Time：2023.06.20Browse：1
As a functional filler for coatings, flake graphite is mainly used for anti-corrosion coatings, fireproof coatings, and conductive coatings. As an anti-corrosion material, it is a rust resistant primer made of carbon black, talc powder, and oil, which has good chemical resistance and solvent corrosion resistance. If chemical pigments such as zinc yellow are added to the formula, the rust prevention effect will be better.
The manufacturer of flake graphite believes that expandable graphite is a Graphite intercalation compound made from natural graphite flakes through chemical or electrochemical treatment. Under heating conditions, the volume of expandable graphite rapidly expands (up to 300 times), suffocating the flame and producing expanding substances that can isolate the flame, delay or interrupt its spread, be non combustible, have good flexibility, high surface energy, and good carbonization layer strength. However, the volume and dosage of the expansion body should be appropriately selected. The experiment shows that a particle size of 150 m, an expansion rate of 30%, and a dosage of 5% are more suitable. Graphite can be directly used as carbon conductive filler or made into composite conductive filler for conductive coatings. However, due to the large number of graphite flakes, the performance of the coating becomes fragile, and its application is limited. To this end, measures are taken to further improve the conductivity of graphite and effectively reduce the amount of graphite sheets added.
The manufacturer of flake graphite believes that solvent-free thick film conductive coatings use short cut fiber materials with good deformation resistance and cracking resistance as functional fillers. This coating has the characteristics of corrosion resistance, low residual stress during curing, good resistance to matrix deformation and cracking, stable construction performance, and long-term electrostatic conductivity. It can be used to guide the electrostatic coating of the inner wall of crude oil storage tanks. Data shows that by using chemical plating technology to coat graphite powder with metals such as copper, nickel, and silver, a composite conductive filler is prepared. It is used in conductive coatings at a dosage of 30%, which not only has good conductivity but also further improves corrosion resistance.
In lithium-ion battery materials, the negative electrode material is the key to determining battery performance. As a high crystallinity graphite material, the particle size of flake graphite directly affects the specific surface area of the electrode and the ratio of edge carbon atoms, and has a significant impact on the irreversible specific capacity of charging. Therefore, flake graphite plays a crucial role in batteries.
1. Flake graphite has advantages such as high electronic conductivity, large lithium ion diffusion coefficient, high embedding capacity, and low embedding potential, making it one of the important materials for lithium batteries.
2. Scale graphite can stabilize the voltage of lithium batteries, reduce their internal resistance, and prolong their storage time. Increase battery life.
3. Scale graphite can reduce the amount of flake graphite powder used in lithium batteries, greatly reducing the cost of the battery.
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.
Computers, cars, airplanes, and space capsules all need battery as power, and the core of the battery is battery material. According to its chemical composition and structure, it can be roughly divided into the following categories:The main ingredients are alloys of lead and lead, copper, zinc, tin, etc. Lead -acid batteries are a mature, stable energy storage equipment, which are widely used in automotive, UPS and other fields.Cobalt, nickel, manganese, iron and other elements. Lithium -ion batteries have become one of the popular batteries due to their high energy density, long life, and no pollution. Widely used in mobile power, electric vehicles, drones, smart homes and other fields.Nickel, cobalt and other elements. Because of its high capacity, long life and other characteristics, nickel -metal hydride batteries have become one of the main batteries in satellite, ships, electric tools and other fields.The main ingredients are oxygen in aluminum and air. Aluminum -air batteries h2023-07-05The development and application of battery materials
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