The development trend of graphite heat sink
The growth trend of heat dissipation products
The ambient heat generated by energy-consuming electronic parts seriously affects the use and efficiency of the product. How to effectively eliminate and reduce the adverse effects from ambient heat has been one of the focuses of electronic components. With the lightweight and efficient development of electronic products and the future 5G communication will drive the demand. The active heat dissipation cooling industry will grow at a 26.1% annual trend. It is expected that the scale of 2022 will reach 3.6 billion U.S. dollars. The demand is roughly applied to cloud servers, notebook computers, smart phones, Netcom equipment, smart appliances, and automotive Electronics ... etc.
The product classification of graphite heat sink
Heat dissipation products can be divided into active and passive types. Active types include fans and water cooling cycles. Passive types include graphite sheets, grapheme ,metal backplanes, ice nests, thermal interface materials, heat pipes, and soaking plates.
The development trend of graphite heat sink
Traditional heat dissipation materials such as copper and aluminum have been widely used in the field of heat dissipation of electronic parts and products. In recent years, graphite has gradually replaced metal thermally conductive materials, mainly because graphite has a special hexagonal planar network structure, which can quickly and efficiently distribute thermal energy on a two-dimensional plane.
Graphite heat sinks can be divided into natural graphite sheets according to their structure and production methods, Artificial graphite sheet, Nano carbon heat sink, theoretically the thinner the graphite sheet, the higher the thermal conductivity. Natural graphite sheet is the thickest of the three graphite sheets, so the product with the lowest heat dissipation efficiency. Artificial graphite is carbonized and synthesized under extremely high temperature environment. After being made, the thickness of the product can be less than 0.01mm, but the price is more expensive. Recently, there has been a lot of research related to the development of graphite or grapheme on metal thin films to achieve the heat dissipation effect of composite materials.
Thermal conductivity of metal materials and new materials
The advantages and applications of graphite heat sinks
1. High coefficient of thermal conductivity
2. High reliability without contaminating other components
3. Small size, can be used with other heat dissipation modules to achieve higher heat dissipation effect
Remarks：quote from Dah Young Vacuum R & D