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Method for preparing surface modification oil solubility nanometer copper

A surface modification, oil-soluble technology, applied in the field of preparation of surface-modified oil-soluble nano-copper, can solve the problems of dispersibility, production scale limitation, thermodynamic instability, etc., and achieves low cost, long-term stable existence, particle size uniform effect

Active Publication Date: 2011-01-26
浙江可沛尔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Zhou Jingfang et al. invented a method for preparing surface-modified copper nanoparticles in a water-alcohol mixed system. Although the dispersion of copper nanoparticles has been improved to a certain extent, it still cannot completely solve the problem of high concentration and long-term conditions. dispersion
Wang Xiaobo and others invented a method for preparing copper nanoparticles based on the principle of flotation, which solved the problem of dispersion, but the preparation process was complicated and involved the preparation of copper sol
As we all know, the colloidal system is a thermodynamically unstable system, and its stability is affected by many factors such as concentration, which may lead to unstable process and limited production scale

Method used

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  • Method for preparing surface modification oil solubility nanometer copper
  • Method for preparing surface modification oil solubility nanometer copper
  • Method for preparing surface modification oil solubility nanometer copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 0.91g of CuSn alloy (Sn content 10%, 300 mesh) in 500mL one-necked flask, add 2.73gO under magnetic stirring, the chloroform solution 80mL of O'-dioctyl dithiophosphoric acid, then add with 20mL37% (wt ) 80 mL of hydrochloric acid solution prepared by dissolving HCl in water, and magnetic stirring at room temperature for 24 h. Stop stirring, stand still, filter, the filtrate is divided into two layers, the water layer is clear and transparent, the chloroform layer is reddish brown, and CHCl is separated after reduced pressure filtration. 3 layer, and distilled under reduced pressure to obtain a brown-red viscous liquid, which is O, O'-dioctyl dithiophosphoric acid (C 8 DDP) modified copper nanoparticles, denoted as C 8 DDPCu; its transmission electron microscope image is shown in figure 1 , as can be seen, the obtained product has uniform particle size, and the average particle size is about 20nm. The optical photographs of it dissolved in various organic solvent...

Embodiment 2

[0025] Add 0.91g of CuSn (Sn content 10%, 300 mesh) to a 500mL single-necked flask, add 2.73g of O, O'-dioctyl dithiophosphoric acid in chloroform under magnetic stirring 80mL, then add 1.25mol / L of NaOH 80 mL of the solution was stirred magnetically at 20°C for 24 hours. Stop stirring, filter under reduced pressure to separate CHCl 3 layer, and distilled under reduced pressure to obtain a brown-red viscous liquid, which is O, O'-dioctyl dithiophosphoric acid (C 8 DDP) modified copper nanoparticles, denoted as C 8 DDP-Cu. Its transmission electron microscope image is shown in figure 2 , it can be seen that the particle size of the obtained product is uniform, and the average particle size is about 10nm. The obtained copper nanoparticles were dissolved in liquid paraffin with a mass concentration of 1%, and there was no obvious precipitation after standing for 15 days, and the stability was good.

Embodiment 3

[0027] Add 0.91g of CuSn (Sn content 20%, 300 mesh) in 500mL one-necked flask, add 0.37g O under magnetic stirring, the toluene solution 80mL of O'-dioctylphosphonic acid, then add with 20mL 37% (wt) Dissolve 80 mL of hydrochloric acid solution prepared by dissolving HCl in water, and stir magnetically at 10°C for 6 h. The stirring was stopped, the organic layer was separated by filtration under reduced pressure, and the brown-red viscous liquid was obtained by distillation under reduced pressure, which was copper nanoparticles modified with O, O'-dioctylphosphonic acid. The obtained copper nanoparticles were dissolved in toluene at a concentration of 0.3%, and there was no obvious precipitation after standing for 15 days, and the stability was good.

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Abstract

The invention belongs to the technical field of nanometer materials preparation with a novel function, and especially relates to a method for preparing surface modification oil solubility nanometer copper. The method comprises the following steps: taking copper alloy as raw material; adding organic solvent with modifier, adding acid or alkaline solution which can react with the alloy metal, fullyreacting for 6-24h under the temperature of 0-100 DEG C, separating and purifying to obtain the surface modification oil solubility nanometer copper. The preparation method in the invention has simple process and equipment, easily obtained raw materials in cheap price, low cost, high yield and the like, which is applicable to large-scale industrial production.

Description

(1) Technical field [0001] The invention belongs to the technical field of preparation of novel functional nanometer materials, in particular to a method for preparing surface-modified oil-soluble nanometer copper. (2) Background technology [0002] Copper nanoparticles have a wide range of applications in the fields of catalysis, electronics, coatings, and lubrication. The literature shows that copper nanoparticles are expected to be used in the lubricant industry as a new type of repairing lubricant additive. The premise of using copper nanoparticles as lubricating oil additives is that it has sufficient stability and dispersion in lubricating oil, and its production cost should be low enough. At present, both physical and chemical methods have been reported to prepare copper nanoparticles. Among them, copper nanoparticles prepared by physical methods have a clean surface and are suitable for catalysis, electronics and other industries, but they cannot be dispersed in so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/16
Inventor 张晟卯代闯吕富山吴志申张治军
Owner 浙江可沛尔新材料有限公司
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