A kind of graphene rolling peeling method

Abstract

The invention belongs to the technical field of graphene production, and specifically relates to a graphene rolling peeling method. In the rolling system adopted in the method, an extrusion cylinder is arranged in a closed cylinder, and a cam group is installed on the upper cylinder by rotating a rod. On the bottom plate, there is an extrusion roller in the extrusion cylinder, which is installed on the upper bottom plate in rotation; three cam groups cooperate with each other to make the extrusion roller contact with the inner wall of the extrusion cylinder; graphite particles are transported from the feed port to the extrusion cylinder. In the press cylinder, the motor drives the extrusion roller to rotate, and at the same time, the controller uses the motor to make the three cam sets rotate in coordination, so that the inner wall of the extrusion cylinder is in full contact with the extrusion roller, thereby improving the stripping efficiency of graphene; the graphite after stripping Graphene is collected through a filter hole and a discharge port; the present invention is mainly used for preparing graphene, which can fully grind graphene, and meanwhile fine particle graphene meeting the size can be filtered in time; improves the production efficiency of graphene.

Description

technical field [0001] The invention belongs to the technical field of graphene production, in particular to a graphene rolling peeling method. Background technique [0002] Graphene is a sheet-like two-dimensional material in which carbon atoms form a hexagonal honeycomb lattice structure with sp2 hybrid orbitals. This special two-dimensional structure causes graphene to exhibit various special properties, such as high strength, high hardness, high thermal conductivity and electrical conductivity; due to these structural characteristics and performance characteristics, graphene is known as the Layers, transparent bendable electronic components, ultra-large capacitors, etc. are the most promising potential materials. What needs to be added is that, strictly speaking, graphene is a single-layer sheet; however, due to the difficulty of preparing single-layer graphene, oligolayer graphene with similar properties is generally also classified into the category of graphene. Insi...

AI Technical Summary

Problems solved by technology

Among them, conventional grinding refers to grinding graphite in a mortar grinder. The disadvantages are: first, the shear force comes from the friction force caused by pressure, and the excessive pressure makes it difficult for the motor to drive the pestle body to rotate, which limits the shear force. If the pressure is too small, it is difficult to shear and peel off; secondly, the shearing efficiency is low, and increasing the amount of pressed powder will lead to insufficient shearing force of some powders; Applying pressure will cause structural defects in graphene, and even shatter graphene after exfoliation, so that the edge of the obtained product is more burr, and the crystal size is small

The graphene grinding and stripping device can realize large-scale stripping of graphene, but the graphene prepared by this technical scheme has impurities with too large particles, and this technical scheme cannot grind the graphene at the edge of the annular storage tank, resulting in graphite Insufficient grinding of alkenes limits the invention

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