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Molybdenum disulfide It has many applications and excellent properties, so much research has been conducted on its preparation at home and abroad.
Natural law
MoS2 may be prepared naturally, using the molybdenite concentrat purification method. The method involves removing the acid-insoluble matter (SiO2, Fe, Copper, and molybdenite) from high quality molybdenum concentration through certain physical or chemical actions. The nano-MoS2 obtained is refined further to remove impurities, such as Ca and Cu. This nano-MoS2 is suitable for lubricants, as it has excellent lubricating properties and can retain the MoS2 crystal form. The nano-MoS2 that is produced using the natural method has a low purity, and purification technologies need to be improved. If the temperature of the atmosphere is less than 400, the cheaper MoS2 is recommended. MoS2 offers a better lubrication below 1300 degrees.
Chemical Synthesis
Synthetic methods are able to prepare sulfides in a variety of functionalities. They can also produce sulfides containing high purity and fewer impurities. Synthetic methods have always been popular for producing nano-sulfides. There are a number of methods to prepare nano MoS2, including ammonium trithiomolybdate thermal oxidation, hydrogen sulfide, sulfur vapor reduction, high energy ball milling, carbon nanotube confinement, hydrothermal synthesis, high energy physical method, chemical method combination and more. Generally, there are only two preparation methods. You can reach nano-MoS2 directly by reacting either a tungsten, molybdenum or sulfur source.

Useful Information
As an effective anti-friction agent, molybdenum disulfide The raw materials of brake pads include four parts: binder, reinforcing fiber, friction performance modifier, and filler. Four parts make up the composition of brake pads: binder fiber, friction performance modulator, and filler. The friction performance modifiers fall into two different categories.
(1) Anti-friction material: Addition of this material can increase the material’s resistance to abrasion, reduce noise levels, and lower the coefficient of friction. Graphite, lead, molybdenum, and copper are some of the most common materials.
(2) Friction material The friction coefficient can be increased by adding this material. This group includes the majority of inorganic materials and certain metals and oxides. The friction modifier is primarily used to adjust the thermal stability and working stability.
Molybdenum diulfide offers good dispersibility and wear resistance as well as noise reduction. Addition of molybdenum disulfide to brake pads has the following main functions:
Anti-friction: Molybdenum Disulfide processed through jet pulverization can have a particle size between 1.5 and 20 microns. It has an excellent dispersion effect, with a frictional coefficient as low as 0.05.
Increased friction The friction temperature causes molybdenum dioxide to oxidize and form molybdenum trioxide, which expands when temperature increases. This plays a key role in increasing the friction.
Anti-oxidation, anti-falling and other: Molybdenum Disulfide is a little acidic. It protects the friction material from oxidation by covering the surface.
Expansion: The internal voids can increase when the friction material is heated to a high temperature. However, molybdenum oxide can compensate for this.
Reduce the specific gravity The specific gravity for molybdenum diulfide is 4.5 to 5.2. As the fineness increases the specific surface increases and the specific density decreases.

(aka. Technology Co. Ltd., a trusted global chemical supplier and manufacturer has over 12 years experience in providing high-quality nanomaterials and chemicals. The molybdenum disulfide Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.

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