The purpose of surface modification of ultrafine powder is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the added value of the powder. At present, there are many methods for surface modification, and the classification method varies depending on the angle of analysis of the problem. The powder surface modification methods are divided into six categories, namely: surface coating modification, surface chemical modification, mechanical force chemical modification, capsule modification, high energy modification, and precipitation reaction modification. Let us introduce the principle and function of Mechanical chemical modification. Mechanical chemical modification refers to the change of min...
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