17results about How to "Improve extreme pressure performance" patented technology

The invention relates to the technical field of lubricating oil, in particular to anti-wear and anti-attrition composite lubricating oil and a preparation method and application thereof. The anti-wear and anti-attrition composite lubricating oil is prepared from the following raw materials: base oil, an anti-wear reagent at extreme pressure, a preservative, an antioxidant, a viscosity index improver and a dispersing agent, the extreme pressure anti-wear agent is obtained by modifying layered molybdenum oxide with metal micelles formed by dodecylamine and wet and then carrying out hydrothermal treatment and vulcanization. The prepared anti-wear and anti-attrition composite lubricating oil has excellent anti-wear and anti-attrition effects and extreme pressure properties, is suitable for the lubrication requirements under high load and harsh conditions, and has a wide application prospect.

The invention relates to the technical field of lubrication, in particular to heavy-load open gear graphene lubricating grease and a preparation method thereof. The preparation method comprises the following steps: grafting octadecylamine and an ionic liquid to the surface of graphene, reacting with modified jatropha curcas oil to obtain modified graphene, and adding PAO, alkyl naphthalene oil, fumed silica and an additive to obtain the heavy-load open gear graphene lubricating grease. Graphene is modified and is matched with nano tungsten disulfide, so that the lubricating grease is good in lubrication and wear resistance; the synthesized anionic salt is used for modifying graphene, so that the obtained lubricating grease is good in extreme pressure property; graphene oxide is obtained by modifying jatropha curcas oil, the specific surface area of fumed silica and the pH value of a system are further controlled, and finally, the lubricating grease can meet the actual high-temperature use requirement; by changing the dosage of each component raw material and adding the raw materials in batches, the obtained lubricating grease has good low-temperature-resistant effect and oxidation stability, low oil separation amount and small evaporation loss.

The invention relates to the technical field of lubricating oil, in particular to a high-performance high-temperature chain oil composition and a preparation method thereof. The high-temperature chain oil composition prepared by the invention overcomes the problems of poor extreme pressure wear resistance, poor stability in use in high-temperature and low-temperature environments, poor oxidation resistance, high evaporation loss and easy coking of chain oil in the use process. The base oil, the antioxidant and the anti-wear agent are prepared and matched with other auxiliaries to obtain the high-temperature chain oil composition. The anti-wear agent is prepared, and the obtained composition is good in extreme pressure wear resistance. Alkyl naphthalene base oil is prepared by using a supported catalyst, the alkyl naphthalene base oil, the prepared dipentaerythritol triphenyl sulfide ester base oil and low-viscosity poly-alpha-olefin are jointly used as base oil, and the chain oil composition is high in kinematic viscosity index and good in high temperature resistance and low temperature resistance. By using the prepared antioxidant and changing the component dosage of the chain oil composition, the composition is good in antioxidant effect, small in evaporation loss and not easy to generate precipitates.

This invention discloses a high-wear-resistant lubricating oil and its preparation method, relating to the field of lubricating oil technology. The high-wear-resistant lubricating oil, by weight, comprises: 85-92 parts base oil, 3-5 parts shape memory polymer, 2-4 parts metal-based shape memory alloy, 0.05-0.1 parts functionalized graphene, 0.5-1 parts self-cleaning additive, 5-8 parts nickel-titanium-niobium magneto-controlled shape memory alloy, and 2-3 parts phase change heat storage microcapsules. This invention, by compounding the base oil with the shape memory polymer, metal-based shape memory alloy, functionalized graphene, self-cleaning additive, nickel-titanium-niobium magneto-controlled shape memory alloy, and phase change heat storage microcapsules in a specific ratio, compared with existing technologies, can improve the wear resistance life of the lubricating oil under different load and temperature conditions. Therefore, it solves the problem that traditional lubricating oils have large performance fluctuations under varying operating conditions and are difficult to meet lubrication requirements under high and low temperatures and different load conditions.

