The application of graphite powder in the field of lubrication_Industry Dynamics_News

2023-02-07

Natural graphite classification

The dense crystal graphite is also called block -like graphite. Such graphite crystals are obviously visible to the naked eye. The diameter of the particles is greater than 0.1 mm, which is concentrated in 0.1-1m/g than the surface area. This graphite is characterized by high quality. Generally, the carbon content is 60-65%, and sometimes 80-98%, but its plasticity and slipperyability are not as good as scales.

2023-06-12

Application prospect of Graphene in battery materials

In the current technological era, research and development in the field of battery materials are in a stage of rapid development. With the increasing demand from people, the demand for more efficient, environmentally friendly, and safe battery materials is also becoming increasingly urgent. Graphene, as an important new material, is receiving more and more attention and research. This article will discuss the application prospect of Graphene in the field of battery materials.Graphene is a single-layer honeycomb structure material composed of carbon atoms, which has excellent physical and chemical properties. It has outstanding performance in terms of conductivity, thermal conductivity, mechanical strength, and other aspects. These excellent properties provide a wide range of possibilities for the application of Graphene in the field of battery materials.First, Graphene can be used as the electrode material of batteries. Compared with traditional electrode materials, Graphene has highe

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

2023-10-10

Graphite crucible with excellent thermal conductivity

1. Thermal stability: Specially designed for the use conditions of graphite crucibles for rapid heating and cooling to ensure the reliability of product quality.2. Corrosion resistance: The uniform and fine substrate design delays the erosion of the crucible.3. Impact resistance: The graphite crucible can withstand extremely high thermal shock strength, so any process treatment can be carried out with confidence.4. Acid resistance: The addition of special materials significantly improves the quality of the crucible, performs excellently in acid resistance indicators, and greatly extends the service life of the graphite crucible.5. High thermal conductivity: The high content of fixed carbon ensures good thermal conductivity, shortens dissolution time, and significantly reduces fuel consumption or other energy consumption.6. Control of metal pollution: Strict control of material composition ensures that the graphite crucible does not contaminate the metal during dissolution.7. Quality s

2023-12-26

Graphite structure composition

Graphite is a transitional crystal between atomic crystals, metal crystals, and molecular crystals. In the crystal, covalent bonds are formed by sp2 hybridization between carbon atoms on the same layer. Each carbon atom is connected to three other carbon atoms, and six carbon atoms form a regular hexagonal ring on the same plane, extending to form a layered structure. Carbon atoms in the same plane each have one p orbital left, which overlaps with each other to form delocalized π - bonds. Electrons can freely move in the lattice and be excited, so graphite has a metallic luster and can conduct electricity and heat transfer. Due to the large distance between layers and the low bonding force (van der Waals force), each layer can slide, resulting in a lower density of graphite compared to diamond, a softer texture, and a smoother texture. [1]The distance between each layer of graphite is 3.40 Å, which is combined by van der Waals forces. The layers belong to molecular crystals, and the d

2023-08-23

The use of graphite molds is diverse

1. Graphite molds can be used as conductive materials in industry. In this regard, when using electric arc furnaces or submerged arc furnaces to smelt various alloys, strong current will be introduced into the melting zone of the electric furnace through the electrodes of the graphite mold to generate an arc. At the same time, electrical energy will be converted into heat energy to increase the temperature, which can achieve the production conditions for smelting and reaction.2. Graphite molds can be used as corrosion-resistant structural materials in industry. Due to the excellent corrosion resistance of the raw materials in graphite molds, they are often used in stainless steel and other products.3. Graphite molds can be used as compression and casting molds in industry. Due to its relatively small coefficient of thermal expansion and good heat and cold resistance, it can be used as a mold for various glassware and can also save a large amount of metal.4. Graphite molds can be used

2023-07-31

Will the performance changes after expanding graphite multiple times?

Expansion graphite exposure will expand rapidly at high temperatures. It has a certain isolation effect and can be used to extinguish metal fires such as lithium, sodium, potassium, uranium, and cricket. It is a good fire extinguishing agent. In actual use, we found that the functional effect of expansion graphite has a lot to do with the number of expansion of expansion graphite. The following graphite manufacturer editor will explain the function of repeated expansion of expanded graphite:The number of expansion graphite determines the role of expanding graphite. The repeated expansion of graphite powder is fluffy powder, which presents a structure similar to a kneading paper ball on the micro structure, but the active point of the carbon layer edges will increase. When making expansion graphite fire extinguishers, the expansion graphite can be expanded repeatedly. When the expansion graphite expands more than three times, the expansion of the expansion graphite is now less than twi

2023-07-27

One article understands natural scales graphite surface modification methods

Natural scales graphite is a high -quality refractory raw material, but it is difficult to prepare uniform and dense non -fixed refractory materials because the surface of graphite has hydrophobicity. Therefore, the surface of the graphite needs to be modified so that the surface is changed from hydrophobic to hydrophilic, in order to enable graphite to be widely used in refractory materials. Generally speaking, most of the surface modification uses the modified agent to modify the powder. The following introduces a variety of graphite modification methods.First, the wetness of scales graphite and its application limitations. There is no shortage of graphite area, with small surface tension, and about 0.45%of volatile organic objects on the surface, all of which make the wetness of graphite worse. The strong hydrophobicity of the graphite surface makes the fluidity of the pouring materials worse, graphite is easy to reunite, it is difficult to prepare uniform and dense non -fixed -sha

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.

2023-03-14

What are the nature of ultra -fine graphite?

Ultra -fine graphite powder is one of the categories of graphite powder. The raw material of ultra -fine graphite powder is natural scales graphite. The airflow crusher or ultra -fine pieces is used to crush the natural scales graphite. The particle size of ultra -fine graphite powder reaches 6 ~ 10 μm, which is the ultra -fine graphite powder.The preparation process of ultra -fine graphite powder is: natural scales graphite and raw materials focus from compressed air to enter the crushed room by adding feed sprayer, sprayed in the crushing room, spray ultra -high -speed airflow at the crushed room , Fricate into microfimm, with a microfimm airflow, discharge from the exit tube into the hierarchical room, separate the thicker particles, and crushed it again by the rebate tube. Ultra -fine graphite powder was produced.Ultra -fine graphite powder can be widely used in the fields of conductive materials, wear -resistant lubricating materials, atomic energy industry and national defense i

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