▎ 摘　　要

NOVELTY - Preparation of functionalized micro-nano particle reinforcement, involves ball milling micro-nano particle reinforcement and ceramic ball, mixing soluble copper salt and complexing agent aqueous solutions for 20-60 minutes, dripping sodium hydroxide solution to adjust pH to 9-12.5, stirring to obtain solution (A) without precipitation, dissolving 5-15 mg/L stabilizer in distilled water, pouring it into solution (A), stirring, placing obtained solution in a constant temperature water bath at 50-75degrees Celsius, adding the reinforcement under stirring to obtain suspension with a particle loading of 1-10 g/L, adding a reducing agent, reducing the copper ions depositing on the active surface of the micro-nano particles to form a functional copper coating, for 30-50 minutes, adjusting the pH to 9-12.5 by dripping sodium hydroxide solution, leaving the obtained suspension still for 30-60 minutes, filtering, rinsing with distilled water until neutral, drying, and grinding. USE - Low-cost preparation method of functionalized micro-nano particle reinforcement used in preparation of aluminum matrix composite materials (all claimed) used in aerospace vehicle bearing component, automobile components, precise instrument and electronic device package. ADVANTAGE - The method uses ball milling to replace the chemical coarsening of the surface of the reinforcement in the traditional chemical plating process, sensitizing and activating process, avoids the high price and pollution environment of the reagent, the coating process is simple, the cost is low, and can be prepared by the reaction solution and the reaction condition, controlling the thickness of the copper coating. The method improves the dispersibility and the binding property of the substrate, and makes the aluminum-based composite material with high strength and high conductivity.