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Molybdenum disulfide It has a broad range of application and excellent properties, so much research has been conducted on the preparation of nano-MoS2 both at home as well as 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 a molybdenum concentration of high quality through physical and chemical action. The nano-MoS2 obtained is refined further to remove impurities, such as Ca and Cu. This nano-MoS2 is made in a way that maintains the MoS2 crystal structure, provides good lubrication, and can be used to make lubricants. 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 lower-cost MoS2 is recommended. MoS2 offers a better lubricating effect below 1300 degrees.
Chemical Synthesis
The synthetic method is able to prepare sulfides in different sizes and puritys, with less impurities. It can also be tailored to meet specific functional requirements. Synthetic methods have always been popular for producing nano-sulfides. There are several methods of preparing nano MoS2, such as the thermal decomposition of ammonium trithiomolybdate, the reduction of hydrogen sulfide and sulfur vapor, high energy ball milling, carbon nanotube confinement, hydrothermal synthesis, and more. There are two main 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 (binding agent), reinforcing fiber (reinforcement fiber), friction performance modifier (friction performance modifier), 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 coefficients of friction. These materials are mainly graphite (or molybdenum), lead, or copper.
(2) Friction material The friction coefficient can be increased by adding this material. Among the most common inorganic materials are metals, their oxides and certain fillers. The friction modifier is mainly used to adjust the thermal stability and the working stability of the material.
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 1.5-20 microns. It has an excellent dispersion and anti-friction performance.
Increased friction The friction material becomes more aggressive due to the increased friction temperature. Molybdenum dioxide oxidizes and forms molybdenum trioxide.
Anti-oxidant, anti-falling and other: Molybdenum Disulfide is a little acidic. It protects the friction materials by covering the surface. This prevents other materials from oxidizing.
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 between 4.5-5.2. 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 super-high-quality 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.