The application provides a kind of vehicle grease composition and its preparation method.The vehicle grease composition comprises the following components by weight: base oil 60-92 parts, thickener 8-40 parts, friction modifier additive 1-10 parts;The thickener is selected from one or more of polyurea soap powder, composite calcium sulfonate soap powder and amide sodium soap powder.The vehicle grease composition provided by the application can greatly reduce the dependence of vehicle grease on lithium resources, while the comprehensive performance is excellent, meets the lubrication demand of commercial vehicle hub bearing, and the process is stable and feasible.

The invention discloses an antifriction agent for a steel rail and a preparation method thereof, the steel rail antifriction agent provided by the scheme abandons an original form taking base oil as a main body and replaces a form taking lubricating grease (the lubricating grease is between 0 # and 000 #) as a main body, and various additives are added, so that various requirements in use of the steel rail are met. On the basis of composite calcium sulfonate lubricating grease, molybdenum disulfide, oxidized paraffin, a tackifier, an antioxidant, an anti-rust agent, an anti-wear reagent at extreme pressure and the like are added, so that the anti-friction agent with excellent anti-wear property at extreme pressure, adhesion, oxidation and rust resistance and stability is obtained, and the problems of friction and abrasion in the running process of a steel rail are well solved.

The lubricant composition provided by the invention is characterized in that the lubricant composition is composed of isohexadecanol, lactic acid, isopropanolamine, sulfamic acid and water, and the molar ratio of isohexadecanol to lactic acid is 1: (1-1.2); the weight ratio of the isopropanolamine is 10-20% of the sum of the isohexadecanol and the lactic acid, the weight ratio of the sulfamic acid is 1-2% of the sum of the isohexadecanol and the lactic acid, and the weight of the water is 7-10 times that of the sulfamic acid. The lubricant composition prepared by the invention has better lubricity, good water solubility, good rust resistance and hard water resistance, and can perfectly solve the cooling and lubricating effects when being used for minimal quantity lubrication. The invention also provides a trace lubricant containing the lubricant composition. The trace lubricant is prepared from the following components: the lubricant composition, oleic diethanolamide, urea phosphate, polyvinyl alcohol and water.

The application relates to the field of lubricating oil, and more particularly to a novel wind power gear oil compound and a preparation method thereof. The novel wind power gear oil compound comprises, in mass parts, at least the following raw materials: a base agent 60-80 parts, an oily agent 1-8 parts, an antioxidant 3-6 parts, an anti-wear agent 3-8 parts and an improver 4-10 parts. The application provides a novel wind power gear oil compound which can be directly used as a wind power gear lubricating oil or used as an additive of other lubricating oil systems, can effectively enhance the extreme pressure resistance, corrosion and rust resistance, low-temperature flow and stability of the lubricating oil under the guarantee of excellent lubricating wear resistance and weather resistance and aging resistance of the lubricating oil, and meets the performance requirements of more complex wind power speed-up gear boxes.

The invention provides an environment-friendly lubricant composition which is characterized by comprising high fructose corn syrup, palmitic acid, monoethanolamine, sulfamic acid and water, and the molar ratio of the high fructose corn syrup to the palmitic acid is 1: (1-2). The weight ratio of the monoethanolamine is 10-15% of the sum of the high fructose corn syrup and the palmitic acid, the weight ratio of the sulfamic acid is 0.5-1% of the sum of the high fructose corn syrup and the palmitic acid, and the weight of the water is 7-10 times that of the sulfamic acid. The environment-friendly lubricant composition prepared by adopting the preparation method disclosed by the invention has better lubricity, good water solubility, good anti-rust performance and good hard water resistance, and can perfectly solve the cooling and lubricating effects when being used for minimum quantity lubrication. The invention also provides an environment-friendly trace lubricant containing the environment-friendly lubricant composition. The environment-friendly trace lubricant is prepared from the following components: the environment-friendly lubricant composition, oleoyl sarcosine, urea phosphate, polyvinyl alcohol and water.

