Graphene supported spherical copper/cuprous oxide/cupric oxide composite material and its preparation method and application

A cuprous oxide and composite material technology, applied in the petroleum industry, lubricating compositions, additives, etc., to achieve the effect of simple preparation method, excellent anti-wear and anti-friction properties, and inhibiting agglomeration

Active Publication Date: 2021-10-22
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficient in-situ preparation of graphene / copper / copper oxide composite additives and their lubricating applications are still technical blanks

Method used

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  • Graphene supported spherical copper/cuprous oxide/cupric oxide composite material and its preparation method and application
  • Graphene supported spherical copper/cuprous oxide/cupric oxide composite material and its preparation method and application
  • Graphene supported spherical copper/cuprous oxide/cupric oxide composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh 500 mg of copper oxide powder into a beaker, add 100 mL of deionized water, and disperse ultrasonically until there is no precipitation at the bottom of the beaker to form a uniform suspension.

[0045] (2) Add the graphene oxide solution to the suspension in step (1), and disperse it ultrasonically for 20 minutes to obtain a mixed suspension, in which the mass ratio of copper oxide to graphene oxide is 0.9:0.1.

[0046] (3) The above-mentioned mixed suspension is irradiated with the pulsed laser beam focused by the mirror and the convex lens, and the mixed suspension is pulsed laser irradiated under stirring, and the stirring speed is 500r min -1 ; The condition of pulsed laser beam irradiation is: pulsed laser energy density is 600mJ pulse -1 cm -2 , the frequency is 10Hz, and the irradiation time is 30min; the graphene oxide and copper oxide are transformed into copper / cuprous oxide / cupric oxide supported on reduced graphene oxide under the photothermal ac...

Embodiment 2

[0049] (1) Weigh 10mg of copper oxide powder into a beaker, add 100mL of deionized water, and ultrasonically disperse until there is no precipitation at the bottom of the beaker to form a uniform suspension.

[0050] (2) Adding the graphene oxide solution into the suspension in step (1), and ultrasonically dispersing for 5 minutes to obtain a mixed suspension, the mass ratio of copper oxide and graphene oxide in the mixed suspension is 0.85:0.15.

[0051] (3) The above-mentioned mixed suspension is irradiated with the focused pulsed laser beam, and the mixed suspension is pulsed laser irradiated under stirring, and the stirring speed is 300r min -1 ; The condition of pulsed laser beam irradiation is: pulsed laser energy density is 300mJpulse -1 cm -2 , the frequency is 1Hz, and the irradiation time is 60min; the graphene oxide and copper oxide are converted into copper / cuprous oxide / cupric oxide supported on reduced graphene oxide under the photothermal action and reduction a...

Embodiment 3

[0053] (1) Weigh 1000mg of copper oxide powder into a beaker, add 100mL of deionized water, and ultrasonically disperse until there is no precipitation at the bottom of the beaker to form a uniform suspension.

[0054] (2) Adding the graphene oxide solution into the suspension in step (1), and ultrasonically dispersing for 30 minutes to obtain a mixed suspension, the mass ratio of copper oxide to graphene oxide in the mixed suspension is 0.95:0.05.

[0055] (3) The above-mentioned mixed suspension is irradiated with the focused pulsed laser beam, and the mixed suspension is pulsed laser irradiated under stirring, and the stirring speed is 2000r min -1 ; The condition of pulsed laser beam irradiation is: pulsed laser energy density is 1000mJ pulse -1 cm -2 , the frequency is 15Hz, and the irradiation time is 5min; the graphene oxide and copper oxide are converted into copper / cuprous oxide / cupric oxide supported on reduced graphene oxide under the photothermal effect and reduct...

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Abstract

The invention discloses a graphene-loaded spherical copper / cuprous oxide / cupric oxide composite material as well as a preparation method and application thereof. The present invention uses copper oxide and graphene oxide as raw materials to make a mixed suspension, and uses laser beams to directly irradiate the mixed suspension, so that the suspended particles can be ablated by high energy instantaneously (on the order of nanoseconds) and rapidly cooled by the solution. In this way, the reduction of graphene oxide, partial reduction of copper oxide and spheroidization of irregular particles can be realized in one step. By adjusting the laser irradiation parameters, the relative content of copper / cuprous oxide / copper oxide can also be adjusted, with low cost and no impurities. The resulting composite exhibits excellent anti-wear and anti-friction properties during the friction process.

Description

technical field [0001] The invention relates to a method for preparing spherical copper / cuprous oxide / cupric oxide loaded on graphene, in particular to a simple and rapid method for realizing reduction of graphene oxide, partial reduction of random copper oxide particles and The spheroidization and the compounding between the two belong to the technical field of micro-nano powder preparation. Background technique [0002] In industrial production, friction and wear is one of the main forms of failure of materials and mechanical equipment. According to statistics, the global energy loss caused by friction and wear accounts for about one-third of the total mechanical energy loss. Facing the rapid development of the world economy and the strong demand for energy saving and emission reduction, the research on anti-wear and anti-friction materials will contribute to the realization of energy saving and emission reduction. Outstanding Contribution. At present, the means to reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/00C10N30/06
CPCC10M125/00C10M2201/041C10M2201/05C10M2201/062
Inventor 罗婷曹丙强许崇海肖光春
Owner QILU UNIV OF TECH
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