Preparation and application of molybdenum disulfide

Molybdenum disulfide can be prepared by natural methods, namely molybdenite concentrate purification method, which removes acid-insoluble matter, SiO2, Fe, Cu, molybdenite concentrate from high-quality molybdenum concentrate through certain physical and chemical actions. Further purify impurities such as Ca and Pb to obtain nano-molybdenum disulfide. The nano-molybdenum disulfide prepared by this method can maintain the crystal shape of natural molybdenum disulfide, has good lubricating properties, and is suitable for making lubricants. However, the purity of nano-molybdenum disulfide produced by natural methods is not high, and the purification technology needs to be further improved. When the temperature is lower than 400 ℃, when working in the ordinary atmosphere, it is recommended to use the lower cost MoS2. It has lubricating ability below 1300 ℃, and the lower cost MoS2 is recommended.

Chemical synthesis

The synthesis method can produce sulfides with high purity, few impurities and fine particle size, and can prepare sulfides meeting different functional requirements. Therefore, the production of nano-sulfides by synthetic methods has always attracted attention. There are many methods for preparing nano-molybdenum disulfide, such as ammonium tetrathiomolybdate thermal decomposition method, hydrogen sulfide or sulfur vapor reduction method, high-energy ball milling method, carbon nanotube space confinement method, hydrothermal synthesis method, high-energy physical method and chemical method. Method combination and so on. Generally speaking, there are two preparation methods. Can directly reach tungsten source or molybdenum source and sulfur source to obtain nano-molybdenum disulfide,

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.