Nanometer copper/graphene composite material and preparation method and application thereof

A technology of nano-composite materials and composite materials, which is applied in the field of nano-copper/graphene composite materials and its preparation, which can solve the problems of difficult load control, poor dispersion performance, and small nanoparticles, and achieve short process time and excellent lubricating performance , the effect of small particle size

Inactive Publication Date: 2015-04-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing general conventional technical methods have defects such as poor dispersion performance, low deposition rate, and difficulty in controlling the loading capacity, and it is difficult to prepare graphite with a single phase, controllable loading capacity, small nanoparticles and uniform distribution on the surface of graphene nanosheets. Alkenyl Nanocomposites

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  • Nanometer copper/graphene composite material and preparation method and application thereof
  • Nanometer copper/graphene composite material and preparation method and application thereof
  • Nanometer copper/graphene composite material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of nano copper / graphene composite material, its preparation method is as follows:

[0043] (1) At 30°C, add 33mg of copper chloride dihydrate, 5mg of sodium dodecyl sulfate (SDS), and 6mg of sodium citrate into 50ml of absolute ethanol, and stir ultrasonically for 30min to form a uniform solution; then add 100mg of Graphene, ultrasonically dispersed for 1 hour, to obtain a uniformly dispersed mixed solution;

[0044](2) Add 120mg of dimethylaminoborane (DMAB) to the above mixture, stir gently for 1min, then quickly transfer to a 100ml stainless steel reaction kettle, pump in CO 2 Gas, pressurized to 12MPa, heated to 80°C to make CO 2 reaching a supercritical state;

[0045] (3) Stir and react the mixed solution in the reaction kettle in step (2) for 1 hour, then cool to room temperature, release the pressure and exhaust, centrifuge, wash the product with ethanol and deionized water, and dry it in vacuum at 45°C to obtain The nano copper / graphene composite mate...

Embodiment 2

[0047] A kind of nano copper / graphene composite material, its preparation method is as follows:

[0048] (1) At 30°C, add 100mg of copper chloride dihydrate, 5mg of sodium dodecyl sulfate (SDS), and 6mg of sodium citrate into 50ml of absolute ethanol, and stir ultrasonically for 30 minutes to form a uniform solution; then add 100mg of oxidized Graphene, ultrasonically dispersed for 1.5 hours to obtain a uniformly dispersed mixed solution;

[0049] (2) Add 120mg of dimethylaminoborane (DMAB) to the above mixture, stir gently for 1min, then quickly transfer to a 100ml stainless steel reaction kettle, pump in CO 2 Gas, pressurized to 12MPa, heated to 80°C to make CO 2 reaching a supercritical state;

[0050] (3) Stir and react the mixed solution in the reaction kettle in step (2) for 1 hour, then cool to room temperature, release the pressure and exhaust, centrifuge, wash the product with ethanol and deionized water, and dry it in vacuum at 45°C to obtain The nano copper / graph...

Embodiment 3

[0052] A kind of nano copper / graphene composite material, its preparation method is as follows:

[0053] (1) At 30°C, add 300mg of copper chloride dihydrate, 5mg of sodium dodecyl sulfate (SDS), and 6mg of sodium citrate into 50ml of absolute ethanol, and stir ultrasonically for 30min to form a uniform solution; then add 100mg of Graphene, ultrasonically dispersed for 2 hours, to obtain a uniformly dispersed mixed solution;

[0054] (2) Add 120mg of dimethylaminoborane (DMAB) to the above mixture, stir gently for 1min, then quickly transfer to a 100ml stainless steel reaction kettle, pump in CO 2 Gas, pressurized to 12MPa, heated to 80°C to make CO 2 reaching a supercritical state;

[0055] (3) Stir and react the mixed solution in the reaction kettle in step (2) for 1 hour, then cool to room temperature, release the pressure and exhaust, centrifuge, wash the product with ethanol and deionized water, and dry it in vacuum at 45°C to obtain The nano copper / graphene composite m...

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Abstract

The invention belongs to the technical field of new material preparation and lubricating oil additives, and discloses a nanometer copper / graphene composite material and a preparation method and application thereof. The preparation method comprises the following steps of: firstly dissolving a copper precursor compound, a surface active agent and a complexing agent into reducing alcohol, then adding graphene oxide, and carrying out ultrasonic dispersion to obtain a mixed solution; then adding a reducing agent to the mixed solution, transferring into a reaction kettle, introducing CO2 gas, and controlling gas pressure and temperature so that CO2 achieves a supercritical state; stirring the mixed solution inside the reaction kettle for reacting, cooling, decompressing, washing by centrifuging, and carrying out vacuum drying to obtain the nanometer copper / graphene composite material. The preparation method disclosed by the invention is simple, saved in time and fast. The prepared nanometer copper / graphene composite material has the characteristics of single phase, controllability in loading capacity, small nanometer copper particle size, uniformity in nanometer copper distribution on the surface of a graphene nanometer layer, and the like, has a synergetic lubricating effect, and can be used for outstandingly improving the antifriction and abrasion-resistant property of basic lubricating oil.

Description

technical field [0001] The invention belongs to the technical field of new material preparation and lubricating oil additives, and in particular relates to a nanometer copper / graphene composite material and its preparation method and application. Background technique [0002] Copper is widely distributed in nature and has abundant reserves. Metal copper has good ductility, electrical conductivity, thermal conductivity and other properties, making it widely used in various fields. Nano-copper also has excellent friction properties. Many related literature reports have shown that nano-copper can improve the anti-friction and anti-wear properties of base oil whether it is used as a lubricating oil additive alone or in combination with other materials. It can be seen that nano-copper has a good application prospect in the field of lubrication. [0003] Since its discovery by British scientists in 2004, graphene has been a hot topic of scientific and technological research. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/04C10N30/06
Inventor 苏峰华孟元陈杨枝
Owner SOUTH CHINA UNIV OF TECH
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