2023-06-05

Graphite heat sink

Graphite heat sink is also known as hot graphite sheet, which is a brand new heat -conducting heat dissipation material. It has unique grain direction and evenly conducts heat guidance along two directions. Improve the performance of consumer electronics.Thermal conductivity graphite is a brand new heat -conducting heat dissipation material. It is evenly conducted in two directions to shield the performance of consumer electronics while shielding heat sources and components. The unique combination of thermal conductivity of the graphite heating film solution allows heat -conducting graphite to become an outstanding material option for heat management solutions. The thermal graphite plane has the ultra-high thermal conductivity within the range of 150-1500 W/m-K.The chemical composition of Thermal Flexible Graphite Sheet is mainly a single carbon (C) element. It is a natural element mineral. The film polymer compound can obtain a graphized thin film under high temperature and high pres

2023-12-22

Safety risks of graphite electrodes, high-purity graphite, and graphite anode plates under high-temperature oxidation

2023-10-09

Application of graphite cathode carbon block

Carbon blocks made from high-quality anthracite, coke, graphite, etc. Used as a cathode for aluminum electrolysis cells. It is built at the bottom of the electrolytic cell, also known as the bottom carbon block. The characteristic cathode carbon block plays a dual role in conducting electricity and forming the inner lining of the electrolytic cell. Aluminum electrolysis production requires cathode carbon blocks to have high temperature resistance. The characteristics of resistance to molten salt erosion and conductivity, good thermal conductivity, high mechanical strength, good thermal shock resistance, and strong sodium corrosion resistance are conducive to energy conservation and improved cell life in aluminum electrolysis production.Graphite cathode is a conductive material used for the cathode of aluminum electrolysis cells, representing the development direction of the electrolytic aluminum industry. With the technological progress and development of the electrolytic aluminum ind

2023-03-14

What kind of wonderful use of graphite powder?

Graphite powder is widely used. Resources are carbon products, and the melting points are very high. Graphn powder can withstand high temperatures above 3000 ° C. Therefore, graphite powder has excellent high temperature resistance, and graphite powder resistance high temperature resistance can be widely used in high temperature resistance fields. Graphite powder is widely used in high temperature resistance. Casting is carried out in high temperature environments. In order to prevent the casting from deforming and broken at high temperatures, it is necessary to add graphite powder to the casting. Casting graphite powder can withstand the high temperature generated during the forging process, make the surface of the casting clean, without sticky sand, and ensure the quality of the casting.Graphite powder has unique physical chemical properties with high temperature resistance, corrosion resistance, good toughness, good thermal conductivity, good conductivity, and high carbon content.

2023-04-19

Common ways to expand graphite

1. Chemical intervening method: The prepared initial raw materials are high -carbon scales -shaped graphite. The remaining chemical reagents such as concentrated sulfuric acid (more than 98 %), hydrogen peroxide (more than 28 %), potassium permanganate, and other industrial -grade reagents are used The general steps for preparation are: Different proportion of hydrogen dioxide solutions, natural scales, and concentrated sulfuric acids with different proportion at the appropriate temperature with different adding procedures, react for a certain period of time under continuous stirring, and then wash it to neutrality and centrifugal separation. After dehydration, it is dry at 60 ° C vacuum.2. Electrochemical Law: Treatment of graphite powder in a strong acidic fluid to make expansion graphite, hydrolysis, cleaning and dryness. It mainly uses sulfuric acid or nitric acid as strong acid. Essence3. Ultrasonic oxidation method: During the process of preparation of swelling graphite, the ult

2023-08-25

Thermal conductivity of polycrystalline graphite

The so-called carbon materials such as artificial graphite molded products are polycrystalline materials with extremely complex structures, and the basic structure of graphite crystallization has strong anisotropy. Therefore, the macroscopic thermal conductivity of carbon materials, apart from relying on empirical data, is almost unpredictable. The factors that have a significant impact on thermal conductivity include:(1) The differences in the basic properties of the initial raw materials;(2) The manufacturing process - macroscopic anisotropy;(3) Heat treatment temperature - the growth degree of graphite microcrystals;(4) Apparent density, distribution of holes, etc.

2023-09-08

Excellent Electrical Conductivity of Carbon Graphite Materials and Their Applications

Graphite can conduct electricity because carbon atoms have two 2P electrons with the same spin direction, which are in the valence band (also known as the π band) when in the ground state. When excited, it transitions to the empty conduction band (π * band) above, leaving an equal number of holes in the valence band. Electrons carry negative charges while holes carry positive charges. When subjected to an electric field, electrons and holes move in opposite directions, thus contributing to electrical conduction. Due to the close arrangement of carbon atoms in graphite crystals and the deep degree of electron co-occurrence on the 2P band of each carbon atom, the valence band is wider and can slightly overlap with the upper conduction band. The gap width between them can be reduced to 0.01eV. Therefore, as long as the electrons in the valence band are slightly excited, they can transition to the conduction band, leading to an increase in conductivity. Therefore, the resistance of carbon

2024-04-17

The Legend of Graphite

Graphite, this black mineral, carries the legend of thousands of years. Since ancient times, graphite has been a symbol of people's wisdom. Whether in writing or painting, graphite has written a chapter of history with its unique charm. Its texture is delicate, and its color is profound. Each piece of graphite seems like a masterpiece of nature, quietly telling the story of the vicissitudes of time.In the wave of technology, graphite has demonstrated its extraordinary value. As an important industrial raw material, it plays a crucial role in fields such as metallurgy and chemical industry. Meanwhile, graphite is also a darling in the field of new energy, and its excellent conductivity and stability make it shine in fields such as batteries and electrodes. Graphite, with its toughness and durability, witnesses the progress of human civilization.However, the charm of graphite goes far beyond that. Under the influence of culture, graphite has become a carrier of art. Sculptors use graphi

2023-04-03

Graphite products Graphite Application common problems

Graphite artificial synthesis

(1) Taking natural scales graphite as raw materials, use Hummers legal oxygen graphite, and use thermal peeling into graphene, or use ultrasonic dispersion to divert into graphene, and then chemically restore into graphene. Use SEM, TEM, HRTEM, XRD, and RAMAN systems to examine the appearance and structure of graphene.(2) Taking graphene as the basis, titanate tetraododes as titanium sources. First, the solution-water thermal legal system is used to prepare titanium dioxide/graphene nano-composite materials. Use XRD, SEM, TEM, and RAMAN to characterize the crystal structure, granular appearance and chemical composition of titanium dioxide/graphene nano -composite materials. The results show that the synthetic titanium dioxide nanocrystal is a sharp titanium structure, the crystalline condition is good, titanium dioxide and graphite The composite effect is better. The photocatalytic performance of nano crystals was studied, and the results showed that titanium dioxide/graphene catalyti