Molybdenum disulfide has great potential in the field of friction lubrication and catalysis

Molybdenum disulfide is a typical two-dimensional material, and graphene has been widely used in various fields and is highly sought after by the scientific and industrial circles. Therefore, what is a two-dimensional material. In short, two-dimensional materials refer to materials in which electrons can move freely (planar motion) on two-dimensional non-nanoscale (1-100 nm), such as graphene, boron nitride, transition metal compounds (disulfides) ), molybdenum, tungsten disulfide, tungsten disilicide, black phosphorus, etc.

The application fields of two-dimensional materials are very wide. Combined with the author's previous introduction, examples are as follows: spintronics, printed electronics, flexible electronics, microelectronics, memory, processors, super lenses, terahertz, super capacitors, solar cells, safety labels. , Quantum dots, sensors, semiconductor manufacturing, NFC, medical, etc.

In addition to graphene, molybdenum disulfide (MoS2) as a typical two-dimensional material also deserves our attention. Molybdenum disulfide is composed of molybdenum atoms and sulfur atoms, and the thickness is only three atoms. The thickness of graphene is almost the same, but the band gap of molybdenum disulfide is 1.8 eV, while graphene has no band gap. In this regard, the author once introduced that the research team of the Berkeley Laboratory of the US Department of Energy has accurately measured the band gap of the semiconductor two-dimensional material molybdenum disulfide (MoS2) and revealed the powerful tuning mechanism and its relationship. The relationship between the electronic and optical properties of two-dimensional materials.

In addition, in terms of electron mobility (the moving speed of electrons in a flat plate), the electron mobility of molybdenum disulfide is about 100 cm 2 / vs (that is, 100 electrons per square centimeter per volt), although it is much lower than that of crystals. . The electron transfer rate of silicon is 1400 cm2/vs, but compared with amorphous silicon and other ultra-thin semiconductors, silicon has a better migration rate.

The unique sandwich structure of molybdenum disulfide (MoS2) gives it excellent lubrication, catalysis and other properties, and has great potential in the fields of friction, lubrication and catalysis. Based on the lubrication mechanism of molybdenum disulfide, research on its surface modification is reviewed, including surface organic coating, precipitation reaction coating, intercalation modification, etc.; at the same time, the current application fields of molybdenum disulfide are summarized, such as Self-lubricating thin layer, intercalated battery, high lubricity coating, etc. Catalysts, etc., and look forward to its future research directions.

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.; and the current application fields of molybdenum disulfide, 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;

Antioxidant: Molybdenum disulfide MoS2 friction modifier is obtained by chemical purification and comprehensive reaction. The PH value is 7-8, and it is slightly alkaline. It covers the surface of the friction material to protect other materials and prevent them from being oxidized. Especially to prevent other materials from falling off and increase adhesion;

Molybdenum disulfide friction modifier price

The price of molybdenum disulfide friction modifier  will change randomly according to factors such as production cost, transportation cost, international situation, and market supply and demand of molybdenum disulfide friction  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 .

Suppliers of Molybdenum Disulfide Friction Modifiers

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.