Graphene lubricating oil

A lubricating oil and graphene technology, which is applied in the field of lubricating oil, can solve the problems of poor performance improvement of lubricating oil, easy agglomeration, and delamination of graphene, so as to promote stability, high grafting rate, prevent agglomeration and Precipitation effect

Inactive Publication Date: 2020-09-04
湛江市菱霸润滑油有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Graphene is a two-dimensional carbon atom crystal with a special structure and single-atom thickness, which shows excellent lubricating properties, mechanical properties and thermal properties, making graphene possible to be used in the technical field of lubricating oil additives. In 2009, a large number of studies proved that graphene showed excellent lubricating effect in basic white oil, but the strong π-π bonds between graphene sheets made it easy to agglomerate and delaminate, so graphene in lubricating oil The dispersibility of graphene has always been the key factor limiting the further development of graphene lubricating oil. In order to enable graphene to be stably dispersed in base oil, a more eff

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1:

[0021] Preparation of modified graphene powder:

[0022] Step 1: Add 10 parts of stearic acid and 10 parts of oleic acid to acetone, add 5 parts of graphene powder after stirring for 30 minutes, continue stirring for 1 hour, and then add potassium permanganate to obtain a black homogeneous slurry;

[0023] Step 2: Condense and reflux the slurry prepared in Step 1, and react in a 50°C constant temperature water bath for 3 hours, filter the slurry, and wash with absolute ethanol;

[0024] Step 3: Blend the slurry prepared in Step 2 with 10 parts of bis-octyl diphenylamine, place the blend in a vacuum oven and dry at 80°C for 6 hours, and then pulverize the dried mixture to obtain a modified Graphene powder.

[0025] Modified lubricant preparation:

[0026] Step 1: Add 1.6 parts of molybdenum powder microspheres, 1.6 parts of chromium powder microspheres, 0.8 parts of iron oxide microspheres, 1.6 parts of benzotriazole, 3.2 parts of di-n-butyl phosphite and 2 parts of l...

Example Embodiment

[0029] Example 2:

[0030] Preparation of modified graphene powder:

[0031] Step 1: Add 12 parts of stearic acid and 12 parts of oleic acid to acetone, add 6 parts of graphene powder after stirring for 30 minutes, continue stirring for 1 hour, and then add potassium permanganate to obtain a black homogeneous slurry;

[0032] Step 2: Condense and reflux the slurry prepared in Step 1, and react in a 50°C constant temperature water bath for 3 hours, filter the slurry, and wash with absolute ethanol;

[0033] Step 3: Blend the slurry prepared in step 2 with 12 parts of bis-octyl diphenylamine, place the blend in a vacuum oven and dry at 80°C for 6 hours, and then pulverize the dried mixture to obtain a modified Graphene powder.

[0034] Modified lubricant preparation:

[0035] Step 1: Add 1.7 parts of molybdenum powder microspheres, 1.7 parts of chromium powder microspheres, 0.8 parts of iron oxide microspheres, 1.7 parts of benzotriazole, 3.5 parts of di-n-butyl phosphite and 3 parts of l...

Example Embodiment

[0038] Example 3:

[0039] Preparation of modified graphene powder:

[0040] Step 1: Add 15 parts of stearic acid and 15 parts of oleic acid to acetone, add 8 parts of graphene powder after stirring for 30 minutes, continue stirring for 1 hour, and then add potassium permanganate to obtain a black homogeneous slurry;

[0041] Step 2: Condense and reflux the slurry prepared in Step 1, and react in a 50°C constant temperature water bath for 3 hours, filter the slurry, and wash with absolute ethanol;

[0042] Step 3: Blend the slurry prepared in step 2 with 15 parts of bis-octyl diphenylamine, put the blend in a vacuum oven, dry at 80°C for 6 hours, and then pulverize the dried mixture to obtain a modified Graphene powder.

[0043] Modified lubricant preparation:

[0044] Step 1: Add 1.8 parts of molybdenum powder microspheres, 1.8 parts of chromium powder microspheres, 0.9 parts of iron oxide microspheres, 1.8 parts of benzotriazole, 3.6 parts of di-n-butyl phosphite, and 3 parts of lithi...

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PUM

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Abstract

The invention discloses the technical field of lubricating oil, and relates to graphene lubricating oil. The graphene lubricating oil is prepared from modified graphene powder and modified lubricatingoil, potassium permanganate is intercalated into sheet layers, a large number of capillary pore channel structures are formed, further stripping of the graphene sheet layers is facilitated, more sheet layers are exposed, a large amount of long-chain alkane is grafted on the surface of the sheet layers, and grafting rate is high, therefore, the agglomerated sheet layers are dispersed; due to the addition of dioctyl diphenylamine, the number of functional groups of the graphene sheet layer is further increased, the buoyancy in the graphene lubricating oil is increased, therefore, the technicaleffect of uniform dispersion without precipitation is achieved; dispersible substances contained in the modified lubricating oil enhance the binding capacity of the modified graphene powder and the base oil, polyethylene wax has excellent cold resistance, heat resistance and chemical resistance, the polyethylene wax exists in the modified lubricating oil in a microcrystal form, and the thixotropyof the polyethylene wax is beneficial to storage of the modified lubricating oil.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a graphene lubricating oil. Background technique [0002] Graphene is a two-dimensional carbon atom crystal with a special structure and single-atom thickness, which shows excellent lubricating properties, mechanical properties and thermal properties, making graphene possible to be used in the technical field of lubricating oil additives. In 2009, a large number of studies proved that graphene showed excellent lubricating effect in basic white oil, but the strong π-π bonds between graphene sheets made it easy to agglomerate and delaminate, so graphene in lubricating oil The dispersibility of graphene has always been the key factor limiting the further development of graphene lubricating oil. In order to enable graphene to be stably dispersed in base oil, a more effective method is to functionally modify graphene. The existing functional modification The method includes g...

Claims

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Application Information

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IPC IPC(8): C10M141/06C10M169/04C10N30/04C10N30/06
CPCC10M141/06C10M169/04C10M169/044C10M2201/041C10M2201/05C10M2201/062C10M2201/087C10M2205/022C10M2207/126C10M2215/064C10M2215/223C10M2223/049
Inventor 罗中晨
Owner 湛江市菱霸润滑油有限公司
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