2022-11-23
2023-11-08Graphite is a high-energy crystalline carbon material, which has high application value in high-performance materials due to its unique structure and characteristics such as conductivity, thermal conductivity, lubrication, high temperature resistance, and chemical stability. It is widely used in fields such as metallurgy, machinery, environmental protection, chemical engineering, fire resistance, electronics, medicine, military industry, and aerospace, and has become an essential non-metallic material for modern industry and the development of high, new, and cutting-edge technologies, The position in the development of the national economy is becoming increasingly important, and international industry experts predict that the 20th century will be the century of silicon, and the 21st century will be the century of carbon.Natural graphite in China has good geological conditions, wide distribution, abundant resources, and good quality, with reserves and production ranking first in the wo
2023-11-08Graphene and expanded graphite exhibit different behaviors in both material structure and application fields. Expanded graphite can be used as a raw material for the production of graphene. For example, the Hummers method can be used to obtain graphene oxide through ultrasonic expansion of graphite oxide. When the expanded graphite is peeled off into a single piece, it becomes graphene. Peeling off into several layers is a few layers of graphene, and graphene nanosheets can be prepared from about ten to thirty layers.Practical application fields of expanded graphite1. Application of Medical MaterialsMedical dressings made of expanded graphite have many excellent properties and can replace most traditional gauze.2. Application of Military MaterialsCrushing expanded graphite into micropowders has strong scattering and absorption properties for infrared waves, making it an excellent infrared shielding material and playing an important role in modern optoelectronic warfare.3. Application
2023-11-07Expanded graphite, also known as flexible graphite or vermicular graphite, is a new type of carbon material. Expanded graphite has many advantages, such as large specific surface area, high surface activity, good chemical stability, and high temperature resistance. The commonly used preparation process for expanded graphite is to use natural flake graphite as the material, which is first oxidized to form expandable graphite, and then expanded to form expanded graphite. Expanded graphite materials can instantly expand by 150-300 times in volume when exposed to high temperatures, changing from flaky to wormlike, resulting in a loose structure, porous and curved structure, expanded surface area, improved surface energy, and enhanced adsorption of flake graphite. Wormlike graphite can be self embedded between them, making the material have functions such as flame retardancy, sealing, and adsorption. It has wide applications in fields such as life, military, environmental protection, and c
2023-11-07Graphite is divided into two types: natural graphite; The second is artificial graphite. Although with the improvement of manufacturing technology, the function of artificial graphite is no less than that of natural graphite in many cases, natural graphite has always maintained its unique advantages in some fields.Among natural graphite resources, flake graphite (crystalline graphite) has low reserves and high value. It has good conductivity, thermal conductivity, lubrication, and oxidation resistance, and is widely used in industries such as metallurgy, machinery, chemical engineering, refractory materials, aerospace, etc. It is one of the indispensable non-metallic materials for the development of high-tech today.Natural flake graphite peelingThe flake graphite structure is flaky and has good surface properties, making it one of the best floatable minerals in nature. According to the size of the scales, flake graphite can be divided into large flake graphite (with particle sizes of
2023-11-06We all know that flake graphite has good conductivity, so in many conductive fields, flake graphite is chosen to be added to the products produced to achieve the best use effect. So what are the actual uses of flake graphite in the conductive industry? Below are one or two examples of flake graphite used in the conductive industry:1. The application of flake graphite as electrode material.As a new type of nanoscale carbon material, flake graphite not only has excellent conductivity and adsorption, but also has good chemical stability, making it widely used in electrode materials.2. Preparation of polymer based conductive composites using flake graphite as a conductive filler.Scale graphite is one of the conductive filling materials, and the commonly used carbon black has advantages such as good conductivity, low friction loss, and low pollution. Moreover, the addition of scale graphite can greatly improve the conductivity of polymer materials, leading to the transition of polymers fro
2023-11-06The flotation method is one of the conventional mineral purification methods that consumes less energy and reagents, and has a lower cost. This is a major advantage of the flotation method for purifying graphite. However, using flotation to purify graphite can only achieve a limited increase in its grade. For flake graphite, using multi-stage grinding not only cannot completely dissociate its monomer, but also is not conducive to protecting the large scale of graphite. Therefore, using flotation to further improve graphite grade is neither economical nor scientific. To obtain high carbon graphite with a carbon content of over 99%, chemical methods must be used to purify the graphite.（1） Chlorination roasting method. The low roasting temperature and low chlorine consumption of the chlorination roasting method significantly reduce the production cost of graphite. At the same time, the carbon content of graphite products is equivalent to that after treatment with hydrofluoric acid, and t
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