Production device and production method for preparing graphene thin film on glass surface

Abstract

The invention relates to a production device for preparing a graphene thin film on a glass surface. The production device comprises a melting kiln and a storage tank filled with graphene dispersion liquid; the storage tank is connected with a spraying nozzle through a spray coating pipe; the spraying nozzle is arranged in the melting kiln; the melting kiln is connected with a first material supply channel and a second material supply channel; the first material supply channel is connected with a first flow guide channel; the first flow guide channel is connected with a first molding chamber; the first molding chamber is connected with a first annealing kiln; the first annealing kiln is connected with a first cold-end cutting device; the second material supply channel is connected with a second flow guide channel; the second flow guide channel is connected with a second molding chamber; the second molding chamber is connected with a second annealing kiln; the second annealing kiln is connected with a second cold-end cutting device. The production device provided by the invention has the advantages that a one-kiln and two-line method is adopted and common plate glass is produced while graphene thin film glass is produced; the single-layered or few-layered and continuous and uniform graphene thin film can be prepared on the surface of a continuous glass tape in a high-efficiency and low-cost manner; the conductive property and the light-transmission property of the graphene thin film are ensured.

Description

technical field [0001] The invention relates to the technical field of flat glass production, in particular to a production device and a production method for preparing a graphene film on a glass surface. Background technique [0002] Existing flat glass production lines include "one kiln and one line" and "one kiln and multiple lines". The molten glass is supplied to a variety of forming equipment at the same time, and different types of flat glass are produced at the same time, such as: simultaneous production of float glass and float glass, simultaneous production of float glass, flat drawn glass, and rolled glass, flat drawn glass and rolled glass Simultaneous production of glass, etc. [0003] The production of coated glass on the existing flat glass production line mainly adopts the method of chemical vapor deposition or thermal spraying, that is, a coating area is set on the tin bath or annealing kiln of the float line or flat drawing line, and the coating material i...

AI Technical Summary

Problems solved by technology

Studies have shown that growing graphene films directly on the glass surface requires higher temperatures, longer time, harsher environments, and more expensive equipment. The current methods and equipment cannot meet the requirements of online production

[0004] At present, the method of preparing graphene film on the glass surface mainly adopts the method of liquid phase coating, that is, using reduced graphene oxide or liquid phase exfoliated graphene as raw material, and coating a layer of graphene film on the surface of the cut single glass plate. Although the method is simple to operate, it has the following disadvantages: although the reduced graphene oxide is easy to prepare and the cost is low, the structural damage caused by the oxidation process cannot be completely restored, so that the performance of the film is greatly reduced, and it is difficult to prepare a high-quality graphene film; Phase-exfoliated graphene is a kind of high-quality graphene, which can obtain a single-layer or few-layer structure with few defects. It has unique advantages such as large-scale preparation, wide range of raw materials, simple process and equipment, low cost, and easy functionalization. However, when using the liquid phase method to coat the film, it is difficult to control the continuity, uniformity and quality of the film. The reasons are: the concentration of the graphene dispersion is very low, the size of the graphene sheet is too small, and when the coating is too thin, the glass The distribution of graphene sheets on the surface is uneven and discontinuous. Although the light transmission is good, the electrical conductivity is poor; , but the light transmission performance is very poor; the dispersant in the graphene dispersion is difficult to remove, and the organic solvent with a high boiling point is difficult to volatilize, which also makes it difficult to apply liquid-phase exfoliated graphene under normal temperature coating conditions; in addition, because it is in a single Operation on a single glass plate has the problems of low efficiency and high cost

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