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MoS2 Friction Modifier Molybdenum Disulfide
Molybdenum disulfide (MoS2) is a critical powder lubricant.
The working environment of lubrication and anti-friction is often not a single requirement. Many institutions are developing molybdenum disulfide (MoS2) composite lubricating materials, which can provide the required lubrication performance and corrosion resistance according to different working conditions. Anti-oxidation performance, anti-impact performance, high-temperature resistance, salt spray resistance and other composite functions.
Molybdenum disulfide powder is made from natural molybdenum concentrate powder after chemical purification. The colour of the product is slightly silvery grey, with a metallic lustre, it has a greasy touch, and is insoluble in water. Molybdenum disulfide powder has the advantages of excellent dispersibility and non-stickiness. It can be added to various greases to form a non-sticky colloidal state, which increases the lubricity and extreme pressure of the lubricant; it is also suitable for high temperature, high pressure and high speed, High-load mechanical working state, extend equipment life. The primary function of MoS2 for friction materials is to reduce friction at low temperatures and increase resistance at high temperatures, and the loss on ignition is small.
MoS2 is widely used as a good powder lubricant, and the following working conditions are applicable:
1. Lubrication under broad temperature conditions
The applicable range of lubricating oil and grease is about 60 ℃ to 350 ℃. MoS2 powder lubricant can be used in the operating temperature range of 270 ℃ to 1000 ℃.
2. Lubrication under heavy load
Generally, the oil film of lubricating oil and grease can only bear a relatively small weight. Once the pressure exceeds its limit, the oil film will rupture, and the friction surface will bite. The MoS2 powder lubricant film can withstand an average weight of 108Pa.
3. Lubrication under vacuum
Under high vacuum conditions, general lubricating oils and greases have a greater vaporability, which can easily damage the vacuum environment and affect the working performance of other components. MoS2 powder lubricant is generally used for lubrication.
4. Lubrication under radiation conditions
Under radiation conditions, general liquid lubricants will polymerize or decompose, losing lubricating properties. MoS2 powder lubricant has better radiation resistance.
5. Lubrication of conductive sliding surfaces
The friction of conductive sliding surfaces such as motor brushes, conductive sliders, solar collector rings on sliding satellites working in a vacuum, and sliding electrical contacts can be lubricated with composite materials composed of carbon graphite or metals.
6. Occasions with very harsh environmental conditions
In harsh environments, such as transportation machinery, engineering machinery, metallurgy and iron and steel industry institutions, mining machinery and other transmission parts working in harsh environments such as dust, sediment, high temperature and humidity, MoS2 powder lubricant can be used for lubrication.
7. The occasion of the corrosive environment
Such as marine machinery, chemical machinery and other transmission parts work in corrosive media such as water (steam), seawater and acids, alkalis, salts, etc., they are subject to different degrees of chemical corrosion. MoS2 powder lubricant can be used as the transmission part in this situation.
8. When the environmental conditions are immaculate
MoS2 powder lubricant can be used for transmission parts of electronics, textile, food, medicine, paper making, printing and other machinery to avoid pollution.
9. Where no maintenance is required
Some transmission parts do not need support, and some transmission parts need to reduce the number of upkeep to save costs. In these occasions, the use of MoS2 powder lubricant is reasonable and convenient and can save money.
High-quality MoS2 has higher purity, more regular crystal structure and larger grains. At the same time, the content of non-lubricating solid impurities is lower, which eliminates the negative influence or interference of other contaminants on the molybdenum disulfide lubricant, so that its performance can be fully exerted.
The application fields of high-purity molybdenum disulfide (≥99%) include semiconductor industry, molybdenum disulfide target, battery industry, carbon brush industry, molybdenum disulfide coating and other areas.
Infomakis dedicated to the technology development of special oil additives, combined the Technology of nanomaterials developed dry lubricant and oil additives two series. Our products can significantly improve the performance of lubricating oil, improve energy efficiency, effectively protect the lubrication device and extend the oil change cycle, which can satisfy the lubrication oil constantly upgrading for high-end engine oil additives.
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