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Metal copper nano granules, its preparation method and application

A technology of nano-particles and metal copper, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of restrictions, easy oxidation applications, etc., and achieve high load-carrying capacity and good anti-wear effect

Inactive Publication Date: 2002-06-19
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic nanoparticles have many unique properties, but their application in the field of lubrication is limited due to their non-oil solubility and easy oxidation

Method used

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  • Metal copper nano granules, its preparation method and application
  • Metal copper nano granules, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Get the mixed solvent of 200ml distilled water and ethanol (V 水 :V 乙醇 =1:1), injected into a reactor with a constant temperature jacket, kept the temperature at 50° C., and added 0.01 mole of bis(hexadecyl)dithiophosphate and excess hydrazine hydrate. At this time, the solution is clear and transparent, and the pH of the solution is ≈9-10. Under the vigorous magnetic stirring, the high-purity N 2 After 20 minutes, 0.05 moles of fully dissolved copper acetate Cu(AC) 2 ·H 2 O was added once, the solution turned from clarification to brick red and then to brown and transparent, and brown flocculent precipitates appeared slowly, reacted for 2.0 hours, left to stand and aged overnight, filtered hot, and precipitated with hot water, ethanol, acetone in turn Wash several times to remove inorganic impurities and unreacted phosphorothioate, and vacuum-dry to obtain powder.

[0026] The transmission electron microscope (TEM) analysis of the product shows that its particle si...

Embodiment 2

[0028] Get the mixed solvent of 100ml distilled water and ethanol (V 水 :V 乙醇 =1:1), injected into a reactor with a constant temperature jacket, kept the temperature to 50°C, added a certain amount of hydrazine hydrate to make the pH of the solution ≈9-10, and passed high-purity N 2 After 20 minutes, 0.05 moles of fully dissolved copper acetate Cu(AC) 2 ·H 2 O was added at one time, reacted for 3 hours, left to stand and aged overnight, filtered hot, and the precipitate was washed with hot water, ethanol, and acetone several times in order to remove inorganic impurities, and vacuum-dried to obtain nano-copper powder without organic modifier modification.

[0029] The transmission electron microscope (TEM) analysis of example 1 and example 2 products shows that the particle diameter of unmodified nano-copper is about 40 nanometers (nm), and the particle diameter of phosphorothioate-modified nano-copper is about 6 nanometers (nm).

Embodiment 3

[0031] Get the mixed solvent of 200ml distilled water and ethanol (V 水 :V 乙醇 =1:1), injected into a reactor with a constant temperature jacket, kept the temperature at 50° C., and added 0.01 mole of bis(dodecyl)dithiophosphate and excess hydrazine hydrate. At this time, the solution is clear and transparent, and the pH of the solution is ≈9-10. Under the vigorous magnetic stirring, the high-purity N 2 After 20 minutes, 0.02 moles of fully dissolved copper acetate Cu(AC) 2 ·H 2 O was added once, and the solution quickly turned from clarification to brick red and then to brown and transparent, and brown flocculent precipitates slowly appeared, reacted for 2.5 hours, left to stand and aged overnight, filtered hot, and the precipitate was washed with hot water and ethanol three times in turn , Acetone several times to remove inorganic impurities and unreacted phosphorothioate, vacuum dried to obtain powder.

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Abstract

The present invention discloses a kind of metal copper nano particles compound as multifunctional lubricant additive. Its preparation method includes the following steps: using organic compound containing thiophosphate as modifying agent and making it react with soluble cupric acetate for 2-12 hr. at 50-80 deg.c in the presence of reaction medium hydrated hydrazine so as to obtain the invented product.

Description

[0001] Field [0002] The invention relates to a metal copper nano-particle modified by an organic compound containing thiophosphorus, a preparation method and application thereof. Background technique [0003] Nanomaterials have received extensive attention due to their unique physical and chemical properties. In recent years, the preparation, performance and application of nanoparticles have become a multidisciplinary frontier research field. Inorganic nanoparticles have many unique properties, but their application in the field of lubrication is limited due to their non-oil solubility and easy oxidation. Contents of the invention [0004] The object of the present invention is to provide a new organic compound modified metal copper nano-particle which can have stable dispersion performance in organic medium, lubricating oil and the like. [0005] A further object of the present invention is to provide a method for preparing metallic copper nanoparticles modified with or...

Claims

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Application Information

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IPC IPC(8): B22F1/00C10M125/04
Inventor 刘维民薛群基周静芳张治军
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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