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Modified composite calcium sulfonate lubricating grease composition and preparation method thereof

A compound calcium sulfonate lubricating grease and the technology of synthesizing calcium sulfonate, applied in the field of lubricating grease, can solve the problems of unfinished amorphous calcium carbonate, etc., achieve good high-temperature anti-oxidation life, excellent extreme pressure and anti-wear performance, extreme pressure resistance grinding excellent effect

Inactive Publication Date: 2019-01-25
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Example 4 of this patent, the preparation method of conventional composite calcium sulfonate was used to prepare high-basic value calcium salicylate grease, but it was unsuccessful, and the transformation of amorphous calcium carbonate to calcite was not completed.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The formula components and percentages of compound calcium sulfonate grease: 51% high base value synthetic calcium sulfonate, 8.5% high base value calcium salicylate, conversion agent (acetic acid, isopropanol, water mass ratio of 1 :2:4) 4%, calcium hydroxide 1%, compounding agent (mass ratio of boric acid and lauryl hydroxystearic acid is 1:1) 4%, octylbutyl diphenylamine 0.5%, 31% base oil.

[0032] Put the mixture of high base value synthetic calcium sulfonate, high base value calcium salicylate, part of the base oil (30% of the total base oil) and conversion agent into the reaction kettle, stir and heat to 70 ° C, keep the temperature for 90 minutes, and complete Calcium carbonate crystal form transformation, heating up to 95°C, adding calcium hydroxide and compounding agent for compounding, saponification and constant temperature reaction for 60 minutes; after saponification, heating up to 190°C, lowering to 80°C, adding antioxidant octylbutyldiphenylamine, Stir a...

Embodiment 2

[0034] The formula components and percentages of compound calcium sulfonate grease: 24% high base value synthetic calcium sulfonate, 8% high base value calcium salicylate, conversion agent (acetic acid, isopropanol, water mass ratio of 1 :2:4) 3%, calcium hydroxide 2%, compounding agent (mass ratio of boric acid and lauryl hydroxystearic acid is 1:2) 8%, octylbutyl diphenylamine 0.75%, 54.25% base oil.

[0035] Put the mixture of high base value synthetic calcium sulfonate, high base value calcium salicylate, part of the base oil (40% of the total base oil) and conversion agent into the reaction kettle, stir and heat to 85 ° C, keep the temperature for 60 minutes, and complete Calcium carbonate crystal form conversion, heating up to 90°C, adding calcium hydroxide and compounding agent for compounding, saponification and constant temperature reaction for 80 minutes; after saponification, heating up to 180°C, lowering to 90°C, adding antioxidant octylbutyldiphenylamine, Stir and...

Embodiment 3

[0037] The formula components and percentages of compound calcium sulfonate grease: 36% high base value synthetic calcium sulfonate, 9% high base value calcium salicylate, conversion agent (acetic acid, isopropanol, water mass ratio of 1 :2:4) 3.5%, calcium hydroxide 1.5%, compounding agent (mass ratio of boric acid and lauryl hydroxystearic acid is 1:2) 6%, octylbutyl diphenylamine 0.5%, 43.5% base oil.

[0038] Put the mixture of high base value synthetic calcium sulfonate, high base value calcium salicylate, part of the base oil (45% of the total base oil) and conversion agent into the reaction kettle, stir and heat to 80 ° C, keep the temperature for 80 minutes, and complete Calcium carbonate crystal form transformation, heating up to 90°C, adding calcium hydroxide and compounding agent for compounding, saponification and constant temperature reaction for 90 minutes; after saponification, heating up to 200°C, lowering to 100°C, adding antioxidant octylbutyl diphenylamine, ...

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Abstract

The invention relates to a modified composite calcium sulfonate lubricating grease composition and a preparation method thereof, wherein the modified composite calcium sulfonate lubricating grease composition comprises, by weight, 24-51% of high base value synthetic calcium sulfonate, 8-16% of high base value calcium salicylate, 31-54.25% of base oil, 3-4% of a conversion agent, 1-2% of calcium hydroxide, 4-8% of a compounding agent, and 0.5-1% of an antioxidant. According to the present invention, the modified composite calcium sulfonate lubricating grease has advantages of good high temperature anti-oxidation life, good bearing life, good extreme pressure anti-wear performance and excellent comprehensive performance, breaks through the performance defects of short high-temperature (210 DEG C) oxidation induction period, not outstanding 160 DEG C vehicle wheel hub bearing service life and the like of the traditional composite calcium sulfonate, and can be used in bearings with requirements on high temperature and long service life.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a composition and a preparation method of a modified composite calcium sulfonate lubricating grease. Background technique [0002] Composite calcium sulfonate grease has good comprehensive properties such as temperature resistance, extreme pressure and wear resistance, and shear stability. It is widely used in various harsh working conditions such as dusty, watery, and high loads. . The modification of complex calcium sulfonate grease has been extensively and deeply studied at home and abroad. [0003] Patent Publication No. CN102199470B provides antirust storage grease and its preparation method. The storage grease is mainly prepared by adding boric acid, refined dimer acid and 12 hydroxystearic acid in combination. [0004] The patent No. CN 1414076 provides a compound calcium sulfonate grease and its preparation method, which includes 20-60% calcium sulfonate with...

Claims

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Application Information

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IPC IPC(8): C10M141/08C10M169/00C10M177/00C10N50/10C10N30/06C10N30/08C10N30/10C10N40/02
CPCC10M141/08C10M169/00C10M177/00C10M2201/087C10M2207/128C10M2207/1446C10M2215/064C10M2219/0466C10N2010/04C10N2030/06C10N2030/08C10N2030/10C10N2040/02C10N2050/10
Inventor 李纪委李海争赵伟吴宝杰
Owner CHINA PETROLEUM & CHEM CORP
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