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High-performance complex calcium sulfonate grease and preparation method thereof

A compound calcium sulfonate grease, a technology for synthesizing calcium sulfonate, applied in lubricating compositions, petroleum industry and other directions, can solve the problems of incomplete conversion, unstable conversion process, environmental pollution, etc., and achieve good mechanical stability, excellent Extreme pressure and wear resistance, the effect of reducing environmental pollution

Inactive Publication Date: 2010-09-08
李墨菊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A series of patents such as the above use alcohols, ethers, low-molecular acids, etc. as conversion agents. After the conversion, the conversion agents such as alcohols and ethers are directly discharged into the atmosphere, causing environmental pollution, and the conversion is not complete. Therefore, how to reduce the amount of conversion agent used and improve the conversion effect, so as to effectively reduce environmental pollution and improve product performance, has become the focus of attention in this field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific example 1

[0034] High-performance composite calcium sulfonate grease with high viscosity (kinematic viscosity at 40°C is 50-2000mm 2 / s) The complex soap formed by paraffin-based mineral oil, high alkalinity calcium sulfonate (380-420mgKOH / g) and complex calcium soap is a thickening agent, which is made by adding antioxidant, and the proportion of each component is according to the mass The ratio is as follows:

[0035] Base oil, 45%

[0036] Calcium overbase sulfonate, 25%

[0037] Liquid conversion agent (mixture of isopropanol and ethanol), 4%

[0038] CO 2 Flow rate, 5ml / min

[0039] Boric acid, 3%

[0040] 12-Hydroxy fatty acid, 5%

[0041] Calcium hydroxide, 1%

[0042] Phenyl α-naphthylamine dialkyldiphenylamine, 1%

[0043] Mix and stir the base oil, high alkali value calcium sulfonate, and liquid conversion agent and raise the temperature to 65°C, stir at constant temperature for 30 minutes, and then introduce CO 2 60 minutes, after thickening, add 12-hydroxy fatty ac...

specific example 2

[0045] High-performance composite calcium sulfonate grease with high viscosity (kinematic viscosity at 40°C is 50-2000mm 2 / s) The complex soap formed by paraffin-based mineral oil, high alkalinity calcium sulfonate (380-420mgKOH / g) and complex calcium soap is a thickening agent, which is made by adding antioxidant, and the proportion of each component is according to the mass The ratio is as follows:

[0046] Base oil, 35%

[0047] Calcium overbase sulfonate, 15%

[0048] Liquid conversion agent (mixture of isopropanol and ethanol), 4%

[0049] CO 2 Flow rate, 5ml / min

[0050] Boric acid, 2%

[0051] 12-Hydroxystearic acid, 6%

[0052] Calcium hydroxide, 1.5%

[0053] Phenyl α-naphthylamine dialkyldiphenylamine, 1%

[0054] The performance indexes of two specific embodiments are shown in Table 1.

[0055] The performance index of table 1 embodiment sample

[0056] project

[0057] project

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Abstract

The invention discloses high-performance complex calcium sulfonate grease and a preparation method thereof. The complex calcium sulfonate grease comprises the following components: 35 to 80 percent of base oil, 10 to 40 percent of ultrahigh-base-number synthetic calcium sulfonate, 0.5 to 2 percent of antioxidant and 0.5 to 20 percent of transforming agent, wherein the base oil is dicarboxylic acid diester, dioctyl sebacate, dioctyl adipate and the like; the ultrahigh base number of the ultrahigh-base-number synthetic calcium sulfonate is between 380 and 420mgKOH / g; and the synthetic calcium sulfonate comprises the following complex components: 0.5 to 8 percent of C12 to C24 hydroxy fatty acid, 0.5 to 4 percent of boric acid and 0.5 to 2 percent of calcium hydroxide. The complex calcium sulfonate based grease has high-temperature resistance, high mechanical stability and high extreme-pressure abrasion resistance, reduces the using amount of the transforming agent such as alcohol, ether and the like and environmental pollution in the production process, and improves the efficiency of transforming Newtonian high-base-number calcium sulfonate into non-Newtonian high-base-number calcium sulfonate completely, so that the production technology is simpler.

Description

technical field [0001] The present invention relates to a kind of lubricating grease and preparation method thereof, especially relate to a kind of using traditional conversion agent and CO 2 Gas co-preparation method for high-performance complex calcium sulfonate-based grease. Background technique [0002] Composite calcium sulfonate-based grease is one of the few high-performance greases at present. It has high temperature resistance, extreme pressure and wear resistance, shear stability, low temperature pumpability, rust resistance and water resistance. Known as "a new generation of high-efficiency grease", it has a wide range of application prospects in various harsh working conditions such as dusty, watery, and high loads. At present, this grease has been used in many domestic and foreign steel, paper, and Large enterprises in the bearing and other industries. [0003] The complex calcium sulfonate-based grease mainly undergoes three processes. In the first stage, in...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N30/06C10N30/08
Inventor 李墨菊
Owner 李墨菊
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