Lubricating oil base oil possesses the basic characteristics of lubricating oil and certain use properties, but only relying on improving the processing technology of lubricating oil cannot produce lubricating oil with various properties that meet the requirements of use. In order to make up for the defects in the properties of lubricating oil and to give the lubricating oil some new excellent properties, various additives with different functions must be added to the lubricating oil, and the addition amount ranges from a few percent to tens of percent.

Molybdenum disulfide is one of the few natural high-quality solid lubricants with a friction coefficient of only 0.05, which is smaller than some other lubricants. Aerospace solid lubricants use specially processed nano-IF-MOS2 (inorganic fullerene structure molybdenum disulfide nanoparticles), which is a non-polar spherical structure composed of 60 molybdenum disulfide molecules, similar to carbon 60 in space The particle size is 40 nanometers, and its extreme pressure and anti-wear ability is twice that of ordinary MoS2!

MoS2 has natural weak alkalinity and excellent antioxidant capacity, which can extend the mileage of engine oil. The regular flow of engine oil can maintain the continuous effect of the MoS2 suspension and reduce the precipitation of molybdenum. The biggest problem with MoS2 suspension is that the particles are non-lipophilic substances, and the particles will precipitate if they are not used for a long time.

The problem of sedimentation of particle suspensions is one of the problems that have not been completely solved in the world today. There are many technologies that claim to solve suspension sedimentation, but there are no relevant patent documents to check.

In order to overcome the suspension problem of MoS2, the second generation of molybdenum lubricant additives-organic molybdenum appeared.

Organic molybdenum is a liquid soluble in engine oil. When the engine is running at high temperature and extreme pressure, it will decompose MoS2 and form a MoS2 film on the cylinder wall to achieve the anti-wear and anti-friction lubrication effect and solve the problem of MoS2 suspension.

But organic molybdenum is easy to oxidize and decompose to produce acidic substances, which will cause the engine oil to deteriorate early, and its chemical properties are not stable. Among them, the useful content of MoS2 is relatively low, and the effect lasts for a short time, so it needs to be supplemented frequently.

Another problem is that ester-based fully synthetic engine oils are very oily and can quickly precipitate various nano-scale suspended particles, including MoS2 suspended particles, and quickly destroy and remove the MoS2 film structure on the friction interface. In the test, it was found that the mixed ester fully synthetic motor oil will quickly sink various suspended particles to the bottom. Therefore, the long-term performance of ester fully synthetic motor oil includes the ability to quickly precipitate particles.

There will be a phenomenon where ester fully synthetic engine oil and solid lubricant compete for the friction interface. It is a fully synthetic ester motor oil, no matter what molybdenum product is used, this is also the functional conflict of the representative products of the two lubrication theories.

Therefore, the choice of MoS2 products should be based on the engine oil used in the car, as well as the focus, not just adding a certain lubricating additive.

Infomak is 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. If you are looking for MoS2 or organic molybdenum, please contact us.

Friction is a natural phenomenon that exists in the natural world. It is indispensable in people's daily production and life, but at the same time, it also brings unavoidable and unavoidable losses and harms. Friction not only consumes energy but also causes a lot of waste of resources. According to statistics, about one-third of the world's energy is consumed in resistance in various forms, and about 80% of machine parts fail early due to wear and tear.

Friction and wear mainly occur on the surface of friction parts. Adding nano oil additive to automotive lubricants is one of the important methods to reduce surface friction and wear. In recent years, the application of advanced carbon materials in the field of friction has received great attention. Especially with the discovery of rare earth graphite, the research on the application of carbon materials in tribology has entered a new upsurge.

1. What is graphene

Graphene is a new two-dimensional planar carbon material with atomic thickness. In a single-layer graphene crystal, carbon atoms participate in hybridization in the form of sp2, are connected by C-C covalent bonds, and are closely arranged into a two-dimensional honeycomb lattice structure with a six-membered ring the same as the carbon plane in three-dimensional graphite. The theory The thickness is 0.335nm, and the carbon six-membered ring periodic structure can be infinitely expanded in the same plane. It is a nanocrystalline material with macroscopic dimensions. The properties of graphene are closely related to the number of carbon layers. When the number of carbon atom layers of graphite flakes is less than 10, these graphite flakes exhibit different electronic characteristics from ordinary three-dimensional graphite crystals; and when the number of carbon layers exceeds ten layers at most, In addition, the properties of graphene are also closely related to the integrity of its crystal structure.

