Method for preparing graphene foam material from furfural acetone formaldehyde resin, graphene foam material and application of graphene foam material

Abstract

The invention discloses a method for preparing a graphene foam material from furfural acetone formaldehyde resin. The method includes the steps that curing molding is conducted on furfural acetone formaldehyde resin by adding non-carbon-atom matter which can be easily removed at a high temperature, then high-temperature carbonization and graphitization are conducted in an inert gas environment, and thus the novel super-power graphene foam material with a hexagonal or pentagonal two-dimensional or three-dimensional polyhedral crystal net structure is formed. The obtained material is a carbon foam material with excellent performance, has the prominent properties of low thermal expansivity, high porosity and pore uniformity, good stability, high temperature resistance, corrosion resistance, good oxidation resistance, small density, light weight, processibility and the like, and the advantages of high thermal conductivity, high melting point, large specific heat, good electric conductivity and excellent shielding performance, and is wide in application range and long in service life. Besides, low-cost and large-batch production of the material can be achieved through the preparation method, no pollution is generated in the preparation or use process, and batch application of the graphene foam material is achieved.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a method for preparing a graphene foam material from a furfurone aldehyde resin, and meanwhile, also relates to the graphene foam material obtained by the method and its application. Background technique [0002] Foam materials have a wide range of applications because of their light weight, firmness, shock absorption, low moisture absorption, easy molding, good water resistance, and heat insulation. However, due to the unsolvable white pollution problems caused by plastic foam, In recent years, the research and application of carbon foam materials has become a development direction. In the research of carbon foam materials, the prior art discloses a kind of microspherical carbon foam, which uses high carbon residue resin or mesophase pitch as the precursor, and first makes hollow microspheres with a geometric size of micron to nanometer , and then use an appropriat...

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Problems solved by technology

However, the microspheres in this hollow microsphere carbon foam material have poor mechanical properties, and due to the non-renewability of fossil energy and the generation of toxic gas pollutants such as hydrogen cyanide during the preparation of carbon foam, it is not suitable for industrialization. and applications

In addition, the study found that the furan resin carbon foam material has the advantages of large specific area, high porosity, excellent adsorption, low thermal expansion coefficient, etc., but the preparation process needs to add a large amount of foaming agent to generate foam, resulting in foaming The foam rate is difficult to control and uneven, and the material stability and stability are poor; while the phenolic resin carbon foam material has low carbon content, poor mechanical properties, poor thermal stability, uneven foaming, and some can only be carbonized but not graphitized. , Some carbonized and graphitized carbon content is low, and the residual carbon rate loses weight after being reduced in contact with air, so it can only be used as thermal insulation material, and the application field is limited

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