With the continuous development of science and technology, people have also developed many new uses for graphite. The demand for graphite is also because graphite is used more, so now graphite is also considered a fast-moving product. For example, it is used on solar cells and semiconductor wafers, as well as on nuclear graphite, electrode graphite, continuous casting of crystalline graphite and abrasive graphite.
Flexible graphite products, also known as expanded graphite, are a new type of graphite product developed in the age. The United States successfully researched flexible graphite sealing materials to solve the problem of leakage of atomic energy valves, and then developed production in Germany, Japan and France. In addition to the properties of natural graphite, this product has special flexibility and elasticity.
Graphite is usually used in electrode graphite. This is the most common one because graphite is a good conductor of electricity, has good thermal shock resistance, and is also an excellent general electrode material for EDM electrode materials. The low-density anisotropic graphite with coarse-grained structure can not meet the requirements of EDM, and the isostatically pressed graphite electrode has a uniform structure, compactness and high processing precision, which can meet the needs of this aspect. Others will use solar crystals and semiconductors, using graphite to make single crystal straight pull furnace thermal field graphite parts polysilicon melting furnace heaters, compound conductor manufacturing heaters, crucibles and other components.
Solar photovoltaic power generation is developing rapidly. The demand for monocrystalline silicon and polycrystalline silicon in the photovoltaic industry is huge. At present, single crystal and polycrystalline silicon products are all facing large-scale and high-end development, and there is a higher demand for isostatic graphite. Namely: larger size, higher strength, higher purity. It can also be used in carbon brushes, mechanical seals, and collector plates of contact wheels. It is extremely important to require processing accuracy while also providing lubricity and high electrical conductivity. Ordinary graphite materials need to be impregnated with resin and metal to improve strength and air tightness, but their use is limited in corrosion resistance and high temperature resistance.
In addition, graphite is a polishing agent and rust inhibitor for glass and paper in the light industry. It is an indispensable raw material for the manufacture of pencils, inks, black lacquers, inks and synthetic diamonds and diamonds. It is a good energy-saving and environmentally friendly material that the United States has used as a car battery. With the development of modern science and technology and industry, the application field of graphite is still expanding, and it has become an important raw material for new composite materials in the high-tech field, and plays an important role in the national economy.