2 Graphene Lubricant

The friction between graphene layers is affected by various aspects such as stacking form, relative sliding direction, size, defects, layer spacing, and the number of layers. Studies have shown that graphene stacked in the form of incommensurate (lattice mismatch) sliding friction force along the path connecting incommensurate states will be smaller. It is found through an accurate calculation that the friction between graphene layers increases as the distance between the layers decreases. When the graphene layers are stacked in the form of AB, the friction will become more apparent as the distance between the layers increases. Besides, the shape, size, and introduction of the ink can cause frictional changes between graphene layers. The study found that as the number of graphene layers decreases, the friction and sliding friction between graphene layers gradually decreases. When the number of graphene layers reaches 2-3, the viscosity of the graphene layer disappears, and the average friction force is almost zero. Therefore, as a lubricant additive, compared with single-layer graphene, stacked multi-layer graphene is more conducive to the improvement of lubricating performance.

3 Application of graphene in industrial lubricants

Graphene is used as a modifier in industrial lubricants, and it should have good compatibility with base oils to ensure that it can form a uniform and stable dispersion system in industrial lubricants. The surface of graphene oxide contains a large amount of oxygen-containing functional groups, which makes it have excellent hydrophilic properties, so it is difficult to disperse in oil-soluble basic industrial lubricants, and it is prone to agglomeration. In addition, intact graphene has high chemical stability, weak interaction with other media, and great van der Waals gravitational force between layers. It is also difficult to stably disperse in base oils.  In order to effectively exert the lubricating properties of graphene lubricant additive, physical adsorption and chemical modification are mainly used to improve the uniform dispersibility of graphene in industrial lubricants, and uniform and stable graphene are configured with lubricating oil. Compared with the natural graphite sheet, the modification of graphene has a small volume and a thin layer structure, and it is easy to enter the friction contact surface, forming a continuous physical adsorption friction film, preventing direct contact with the surface of the friction pair, thereby modifying the graphene to expand the lubricating oil. It has a lower and more stable friction coefficient, and higher bearing wears resistance.

4 Conclusion

Graphene has shown application value in the field of high-performance lubricants due to its ultra-thin nano-sheet structure, excellent thermal conductivity, self-lubricating properties, mechanical properties, and good chemical stability. As a lubricant additive, it is easy to enter the friction interface and form a stable physical isolation film, which prevents direct contact with the friction surface, thereby enhancing the bearing capacity and extreme pressure and wear resistance of the lubricant. However, due to the large specific surface of graphene, the strong interaction between the carbon layers, the poor interaction with the base oil, and the possibility of agglomeration, it is difficult to stably disperse in the lubricant for a long time, which brings great disadvantage to its application. To better promote the application of graphene in the field of lubricants, more in-depth research work is needed in the following areas:

(1) Study on the compatibility between graphene and base oil. In-depth research on the surface modification technology of graphene, combined with actual industrial production, to achieve low-cost controllable modification of graphene and long-term stable dispersion in industrial lubricants.

(2) Tribological mechanism of graphene in industrial lubricants. An in-depth understanding of the physical and chemical changes that occur on the surface of different friction material materials during the friction process of graphene as a lubricant additive provides a more effective surface modification for graphene.

Infomak is 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. If you are looking for graphene, please contact us.

1. Overview of nanomaterials as oil additive

With the rapid development of science and technology in the 21st century, aerospace, high-speed rail, heavy machinery, and automobile industries have increasingly strict requirements on the service life and reliability of machinery. Mechanical equipment in high load and high speed, friction, and wear under high temperature and the extreme condition is relatively severe, urgent need high-performance lubricant oil. Therefore, prompting lubricant oil quality upgrading, development of excellent anti-wear performance lubricant oil is of significant value. The lubricant base oil in the oil quality is fundamental, oil additive quality and performance is the key to improve the quality of the world's major oil companies to develop new oil additive to improve the quality of the lubricant oil as a development focus.

