2023-12-25

Graphite products

High purity submicron graphite particles have a wide range of applications, including electronic information display tubes, black background conductive coatings in display manufacturing industries, devices composed of liquid crystal displays, photosensitive black coatings used on sensors and color decomposers, ion three primary color boundaries such as colored liquid crystals in flat panel displays, which are used to improve emission efficiency and color contrast, various coatings such as ultra-fine tungsten and molybdenum wire drawing, and lubricant and grease manufacturing industries High purity submicron graphite particles are widely used in foam iron nickel manufacturing industry for high-performance batteries, photographic film and many other industries.High purity graphite ultrafine powder includes colloidal graphite powder, mainly used for pens, powder metallurgy, lubricating oil, lubricating grease, dry batteries, conductive coatings, lubricating coatings, scientific research

2023-11-21

Material characteristics of graphite powder

Graphite powder is a substance that is very sensitive to chemical reactions. In different environments, its resistivity will change, which means its resistance value will change. However, there is one thing that does not change. Graphite powder is one of the good non-metallic conductive substances. As long as the graphite powder is kept uninterrupted in an insulated object, it will also be electrified like a thin wire. However, there is no accurate number for the resistance value, Because the thickness of graphite powder varies, the resistance value of graphite powder will also vary when used in different materials and environments. Due to its special structure, graphite has the following special properties:1) High temperature resistant type: The melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even after being ignited by an ultra-high temperature arc, the weight loss and thermal expansion coefficient are very small. The strength of graphite increases with te

2023-08-17

Graphite anode plate

Graphite anode is a graphite plate, block, or rod used as an anode for electrolytic cells in the electrolysis industry. It has characteristics such as high temperature resistance, good conductivity and thermal conductivity, easy machining, good chemical stability, strong acid and alkali corrosion resistance, and low ash content.There are two types of electrolysis industry using graphite anodes, one is aqueous solution electrolysis, and the other is molten salt electrolysis. In the past, the chlor alkali industry, which used to produce caustic soda and chlorine gas by electrolysis of salt water solutions, was the largest user of graphite anodes. However, the chlor alkali industry now widely uses the ion membrane electrolysis process for alkali production, and the graphite anode diaphragm method for alkali production has gradually been phased out. Therefore, the production of graphite anodes is in an extremely shrinking state. Currently, graphite anodes are only used in industries such

2023-08-14

Which raw materials are selected for the production of traditional carbon materials

Various metallurgical furnace carbon blocks (such as blast furnace carbon blocks, ferroalloy furnace carbon blocks, calcium carbide furnace carbon blocks, and aluminum electrolysis cell cathode carbon blocks, etc.) are used at a certain high temperature. Therefore, carbon blocks should have high mechanical strength, thermal stability, and corrosion resistance, but the ash content requirements are not too strict. Except for the bottom carbon blocks used in aluminum electrolysis cells, it is not necessary to measure conductivity. The production of carbon blocks mostly uses anthracite as the aggregate and metallurgical coke as the filling material. To improve the thermal conductivity and corrosion resistance of carbon blocks, a certain amount of graphite fragments (or natural graphite) can be added. In order to improve the thermal conductivity and conductivity of carbon blocks, semi graphite carbon blocks can be produced by electrocalcining anthracite.The raw materials used for conductiv

2023-08-08

Varieties and uses of carbon rods

Carbon rods are made from carbon or graphite materials as the substrate. Carbon rods can be used as electrodes for arc discharge in various electrical equipment that generate thermal or light energy. During arc discharge, high temperature and strong luminous intensity are generated.Carbon rods can be divided into film projection carbon rods, high color temperature photography carbon rods, ultraviolet linear and sunlight type carbon rods, photographic plate making carbon rods, carbon arc air gouging carbon rods, precision casting carbon rods, electrolytic carbon rods, arc lighting carbon rods, spectral carbon rods, battery carbon rods, and welding carbon rods according to their purposes.Arc lighting carbon rods are used in searchlights, as well as in strong arc lamps for film projection, photography, plate making, and ultraviolet light sources. Carbon arc air gouging carbon rods are used for arc cutting of metal materials, drilling, eliminating casting risers and other defects. Spectra

2023-04-20

Optical and mechanical properties of graphene

Graphene has excellent optical properties, with an absorption rate of about 2.3% over a wide wavelength range, making it almost transparent. Within the thickness range of several layers of graphene, with each increase in thickness, the absorption rate increases by 2.3%. Large area graphene films also have excellent optical properties, and their optical properties change wi

2023-03-22

Let's talk about the basic characteristics of graphite

I. Special seismic resistance: Graphite's expansion gear is different, so the macro expansion coefficient is not large. In the case of sudden changes in temperature, graphite volume has not changed much; coupled with its good thermal conductivity, graphite resistance is excellent.Second, lubrication: The graphite layer is Van Der Waal Forces, which combines weak combination to make it lubricating. The lubrication of graphite depends on the size of the graphite scales. The larger the scales, the smaller the friction coefficient, the better the lubricity.Third, good chemical stability and resistance to erosion: Graphite has good chemical stability at room temperature, not subject to any strong acid, strong alkali and organic solvents; the carbon atom in the graphite layer is firm Combining, the surface of graphite phosphorus can be very low, not moisturizing by melting furnaces, and strong resistance to erosion. However, graphite is prone to oxidation in the air, and anti -oxidation mea

2023-02-09

Graphite chloride roasting method

The chloride roasting method is to mix graphite with a certain reducing agent to bake at high temperature in specific equipment and atmosphere. The price in the material is transformed into a metal chloride with gas or condensed phase. Purified process.

The key role of graphite in battery technology

The problem that graphite boat should pay attention to when maintenance is maintained

1. Prevention of strong corrosion of flame direct -injection engine graphite products side and bottom 砣;2. Use the entire process to turn the graphite boat once a week to improve the use period of graphite products;3. A proper interval should be kept in the middle of the graphite boat and the furnace wall, and graphite products should be put in the middle of the furnace;4. Pull out the coal ash and sticky conditions in the form of the form should be gently patted to prevent damaging graphite products;5. In the transportation conditions, it is necessary to hold it lightly, and it is strictly forbidden to fall;6. Strictly prevent the wet and cold, try to put it as much as possible or on the wooden shelf in the storage condition;7. The model specifications are the capacity of copper;8. Before using the dryer equipment or beside the furnace, it must be baked, and the temperature gradually rises to 500 ° C;9. The use of moderate combustion and additives will reduce the period of use.