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Modified composite calcium sulfonate based lubricating grease composition and preparation method

A technology of composite calcium sulfonate-based lubricating grease and grease composition, which is applied in the field of lubricating grease, can solve problems such as unsatisfactory effects, and achieve the effects of improving high-temperature oxidation resistance, reducing surface hardening, and enhancing safety

Inactive Publication Date: 2017-03-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent No. CN 101921647 provides adding a surfactant to the grease to improve surface hardening, but the effect is not satisfactory
The patent number is CN 105368542, which provides diatomaceous earth as a modifier in the grease to disperse the complex calcium sulfonate uniformly so as to improve the surface hardening problem. None of the above patents use the type of conversion agent to improve the complex calcium sulfonate-based grease Structural stability improves the mechanical stability of greases

Method used

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  • Modified composite calcium sulfonate based lubricating grease composition and preparation method
  • Modified composite calcium sulfonate based lubricating grease composition and preparation method
  • Modified composite calcium sulfonate based lubricating grease composition and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 20% total base number 420mgKOH / g high base value synthetic calcium sulfonate and 20% 150BS and 20% water accounted for grease total weight into the laboratory small test atmospheric pressure kettle, mix, stir After heating to 75-95°C, add 0.1% glacial acetic acid to the total weight of grease. The glacial acetic acid is diluted with 2-3 times water in advance. The weight of water is not included in the total weight. After stirring for three to ten minutes, add the total weight of grease 1% Octanediol, stirring, temperature control at 75-95°C for 1-2 hours, after the end of constant temperature, take a small amount of samples for Fourier transform infrared spectrometer test, when the infrared spectrum shows the characteristics of amorphous calcium carbonate in the raw material Absorption peak 862-865cm-1 peak position disappears, and strong sharp absorption peak appears at 880-885cm-1 peak position, which indicates that calcium carbonate is completely converted from a...

Embodiment 2

[0037]Add 380mgKOH / g synthetic calcium sulfonate with a total base value of 20% of the total weight of the grease into the laboratory saponification kettle, 150BS of the same weight, and 10% of the total weight of the grease to mix, and stir evenly After heating up to 75-95℃, add 0.1% glacial acetic acid to the total weight of the grease. The glacial acetic acid needs to be diluted with 2-3 times of water in advance. The weight of water is not included in the total weight. 2% octane glycol by weight, stirring, and temperature control at 75-95°C for 1-2 hours. After the constant temperature is over, take a small amount of samples for Fourier transform infrared spectrometer testing. When the infrared spectrogram shows that there is amorphous calcium carbonate in the raw material Characteristic absorption peak 862-865cm-1 peak position disappears, and strong sharp absorption peak appears at 880-885cm-1 peak position and then shows that calcium carbonate is converted into calcite c...

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Abstract

The invention relates to a modified composite calcium sulfonate based lubricating grease composition and a preparation method. The composition is prepared from, by weight, 20-50% of high-alkali-value synthesized calcium sulfonate, 45-75% of basic oil, 0.1-2% of conversion agent, 0.1-3% of glacial acetic acid, 1-3% of calcium hydroxide, 0.1-5% of composite acid and 1.0-4.0% of additive, wherein the total weight is 100%. The mechanical stability of a composite calcium sulfonate base is improved and especially a thickness change value of composite calcium sulfonate based lubricating grease in the storage process is decreased by improving the varieties and contents of the conversion agent and the complex additive required in the preparation process and a preparation process of the composition, and accordingly the mechanical stability performance of the composite calcium sulfonate based lubricating grease is improved. In addition, the high-temperature anti-oxidization properties of the composite calcium sulfonate based lubricating grease is improved and can meet the requirement for long service life of the lubricating grease in the using process to the great degree. In addition, the extreme-pressure anti-abrasion and anti-rust properties of the lubricating grease can be improved.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a modified composite calcium sulfonate-based lubricating grease composition and a preparation method. Background technique [0002] Composite calcium sulfonate-based grease is a non-Newtonian calcium sulfonate soap formed by synthetic alkylbenzene sulfonate calcium with a high base value under the action of a conversion accelerator and a conversion agent, and is thickened by complex fatty acid calcium soap and inorganic calcium salt. Thickening agent, grease with excellent properties produced by thickening refined base oil. Composite calcium sulfonate-based grease has excellent mechanical stability, colloidal stability, extreme pressure and anti-wear properties, water resistance and excellent rust resistance, sealing, anti-leakage, anti-sintering, etc. With multiple properties, it is known as one of the most promising greases in the 21st century. It represents the dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N50/10C10N30/10C10N30/08C10N30/06C10N30/12C10N10/04C10N10/12
CPCC10M169/00C10M2201/062C10M2201/087C10M2203/1006C10M2207/022C10M2207/026C10M2207/122C10M2207/144C10M2215/064C10M2215/065C10M2219/0466C10M2223/049C10M2227/09C10N2030/06C10N2030/08C10N2030/10C10N2030/12C10N2030/72C10N2050/10C10N2010/12C10N2010/04
Inventor 储友双赵伟李纪委杨涛涛
Owner CHINA PETROLEUM & CHEM CORP
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