 With the development of nanotechnology, scientific researchers have applied nanotechnology to the lubrication field. Nanomaterials are widely concerned as lubricant additives, which will give a massive boost to the development of high-performance and high-grade lubricating oil. Nanomaterials refer to the basic unit of materials in which at least one dimension of size is at the nanometer level, i.e., 1-100 nm range. They have the characteristics of small size, considerable surface energy, excellent anti-oxidation stability performance, and so on. Nanomaterials as lubricant additive, the most significant advantage is its tiny sizeable to enter the friction contact area, have good lubrication effect, in addition, the nanometer material has high temperature resistant nonvolatile or breakdown, not easy to react with other additives, satisfy the working condition of high load, high speed, high temperature and extreme inferior demanding conditions using, break through the traditional additives can limit the use of better protection of mechanical equipment.

2. Action mechanism and classification of nano material oil additive

The anti-wear and anti-friction mechanism of nanomaterials are different from that of traditional extreme pressure anti-wear additives. Conventional extreme pressure anti-wear additives contain active groups such as phosphorus, sulfur, and chlorine, which mainly rely on adsorption on friction surface or reaction with the metal surface to form chemical reaction film to achieve anti-wear and anti-friction effect. The action mechanism of nanomaterials mainly creates the following four types: rolling bearing effect, building a protective film, filling and repairing effect, and polishing effect. 

The rolling bearing fact is mainly that the ball, rod, and linear nanoparticles play a rolling and supporting role on the contact surface, changing the pure sliding friction into sliding and rolling resistance.The mechanism of forming protective film mainly depends on the deposition or adsorption of nanoparticles on the friction contact surface during the relative sliding process of the friction surface, and then the formation of physical protective film or interaction with the friction surface to form a chemical protective film to reduce the contact between the friction surface. When the contact surface is damaged, the friction surface will show scratches, ravines, or pits, and the surface roughness will increase. Nanoparticles will be deposited in the surface depression, and the friction contact surface will be leveled to reduce the severity, to achieve the anti-friction effect. The polishing effect mainly reduces the roughness by reducing the micro-convex body of the friction surface through the hard nanoparticles. When a nanometer material is used as a lubricant additive, in addition to the action of the nanometer material itself, the relationship between the nanometer material and the oil film should also be considered. Therefore, the lubrication mechanism should be considered comprehensively.

Infomak is 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. Contact us.

Graphite powder has a flaky crystal structure and excellent lubricity. And also has good electrical conductivity, thermal conductivity, anti-wear, extreme pressure, temperature resistance (temperature up to 450 ℃) and chemical stability, and other characteristics, so graphite powder is widely used in the machinery industry to make a variety of lubricants.

As lubricant, the graphite powder fine particles are evenly distributed in water, oil, or other media to form a stable gel. It can be directly applied to the parts that need lubrication by rubbing, dipping, or spraying. It can be added to various lubricant and used in combination. It is in contact with the metal surface, not only can form a robust lubricating film, but also improve the wetting performance of the metal surface to other lubricant oil, thereby maintaining long-term lubrication. Besides, because graphite powder exists as pleasant particles, it is easy to penetrate closely matching sliding or rotating parts and play a functional role in lubrication.

Graphite has a hexagonal crystal structure. Because the bonding force between the planes parallel to the base plane is weak, these crystals are natural to shear between the aircraft, that is, the friction is small, and they can support the load perpendicular to the base plane. It has the best properties as a dry lubricant.

Graphite powder, as dry lubricant, can be splash-lubricated in the form of dry powder. It can be used as an additive to make water and oil agents. It can also be combined with other materials to form a composite material for lubrication in transmission — wear-resistant parts.

Graphite powder lubricant can be divided into three types: water agent, colloidal graphite and micronized graphite powder, and its usage is as follows:

(1) Particle graphite powder

Apply directly to the rotating or sliding part, or mix it into the medium, such as kerosene, gasoline or light mineral oil, and phenolic resin or water glass, and spray or dip the part to be lubricated or covered. It depends on needs, generally 10% ~ 20%.

The graphite powder is put into the gearbox, and the powder flies up due to the stirring action of the gear and enters into various friction parts to form dust lubrication. Dust-type lubrication has been applied in the transmission and rear axle differential gearboxes of automobile chassis and has achieved absolute results.

