Abstract:

The excellent electrical, optical and mechanical properties of graphene have set off a research boom in various fields, and its preparation method has become the focus of research. Mechanical shear stripping method has attracted much attention because of its low cost, simple operation, and no damage to the intrinsic properties of graphene. This paper introduces the properties and stripping mechanism of graphene, and reviewes the low energy pure shearing method, the three-stick grinding and stripping method and the ball milling method in the mechanical peeling method, and compares their respective characteristics and problems. Since the ball milling method is currently the most promising method for producing graphene on a large scale. the ball milling process is optimized in this paper, and a grinding disc structure ball mill is proposed. The ball mill effectively avoids the impact force between the grinding balls, protects the graphite lattice from being broken, and improves the shearing efficiency.

Key words: graphene, peeling mechanism, shear, mechanical stripping preparation, ball mill equipment, grinding disc grinding