Flexible Graphite Sheet

The preparation of flexible graphite sheets usually begins with the acidification of natural graphite to remove impurities. And these enable the formation of graphite interlayer compounds. Then, after washing, drying and other steps, use high temperature swelling technology. Under the action of instant high temperature (generally up to 1000℃ or more), the graphite interlayer compounds rapidly decompose to produce gas. Therefore, the graphite along the direction of interlayer expansion forms wormlike expanded graphite. Finally, we make the expanded graphite into flexible graphite sheets with certain thickness and strength by rolling, rolling and other mechanical processing methods.

According to your individual needs, we can make it accurately adapted to any size and shape you need through professional cutting, molding and other fine processing. Whether the sealing needs of small Spaces, or the heat dissipation requirements of irregular heating areas, flexible graphite sheets can be easily dealt with. This provides efficient, reliable and customized material solutions for your industrial production or scientific and technological research and development projects. The ideal choice for your pursuit of superior quality and unique applications.

Advantages of flexible graphite sheets

• Excellent thermal conductivity. The thermal conductivity of the flexible graphite sheet is high. It can quickly conduct heat. And it can effectively reduce the temperature of key components such as chips in the field of electronic equipment heat dissipation. This ensures the stable operation of the equipment, and avoid performance degradation or failure caused by overheating.

• Outstanding high temperature resistance. It can continue to work in a high temperature environment. And it can withstand thousands of degrees of high temperature in an inert atmosphere, suitable for high temperature furnace insulation, refractory coating, etc.. Besides, it  can maintain structural integrity and stable performance under extreme high temperature conditions.

• Good chemical stability. Strong acid, strong alkali and most organic solvents have a strong tolerance. In the chemical, pharmaceutical and other corrosive industrial environment, can be used as a corrosion resistant lining, gasket and other materials. These effectively prevent the erosion of chemical media on equipment.

• Excellent flexibility and processability. We can cut, bend and fold it into a variety of complex shapes easily. This is convenient for installation and use on equipment components of different shapes. Such as the sealing of special-shaped pipes and the irregular shape of the cooling module.

• Low density. Light weight can meet the material performance needs. (In the application scenarios with strict restrictions on weight. Such as aerospace equipment, portable electronic equipment, etc..) And it also can reduce the overall weight, reduce energy consumption.

Main Applications

Electronics and communications. In smart phones, computers and other electronic equipment, flexible graphite sheets are widely used as heat dissipation materials. Attached to chips, batteries and other heating parts, the heat is quickly dissipated. This ensures that the temperature of the equipment is stable under high performance operation. In the equipment such as the power amplifier of the communication base station, its good thermal conductivity and high temperature resistance are also used to ensure the normal operation and life of the equipment.

Energy industry. In lithium-ion batteries, we can use it as an additive to électrode materials or a coating material for fluid collection. This improves 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.

Machinery manufacturing and automotive industry. In the cylinder head gasket, exhaust pipe seals and other parts of the automobile engine, we can also use it. The flexible graphite sheet uses its high temperature resistance and good sealing performance to prevent gas and liquid leakage. And it ensures the efficient operation of the engine. The sealing link of various high temperature and high pressure equipment in mechanical manufacturing, such as compressors, pump valves, etc., also plays a key sealing role. It reduces equipment maintenance costs and improves operation reliability.