Dust-type lubrication is relatively simple, as long as the solid lubricant powder is poured into the gearbox. During use, the solid lubricant film can be replenished continuously and automatically. And it can run for a long time without manual film protection, and maintenance is relatively simple.

(2) Oil lubricant

It can be directly added to the lubricating oil used in the original lubricating system and used in combination. The amount of use depends on the needs, generally about 2 ~ 10%.

When graphite powder is dispersed in lubricating oil, its lubricity depends not only on the lubricating properties of graphite but also on the performance of the lubricating oil. The test proves that the lubricating film composed of stone tools has the best lubricating performance if it contains 7 to 8 times the amount of lubricating oil of the stone tools. The particle size of graphite dispersed in lubricating oil should be comprehensively considered according to the requirements of use. Generally, 4 to 10 μm particles are often used, because the abrasive wear of 4 to 5 μm is the smallest, and the abrasive wear of 1 μm or less and 150 μm or more is the largest.

(3) Water agent

Graphite powder is directly added to water or emulsified, cutting fluid for use. The amount used depends on the needs, generally about 5-10%.

A suspension of graphite powder dispersed in water, oil, or solvents, commonly used as a lubricant release agent for metal thermoplastic pressure processing. As a friction modifier, graphite can increase the bearing capacity, wear resistance and heat resistance, etc., and has excellent high-temperature adhesion. Graphite milk made of graphite with an average particle size of 10 μm is applied to hot forging, which can be used above 500℃and can be used for forging to 800 ℃ for a short time.

For example, graphite milk is essential in the drawing of tungsten wires. The quality of graphite milk directly affects the quality of tungsten wire (consistent wire diameter and surface defects, etc.) and the wear of drawn diamond die holes. Before pulling, the graphite emulsion is coated on the surface of the drawn tungsten wire in advance and then passed through a heating furnace (the furnace temperature is between 500 and 850 ℃) at a speed of 30 to 70 μm/min. Then the drawing process is completed through a diamond die hole.

Infomak is 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. If you are looking for graphite powder, please contact us.

Friction is standard on two surfaces that are in contact with each other and move with each other. The mechanical motion resistance caused by friction will cause energy loss, as well as surface wear. In severe cases, it will even cause wear and tear of parts and components. At present, about one-third of the world's total energy is consumed by friction. To reduce friction and energy consumption, the world is vigorously developing various lubrication materials. Molybdenum-containing lubricating materials have excellent friction properties due to their ability to form complex Mo-containing lubricant films on friction surfaces and have been widely used worldwide. China is the country with the most significant molybdenum production, and molybdenum production ranks second in the world.

Among the molybdenum type lubricating materials, molybdenum disulfide (MoS2) was the earliest used. MoS2 is a solid lubricant. As the first generation of molybdenum-containing grease, its graphite-like layered structure and weak Van der Waals force between layers make it have excellent anti-friction performance. However, MoS2 is susceptible to precipitation in oil, so it cannot be used as an oil additive. The second and third generation of molybdenum-containing additives is oil-soluble organic molybdenum. This lubricant can dissolve evenly in the oil and stably disperse. It solves the problem of solubility in oil and becomes the ideal oil additive. Among them, the second generation is molybdenum dialkyl dithiophosphate (MoDDP). This organic molybdenum can significantly reduce friction and wear in lubricating oils, reduce wear by more than 50% in base oils, and also in refined oils. It can play a significant anti-wear effect. However, MoDDP contains phosphorus, which causes pollution to the environment and damages vehicle engines. To reduce the toxicity of phosphorus to engine catalysts, in the GF-4 specification issued by the International Committee for Standardization and Demonstration of Lubricants, the phosphorus content is required to be no more than 0.08%. The GF-5 introduced at the end of 2009 introduced a phosphorus volatility test Procedure III GB test puts forward higher requirements for phosphorus content.

