Graphene-carbon graphite composite isostatic pressing material and preparation method thereof

Abstract

The invention relates to a preparation method of a graphene-carbon graphite composite isostatic pressing material, which specifically comprises the following steps: obtaining components meeting index conditions, preparing a precursor A, preparing a precursor B and treating a composite material, and preparing the graphene-carbon graphite composite isostatic pressing material based on the steps. The raw materials are reasonably selected, and the preparation process is scientific; through research and test, the inventor finally determines the components and the proportion of the components, due to the components and the proportion relation of the components, particles with different particle sizes can be tightly stacked, and the volume density, the porosity, the mechanical strength and the thermal expansion coefficient of the material can reach a very good balance; namely, the prepared material is large in volume density, small in porosity, small in thermal expansion coefficient and high in mechanical strength, and the physical and chemical indexes of graphite are excellent.

Description

technical field [0001] The invention relates to the field of new graphite materials, in particular to a graphene-carbon graphite composite isostatic pressing material and a preparation method thereof, in particular to a graphene-carbon graphite with high volume density, high mechanical strength and strong thermal shock resistance Composite isostatic pressing material and its preparation method. Background technique [0002] Carbon graphite is the most widely applicable friction pairing material in the mechanical seal industry. It has good self-lubricating properties, low friction coefficient, good corrosion resistance, good thermal conductivity, low linear expansion coefficient, good pairing performance and temperature resistance. and other excellent features. [0003] Graphene is the thinnest but also the hardest nanomaterial in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is as high as 5300W / m K, which is higher t...

AI Technical Summary

Problems solved by technology

[0004] The various physical and chemical properties of graphene composite materials that have been developed so far cannot meet the technical requirements of high-end products, mainly in the following technical defects such as low volume density and low mechanical strength of composite materials

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