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Six classifications of graphite and their applications
Graphite is abundant in my country, and it’s widely distributed. However, many of the small and medium sized minerals are found there. Private small graphite miners have operated in my country, and graphite products are of low added value. After many years of hard work, my country has invested in a large amount of money and technical and scientific personnel. The graphite reserves of my country have been used more efficiently after reorganizing mineral enterprises and improving graphite utilization. Now, my country has developed high purity graphite as well as expanded graphite.
1. High purity graphite
High-purity Graphite (carbon contents >99.99%), is used for pyrotechnics in military industry, refractory material in metallurgical industries, catalysts, additives etc., as well as chemical fertilizer industry.
2. Isostatic Graphite
The graphite used to make isostatic graphite comes from high-purity material. It has a low coefficient of thermal expansion, excellent heat resistance, chemical resistance and good thermal conductivity. In the last fifty years, isostatic graphite has become a world-first product. It has not only achieved great success in civil applications, but also holds a prominent position in cutting-edge national defense. This is a brand new material, which is also eye-catching. It is mainly used for the following aspects.
(1) Heater to heat polysilicon ingots
As a result of the global warming, the awareness among humans to protect the Earth has increased. More and more people now prefer natural energy that does not emit carbon dioxide. In this new trend, solar panels have been hailed as the “darling”. The ingot heater that is used during the manufacturing process must be made out of graphite.
Nuclear fission (high temperature gas-cooled) reactor
In order to meet the requirements of graphite as a moderator for high-temperature reactors that use gas cooling, it must resist radiation stress and radiation creep. Therefore, a modular high temperature gas-cooled unit was developed. Modern ultra-high temperature reactors are characterized by high power density at high temperatures. This puts higher demands on the new generation graphite material: high quality and price, ultra high radiation damage tolerance and product homogenization.
Nuclear fusion reactor.
Graphite’s special properties also play an important role in nuclear fusion. It can greatly reduce the metal particles in the material’s plasma, and therefore plays an important role in improving energy confinement. As the number of nuclear fusion systems increases, graphite material with high mechanical and thermal strength is the preferred wall facing the plasma. It also has a positive discharge pulse effect. Because graphite is low in atomic numbers and has low radiation losses, it can be mixed with plasma to keep it stable.
(4) Electric discharge machining electrode.
In the electrodes for electric discharge machining, graphite electrodes offer many advantages. Although graphite is a good material, it has some drawbacks. For example, dust and wear can occur during cutting.
3. Expandable graphite
Also known as acidified or flaked graphite. It is a compound made from high-quality natural graphite. Expanded Graphite offers many advantages, such as high-temperature resistance, high-pressure resistance, good seal performance, and corrosion resistance for various media. It is a type of advanced seal material. It is mainly applied in the following areas.
The environmental protection field.
Expanded graphite has a lipophilicity that makes it hydrophobic and can remove non-aqueous water solutions. This feature is commonly used to remove oil from the surface. A large amount of oil can be absorbed by this product due to its molecular composition. After oil, the graphite can be agglomerated into blocks and floats on the ocean. It can also be recycled or reused, without causing any secondary pollution. Expanded graphite, in addition to its selective adsorption, has a positive effect on air pollutants, including the adsorption and removal of carbon dioxide.
Sealing Material
Expanded graphite is processed into flexible graphite, which has no cracking, softening, or creeping at high temperature.
4. Graphite fluoride
Graphite fluoride, a high-performance graphite and carbon material, is a research hotspot in the global market. It has a unique and excellent quality. It’s widely used as a functional material.
(1) It is used as a releaser.
Graphite-fluoride has a low surface energy, which makes it a good release agent for metal moulds.
(2) Solid Lubricants
Fluorinated Graphite, with its low interlayer energy and low surface energy as well as good chemical and thermal properties, has outstanding lubricating characteristics and is ideal for harsh conditions like high temperature, pressure, corrosive materials and high load.
(3) Raw materials for batteries
It is difficult to use fluorine in the active material of batteries made from fluorine and lithium because fluorine gas can be poisonous. Fluorinated Graphite is used for its excellent electrochemical properties when mixed with organic electrolytes. This makes it a popular material in the integrated circuit memory of cameras, computers and watches.
5. Colloidal graphite
One of the main features of colloidal graphite is its lubricity. The colloidal film of graphite has an excellent thermal insulation in the vertical direction. It is used widely in turbine propellers and hot steam cylinders. It is used to reduce static electricity in the electronics industry.
6. Graphene
Graphene consists of a hexagonal honeycomb-like lattice made up of hybrid sp2 orbitals and carbon atoms. This is a two dimensional material, with a carbon atom thickness. It is the most durable and hard nanomaterial ever found.
The special arrangement of atoms in its structure has made it widely used.
(1) According to ultra-thin Graphene (single layer graphene almost transparent; its molecules are tightly packed, so that even the smallest of helium atoms can’t pass through), the strength is super strong, and it can be used in ultra-light armors, ultra thin and ultra light aircrafts, etc. .
(2) Its conductive atoms have a much higher speed than electrons that move in metal conductors. It can be made into graphene conductor agent.
The rapid movement electrons of this material, which is conductive, allows for its use in future supercomputers, curved mobiles, and photon sensors.
Researchers discovered that bacteria cells could not grow on graphene but human cells were not affected. Take advantage of it; graphene is great for bandages, packaging food, etc.
Tech Co., Ltd. is a professional manufacturer of graphite with more than 12 years’ experience in research and development for chemical products. You can contact us to send a request for high-quality carbon graphite.