For this reason, a third-generation molybdenum lubricant appeared, which was a Molybdenum dialkyl dithiocarbamate (MoDTC) obtained by dephosphorizing and introducing amino groups (NH2) based on the second generation. This organic molybdenum has the function of anti-oxidation and particular anti-corrosion ability while maintaining the anti-friction and anti-wear properties. It can cooperate with other functional additives such as QDDP, detergent, dispersant. Studies have shown that oil-soluble organic molybdenum, as a highly effective lubricant additive, has a better friction reduction effect than the traditional QDD additives. At the same time, with the development of industry and environmental requirements, organic molybdenum additives are also continuously developing towards higher performance and low phosphorus and sulfur.

A large number of experiments have confirmed that organic molybdenum as the friction-reducing anti-wearing agent has strong adaptability, is widely used, can be added to a variety of lubricants and greases, and can be used for various friction pairs. In addition to conventional mineral oils such as 150SN and liquid paraffin, the molybdenum oil additive has excellent performance in synthetic oils such as PAO, polyether oil, and various vegetable oils. In addition to being mainly used in motor oil, it can also be used in rolling fluid In the grease of the vehicle chassis. Organic molybdenum additives have friction-reducing effects on friction pairs of various materials, such as alloy steel, phosphor bronze, and different diamond-like coatings.

Infomak is 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. Contact us.

Lubricating oil by base oil and engine oil additives, commonly used lubricating oil lubricant additives according to its function, can be divided into detergent, dispersant, antioxidant, anti-wear agent and a friction modifier, etc. Engine oil additives can improve the performance of some of the internal combustion engine oil, such as clean dispersion properties, oxidation resistance, and anti-wear performance, etc., to meet the high load and high power internal combustion engine requirements for domestic combustion engine oil. Different engine oil additives in lubricating oil interactions, some interaction needed to make nature were strengthened, called a synergistic effect. Some interactions weaken the required properties and are called antagonistic impact.In the formulation of lubricating oil, the synergistic effect between additives should be made as far as possible to avoid the antagonistic impact, to reduce the number of additives, and improve the quality of lubricating oil.

Dialkyl disulfide generation of zinc phosphate (ZDDP) is a kind of multiple effect additive, anti-wear, antioxidant, corrosion resistance and performance, and it can effectively prevent engine bearing corrosion due to the high-temperature oxidation and make the oil viscosity increase, is one of the most commonly used lubricating oil lubricant additives, also is a kind of significant influence the properties of lubricating oil anti-wear lubricant additives.ZDDP oil additive is by far the most successful lubricant additives.ZDDP since the 1940 s to successful development, it has been as a kind of efficient lubricant additives used today.ZDDP oil additive is an indispensable additive in engine oils.

Other lubricant additives and ZDDP oil compound with action research

Organic molybdenum friction modifier has excellent anti-friction properties but also has specific anti-wear properties and antioxidant properties. The commonly used organic molybdenum friction modifier in internal combustion engine oil mainly includes molybdenum dialkyl dithiophosphate (MoDTP) and molybdenum dialkyl dithiocarbamate (MoDTC). The combined use of MoDTC and ZDDP results in a synergistic effect and significantly improved wear resistance. However, there is no apparent synergistic effect between MoDTP and ZDDP.

Different detergents and ZDDP have different effects on the wear resistance. Calcium sulfide alkylphenol and magnesium salicylate combined with ZDDP improved the wear resistance of oil. In contrast, calcium alkyl salicylate of medium alkali value and magnesium sulfonate of high alkali value combined with ZDDP decreased the wear resistance of oil. The dispersant of succinimide increased the chemical activity of ZDDP so that the surface reaction was more comfortable to carry out at the same temperature, and the reaction surface film generated at the same time had better temperature tolerance. The combination of succinimide and ZDDP improved the anti-wear performance of the oil. Motor oil with zinc-containing different types of dispersants had a different anti-wear performance. Oil containing polymer succinimide had the best anti-wear performance, followed by oil containing monosuccinimide, and oil-containing boride succinimide had the worst anti-wear performance. The combination of organic molybdenum anti-friction agent and ZDDP can improve the anti-wear property of oil. The improvement of wear resistance of organic molybdenum friction modifier and ZDDP compound was also related to their relevant content.

ZDDP oil is added as an antioxidant oil, so why are antioxidants added to lubricants?

With the rapid development of machinery industry and high-end equipment manufacturing industry, the use of ZDDP series and other antioxidant and anti-corrosion agents has been unable to meet the antioxidant performance requirements of high-end lubricants, and a variety of excellent shielding phenolic, amine, heterocyclic and other new ash-free antioxidant additives research and product applications develop rapidly.

