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Carbon is one of the most common natural elements, carbon compounds bond and structure is extremely rich, expanded graphite is a kind of new carbon material. In early 1860s, Brodie natural graphite with sulfuric acid and nitric acid and other chemical reagents were found after heating, expanded graphite, but its application in only after death the beginning. Since then, many countries have launched the expansion of research and development of graphite, made a major scientific breakthrough. Expanded graphite is a kind of porous material like prepared from natural flake graphite, so called graphite. Natural flake graphite is a layered crystal, each layer of carbon atoms. With a strong covalent bond formed macromolecular reticular plane, and between the layers with weak…
The wear resistant graphite sealing ring has the following obvious advantages: The graphite seal ring no radiation no pollution. The flexible graphite does not contain harmful ingredients to the human body, but asbestos products has the radiation hazards, and it will pollute the environment. The graphite sealing ring has heat resistance property. The flexible graphite strengthened composite gasket can enhance high temperature of 1650 DEG C, even if the chemical equipment melted, it is still safe and sound. But the crystallization water inside the asbestos products will be broken down at 500 degrees and it will be efflorescence powder and loss of efficacy. The graphite sealing ring for a wide range of application. The flexible graphite sealing ring in addition…
In the global energy crisis and environmental pollution under the background of governments on the development and utilization of key technology and energy related very seriously, new energy countries vigorously develop clean and renewable energy to reduce the traditional. To develop new energy resources, energy storage is the key. With the application of new energy sources such as solar energy and wind energy, the research of new energy storage technology with high efficiency, long life and low cost is especially important. The graphite felt electrode was modified by the method of constant current step activation, and the high performance carbon electrode material was prepared. As the graphite felt has the advantages of high surface area, good chemical stability, low price,…
