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12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition and preparation method thereof

A kind of grease composition, hydroxystearic acid technology, applied in the direction of lubricating composition, petroleum industry, thickener, etc., can solve problems such as affecting the life of grease

Inactive Publication Date: 2018-12-14
汪健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in the prior art, the dropping point of the lithium complex grease is less than 200°C, which seriously affects the service life of the grease

Method used

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  • 12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition and preparation method thereof
  • 12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition and preparation method thereof
  • 12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: Preparation of lithium boron hydroxy compound prefabricated soap powder

[0035] Add 12.83 grams of 12-hydroxystearic acid and 2.65 grams of boric acid into the container, add 3.6 grams of lithium hydroxide at 60°C to 90°C for reaction, the reaction time is 0.5 hours to 1.5 hours, and the temperature is raised to 90°C to 95°C ℃ drying to obtain boron hydroxy complex lithium prefabricated soap powder.

Embodiment 2

[0036] Embodiment 2: Preparation of grease composition

[0037] Add 8 grams of boron hydroxy complex lithium prefabricated soap thickener powder prepared in Example 1 to 92 grams of refined mineral oil (kinematic viscosity: 20 centistokes at 50° C.) at 60° C. to 90° C., stir and mix , heat up to 130°C to 140°C for 1.0 hour to 3.0 hours, continue to heat up to 200°C, cool and homogenize. Obtain the lubricating grease with dropping point > 250°C, stencil oil separation (100°C, 30h) 2.1%, micro-cone penetration 78 at 25°C.

Embodiment 3

[0038] Embodiment 3: preparation lubricating grease composition

[0039] With 15 grams of boron hydroxy complex lithium prefabricated soap thickener powder prepared in Example 1, add 85 grams of synthetic ester oil (wherein kinematic viscosity: be the lubricating oil of 5 centistokes when 50 ℃) at 60 ℃~90 ℃ 25.5 grams, 3 centistoke lubricating oil (59.5 grams), stir and mix, heat up to 130°C-140°C for 1.0 hour-3.0 hours, continue to heat up to 200°C, cool and homogenize. The lubricating grease with a dropping point of 252°C, a stencil oil separation (100°C, 30h) of 3.8%, and a micro-cone penetration of 69 at 25°C was obtained.

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Abstract

The invention relates to a 12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition and a preparation method thereof. The composition is prepared from a thickening agent comprising (A) 12-oxystearic acid, (B) boric acid and (C) lithium hydroxide, and (D) basic lubricating oil. The invention further relates to a preparation method of the 12-oxystearic acid and boric acid composite lithium prefabricated soap lubricating grease composition. The preparation method comprises the following step: in an acceptable solvent environment, preparing 12-oxystearic acid and boric acid composite lithium prefabricated soap as a thickening agent of the lubricating grease composition, wherein the solvent is an organic solvent such as ethanol or acetone which is harmless to human bodies, or water as well; the lubricating grease composition comprises 5-40% (by weight) of the thickening agent and 60-95% (by weight) of the basic lubricating oil; the basic lubricating oil can be ore oil, synthetic hydrocarbon, PAO, synthetic ester oil, polyether, polysiloxane and the like, and the synthetic ester oil has higher advantages when being compared with those of otherthickening agents.

Description

technical field [0001] The invention relates to a 12-hydroxystearic acid and boric acid complex lithium prefabricated soap grease composition and a preparation method thereof. Specifically, 12-hydroxystearic acid, boric acid complex lithium (hereinafter referred to as boron hydroxy complex lithium) prefabricated soap thickener and grease composition and preparation method, especially for grease products with synthetic ester lubricating oil as base oil, More advantageous, you can get high and low temperature grease products. Background technique [0002] As we all know, boron-hydroxy compound lithium grease is a kind of compound lithium-based grease that uses inorganic acid as compound acid with better performance and is widely used, and has good high temperature resistance, colloid stability and better performance than other Grease for better extreme pressure lubricity. [0003] At present, it is used in complex lithium-based greases in various industries in my country. I...

Claims

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Application Information

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IPC IPC(8): C10M123/02
CPCC10M123/02C10M2201/0876C10M2203/1006C10M2207/1285C10M2207/28C10N2010/02
Inventor 汪健
Owner 汪健
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