What is the difference between the graphite sheet and graphene sheet?
[ Date: 2020-04-13 13:43:45 Author: Popularity: ]
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Thermal conductivity and heat dissipation materials are familiar to everyone, and can be used in daily life. Among them, the most common ones are thermal conductive graphite sheet, thermal conductive silica gel sheet, thermal conductive silicone grease, thermal conductive graphite film, thermal conductive potting glue, and graphene. Too many of these materials have caused confusion to people. The most common confusion is what is the difference between thermal conductive graphite sheets and graphene. Are their performance and use the same?


Introduction of thermal graphite sheet:

Thermal conductive graphite sheet is a brand-new thermal conductive heat dissipation material with a unique grain orientation. The layered structure of the uniformly thermal conductive sheet in both directions can adapt to any surface, shield heat sources and components, and improve the performance of consumer electronics products. The product evenly dissipates heat while also providing thermal isolation in terms of thickness.

The chemical composition of thermal flexible graphite sheet is mainly a single carbon (C) element, which is a natural element mineral. Thin-film polymer compounds can obtain graphitized films under high temperature and high pressure through chemical methods, because the carbon element is non-metallic element, but it has the electrical conductivity and thermal conductivity of metal materials, and it has the same plasticity as organic plastics, and also has special thermal properties, chemical stability, lubrication and can be coated on solid surfaces. ,. Common graphite is formed by stacking layers of planar carbon atoms arranged in a honeycomb order. The interlayer force of graphite is weak, and it is easy to peel off each other to form a thin graphite sheet.


Introduction of graphene:


Graphene is a kind of new material with single lamellar structure composed of carbon atoms. It is a kind of two-dimensional material with only one thickness of carbon atom, which is composed of carbon atom and SP2 hybrid orbital. Until 2004, physicists Andre Heim and Konstantin Novoselov of the University of Manchester in the UK successfully separated graphene from graphite in experiments, which proved that graphene can exist alone.

When the graphite sheets are peeled into a single layer, the single layer with only one carbon atom thickness is graphene, which has been proved to be the thinnest and hardest material found in the world. Another characteristic of graphene is that its conductive electrons can not only move unobstructed in the lattice, but also move very fast, far faster than that of electrons in metal conductors or semiconductors.


Graphene is a single layer of carbon atoms, which can be obtained from graphite. Graphite is natural. It is dug out of the mine. In essence, it is formed by stacking many layers of graphene. They all have heat conduction and heat dissipation performance. There is no difference in the field of application, but they are different in their own structure.


DSN Technology specializes in the production of thermal conductive graphite sheets, thermal silicone pads, thermal silicone grease, thermal conductive potting adhesives, thermal conductive double-sided adhesives, and long-term supply of SAMSUNG, NVIDIA, AIRBUS…

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