The invention discloses a lubricating oil composition with low friction and high extreme pressure properties and application of the lubricating oil composition. The lubricating oil composition is characterized by comprising lubricating base oil, ZDDP, carboxylic acid end group beta-diketone and aromatic ester, the viscosity grade of the lubricating base oil is between SAE 20 and SAE 50, and the lubricating base oil accounts for 90-98% of the total mass of the lubricating oil composition; the mass ratio of the ZDDP to the carboxylic acid-terminated beta-diketone to the aromatic ester is 1: (1-2): (1-4), and the total mass of the three is 2-10% of the total mass of the lubricating oil composition; the molecular structure of the beta-diketone is redesigned, the molecular polarity of the beta-diketone is adjusted to increase the chemical adsorption capacity of the beta-diketone, and meanwhile, the adaptability of the beta-diketone in the lubricating base oil is improved by using the aromatic ester, so that the lubricating oil can have excellent properties of low friction and high extreme pressure.

The invention relates to the technical field of lubricating materials, and provides application of dialkyl chain phosphate as a gelator or a lubricating oil additive, a supramolecular gel lubricant and a lubricating oil composition. According to the invention, the dialkyl chain phosphate is used as a gelator or a lubricating oil additive; phosphate ester molecules with relatively short alkyl chains can play a role of a lubricating oil additive, so that the antifriction and antiwear properties and the bearing capacity of the lubricating oil are enhanced; phosphate molecules with long alkyl chains can play a role of a gelator and prevent lubricating oil from creeping, volatilizing or leaking on the surfaces of parts, and meanwhile the obtained supramolecular gel lubricant has good thermal stability and mechanical stability and is high in antifriction and antiwear performance and bearing capacity. In conclusion, the dialkyl chain phosphate provided by the invention is expected to replace the existing lubricating additive, has important significance for efficient utilization of resources, and has potential application value for prolonging the service life of equipment.

The invention discloses a nanometer core-shell-satellite structure CS (at) PDA / metal compound composite lubricating additive and a preparation method and application thereof, and belongs to the technical field of nanometer materials, and the preparation method comprises the steps that the surface of nanometer core structure CS particles is evenly coated with a PDA layer through the self-agglutination-adhesion characteristic of dopamine, and a CS (at) PDA intermediate of a core-shell structure is formed; and ZnO nanoparticles or LDH nanosheets grow in situ on the surface of the CS (at) PDA intermediate through a hydrothermal synthesis and heat treatment process to obtain the CS (at) PDA / metal compound composite lubricant additive with the nano core-shell-satellite structure, the additive has good antifriction and antiwear effects, and after the additive is mixed with base oil to prepare mixed oil, the antifriction and antiwear properties of the material can be remarkably improved, and the service life of the material is prolonged. Meanwhile, the preparation process is simple, and the material stability is high.

The invention discloses pentaerythritol tetra (6-naphthyl hexanoic acid) ester and a preparation method and application thereof, the preparation method adopts two-step reaction of alkylation and esterification, the first step is that naphthalene and 5-hexenoic acid are subjected to alkylation reaction to generate 6-(1-naphthyl) hexanoic acid; and 2, carrying out a reaction on the 6-(1-naphthyl) hexanoic acid and thionyl chloride, and carrying out an esterification reaction with pentaerythritol to finally obtain the oily pentaerythritol tetra (6-naphthyl hexanoic acid) ester. The prepared pentaerythritol tetra (6-naphthyl hexanoate) ester has a structure with a symmetric four-arm core, a flexible alkyl chain and a rigid naphthalene end group, is shown as a formula (I), is used for lubrication and sealing of various equipment, and has the advantages of oxidation resistance, high and low temperature resistance, extreme pressure resistance, good lubrication and sealing performance and the like.

