The development history of molybdenum disulfide

Boron nitride crystal belongs to the hexagonal crystal system, the structure is similar to graphite, and there are many similarities in performance, so it is also called "white graphite".

Boron nitride has good heat resistance, thermal stability, thermal conductivity and high-temperature dielectric strength. It is an ideal heat dissipation material and high temperature insulation material. Boron nitride has good chemical stability and can resist the erosion of most molten metals. It also has good self-lubricating properties.

Boron nitride (BN) ceramics is a new type of industrial material developed with the aerospace and electronics industries, and has a wide range of applications in industry and production.

The current research on boron nitride mainly focuses on its hexagonal phase (h-BN) and cubic phase (c-BN). Hexagonal boron nitride has lubricity, thermal conductivity and good high temperature performance. Recent studies have shown that the hexagonal phase is also in a stable state of thermodynamic equilibrium at room temperature and pressure. The main application field of hexagonal boron nitride is still as a raw material for the synthesis of cubic boron nitride. Cubic boron nitride is an artificial synthetic material, which has application prospects in many fields.

The high temperature and high pressure method generally uses hexagonal boron nitride as the raw material. At the same time, due to the excellent properties of cubic boron nitride, the research on the synthesis method of cubic boron nitride has attracted more and more scientists. Various new preparation methods are emerging in endlessly, and are developing in the direction of low temperature and low pressure, simplicity and feasibility. In recent years, with the rise of nanotechnology and the expansion of application fields of boron nitride ceramics, the synthesis and application of nano boron nitride has become a hot spot.

Hexagonal boron nitride is called white graphite because it has a layered crystal structure similar to graphite and also has physical and chemical properties similar to graphite, such as good lubricity and thermal conductivity. Hexagonal boron nitride is often used as a material for sintering ceramics. H-BN structural ceramics have the characteristics of high thermal conductivity, good electrical insulation performance, low thermal expansion coefficient, and no infiltration with most metals. They have been widely used in high-temperature insulation, atomic energy, metallurgy, aviation and other fields. . As a raw material for the synthesis of cubic boron nitride, because cubic boron nitride is a theoretical low-temperature stable phase, its superior performance is more attractive.

Boron nitride ceramics have excellent thermal stability and dielectric properties. It is one of the few compounds that can reach the decomposition temperature. It has excellent thermal and electrical stability in a wide temperature range. However, due to the high strength, hardness, elasticity, and thermal conductivity of such ceramics, insufficient corrosion resistance, and difficulty in making molded parts, single-phase boron nitride ceramics have not been used in radomes.

As an advanced ceramic material, boron nitride is widely favored in the field of materials research due to its superior mechanical properties. However, due to the harsh conditions of the current synthesis method, this affects the application of boron nitride to a certain extent. Therefore, the new synthesis method of boron nitride has become a hot spot in the study of boron nitride. Choose excellent reaction precursors and use their thermodynamic properties to reduce the external sensing temperature and reaction temperature, and better control the product morphology. Appropriate control of the reaction process and reaction conditions can also control the morphology and particle size of the product.

Overview of molybdenum disulfide friction modifier

The unique sandwich structure of molybdenum disulfide (MoS2) makes it have excellent lubrication, catalysis and other properties, and has great potential in friction, lubrication, catalysis and other fields. Based on the lubrication mechanism of molybdenum disulfide MoS2, the surface is modified. The research status is reviewed, including surface organic coatings, precipitation reaction coatings, intercalation modification, etc. At the same time, the current application fields of molybdenum disulfide are summarized, such as self-lubricating thin layers, intercalation batteries, high-efficiency hydrodesulfurization, Catalysts, etc., and look forward to its future research directions.

Application of molybdenum disulfide friction modifier

Molybdenum disulfide MoS2 friction modifier is mainly used in lubricating oil and grease to improve its anti-wear, anti-friction and extreme pressure properties. Due to its excellent physical and chemical properties such as adjustable band gap, large specific surface area, rich edge sites, and good chemical stability, nano-molybdenum disulfide is used in the fields of optoelectronic devices, catalysis, lithium-ion batteries and supercapacitors, and has great lubrication Application value is one of the hotspots of continuous research.

Molybdenum disulfide MoS2 friction modifier is an important solid lubricant, especially suitable for high temperature and high pressure. It is also diamagnetic, can be used as a linear photoconductor and a semiconductor showing P-type or N-type conductivity, and has rectification and energy conversion functions. Molybdenum disulfide can also be used as a catalyst for the dehydrogenation of complex hydrocarbons, and is also known as the king of advanced solid lubricants. Molybdenum disulfide is a solid powder made from natural molybdenum concentrate through chemical purification and then changing the molecular structure. The color of this product is black with silver gray, metallic luster, smooth to the hand, and insoluble in water. The product has the following advantages: good dispersion and non-stickiness. Can be added to various greases to form a non-stick gel state,

The main function of molybdenum disulfide MoS2 used in friction materials is to reduce friction at low temperatures and increase friction at high temperatures, with a small loss on ignition and volatile in friction materials.

Friction reduction: MoS2 molybdenum disulfide crushed by supersonic jet has a particle size of 325-2500 mesh, particle hardness of 1-1.5, and friction coefficient of 0.05-0.1, which can reduce friction when used in friction materials;

Increase friction: molybdenum disulfide MoS2 friction modifier is not conductive, there are copolymers of molybdenum disulfide, molybdenum trisulfide and molybdenum trioxide. When the temperature of the friction material increases sharply due to friction, the molybdenum trioxide particles in the copolymer expand with the temperature to increase the friction;

Anti-oxidation: molybdenum disulfide MoS2 friction modifier is prepared by chemical purification and comprehensive reaction, PH value is 7-8, slightly alkaline, covering the surface of the friction material, playing the role of protecting other materials and preventing it from being oxidized , Especially to prevent other materials from falling off and increase adhesion;

Molybdenum disulfide friction modifier molybdenum disulfide price

The price of molybdenum disulfide friction modifier molybdenum disulfide will change randomly according to factors such as production cost, transportation cost, international situation, and market supply and demand of molybdenum disulfide friction modifier molybdenum disulfide price. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for MoS2 friction modifier molybdenum disulfide price, please feel free to send an inquiry to get the latest price of MoS2 friction modifier molybdenum disulfide price.

Molybdenum Disulfide Friction Modifier Molybdenum Disulfide Supplier

MoS2 friction modifier molybdenum disulfide supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (the best engine with nano diamond, oil additives, lithium stearate, nano copper and nano oil additives), high-purity targets, functional ceramics and structural devices, and provides OEM services.