2023-11-01

The Electronic Effect of Graphene

Graphene already exists in nature, but it is difficult to peel off a single layer structure. Graphene is stacked layer by layer to form graphite, with a thickness of 1 millimeter containing approximately 3 million layers of graphene. A pencil lightly scratches on paper, leaving traces that may be several or even just one layer of graphene.The carrier mobility of graphene at room temperature is about 15000 cm2/(V · s), which is more than 10 times that of silicon material and more than twice that of the known material indium antimonide (InSb) with the highest carrier mobility. Under certain specific conditions, such as low temperature, the carrier mobility of graphene can even reach up to 250000 cm2/(V · s). Unlike many materials, the electron mobility of graphene is less affected by temperature changes. At any temperature between 50 and 500K, the electron mobility of single-layer graphene is around 15000 cm2/(V · s).In addition, the semi integer quantum Hall effect of electron carriers

2023-11-13

Compared with ordinary graphite powder, ultrafine graphite powder

Compared with ordinary graphite powder, ultrafine graphite powder materials have the characteristics of low melting point, high chemical activity, strong magnetism, good thermal conductivity, and abnormal absorption of electromagnetic waves due to the "volume effect" and "surface effect". In recent years, ultrafine graphite powder has become a cutting-edge research field in interdisciplinary fields such as polymer chemistry, physical chemistry, inorganic chemistry, and materials science.The smaller the particle size of ultrafine graphite powder, the more significant the physical and chemical properties change, and ultrafine graphite powder does not require additives. This opens up broader avenues for the application of high-performance inorganic structural materials. The smaller the diameter of ultrafine graphite powder particles, the larger their total specific surface area, and the corresponding increase in surface energy, resulting in higher chemical activity. This can be used as a

2023-03-08

Introduce the asphalt rubber pendant penetration processing process of graphite board

Introduce the general operating process of graphite board asphalt jelly penetration processing process. After the general operation process of graphite board immersion is installed in the commodity, first vacuum packaging (absorbing the gas in the air pores in the pores of the goods) is then put in the impregnation agent, and then applied to the liquid level Press, make the pores of the penetrated goods. It is used for different intentions, and the standards of impregnation agent processing process are not thorough. Below, I will introduce the asphalt rubber mud impregnation processing process of graphite board in detail.The whole process of processing the processing technology of asphalt rubber -soaking small graphite board, electrode connector and its graphite anode board:First of all, the semi-finished processing surface of the graphite board was burn, and then put it into the product box and put it in the temperature of about 4 hours in the temperature of about 240-Soot. After the

2023-10-18

How is high carbon graphite made?

The flotation method for extracting high carbon graphite has the lowest energy consumption, reagent consumption, and cost in mineral purification. This is the biggest benefit of flotation method for purifying high carbon graphite. But when using flotation method to purify graphite, it can only make infinite progress in the grade of graphite. Regarding flake graphite, it is not only impossible to dissociate its complete monomer, but also not beneficial for maintaining the large scale of graphite. To obtain high carbon graphite with a carbon content of over 99%, it is necessary to use chemical methods to purify the graphite.（1） High carbon graphite alkali acid purification method. The carbon content of graphite purified by alkaline acid method can reach over 99%, with characteristics such as low one-time investment, high product grade, and strong process adaptability. It also has strong universality. The purification of non-metallic minerals can accept the advantages of alkaline acid me

2023-12-22

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

2023-02-22

What are the scope of application of graphite anode?

High -purity graphite board is made of high -quality high -purity graphite. High -purity graphite refers to the carbon content of graphite more than 99.99%. High -purity graphite producers use oil coke as raw materials. Production, after the production of rigorous high -purity graphite processing process. High -purity graphite has excellent characteristics such as good conductivity, heat resistance, acid suppression, alkali etching, and easy production and processing. High -purity graphite products are generally used to refractor and thermal insulation materials and building coatings in the metallurgical industry. , Pencil core in the light industry, motor carbon brush produced by the electrical equipment industry, electrical grade of electricity production produced by the rechargeable battery industry, and the production of metal catalysts in the organic fertilizer industry.The anode oxygen graphite board is also called graphite positive film, graphite positive rod, which has high -q

2023-04-25

What is the role of scales when galgling?

The application of scales graphite is widely used in industries. Mulchogenic sand is one of the applications of them. Cover sand refers to the sand or core sand with a solid resin film on the surface of the sand grain. In the middle, scales need to be used. Today, I will explain what the scales have the functions when gog graphic is covered with membrane sand:The scaled graphite is used as a lubricant in the lubricant in the sandy sand. The littering of the luster sand can play a lubrication and high temperature resistant role in the sandwich sand. For the requirements of scales with scales in gifsta, it is required to be lubricated as a lubricant and high melting point, and the littering of the lubrication is a natural scale graphite with good lubrication. Carbon content. The melting point of the scale graphite itself is very high. After the production process processing, the high temperature resistance of scales graphite with scales with scales will be higher, and the lubrication ef

2023-03-09

Many new main uses of graphite have already been developed and designed

Many new main uses of graphite have long been developed and designed with the development trend of scientific and technological progress. Graphite has many new main uses. High -purity graphite products are used for high -purity metallurgical industry, electronics industry, Chinese nuclear industry and mold processing; general graphite products can be used as a wall -building raw material for mining with aluminum electrolytic grooves, non -metallurgical tunnel furnaces, and non -ferrous metal furnaces. Calcium residual raw materials can be used as carbon increases for ironmaking industry. There are many types of carbon quality raw materials used to seepage nitrogen, including artificial synthesis of graphite, petroleum coke, casting focus, and pure natural graphite.Graphite products are at least within 2000 degrees. This is because carbon must be graphite at a high temperature natural environment of 2000-3300 degrees at a high temperature and natural environment of at least 10 days and

2023-04-18

The application of scales graphite in the coating industry

The functional fillers of scales are mainly used for anti -corrosion coatings, fireproof coatings and conductive coatings.As an anticorrosive material, it has a good rust -proof primer made of charcoal black, talc powder and oil. It has good chemical resistance and solvent corrosion performance. If you add chemical pigments such as zinc yellow to the formula, its rust -proof effect is better. EssenceIt is used as a fireproof filler. It is expandable graphite. It is a graphite intervertebral compound obtained by natural graphite scales. 300 times) suffocating the flame, and at the same time, the expansion material is generated to achieve the effect of isolation of the flame, delay or interrupting the flame spread, and it is not burning, soft, high on the surface, and good coach layer. However, the volume and dosage of the expansion body should be appropriate. Tests show that 150um particles, 30%expansion multiple, and 5%of the amount are the most suitable.Scales graphite can be directl

2023-10-17

Method for manufacturing low-density expanded graphite blocks using flexible graphite

In recent years, various types of low-density carbon graphite materials have been actively studied, including carbon (graphite) foam made of mesophase pitch or polymer resin, and carbon nano foam formed when carbon materials are ablated by high repetition rate pulsed laser. Expanded graphite is also a low-density carbon graphite material. Due to the simple preparation process, low production cost, and convenience for large-scale industrial production of expanded graphite, research on expandable graphite has continued to deepen in recent years. The following editor from Jinhui Graphite Company introduced the method of making low-density expanded graphite blocks by soaking flexible graphite in concentrated acid:The worm like shape and weak macroscopic structure of expanded graphite limit its application. If a stable and expandable graphite block can be made, it will be beneficial for expanded graphite to play its role as a functional material for adsorption, insulation, thermal conducti