Quick nano-copper particle preparation method

Abstract

The invention belongs to the technical field of materials, and relates to a quick nano-copper particle preparation method. The method includes the following steps: (1) preparing ethanol water; (2) dissolving a reducing agent into the ethanol water to prepare a reducing agent solution; (3) with stirring, dissolving copper salt and a dispersing agent into the ethanol water in the step (1) to prepare a copper salt and dispersing agent solution; (4) heating the reducing agent solution to 25-28 DEG C, and under the conditions of stirring and ultrasonic wave, dropwise adding the copper salt and dispersing agent solution into the reducing agent solution heated to the temperature of 25-28 DEG C; (5) heating to the temperature of 25-28 DEG C, and reacting for 2-4h; (6) filtering and separating solid-phase precipitation, putting the solid-phase precipitation into a centrifuge for centrifugation, and drying and removing moisture in vacuum to obtain nano-copper particles with the surface coated with the dispersing agent. By the method, reaction time is saved, yield is increased, the prepared nano-copper particles can be used as additives to be applied to reusable lubricating oil with antifriction and self-repairing effect.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a method for rapidly preparing nanometer copper particles. Background technique [0002] Friction loss has a great impact on the economy of today's society. In recent years, people are keen on the research of lubricating oil additives, and various anti-extreme pressure agents and anti-wear agents are added to lubricating oil to improve its lubricating performance. . As a nanomaterial, nano-copper particles have quantum size effects, surface effects, macroscopic quantum tunneling effects, and copper's own unique physical and chemical properties. Adding it to lubricants has the effect of extreme pressure resistance and self-repairing metal surfaces, which can improve lubrication performance and Reduce friction loss. [0003] At present, researchers at home and abroad have tried to add inorganic nanoparticles and organic-inorganic composite nanoparticles to lubricating oil, main...

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Problems solved by technology

[0003] At present, researchers at home and abroad have tried to add inorganic nanoparticles and organic-inorganic composite nanoparticles to lubricating oil, mainly including some inorganic simple nanoparticles (metal copper powder, nickel powder, graphite, diamond, etc.), nano boric acid Salts (nano-zinc borate, nano-titanium borate, etc.), nano-oxides and hydroxides (ZrO 2 , SiO 2 , ZnO, TiO 2 、MoO 2 , Fe 2 o 3 , Ni(OH) 2 , Mn(OH) 2 、La(OH) 3 etc.), nanosulfide (MoS 2 、WS 2 , ZnS, etc.) and other compounds (CeF 3 、LaF 3 , CaCO 3 etc.); testing the friction properties of lubricating oils, it is found that they all have good anti-wear and anti-friction properties; and because metal nano-powders are easy to prepare and have good compatibility with friction pair materials, more and more researches on them The deeper it is, the better the application prospects; patents CN 101818364 A, CN 101607313 A, CN 102586800 A, CN 102198513 A all introduce the preparation methods of nano-copper particles, including electrolysis, detonation method, and liquid phase two-step reduction method etc.; then the above-mentioned methods all have the disadvantages of long preparation process, high temperature requirements, uneven particle size distribution, etc.

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