Method of preparing superfine modified powder by composite grinding and modification

Abstract

A process for preparing modified superfine powder by pulverizing and modifying features airflow pulverizing on fluidized bed while reacting on modifier by chemical bonding and physical adsorption. Said modifier is heated by microwave before reaction. Its advantages are simple process and high effect.

Description

Technical field [0001] The invention relates to the field of powder science and engineering, in particular to the preparation technology of ultrafine powder modification. Background technique [0002] Ultrafine powder and surface modification treatment can improve the chemical reaction activity of the powder to facilitate the synthesis of materials; improve the interface affinity of the powder to facilitate the mechanical properties of the filler material; regulate various cohesive forces on the surface of the powder To facilitate the dispersion application of the powder; to obtain the special physical properties of the powder surface to facilitate the preparation of functional powders. Therefore, ultra-fine powder and surface modification are important means of high-performance material preparation process engineering, and are also an important part of the development of new materials, new processes and new products. [0003] The existing preparation method of superfine modified...

AI Technical Summary

Problems solved by technology

Among them, methods ①②③ and ⑤ adopt the method of "superfine pulverization first, then surface modification"; method ⑥ is to carry out surface modification in the process of preparing ultrafine particles by chemical method, but this method is only applicable to Some materials that can be prepared by precipitation reaction to prepare ultrafine powder, and the exposure of t