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A kind of carbon microsphere copper-silver alloy, modified lubricating grease, preparation method and application

A technology of copper-silver alloy and carbon microspheres, which is applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of reduced surface roughness and increased friction coefficient of materials, and achieves reduced friction, high strength and hardness, green and pollution-free The Effect of Atom Utilization

Active Publication Date: 2021-03-23
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term wear accumulation leads to a decrease in the surface roughness of the material, and a sharp increase in the friction coefficient until failure

Method used

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  • A kind of carbon microsphere copper-silver alloy, modified lubricating grease, preparation method and application
  • A kind of carbon microsphere copper-silver alloy, modified lubricating grease, preparation method and application
  • A kind of carbon microsphere copper-silver alloy, modified lubricating grease, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Add copper nitrate, silver nitrate and glucose into distilled water according to the molar ratio of 2.83:1:17.6, and mix well to obtain mixed solution 1;

[0055] (2) Add L-ascorbic acid solution to the mixed solution 1 prepared in step (1), and mix evenly to obtain a mixed solution 2, wherein the molar ratio of copper nitrate to L-ascorbic acid is 2.83:12.6, and glucose in the mixed solution 2 The concentration is 0.5mol / L; the mixed solution 2 is poured into a stainless steel autoclave lined with polytetrafluoroethylene, and subjected to a hydrothermal reaction at 180°C for 6 hours; after the reaction, it is cooled naturally, and then washed with deionized water and ethanol respectively, 80 ℃ vacuum drying for 6h to obtain carbon microsphere copper-silver alloy ( figure 1 );

[0056] (3) Add part of the base oil (2 / 3 of the total mass of the base oil) and lithium lauryl stearate soap into the reaction kettle, stir and heat up until the base oil and lithium lauryl...

Embodiment 2

[0060] (1) Add copper nitrate, silver nitrate and glucose into distilled water according to the molar ratio of 2.83:1:17.6, and mix well to obtain mixed solution 1;

[0061] (2) Add L-ascorbic acid solution to the mixed solution 1 prepared in step (1), and mix evenly to obtain a mixed solution 2, wherein the molar ratio of copper nitrate to L-ascorbic acid is 2.83:12.6, and the glucose in the mixed solution 2 The concentration of the mixture is 0.5mol / L; pour the mixed solution 2 into a stainless steel autoclave lined with polytetrafluoroethylene, and conduct a hydrothermal reaction at 180°C for 7 hours; after the reaction, cool it naturally, and then wash it with deionized water and ethanol respectively, and wash it with deionized water and ethanol for 80 ℃ vacuum drying for 6 hours to obtain carbon microsphere copper-silver alloy;

[0062] (3) Add part of the base oil (2 / 3 of the total mass of base oil) and lithium lauryl stearate soap into the reaction kettle, stir and heat...

Embodiment 3

[0066] (1) Add copper nitrate, silver nitrate and glucose into distilled water according to the molar ratio of 2.83:1:17.6, and mix well to obtain mixed solution 1;

[0067] (2) Add L-ascorbic acid solution to the mixed solution 1 prepared in step (1), and mix evenly to obtain a mixed solution 2, wherein the molar ratio of copper nitrate to L-ascorbic acid is 2.83:12.6, and the glucose in the mixed solution 2 The concentration of the mixture is 0.5mol / L; the mixed solution 2 is poured into a stainless steel autoclave lined with polytetrafluoroethylene, and subjected to a hydrothermal reaction at 180°C for 8 hours; after the reaction, it is naturally cooled, and then washed with deionized water and ethanol respectively, 80 ℃ vacuum drying for 6h; obtain carbon microsphere copper-silver alloy;

[0068] (3) Add part of the base oil (2 / 3 of the total mass of the base oil) and lithium lauryl stearate soap into the reaction kettle, stir and heat up until the base oil and lithium lau...

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Abstract

The invention belongs to the technical field of preparation of lubricating grease and in particular relates to a carbon microsphere copper-silver alloy, modified lubricating grease, a preparation method and application. Glucose is used as a carbon source and is subjected to hydrothermal synthesis to reduce copper and silver in situ, so as to prepare the copper-silver alloy; the copper-silver alloyis used as an additive and is attached to a carbon microsphere to obtain the carbon microsphere copper-silver alloy; the carbon microsphere copper-silver alloy is used as an additive to prepare lithium-based lubricating grease, so that novel modified lithium-based lubricating grease is obtained; the modified lithium-based lubricating grease contains microsphere-shaped structures including the carbon microsphere, metal nanoparticles and the like, and has an excellent self-lubricating property and an ultralow friction property; the lubrication performance of a system can be improved and the anti-wear and friction reduction performance of the modified lubricating grease is more excellent, so that the service life of a part is prolonged. Compared with existing lithium-based lubricating grease, the modified lubricating grease has the advantages that the anti-wear performance and the friction reduction performance are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease preparation, and in particular relates to a carbon microsphere copper-silver alloy, a modified lubricating grease, a preparation method and an application. Background technique [0002] Bearings are the basic components of large-scale equipment, reflecting the country's manufacturing capacity and manufacturing level, and are an important basic guarantee for major equipment. In addition to factors such as reasonable design, high-performance materials and high-precision processing, manufacturing and installation, the quality of bearings also plays a vital role in the lubricant used. [0003] Greases are thick, greasy semi-solids. It is often used in the friction part of machinery to lubricate and seal. The lubrication failure of the material is mainly caused by excessive wear, high temperature accumulation and other factors. Long-term wear accumulation leads to a decrease in the surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10M125/04C10M169/06C10M177/00C10N50/10C10N40/02C10N30/06
CPCC10M125/02C10M125/04C10M169/06C10M177/00C10M2201/041C10M2201/05C10M2207/1285C10N2030/06C10N2040/02C10N2050/10C10N2030/56C10N2020/06C10N2010/02
Inventor 潘炳力刘金凤张飒孔旭光华蕾谭金龙李锐刘红宇刘继纯
Owner HENAN UNIV OF SCI & TECH
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