Time：2023.11.07Browse：1
Expanded 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 chemical engineering.
Preparation method of expanded graphite
Expanded graphite mostly uses chemical oxidation and electrochemical oxidation methods. The traditional chemical oxidation process is simple and has stable quality, but there are problems with acid waste and high sulfur content in the product. The electrochemical method does not use oxidants, and the acid solution can be recycled and reused multiple times. It has low environmental pollution and low cost, but the yield is low, and the requirements for electrode materials are high. Currently, it is only limited to laboratory research. These two methods, except for different oxidation methods, have the same post-treatment methods such as deacidification, water washing, and drying. Among them, chemical oxidation method is the most widely used method so far, with mature process and widespread promotion and application in industry.
2023-04-20Graphene 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.
How to clean up graphite graphite products has high -quality conductivity thermal conductivity, can resist high temperature, analyze good chemical stability. One of the graphite anode boards can be used to use chlorine to use the electrolyte water solution to make, electrolytic salt solution to make it. Alkali can also be used to electroplating a variety of metal composite materials non -metallic material media, which is generally used in chemical enterprises, electronic components and other industries.The following is a detailed description of the appropriate cleaning process:1. Wear work clothing, rain shoes, rubber gloves, safety helmets.2. Prepare sufficient sodium hydroxide solution in advance to clean the graphite anode plate.3. Remove the rear cover of the anode oxidation rod and put it in the graphite cleaning groove for 30 minutes.4. Remove the graphite anode board from the soaking solution and put it on the wooden frame.5. Clear the surface of the graphite anode plate with p2023-02-22How to clean the graphite board
2023-04-03In recent years, graphite molds have continued to impact model shell sales markets with their high -quality characteristics, and have become the new darling of the machinery processing industry. The manufacturers of Kobwee Grapeite products below told everyone that the shortcomings and preventive methods of the heat treatment process of graphite mold.
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, lubricat2023-11-28The price of flake graphite powder from graphite manufacturers is relatively cost-effective
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