Banner
Home > news > Content
What role does organic molybdenum play in lubricating oil?
- 2018-10-08-

According to Shanghai Zhuoli Luluene Co., Ltd., about 60% of the energy generated by fuel combustion is converted into kinetic energy, but about 30% of this energy is consumed in various friction pairs. How to reduce these " useless " and costly friction losses? The improvement of engine technology and its manufacturing process technology is on the one hand, on the other hand, it relies on adding a suitable friction modifier to the lubricating oil to reduce friction and improve lubrication. Studies have shown that organic molybdenum, especially modified organic molybdenum, can effectively reduce friction, which in turn can improve fuel economy to a certain extent.

What is the role of organic molybdenum? The following is explained by Shanghai Zhuoli Luluene Co., Ltd.:


The lubrication and antifriction mechanism of organic molybdenum is mainly related to the polishing surface of the friction pair. On the surface of the friction pair, at various points of high load pressure, a chemical reaction occurs to promote the decomposition of organic molybdenum and decompose the molybdenum disulfide and some phosphorus. Compounds, sulfides, nitrides, etc., these products are dispersed in an oil solvent, adsorbed and deposited on the friction surface, and the molybdenum disulfide film is formed on the anti-wear layer to achieve antifriction, anti-wear and lubrication effects.


The nitrogen-modified organic molybdenum is dissolved in the lubricant in a liquid form, and forms a physical and chemical reaction film on the friction surface under the mild working condition of the lubricating component. Under the severe conditions of high speed, high temperature and high pressure, the organic molybdenum is decomposed into a nano-sized molybdenum disulfide chemical reaction film, which is stacked on the metal surface in a layered microcrystalline structure. Each layer has a thickness of 0.625 nm and a layer-to-layer distance of 1.32 nm . The nano-scale chemical reaction film transforms the movement mode of the friction surface of the metal from sliding friction to rolling friction, greatly reduces the friction coefficient, doubles the extreme pressure performance, and has a long-term sustained effect.


Just as an oil containing an appropriate amount of sulfur ( S ) has natural antioxidant properties, an oil containing an appropriate amount of organic molybdenum also has direct or indirect antioxidant effects.


The organic molybdenum additive reduces friction in the crankcase and lowers the oil temperature. On the one hand, it is equivalent to strengthening the anti-oxidation and anti-corrosion performance of the oil, delaying the formation trend of the oil gel and coke, and delaying the reduction of the total alkalinity of the oil; The cooling can reduce the volatilization of the oil, especially the volatilization of the low-component oil, thus effectively inhibiting the increase of the viscosity of the oil, prolonging the service life of the oil and the oil change period, reducing the number of times the owner changes the oil and reducing the oil change of the owner. cost. When the product is grafted with an amino acid high temperature anti-oxygen group, it enhances the high temperature oxidation resistance of the oil.


The organic molybdenum additive reduces friction in the crankcase and lowers the oil temperature. On the one hand, it is equivalent to strengthening the anti-oxidation and anti-corrosion performance of the oil, delaying the formation trend of the oil gel and coke, and delaying the reduction of the total alkali value of the oil; On the one hand, cooling can reduce the volatilization of the oil, especially the volatilization of low-component oils, thus effectively inhibiting the increase of the viscosity of the oil, extending the service life of the oil and the oil change period, reducing the number of times the owner changes the oil, and reducing the oil change of the owner. the cost of. When the product is grafted with an amino acid high temperature anti-oxygen group, it enhances the high temperature oxidation resistance of the oil.


Organic molybdenum additives have been widely used in foreign countries, mainly in the fields of internal combustion engine lubricating oil , turbine engine lubricating oil and the like. Numerous literatures indicate nitrogen-containing organic molybdenum and these sulfur-containing additives such as detergent dispersants (sulfurized alkyl phenates, etc.), extreme pressure agents (sulfurized isobutylene, sulfurized fatty oils, etc.), sulfur-containing antioxidants (phosphorous acid, etc.) It has a good synergistic effect of anti-friction and anti-oxidation.