Why high-purity graphite powder can be used as conductive material?
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Author : Lzh
Update time : 2023-02-04 12:18:49
What is high-purity graphite powder? High-purity graphite powderhas the advantages of high-temperature resistance (3000 ° C), corrosion resistance (insoluble in acid), and lubricity. Graphite powder is one of the important raw materials for the production of pencil lead; It is also the raw material for making refractory materials and coatings; It is also an important carbon material, which is widely used in the metallurgical industry as a deoxidizer for steelmaking and manufacturing artificial diamond and refractory materials; In addition, it is also used as an additive for paint fillers and abrasives. In the chemical industry, it is mainly used to purify metals or alloys and as a protective gas in preparing hydrofluoric acid and other strong corrosive substances.
Thermal Conductivity Theory of High-purity graphite powder The theory of the thermal conductivity of graphite crystals is very complicated. With the help of computers, much progress has been made. However, there are still many problems to be further discussed λ A. For example, the lattice vibration wave is quantized, and the vibration wave is visually called a phonon. The vibration wave is a vector, which can be called a wave vector. The energy and state of the wave vector are functions of crystal reciprocal lattice. A small region can represent the reciprocal lattice of the whole crystal; This area is called the Brillouin zone. As long as we know the energy and state of phonons in this area, we can very well know the situation of phonons in the whole crystal.
Thermal Conductivity and Density of High-Purity Graphite Powder Formula: λ∥=λ 0exp(–bP) Heat treatment temperature Polycrystalline graphite is mostly made from calcined blanks by high-temperature heat treatment. The higher the heat treatment temperature, the more perfect the development of microcrystals, and the greater La, the greater the thermal conductivity. Calcined petroleum needle coke and medium-temperature coal tar pitch are extruded into small rods. After different heat treatments (HTT), the value of La is shown in Table 4. The reciprocal of thermal conductivity/ λ It is also another kind of extruded graphite made of petroleum coke and medium temperature coal tar pitch, with thermal diffusion coefficient α Also called thermal conductivity, α=λ/ρ Cp. It characterizes the ability of materials to tend to the same temperature during heating or cooling; It is a characteristic parameter indicating the speed of temperature change during the process of unstable heat transfer. The higher the thermal conductivity of the material, the greater the speed of temperature propagation in the material, and the smaller the temperature difference in the material, ρ= 1.81g/cm ³, Isotropic fine grain graphite EK – 98.
Price of high-purity graphite powder High-purity graphite powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of high-purity graphite powder. A large amount of large amount will be lower. The price of high-purity graphite powder can be found on our company's official website.
High-purity graphite powder supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including high-purity graphite powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective high-purity graphite powder, you are welcome tocontact us or inquire any time.
