Surface modification nanometer copper particle and preparation method thereof

Abstract

The invention relates to a surface modification nanometer copper particle and a preparation method thereof. The preparation method comprises the following steps of: firstly preparing a copper salt water solution with the concentration of 0.05-0.2 mol / L; adding an ammonia water solution; then sufficiently mixing the copper salt water solution and a mixed solution of a reducing agent, a surface modification agent with anti-emulsification property and an organic solvent to react for 1-3 hours under the condition of alkaline (pH is 8-11); and then concentrating and separating to obtain the surface modification nanometer copper particle. The preparation method has the advantages of simple preparation process, easiness for low-cost raw material obtaining, low cost, high yield and suitability for large-scale production and preparation.

Description

technical field

[0001] The invention relates to a production method, in particular to a surface-modified nano-copper particle and a production method thereof. Background technique

[0002] Nanomaterials show unique advantages in the field of tribology because of their special nano-effects and high surface activity. In particular, soft metal nanoparticles such as copper and its alloys have outstanding anti-friction, anti-wear and self-repair functions. As a self-repairing nano-lubricating and anti-wear material for new high-performance lubricating grease additives, it can repair the worn parts of mechanical equipment friction pairs. Self-healing, and has significant anti-wear and energy-saving effects. However, the poor oxidation stability of nano-copper materials, poor dispersion stability and monodispersity in oily media limit their wide application, so the preparation of nano-copper particles with good chemical stability and good dispersibility in oily media and Making i...