2023-08-25

Chemical properties of graphite and carbon materials

Carbon materials are chemically inert in non oxidizing media. Under normal temperature and pressure, no chemical changes will occur. Except for long-term immersion in nitric acid, hydrofluoric acid, or in fluorine, bromine, and other strong oxidizing atmospheres, interlayer compounds will slowly form. It is not corroded by other acids, bases, and salts, and does not interact with any organic compounds. There is no significant oxidation phenomenon of graphite within 450 ℃ in the air. It only reacts with water vapor above 700 ℃ and with CO and CO2 above 900 ℃. The temperature at which graphite produces carbides with certain metal and oxide powders is mostly above 1000 ℃.The chemical reactions of carbon materials can be divided into the following three types:(1) Gasification reaction and high-temperature oxidation reaction;(2) Solid solid reactions with metals, ceramics, etc;(3) Formation reaction of interlayer compounds.

2023-03-03

What aspects will endanger the use period of graphite board

First, the quality of the production and processing of graphite board is the direct cause of the life of the application of its application. Graphite board production and processing must be careful to reach the overall goal of the standard. For example, pre -immersing this level must be well -proportioned, so that its resistance is basically unremittingly consistent, so that the conductivity can be proportioned to prevent the entire production process from occurring in the process of production Some part is complete, but some of the erosion is serious, so that all personnel come out to consume.In the second place, the graphite board must have an excellent office environment, which is the fundamental to prolong life. During the entire production process, reduce the impact and clean up the office environment. It can check the power circuit on time, produce at the best temperature, and reduce the air oxidation of the gas to its air.In the end, high -quality graphite boards are used to im

2023-05-25

pure graphite

It is made of pure graphite board or metal (tooth plate, tablet, net) to enhance the cutting or stamping of graphite plates, with many excellent sealing performance, such as: heat stability, self -lubrication, corrosion resistance, non -aging, non -crispy, etc., in the place, in the case, in terms of The strict working conditions can be used for a long time, and rarely needs to be maintained. Different metal thin plates can be selected. The type of type can be optional, the inner wrap, the edge of the wrap, the inside and the outside.Graphite cutting pads are made from pure graphite board punching or cutting. It has good anti -corrosionability, high/low temperature, good compression back elasticity and high strength, a variety of round and complex complicated types of complicated Geometric pads are widely used in pipelines, valves, pumps, pressure vessels, heat exchangers, condenser, generators, air compressors, exhaust pipes, refrigerators, etc.

2023-04-21

What should be paid attention to when processing refractory materials with flake graphite?

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

2023-03-14

What are the main products of graphite products?

1. All kinds of high -pure graphite molds, graphite molds for continuous casting, sealing ring for chemical machinery, geological drill sintering molds, graphite heating elements, aluminum plug sticks and stirring rods, bottom bowl bases, poured tube, stream slot protection Set, graphite ring, roller, barboard, graphite, graphite board, graphite electrode, graphite precision device.2. Vajrayana products, saw blades, drilling molds, drill molds, roller molds, grinding wheels, 坩埚 and various alien molds.3. Distribute various high -quality high -quality graphite materials and special graphite G4 materials, electric sparks, cast materials, hoods, round materials, graphite powder.4. The products of our factory are widely used in various graphite products such as machinery chemical, mold, oil, textile, electromechanical, diamond sintering molds.

2023-05-10

The application of scales graphite in LED lights

Scales graphite is used in various industries, and scales can also be applied to LED lights. The following editors will explain the application of scales in LED lights in detail in detail.The poor heat dissipation of LED lamps will cause problems such as power damage, acceleration of light decay, and shortening life. It is always top priority to improve the performance of the LED lighting system. It is difficult for metal materials to be treated in LED heat dissipation applications. Multi -problems such as conductivity, easy deformation, and difficulty recycling waste.This problem will not occur in graphite materials. The scales have good plastic plasticity, easy to process, and have excellent high temperature resistance and thermal conductivity. They can be processed into graphite heat sinks. The heat will be absorbed by graphite heat sink Graphite can also be combined with plastic to make cooling lamps, heat dissipation and heat sink cups and heat dissipation shells.The heat dissipa

2023-05-22

Graphite melting point

Graphite is a kind of homogenous alien in element carbon. Each carbon atom is connected to the other three carbon atoms (multiple hexagonal sixtures with honeycomb -shaped hexagonal) with covalent bonds to form covalent molecules. [1] Because each carbon atom will release an electron, those electrons can move freely, so graphite is a conductive body. Graphite is one of the softest minerals, and its purpose includes a pencil core and lubricant. Carbon is a non -metal element that is located in the second cycle IVA family located in the element cycle table. Latin is Carbonium, which means "coal, charcoal".The melting point of diamond is 3823K, and the melting point of graphite is 3773K. Graphite melting points are lower than diamonds. The melting point of graphite and diamond cannot be considered simply from the aspects of the key energy. If the number of broken keys during melting is ignored, the data obtained is not desirable

2023-08-23

Excellent characteristics of graphite plates

Graphite plate is a good technical property, and its good properties are widely used in various industries. Due to the excellent chemical and physical properties of the product, it has gradually become a key raw material for making grinding tools. Graphite belongs to the raw material of graphite carbon. During the production process, alkaline resistant organic chemical compounds are added, and then subjected to high-pressure manufacturing and forming. After undergoing high-temperature heat treatment, production and processing are carried out, thereby reducing the porosity of graphite products, improving the relative density of products, and possessing good alkali resistance and wear resistance. Graphite plates have high-quality characteristics and are suitable for industries such as forging, metallurgy, and grinding tools. CNC lathe processing machines and equipment further enhance the overall production and manufacturing level, and consider the requirements for precision and surface

2023-12-13

What are the reasons for the low initial efficiency of lithium carbide graphite negative electrodes

1. Low specific surface area: As you mentioned, the specific surface area of waste graphite is usually low, which leads to a decrease in the contact area between the electrolyte and graphite, affecting ion insertion and extraction during the initial charge and discharge process, thereby reducing the initial Coulombic efficiency. Compaction and coating treatment can increas