The invention relates to the technical field of oil for gear processing, and discloses oil for gear processing and a preparation method thereof. Comprising the following operation steps: step 1, heating and stirring base oil to obtain pre-dissolved base oil for later use; heating and stirring the high-molecular oil-soluble polymer to obtain a pre-dissolved high-molecular oil-soluble polymer for later use; 2, stirring and circulating the pre-dissolved base oil, adding the pre-dissolved high-molecular oil-soluble polymer at the constant temperature of 50 + / -5 DEG C, stirring and circulating until a homogeneous phase, then adding the pre-dissolved base oil, and heating and stirring at the temperature of 60 + / -5 DEG C to obtain prefabricated processing oil; 3, every 10 minutes of stirring circulation, trimethylolpropane oleate, sulfurized fatty acid ester, sulfurized olefin, a composite additive, a nonionic demulsifier and a silicon-free defoaming agent are sequentially added into the prefabricated processing oil, the pre-dissolved base oil is added, and the gear processing oil is obtained.

The application relates to the technical field of lubricating grease, in particular to long-life anti-wear lubricating grease and application of the lubricating grease to automobile motor bearings. The lubricating grease is prepared from raw materials including a composite calcium sulfonate thickener 14-22%, high-alkaline-value synthetic calcium sulfonate 1.5-3.5%, surface-modified nano calcium carbonate 0.3-1.2%, a first anti-wear component 1.2-2.8%, a second anti-wear component 1.5-3.2%, a third anti-wear component 2-4%, a microcapsule component 1-2.5% and a balance of a composite base oil; the first anti-wear component includes modified nano molybdenum disulfide; the second anti-wear component includes lanthanum-doped nano cerium dioxide; the third anti-wear component includes a mixture of molybdenum dialkyldithiocarbamate, sulfided isobutylene and phosphoric acid trimethylphenyl ester; and the composite base oil is a ternary mixture of poly-alpha-olefin, alkylated naphthalene and partial benzene triacid ester. The lubricating grease has long life and anti-wear performance.

The invention relates to the technical field of lubricating grease, in particular to a lubricating grease composition containing organic bismuth and organic copper and application of the lubricating grease composition in a constant velocity universal joint. The lubricating grease composition includes at least one base oil, at least one organobismuth, at least one organocopper, at least one organomolybdenum, and at least one thickener. Experimental research finds that organic bismuth and organic copper generate a synergistic effect in the lubricating grease, in the synergistic effect, the organic bismuth can improve the extreme pressure resistance of the universal joint lubricating grease, and the organic copper can provide a repair effect on a metal surface, so that the NVH (Noise Vibration and Harshness) performance of a universal joint is improved, the transmission efficiency is improved, and the service life of the universal joint is prolonged.

The invention discloses high-temperature-resistant extreme-pressure lubricating oil and a preparation method thereof, and relates to the technical field of lubricating materials. According to the invention, 1, 1, 3, 3-tetrachloro-1, 3-diphenyl disiloxane and methyl trifluoropropyl cyclotrisiloxane are used as raw materials to prepare the fluorosilicone oil, and the fluorosilicone oil contains a plurality of benzene rings and chlorine atoms, so that the high temperature resistance and stability of the fluorosilicone oil can be improved, meanwhile, a more stable lubricating film can be formed on a friction surface, and the extreme pressure resistance of the fluorosilicone oil is improved; then bentonite and a tungsten diselenide precursor solution are mixed, tungsten diselenide is directly prepared on the surface of bentonite through an ultrasonic pyrolysis method, tungsten diselenide is better combined with active sites on the surface of bentonite through ultrasonic waves, the loading amount of tungsten diselenide is increased, aggregation and loss of the tungsten diselenide additive in the using process are reduced, and the stability of the tungsten diselenide additive is improved. The service life of the tungsten diselenide additive is prolonged, and the high temperature resistance and the extreme pressure resistance of the system are further improved. The lubricating oil prepared by the invention has the effects of high temperature resistance and extreme pressure resistance.