Preparation method of graphene concentrated master batch

Abstract

The invention provides a preparation method of a graphene concentrated master batch. The graphene concentrated master batch comprises the following raw materials: natural graphite, concentrated sulfuric acid, concentrated hydrochloric acid, potassium permanganate, sodium nitrate, hydrogen peroxide, ammonia water, hydrazine hydrate and distilled water. The preparation method comprises the following steps: 1, preparing graphite oxide: (1) injecting a proper amount of concentrated sulfuric acid into a reaction bottle, and placing the reaction bottle in ice water at the same time; and (2) injecting a mixture of 4 g of ground natural graphite powder and 2 g of sodium nitrate into a reaction bottle, and then adding 12 g of potassium permanganate. The natural graphite is processed from the raw materials according to the preparation steps, the natural graphite is subjected to impurity removal and purification, the graphene oxide solution with relatively high purity is prepared through a chemical oxidation reduction reaction, and then the graphene oxide solution is subjected to oxidation reduction to prepare the graphene master batch with high purity, so that the preparation process of graphene is simplified, the yield of the graphene is conveniently increased, raw materials are provided for research of the graphene, and the problem that the graphene prepared by a traditional preparation method is low in purity is solved.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a method for preparing a graphene concentrated masterbatch. Background technique [0002] Graphene is a new material in which carbon atoms connected by sp2 hybridization are closely packed into a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical and mechanical properties. It has important application prospects in areas such as biomedicine and drug delivery, and is considered to be a revolutionary material in the future. [0003] Graphene has been widely used in mobile devices, aerospace, new energy batteries and other fields. Graphene still has research significance. Graphene already exists in nature, but it is difficult to peel off the single-layer structure. Research requires the preparation of high-purity graphene. The graphene prepared by the traditional graphene preparation method is low in purity and contains a large amount of impu...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing graphene concentrated masterbatch, which solves the problem of low purity of graphene prepared in the traditional way