Graphite is abundant in my country, and it’s widely distributed. However, many of the small and medium sized minerals are found there. Private small graphite miners have operated in my country, and graphite products are of low added value. After many years of hard work, my country has invested in a large amount of money and technical and scientific personnel. The graphite reserves of my country have been used more efficiently after reorganizing mineral enterprises and improving graphite utilization. Now, my country has developed high purity graphite as well as expanded graphite.
1. High purity graphite
High-purity Graphite (carbon contents >99.99%), is used for pyrotechnics in military industry, refractory material in metallurgical industries, catalysts, additives etc., as well as chemical fertilizer industry.
2. Isostatic Graphite
The graphite used to make isostatic graphite comes from high-purity material. It has a low coefficient of thermal expansion, excellent heat resistance, chemical resistance and good thermal conductivity. In the last fifty years, isostatic graphite has become a world-first product. It has not only achieved great success in civil applications, but also holds a prominent position in cutting-edge national defense. This is a brand new material, which is also eye-catching. It is mainly used for the following aspects.
(1) Heater to heat polysilicon ingots
As a result of the global warming, the awareness among humans to protect the Earth has increased. More and more people now prefer natural energy that does not emit carbon dioxide. In this new trend, solar panels have been hailed as the “darling”. The ingot heater that is used during the manufacturing process must be made out of graphite.
Nuclear fission (high temperature gas-cooled) reactor
In order to meet the requirements of graphite as a moderator for high-temperature reactors that use gas cooling, it must resist radiation stress and radiation creep. Therefore, a modular high temperature gas-cooled unit was developed. Modern ultra-high temperature reactors are characterized by high power density at high temperatures. This puts higher demands on the new generation graphite material: high quality and price, ultra high radiation damage tolerance and product homogenization.
Nuclear fusion reactor.
Graphite’s special properties also play an important role in nuclear fusion. It can greatly reduce the metal particles in the material’s plasma, and therefore plays an important role in improving energy confinement. As the number of nuclear fusion systems increases, graphite material with high mechanical and thermal strength is the preferred wall facing the plasma. It also has a positive discharge pulse effect. Because graphite is low in atomic numbers and has low radiation losses, it can be mixed with plasma to keep it stable.
(4) Electric discharge machining electrode.
In the electrodes for electric discharge machining, graphite electrodes offer many advantages. Although graphite is a good material, it has some drawbacks. For example, dust and wear can occur during cutting.
3. Expandable graphite
Also known as acidified or flaked graphite. It is a compound made from high-quality natural graphite. Expanded Graphite offers many advantages, such as high-temperature resistance, high-pressure resistance, good seal performance, and corrosion resistance for various media. It is a type of advanced seal material. It is mainly applied in the following areas.
The environmental protection field.
Expanded graphite has a lipophilicity that makes it hydrophobic and can remove non-aqueous water solutions. This feature is commonly used to remove oil from the surface. A large amount of oil can be absorbed by this product due to its molecular composition. After oil, the graphite can be agglomerated into blocks and floats on the ocean. It can also be recycled or reused, without causing any secondary pollution. Expanded graphite, in addition to its selective adsorption, has a positive effect on air pollutants, including the adsorption and removal of carbon dioxide.
Sealing Material
Expanded graphite is processed into flexible graphite, which has no cracking, softening, or creeping at high temperature.
4. Graphite fluoride
Graphite fluoride, a high-performance graphite and carbon material, is a research hotspot in the global market. It has a unique and excellent quality. It’s widely used as a functional material.
(1) It is used as a releaser.
Graphite-fluoride has a low surface energy, which makes it a good release agent for metal moulds.
(2) Solid Lubricants
Fluorinated Graphite, with its low interlayer energy and low surface energy as well as good chemical and thermal properties, has outstanding lubricating characteristics and is ideal for harsh conditions like high temperature, pressure, corrosive materials and high load.
(3) Raw materials for batteries
It is difficult to use fluorine in the active material of batteries made from fluorine and lithium because fluorine gas can be poisonous. Fluorinated Graphite is used for its excellent electrochemical properties when mixed with organic electrolytes. This makes it a popular material in the integrated circuit memory of cameras, computers and watches.
5. Colloidal graphite
One of the main features of colloidal graphite is its lubricity. The colloidal film of graphite has an excellent thermal insulation in the vertical direction. It is used widely in turbine propellers and hot steam cylinders. It is used to reduce static electricity in the electronics industry.
6. Graphene
Graphene consists of a hexagonal honeycomb-like lattice made up of hybrid sp2 orbitals and carbon atoms. This is a two dimensional material, with a carbon atom thickness. It is the most durable and hard nanomaterial ever found.
The special arrangement of atoms in its structure has made it widely used.
(1) According to ultra-thin Graphene (single layer graphene almost transparent; its molecules are tightly packed, so that even the smallest of helium atoms can’t pass through), the strength is super strong, and it can be used in ultra-light armors, ultra thin and ultra light aircrafts, etc. .
(2) Its conductive atoms have a much higher speed than electrons that move in metal conductors. It can be made into graphene conductor agent.
The rapid movement electrons of this material, which is conductive, allows for its use in future supercomputers, curved mobiles, and photon sensors.
Researchers discovered that bacteria cells could not grow on graphene but human cells were not affected. Take advantage of it; graphene is great for bandages, packaging food, etc.
Tech Co., Ltd. is a professional manufacturer of graphite with more than 12 years’ experience in research and development for chemical products. You can contact us to send a request for high-quality carbon graphite.