What is the reason for the addition of antioxidants to lubricating oil?

Engines fueled by fuel oil, kerosene, gasoline, natural gas or human-made gas, liquefied gas, etc. must use lubricants (such as paraffin-based lubricants) to lubricate their moving parts. Lubricating oil in use to contact with air, all kinds of machinery and equipment will generate heat, make the friction parts operation temperature, besides, the apparatus of all types of metal material, such as copper, iron, etc. all can play a catalytic role in accelerating the oxidation of oil, is ultimately lubricating oil viscosity increased, generate acid corrosion of metal material, also makes a variety of carbon precipitation form or shape of asphalt material such as film block pipeline. All these changes have adversely affected the continued use of oil products and the regular operation of equipment. Therefore, oil is required to have a better antioxidant and anti-corrosion effect. The purpose of adding anti-oxygen and anti-corrosion additives to oil products is to inhibit the oxidation process of oil products, the catalytic effect of passivation metal on oxidation, and to prolong the use of oil products and protect the machine.

Infomak is 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. Contact us.

Molybdenum compound friction modifier occupies a significant place in numerous lubricating materials is due to its excellent tribological performance, can significantly improve the antiwear and friction-reducing lubricant, reducing friction and wear on the surface of the friction pair, show excellent high temperature oxidation resistance, and also can improve the mechanical efficiency of the engine, significantly improve vehicle fuel economy. The most commonly used molybdenum-containing compounds are: molybdenum disulfide (MoS2), oil-soluble dialkyl dithiocarbamate oxysulfide molybdenum (MoDTC) and dialkyl dithiophosphate oxysulfide molybdenum (MoDTP).With the rapid development of related industries ，such as the automobile industry, ship industry, and petroleum industry, the consumption of molybdenum products is rising rapidly, and the variety is increasing.

Molybdenum disulfide (MoS2), as grease lubricant used for over 70 years of history, is one of the most widely used stable oils.Natural MoS2 is a layered structure, and the S atom binding force between layers is weak, so it is easy to slide and shows a good anti-friction effect. On the other hand, the ionic bond between Mo and S atoms gives the MoS2 lubrication film a higher strength, which can prevent the lubrication film from penetrating the protruding part of the metal surface. However, S atom is exposed to the surface of the MoS2 crystal layer and has strong adhesion to the metal surface. The chemical properties of MoS2 are very stable, resistant to acid and radiation, and the decomposition temperature is 1000℃ under vacuum condition.MoS2 has outstanding substantial lubrication capability under heavy load with heating. In recent years, MoS2 has expanded from particular USES developed in the universe to the general industry. Annual consumption in the United States exceeds 2,000 tons and in Japan over 4,000 tons.

At present, organic molybdenum additive is widely used in industrially developed countries and emerging industrial nations. The annual consumption of organic molybdenum additive in the United States is about 2500 ~ 3000t, mainly used in internal combustion engine lubricating oil, turbine engine lubricating oil, and other fields. In all kinds of bearing oils for internal combustion engines produced in Japan, 0.5% ~ 1% organic molybdenum additive is usually added. The additive is supplied by Asahi chemical co., Japan's largest petroleum additive company. Besides, organic molybdenum additive is also used in antiwear oil, vacuum oil, bearing grease, guide oil, compressor oil, and gear oil. Besides the natural molybdenum produced in Japan, about 4% MoDTC and MoDTP are exported to Western Europe and Southeast Asian countries. Rhein Chemie Gruppe's MoDTP is widely used in Germany, the world's fourth-largest economy.

Infomak is 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. If you are looking for MoDTC or MoDTP, please contact us.

The primary function of lubricating oil is lubrication, heat dissipation, anti-wear, shock absorption, and cleaning. It can be said that lubricating oil is like the blood of the engine, so the service life of the engine also depends on the quality of the engine oil. Choose a suitable lubricant wisely. It is also an important thing, and today I will teach you how to choose a suitable engine oil. The engine oil ranges from the US $ 15-100, and there is a distinction between fully synthetic, semi-synthetic, and mineral oil. So what is the difference between them? How do we choose the right engine oil?

