stability at high temperature, etc., and is widely used in High-temperature, heavy-duty and water-rich environments such as automobiles, steel, mines, and papermaking. At present, there are two main processes for preparing complex calcium sulfonate-based grease: one is to introduce CO into the system of mixing neutral calcium sul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06C10N30/08C10N50/10
Inventor 周忠太李建锋王利霞张丹时红敏
Owner XINXIANG HENGXING TECH CO LTD
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