A continuous microwave expansion device for graphene

Abstract

The invention discloses a graphene continuous microwave puffing device, which relates to the technical field of graphene processing, and comprises a puffing furnace, one end of the puffing furnace is provided with a feeding hopper, the other end of the puffing furnace is connected with a connecting pipe, and the inside of the puffing furnace is provided with a The heat preservation chamber is provided with a heater inside the heat preservation chamber, and the inside of the heat preservation chamber is provided with a first circulation pipe outside the heater, the inside of the feed hopper is provided with an inner bucket, and there is a Preheat chamber. The invention utilizes the high-temperature gas generated when the material is puffed, which not only plays a role of heat preservation for the puffing furnace, but also avoids the problem of heat loss caused by the large temperature difference between the inside and outside of the puffing furnace, and can also recover and utilize the heat of the puffed high-temperature material. The recovered heat is preheated to the material to be expanded, and the double-sided effect makes the processing effect of the graphene material better, and also reduces the waste of heat.

Description

technical field [0001] The invention relates to the technical field of graphene processing, in particular to a graphene continuous microwave expansion device. Background technique [0002] The preparation methods of graphene are mainly divided into physical method and chemical method. The physical method includes mechanical exfoliation method and epitaxial growth method, and the chemical method includes chemical vapor deposition method and redox method. In order to achieve large-scale industrialization of graphene production, currently using The most widely used preparation process is still the oxidation-thermal reduction method. The pre-expansion treatment of graphene oxide in the existing production process mainly includes high-temperature resistance furnace or microwave puffing equipment, but during the microwave puffing treatment of graphene, the heat in the puffing furnace is easy to lose, and it is easy to affect the puffing effect, and graphite When the graphene mate...

AI Technical Summary

Problems solved by technology

The pre-expansion treatment of graphene oxide in the existing production process mainly includes high-temperature resistance furnace or microwave puffing equipment, but during the microwave puffing treatment of graphene, the heat in the puffing furnace is easy to lose, and it is easy to affect the puffing effect, and graphite When the alkene material enters the puffing furnace, its pretreatment is not perfect, which is easy to increase the waste of resources, and in the puffing process, the high-temperature gas generated contains a large amount of graphene dust and harmful substances, which is easy to affect the air environment

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