1. Basic Concepts

Flexible Graphite Sheet, also known as expanded graphite sheet or flexible graphite foil, is an advanced carbon material made from high-purity natural flake graphite through a series of precision processes such as chemical intercalation, high-temperature expansion, and calendering. It perfectly combines the excellent properties and unique flexibility of graphite, becoming an indispensable key material in modern industry.

2.Advantages of flexible graphite sheet

Excellent thermal conductivity. The thermal conductivity of flexible graphite sheet is very high. It can conduct heat quickly. In the field of heat dissipation of electronic equipment, it can effectively reduce the temperature of key components such as chips. Thereby ensuring the stable operation of the equipment and avoiding performance degradation or failure due to overheating.

Excellent high temperature resistance. It can continue to work in a high temperature environment. It can withstand thousands of degrees of high temperature in an inert atmosphere and is suitable for high temperature furnace insulation, refractory coatings, etc. In addition, it can maintain structural integrity and stable performance under extreme high temperature conditions.

Good chemical stability. It has strong tolerance to strong acids, strong alkalis and most organic solvents. In corrosive industrial environments such as chemical and pharmaceutical industries, it can be used as corrosion-resistant linings, gaskets and other materials. These can effectively prevent chemical media from eroding the equipment.

Excellent flexibility and processability. We can easily cut, bend and fold it into various complex shapes. This facilitates the installation and use of equipment components of different shapes. Such as the sealing of special-shaped pipes and the irregular shape of cooling modules.

Low density. Light weight, which can meet the material performance requirements. (In application scenarios with strict weight restrictions, such as aerospace equipment, portable electronic devices, etc.). It can also reduce overall weight and energy consumption. 

3. Main Applications

Electronics and communications. In smartphones, computers and other electronic devices, flexible graphite sheets are widely used as heat dissipation materials. Attached to the chip, it can also quickly dissipate the heat of batteries and other heat-generating components. This ensures the temperature stability of the equipment under high-performance operation. Its good thermal conductivity and high temperature resistance are also used in equipment such as power amplifiers in communication base stations to ensure the normal operation and service life of the equipment.

Energy industry. In lithium-ion batteries, we can use it as an additive for welding rod materials or coating materials to collect fluids. This can improve the battery charging and discharging performance and cycle life. In fuel cells, we can use it as a sealing and conductive material for bipolar plates to improve the overall performance and stability of fuel cells.

Mechanical manufacturing and automotive industry. In cylinder head gaskets, exhaust pipes, pipes, seals and other parts of automobile engines, we can also use it. Flexible graphite sheets use their high temperature resistance and good sealing properties to prevent gas and liquid leakage. And ensure the efficient operation of the engine. The sealing links of various high-temperature and high-pressure equipment in mechanical manufacturing, such as compressors, pumps and valves, also play a key sealing role. It can reduce equipment maintenance costs and improve operational reliability.

4.summary

Flexible graphite sheet, the "black gold of industry", has become the core material driving the development of high-end fields such as electronics, new energy, and aerospace with its top in-plane thermal conductivity, excellent sealing ability in extreme environments, and excellent flexibility. The continuous iteration of technology is constantly expanding its performance boundaries and application scenarios, and its strategic value is becoming increasingly irreplaceable in modern industry.

If you would like to find out more about Flexible graphite sheet, please contact us at weiten@weitengroup.com, wwww.weitengroup.com.