2023-11-14

Several physical and chemical indicators that need to be understood when selecting graphite materials

Graphite is an allotrope of elemental carbon, where each carbon atom is surrounded by three other carbon atoms (arranged in a honeycomb like pattern with multiple hexagons) that are covalently bonded to form covalent molecules. Due to its excellent properties, graphite is used to make many materials. Below are several physical and chemical indicators that need to be understood when selecting graphite materials:1. Average particle diameter of the materialThe average particle diameter of a material directly affects its discharge condition. The smaller the average particle size of the material, the more uniform the discharge of the material, the more stable the discharge condition, and the better the surface quality. For forging and die-casting molds with low surface and precision requirements, it is usually recommended to use materials with coarser particles; For electronic molds with high surface and precision requirements, it is recommended to use an average particle size of 4 μ Mater

2023-11-28

The price of flake graphite powder from graphite manufacturers is relatively cost-effective

The colloidal graphite powder produced by graphite manufacturers has good lubrication performance, high conductivity to price ratio, and catalytic reaction characteristics. At the same time, it has very high ductility and can be used to produce various commodities. Colloidal graphite powder is commonly used as a conductive electrode for lead-acid batteries, a positive and negative conductive agent for high-capacity lithium batteries, and a raw material for heat-resistant lubricants.The companies that graphite manufacturers often use colloidal graphite powder are as follows:1. Good lubrication characteristics, commonly used as a mold lubricant in the production process of organic fertilizers and metal catalysts in agriculture and animal husbandry.2. It can withstand temperatures up to thousands of degrees Celsius and is often used as a heat-resistant lubricant material and a corrosion-resistant lubricant material.3. Powder metallurgy film remover and metal alloy raw materials, lubricat

2023-10-10

Introduction to Graphite Carbon Products

1. Used as refractory material: Graphite and its products have properties of high temperature resistance and strength, and are mainly used in the metallurgical industry to manufacture graphite crucibles. In steelmaking, graphite is commonly used as a protective agent for steel ingots and as a lining for metallurgical furnaces.2. As a conductive material: used in the electrical industry to manufacture electrodes, brushes, carbon rods, carbon tubes, positive electrodes for mercury positive current transformers, graphite gaskets, telephone parts, coatings for television tubes, etc.3. As a wear-resistant lubricating material: Graphite is often used as a lubricant in the mechanical industry. Lubricating oil often cannot be used under high-speed, high-temperature, and high-pressure conditions, while graphite wear-resistant materials can work without lubricating oil at high sliding speeds at temperatures of 200-2000 ℃. Many devices that transport corrosive media are widely made of graphite m

2023-06-27

Why is battery specific graphite widely used in electronic products?

With the acceleration of electronic product updates and the increasing demand for miniaturization, high integration, and high function electronic equipment heat dissipation management, a new electronic product heat dissipation technology - graphite data heat dissipation new solution has also been launched. This solution is based on graphite sheets, which are a new natural graphite solution that uses graphite sheets with high heat dissipation efficiency, small space occupation, light weight, and uniform bidirectional heat conduction, Eliminate "hot spots", shield heat sources and components, and improve the functions of Consumer electronics. This new type of graphite sheet is used for laptops, flat panel displays, digital cameras, mobile phones, and Personal Care Assistant.The battery specific graphite sheet is made of expanded graphite by pressing and roasting. The battery specific graphite sheet has high temperature resistance, thermal conductivity, flexibility, elasticity, and good

2023-02-21

What are the advantages of high -purity graphite products

What are the advantages of high -purity graphite products? High -purity graphite has the characteristics of graphite that has undergone unique production and processing, and has the characteristics of anti -corrosion, good heat transfer, and poor possession. Several advantages of high -purity graphite products:1. heat resistance: The solution point of the graphite is 3850 ± 50 ° C, and the melting point is 4250 ° C. Even if the high temperature and high voltage and electricity are burned, the net damage is not large, and the line expansion coefficient is not large. Graphite's compressive strength increases with the temperature, and the graphite compressive strength is doubled at 2000 ° C. The chemical change temperature of the heat release reaction welding at the construction of the heat control welding project is very high, so that the raw materials of the welding mold application must be heat -resistant.2. Conductivity and heat transfer: The conductivity of high -purity graphite is

2023-11-01

Basic Research on Graphene

Graphene is a type of ² A new material in which hybrid connected carbon atoms are tightly packed into a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro/nano processing, energy, biomedical, and drug delivery. It is considered a revolutionary material in the future. Andre Geim and Konstantin Novoselov, physicists from the University of Manchester, UK, successfully separated graphene from graphite by micromechanical stripping method, so they jointly won the 2010 Nobel Prize in Physics. The common methods for producing graphene powder are mechanical stripping, redox, SiC epitaxial growth, and the film production method is chemical vapor deposition (CVD).Graphene has special significance for fundamental research in physics, as it enables some quantum effects that could only be theoretically demonstrated to be experimentally verified. In two-di

2023-12-11

The service life of graphite crucibles

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.

2023-05-15

How to solve the corrosion of the device in the scale graphite?

How to avoid the corrosion of the equipment on the equipment, thereby reducing equipment investment and maintenance costs, and improving production efficiency and profits is a problem that each chemical enterprise always needs to solve. Many products are resistant to corrosion but not high temperature, but scales graphite has both advantages. The following editors will introduce the problem of the device corrosion in detail how to solve the equipment of the scales:1. Excellent thermal conductivity. Scales graphite also has good thermal conductivity. It is the only non -metallic material with a thermal conductivity higher than the metal. The thermal conductivity coefficient is 2 times that of carbon steel and 7 times that of stainless steel. Therefore, it is suitable for heat transfer equipment.2. Excellent corrosion resistance. Various types of carbon and graphite have excellent corrosion resistance to all concentrations of hydrochloric acid, phosphate, and hydrofluoric acid, includin

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