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Acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition and preparation method

A lubricating grease composition and technology of the composition, applied in the field of lubricating grease, can solve the problems of unscaled production and high price of fluorine grease, achieve good acid and alkali resistance, reduce the content of harmful metal ions and heavy metal ions, and resist water effect

Active Publication Date: 2016-01-20
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commercially available corrosion-resistant grease is completely inert fluorine grease, but the price of fluorine grease is extremely expensive, and it has not been produced on a large scale. Therefore, it is necessary to develop a grease that is resistant to acid and alkali corrosion, which is required for lubrication in special working conditions.

Method used

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  • Acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition and preparation method
  • Acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition and preparation method
  • Acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 preparation method is as follows:

[0037] Add the total base number 360-425mgKOH / g high base number synthetic calcium sulfonate and the high viscosity polyalpha olefin oil of the same weight and account for the grease gross weight 10% in the saponification kettle of the laboratory small test. Mix -20% water, stir evenly, heat up to 75-95°C, add 0.1% glacial acetic acid to the total weight of grease, glacial acetic acid needs to be diluted with 2-3 times water in advance, the weight of water is not included in the total weight, stir After three to ten minutes, add 1% n-butanol by the total weight of the grease, stir, and keep the temperature at 75-95°C for 1-2 hours. After the constant temperature is over, take 1-2g samples for Fourier transform infrared spectrometer testing. When the infrared spectrogram shows that the characteristic absorption peak of amorphous calcium carbonate in the raw material 862-865cm-1 peak position disappears, and a strong sharp ...

Embodiment 2

[0038] Embodiment 2 preparation method is as follows:

[0039] Add the total base number 360-425mgKOH / g high base number synthetic calcium sulfonate and the high viscosity polyalpha olefin oil of the same weight and account for the grease gross weight 10% in the saponification kettle of the laboratory small test. Mix -20% water, stir evenly, heat up to 75-95°C, add 0.1% glacial acetic acid to the total weight of grease, glacial acetic acid needs to be diluted with 2-3 times water in advance, the weight of water is not included in the total weight, stir After three to ten minutes, add 2% n-butanol by the total weight of the grease, stir, and keep the temperature at 75-95°C for 1-2 hours. After the constant temperature is over, take 1-2g sample for Fourier transform infrared spectrometer test. When the infrared spectrogram shows that the characteristic absorption peak of amorphous calcium carbonate in the raw material 862-865cm-1 peak position disappears, and a strong sharp abso...

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Abstract

The invention relates to an acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition and a preparation method. The acid-and-alkali-corrosion-resistant environment-friendly lubricating grease composition is prepared from 20%-30% of high alkali synthesis calcium sulfonate, 0.1%-2% of conversion accelerant, 0.1%-3% of glacial acetic acid, 1%-4% of fatty acid, 0.1%-4% of phosphoric acid, 1%-3% of calcium hydroxide, 1.5%-7.5% of additives and high-viscosity synthetic base oil. An acid solution or an alkaline solution with the mass fraction of 10% is added to lubricating grease for conducting performance testing again, and the lubricating grease prepared from high alkali synthesis calcium sulfonate has the better water resistance, corrosion resistance, shearing resistance and extreme pressure antiwear property. Due to the characteristics of the high-viscosity synthetic base oil and a calcium sulfonate thickening agent, no emulsification or thinning phenomenon occurs to the lubricating grease when the lubricating grease is immersed in the acid solution or the alkaline solution, and the good adhesion property is achieved. Due to the fact that a strong ion exchanger, namely, calcium hydroxylapatite is added, calcium ions in molecules can replace heavy metal ions and the like in a water solution, and the good environment-friendly effect is shown.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a composite calcium sulfonate-based lubricating grease composition and a preparation method. Background technique [0002] In the 1980s, RonMuir (U.S.Patent4560489, Dec24, 1985) etc. adopted high alkali value calcium sulfonate solution to convert it from Newtonian body to non-Newtonian body sulfonate calcium soap with thixotropic properties under the effect of conversion agent, and then Combining with fatty acid calcium soap and inorganic calcium salt as a thickener, thickening the base oil to generate lubricating grease with excellent performance, developed a complex calcium sulfonate base grease, reducing soap content and cost, and improving the sulfonate The low-temperature pumpability of calcium sulfonate-based grease, at this time, the birth of complex calcium sulfonate-based grease in the true sense has enabled the large-scale industrial production of complex cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M169/02C10M125/24C10N30/06C10N30/12C10N50/10C10N40/02
Inventor 储友双赵伟李纪委杨涛涛
Owner CHINA PETROLEUM & CHEM CORP
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