First, the cheapest mineral oil is around $ 15.

Most mineral oils are synthesized using class II base oils combined with lubricating oil additives.Class Ⅱ base oil: It is also called hydrogenated base oil using the hydrocracking process. 

Disadvantages: the molecules are arranged unevenly, and a little more impurities mean higher friction. It is not easy to dissolve with chemical additives and quickly produce chemical reactions, so there will not be too many frictions reducing oil additives, antioxidants, and pour point depressants. High-temperature protection can only rely on high viscosity to increase the oil film thickness to protect the engine! That is, the characteristic 10W40 high viscosity has an absolute increase in the engine running resistance. Poor fluidity during cold start results in loud noise, etc.! Therefore, the current mineral oil is gradually replaced by semi-synthetic; after all, the price is relatively close. In cold seasons, starting difficulties may occur, or cold-start wear may increase.

Secondly, a semi-synthetic engine oil around $ 30

It is a combination of mineral oil and class III base oil. Compared with mineral oil, semi-synthetic class III base oil has less purity and impurities. It adopts high hydrocracking or hydroisomerization process to filter out the mineral oil. Impurities, prevent accelerated oxidation, rearrange the molecules inside. This also means that the friction is smaller, and it can also make differential oil additive better compatible with the base oil. After adding anti-friction additives, it can also achieve low viscosity and high protection under high-temperature conditions, which is why turbines are required. For reasons above semi-synthesis, the turbine temperature of thousands of degrees must also rely on engine oil to dissipate heat. Semi-synthesis is treated, and the synthetic fluidity is higher. Adding a small amount of the best oil additive can also make the oil film difficult to crack under high pressure and encounter high-temperature oxidation. And more stable. Of course, semi-synthetic is still semi-synthetic, after all. Due to the base oil, the long-term performance and stability are not the best.

Finally, fully synthetic engine oil of around $ 100

At present, most of the fully synthetic engine oils are the type mentioned above III base oils combined with the four types of base oils. The addition of the four types of oils makes up the low-temperature fluidity and high-temperature protection of the type III oils due to the addition of the four kinds of insufficient oils that can be said to be an enhanced version of semi-synthetic engine oil in all aspects. Fully synthetic engine oil has higher fluidity at high temperatures and low temperatures. It has added more expensive additives: such as ZDDP (best zinc oil additive), moly additive (MoS2, MoDTC, and MoDTP), hexagonal boron nitride, titanium alloy elements, WS2, lipids, etc. Most of these elements have absolute adsorption on metal, and the friction resistance is meager, which can reduce the engine running strength and reduce the wear between the metal of the engine. This is also a part of the owners who can feel the open after switching from semi-synthetic to fully synthetic. One of the reasons why it feels lighter.

So how to choose the right engine oil?

First, check the maintenance manual of your car. The required labels and engine oil specifications, such as the Japanese American cars require the GF-5 standard, the German vehicles require the A3B4 and C3 measures, and the French system requires the A5B5. Strict or choose a logo certified by your car manufacturer! As for the choice of fully synthetic or semi-synthetic or even mineral oil, the most expensive engine oil currently is double-fat or multi-fat engine oil. It is developed for most racing cars and streetcars, but it has poor long-term performance, is easy to emulsify in water, and is not suitable for daily use. Use. If there is frequent congestion, long-term low-speed crawling, or poor road conditions, choosing a semi-synthetic oil change every six months can keep the engine clean, and it can also ensure that the engine oil is always in the best state.

Fully synthetic engine oil has a higher price. Although it is long-lasting and protective, some gasoline is natural to burn incompletely under adverse road conditions. The impurities left by combustion will be mixed into the engine oil. This will still accelerate the deterioration of the engine oil, and the protection and long-term performance will gradually deteriorate. This is also the reason why some fully synthetic engine oils are marked for replacement within eight months. So if the road conditions are right or if you run a high-speed for a long time, you can run more than 10,000 kilometers for half a year, or thousands of kilometers a year. Choosing a full-synthesis can save a certain amount of cost and time. As for the gap between power and fuel consumption, for some good-powered models, the difference between semi-synthesis and full-synthesis is not too noticeable.

Infomak is 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. Contact us.