Flake graphite is a non-metallic mineral with unique physical and chemical properties such as high temperature resistance, oxidation resistance, corrosion resistance, thermal shock resistance, high strength, good toughness, high self-lubricating strength, strong thermal conductivity and electrical conductivity. Graphite series products are mainly used in metallurgy, machinery, electronics, batteries, chemical industry, light industry, military industry, national defense, aerospace, refractory materials and other industries. Flake graphite is an indispensable and important non-metallic material for modern high-tech.

What are the characteristics of flake graphite? Let's take a look at it briefly.

The flake graphite sheet is thin and has good toughness, excellent physical and chemical properties, good conductivity, thermal shock resistance, and corrosion resistance.

What is the application of flake graphite? Let's take a look at it briefly.

1. Refractory materials. Flake graphite can be widely used in structural refractory materials and coatings in the metallurgy industry, such as magnesia-carbon bricks, crucibles, etc. Desulfurization accelerator for smelting industry, pencil lead for light industry, carbon brush for electrical industry, electrode for battery industry, catalyst for fertilizer industry, etc. After in-depth processing of flake graphite, graphite milk can be produced for lubricants, release agents, wire drawing agents, conductive coatings, etc. The utility model can also produce expanded graphite, which is used as a raw material for flexible graphite products, such as flexible graphite seals and flexible graphite composite materials.

2. Coatings. Flake graphite can be used as the function of Chinese coatings. Fillers mainly include anti-corrosion coatings, fire retardant coatings and conductive coatings.

Anti-rust primer and carbon black, talcum powder, oil and other anti-corrosion materials, has good resistance to chemical and solvent corrosion; formula to add zinc and other chemical pigments, rust effect is better.

Expanded graphite is a natural graphite flake by chemical or electrochemical treatment made of graphite intercalation compounds, is a fire filler. Expandable graphite rod under the condition of heating, the rapid expansion of the volume suffocates the flame, while generating expansion, to isolate the flame, delay or interrupt the role of flame spread, and itself non-combustible, good flexibility, high appearance can, carbonized layer strength is good. However, a suitable one should be selected by the volume and amount of the expansion body. The test shows that 150um particles, 30% expansion ratio and 5% dosage are the most suitable.

The flake graphite rod can be directly used as carbon conductive filler, and can also be made into composite conductive filler for conductive paint. However, due to the large amount of graphite flake, the performance of the coating will become brittle and its application and development will be limited by a certain time. Therefore, corresponding measures are taken to further develop and improve the conductivity of graphite, and effective methods are used to reduce the amount of graphite flakes added. Tianhua Chemical Machinery Research Institute has developed a high temperature corrosion-resistant resin as the base material, with large flake graphite flakes as the main aggregate, which has strong electrostatic conductivity, high body strength and good wear resistance.

The solvent-free thick film conductive coating with chopped fiber material as functional filler has good anti-deformation and anti-cracking properties. The coating has the characteristics of corrosion resistance, low residual stress, good resistance to matrix deformation and cracking, stable workability and long-term electrostatic conductivity. In addition, it can also be used for electrostatic conductive coating on the inner wall of crude oil storage tanks. According to data reports, the use of chemical plating technology on graphite powder plating metal, such as copper, nickel, silver and other composite conductive filler, with 30% of the amount used in conductive coatings, not only its conductivity is very good, and further improve the corrosion resistance.