2023-08-07

Impermeable graphite material

Impermeable graphite is an ideal material with good corrosion resistance and thermal conductivity in chemical production. It can be used to make heat exchangers, reaction tanks, absorption towers, gas combustion towers, hydrochloric acid synthesis furnaces, graphite centrifugal pumps, jet pumps, and various pipelines and joints. Impermeable graphite is divided into three categories:1. Impregnated impermeable graphite products - This is made by impregnating the graphite matrix. Impregnating agents not only reduce the porosity of graphite, but also increase the compressive strength and tensile strength of graphite materials by 1-2.5 times and 4-5 times respectively; Increase bending strength by 2-3 times; Increase the impact strength by 2-2.5 times. Commonly used impregnating agents include phenolic resin, furfural ketone resin, furfural alcohol resin, organic silicon resin, water glass, paraffin, divinylbenzene, asphalt, etc.2. Pressed impermeable graphite product - is a material made

2023-07-13

Detailed explanation of the use of scales graphite?

Scales graphite is a natural graphite ore with a shape similar to fish scales and is a hexagonal crystal with a layered structure. This product now has good acid alkali resistance, high temperature resistance, conductivity, heat conduction, lubrication performance. It is now widely used for refractory materials and coatings in the smelting industry. Such as the stabilizer of military fireworks such as magnesium carbon bricks and 军, and the smelting industry's desulfurization promoters, pencil cores, carbon brushes of the electrical industry, electrodes in batteries, catalysts in the chemical industry, etc. Lubricant, molding agent, drawing agent, conductive coating, etc. Scales graphite has a lubrication effect, so it can play a lubricating effect in the lock core, so that the door can be easily opened. The scales graphite also has the characteristics of a complete sheet crystal, thin and tough toughness, stable physical chemical properties, conductivity, temperature resistance, lubri

2023-04-18

Graph

Floating method is a type with less energy consumption and reagent consumption and low cost in the conventional purification method of minerals. Real limited improvement. For scales graphite, multi -segment grinding ore cannot be completely unbuttoned, but it is not conducive to protecting large scales of graphite. Therefore, the use of flotal methods to further improve the graphite quality. High carbide graphite with more than 99%must be pure graphite with chemical methods.(1) chloride roasting methodThe low roasting temperature and smaller chlorine gas consumption of chloride roasting method have greatly reduced the production cost of graphite. At the same time, the carbon content of graphite products is equivalent to the treatment of hydrofluoric acid method. Compared with the recovery rate of chloride and roasting method, because the chlorine gas is poisonous and has strong corrosiveness, it requires high requirements for equipment operations. It requires strict requirements. Seal

2023-06-27

Role of battery specific Graphene in lithium batteries

1. Anode materialDue to its unique two-dimensional structure, excellent electronic transmission capacity and large specific surface area, Graphene for batteries has great potential to replace graphite as a new generation of negative electrode material for lithium ion batteries. The lithium storage mechanism of Graphene is similar to other carbon materials. When charging, lithium ions are separated from the positive electrode and embedded in the carbon material layer, forming Li2C6. When discharging, lithium ions are separated and returned to the positive electrode. Due to the special two-dimensional structure of Graphene, When the lamellar spacing is greater than 0.7 nm, both sides of Graphene can store lithium ions. At the same time, due to the existence of wrinkles, Graphene can also store lithium. In theory, its capacity may be twice that of graphite, higher than 744 mAh/g.In addition, Graphene is mostly micro nano sized, much smaller than bulk graphite, which makes the diffusion p

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

2023-10-17

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

2023-12-19

Key points of graphite deep processing technology

2023-07-18

The effect of battery dedicated graphite as negative electrode on lithium ion power battery fast charge performance

Since its inception, lithium -ion batteries have been widely used in multiple fields. At present, lithium -ion batteries are not only widely used in electronic products such as mobile phones, digital cameras, tablets, but also in the application of vehicle power supply. A certain breakthrough has been achieved; from the analysis of the future development of lithium -ion batteries: Fast charging lithium -ion batteries will become an important research direction for lithium -ion batteries.In order to improve the fast charging performance of the battery -specific graphite negative material, a series of graphite negative materials made of different coke materials were prepared through experiments. It also performed particle size, polarization, and XRD tests, which made a lithium -ion battery rate charging and rate charging. The cycle test and analyzed the test results.The effect of lithium ion power battery fast charging machine and the effect of battery -specific graphite on the battery

2023-07-03

The application field and future development trend of conductive graphite

Condent graphite is a material with high electrical conductivity. Because of its excellent conductive performance and high mechanical strength, it is widely used in many fields. In this article, we will explore the application areas and future development trends of conductive graphite.1. Battery fieldConductive graphite has excellent conductivity and mechanical strength, and is one of the indispensable materials in battery manufacturing. Condent graphite can be used to produce negative electrode materials for lithium -ion batteries, which can increase the cycle life and energy density of the battery while reducing the self -discharge rate of the battery.2. Electronic fieldCondent graphite can be used as conductive materials for electronic products, such as display, touch screen and printing circuit board. The conductive performance of conductive graphite can make the electronic equipment more sensitive and responding faster, and at the same time, it can also improve the mechanical str

2023-05-19

Granular graphite

1. Refractory material: use graphite, smelting colors, special steel and other valuable metals such as graphite, smelting colors, special steel, etc. in the metallurgical industry, as a magnesium carbon brick in the steel refining furnace; in addition, it is also used as a steel insulation, protective residue and steel bag covering agent.2. Conductive material: Graphite can be used as electrodes, brushes, electrical rods, carbon pipes, and visual tube coatings on the electrical industry.3. Abrasion -resistant materials and lubricants: It can be used for wear -resistant and lubricating materials in the mechanical industry. For example, graphite can slide at a speed of 100m/s at a temperature range of -200-2000 ° C, without lubricating oil. Graphite lubricants include oil agents, water, powder colloidal graphite, graphite lubricating fat, graphite root roots, etc.4. Sealing materials: Use flexible or expanded graphite as lyric axes, water turbines, gas turbines, and piston ring cushions