graphite powder – Silver Nanoparticles Antimicrobial,Copper Oxide Nanoparticles,Gold Nanopowder

The features of graphite powder are soft, dark gray; oily feel that can contaminate the paper. In the isolated oxygen conditions, the melting point above 3000 ℃, is one of the most resistant minerals. At room temperature, the chemical properties of graphite powder are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; different high temperature reaction with oxygen to produce carbon dioxide or carbon monoxide. It only oxidizes with fluorine and simple carbon in the halogen. Graphite powder is easier to acid oxidation. Besides, it can also react with many metals to form metal carbide, which can be smelted at high temperature.
Graphite powder is the necessary raw materials for industrial production and application. The application of graphite powder has begun to move to the more high-end, which has launched a variety of applications, such as in electronics, new energy, high-end manufacturing, medical and other fields. LED lamps is the environmental protection and energy saving lamps recent years that LED lights cooling is the need to solve the problem of graphite powder.
LED lamps and lanterns of the poor heat can lead to damage to power, light failure accelerated, shortened life and other issues, LED lighting system performance is always the top priority, metal materials in the application of LED cooling difficult to process, energy consumption, density is too large, conductive, easy to deformation and difficult to recover waste and many other issues, and graphite powder material will not be such a problem, graphite powder plasticity is good, easy processing, and has excellent high temperature, thermal conductivity and other properties. Graphite powder can be processed into the graphite heat sink, the heat emitted by the lamp will be absorbed through the graphite heat sink, and even to the surrounding heat, graphite powder and plastic can also be made into a heat sink, cooling the cooling cup and cooling shell and so on.
There are many cooling performance in the application of LED lights, including LED chip packaging components, LED optical lens, light scattering components, efficient cooling components, light reflection and light diffusion board. Graphite powder of high-end products plays an important role in the solar transparent electrode, thermal materials and touch screen and other fields.

1 superhard material: diamond and cubic boron nitride and diamond and cubic boron nitride as the main component of polycrystalline composite sheet.
2 diamond why not suitable for processing iron-based metal material:
Because diamond can occur chemistry at high temperatures and Fe metal grinding material, diamond carbon and these elements play a role in generating carbides, resulting in sticky knife show and shorten life, processing quality decline, therefore, not suitable for processing diamonds steel, including ordinary steel and various steel toughness. Such materials are generally used cBN tooling.
3 superhard materials in the future major development direction:
Single Crystal Synthesis
(Using different materials, high-temperature high-pressure synthesis of different devices and different techniques, different synthetic single crystal products)
Monocrystalline sorting
(Synthesis of single crystal products, carried out in accordance with different particle shape, particle size, bulk density, impurity content and strength, toughness, heat resistance, and other performance indicators sorting, so that the single crystal is divided into different species)
Surface plating
(After sorting different varieties of a single crystal, the use of chemical plating, electroplating, vacuum plating and other surface plating)
Polycrystalline Manufacturing
(The use of a single crystal diamond or graphite powder and a suitable metal powder and nonmetal powder materials, according to the appropriate formula, using the corresponding process method (high-temperature high-pressure sintering method or direct growth method), manufactured with different shapes, size, performance and polycrystalline purposes)
Thin film growth
(Using low pressure conditions at various vapor deposition growth method for producing a diamond film or a diamond film with special properties and larger size)

Usefulness of superhard materials
(1) Abrasives
Diamond abrasive is mainly used for grinding the following materials, polishing or cutting: carbide, ceramics and refractories, glass, graphite, precious stones, non-ferrous materials and non-metallic materials.
CBN abrasive primarily used for various high-speed steel, bearing steel, cast iron, stainless steel, wear-resistant coating, high-temperature alloys and other hard grind materials grinding and polishing.
(2) tools (including thin film coated tools).
Diamond tools mainly used for various non-metallic materials and non-ferrous materials, turning, milling, boring, drilling and other processes, such as glass, steel, hard plastics, rubber, building materials, carbon fibers, ceramics, refractories, copper, aluminum and composite materials alloys.
CBN tool is mainly used for machining hardened steel, chilled cast iron, stainless steel, high temperature alloys, wear-resistant coating and other materials.
(3) drill.
For geology, petroleum, coal, construction and other exploration and mining.
(4) cutting tools.
Mainly used for cutting stone, building materials, ceramics, refractories, carbon products, semiconductors, precious stones, wood, etc.; also used for road, airport runway, grooving and cutting of building elements.
(5) drawing tool.
The following metal materials for drawing wire and wire rod, tungsten, molybdenum, copper, aluminum, stainless steel, galvanized steel, steel and alloys.
(6) The dressing tool.
Molding trim for ordinary abrasive, plastic, dressing, etc.
(7) other tools.

Tag: graphite powder

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