26 results about "Extreme pressure additive" patented technology

An environmentally friendly metal cutting oil with high load-bearing and high wear resistance, belonging to the technical field of metal cutting fluids. The cutting fluid is composed of diisooctyl sebacate, phosphate amine salt extreme pressure additives, borate series additives and sulfurized extreme pressure additives, the sulfurized extreme pressure additives are sulfurized fatty acid esters and dialkyl pentasulfide (Rc2540). The load-bearing capacity (Pb) of the cutting oil can reach more than 920N, and the low-load long-wear wear spot diameter (Db) can be less than 0.35 mm.

The invention discloses an optical glass grinding and thinning cutting fluid and a preparation method thereof. Comprising the following materials in percentage by weight: 40%-60% of a basic solution, 2%-4% of an extreme pressure additive, 1%-2% of polyethylene glycol, 0.1%-0.3% of nano silicon dioxide, 0.1%-0.5% of polycarboxylate, 0.1%-0.2% of polyether modified organic silicon, 0.3%-1% of an antirust agent, 0.1%-0.4% of a pH regulator, 2%-4% of a solvent, 0.5%-1% of an emulsifier and the balance of deionized water. By compounding the pentaerythritol ester, the light hydrogenated naphthenic oil and the PAO4, the cutting fluid has the transparency of esters, the cooling property of mineral oil and the viscosity stability of the PAO, meets the transparency required by the optical glass grinding and thinning cutting fluid, ensures long-term dispersion of particles by utilizing double-coated nano silicon dioxide, avoids agglomeration and scattered light, and improves the optical glass grinding and thinning cutting fluid. And the high specific surface area and thermal conductivity of the nano silicon dioxide promote the heat to be quickly conducted out of the cutting area.

The invention discloses a high-load bearing lubricant for a Morgan rolling mill and a preparation method of the high-load bearing lubricant. The lubricant comprises synthetic base oil, modified titanium-silicon composite particles, slow-release antioxidant microcapsules, an organic molybdenum anti-wear agent, an extreme pressure additive, an environment-friendly ternary antirust agent and a viscosity index improver. Modified nanoparticles are prepared through atomization melting and solvent heat treatment, antioxidant microcapsules are prepared through a polyethylene glycol coating technology, and then the composite lubricating system is formed through high-temperature and high-shear mixing. The lubricant disclosed by the invention has excellent extreme pressure anti-wear performance, thermal oxidation stability, anti-rust and anti-corrosion capability and good oil-water separation performance, and is suitable for a rolling mill bearing lubricating system under severe working conditions of high load, high temperature, high humidity and the like. The lubricant can effectively prolong the service life of the bearing and reduce the operation and maintenance cost of equipment, and has a good industrial application prospect.

The invention belongs to the technical field of self-repairing lubricating oil, and particularly relates to a self-repairing lubricating composition, a preparation method and engine oil containing the composition. The lubricating composition is prepared from the following components in percentage by mass: 6.0 to 12.0 percent of dynamic crosslinking type polyether ester elastomer, 3.0 to 6.0 percent of thermally induced release type microcapsule, 1.0 to 4.0 percent of graphene coated molybdenum disulfide compound, 2.0 to 5.0 percent of fluorine-containing polyether modified silicone oil, 0.5 to 1.5 percent of polyamine polymer derivative, 0.2 to 0.8 percent of iron series organic complex, 0.8 to 2.5 percent of phosphate ester extreme pressure additive, 0.5 to 2.0 percent of esterified polyether type dispersion stabilizer and the balance of water. 0.2-1.2% of aniline and phenol composite antioxidant component, and the balance of synthetic base oil. The preparation method comprises the steps of staged heating, shearing dispersion and constant-temperature stirring. The lubricating composition disclosed by the invention has good wear resistance, oxidation resistance and stable film-forming performance, is suitable for a lubricating system in a high-temperature and high-shear environment, and meets the requirements of green and low-carbon development.

A grease composition includes a base oil, a thickener, and an extreme pressure additive. The base oil contains trimellitate ester and poly-α-olefin. A proportion of the trimellitate ester to a total amount of the trimellitate ester and the poly-α-olefin is 10.0 mass % or more and 60.0 mass % or less. The thickener contains lithium 12-hydroxystearate and lithium stearate. A proportion of the lithium 12-hydroxystearate to a total amount of the lithium 12-hydroxystearate and the lithium stearate is 5.0 mass % or more and 95.0 mass % or less. The extreme pressure additive contains molybdenum dialkyl dithiocarbamate. A proportion of the molybdenum dialkyl dithiocarbamate to a total amount of the trimellitate ester, the poly-a-olefin, the lithium 12-hydroxystearate, the lithium stearate, and the molybdenum dialkyl dithiocarbamate is 0.6 mass % or more and 16.0 mass % or less.

In one or more embodiments, this application relates to tribotechnical additive and lubricant compositions based on self-assembled carbon nanoarchitectonics derived through nanoscale modifications of organosilane-functionalized nanocarbon with one or multiple combinations of organo-molybdenum, organo-boron, organo-sulfur, organo-phosphorus, and heterocyclic compounds. The novel lubricant is characterized by having a composition comprising (A) one or more types of the novel additive compositions, (B) Base oil / / lubricant, and optionally (C) one or more additives selected from the group including antioxidants, dispersants, detergents, anti-wear additives, extreme pressure additives, friction modifiers, viscosity index modifiers, seal swell additives, defoamers, pour point depressants and corrosion / rust inhibitors. The selfassembled carbon nanoarchitectonics is expected to enhance the surface chemistry, antiwear, antifriction, antioxidancy, electrothermal, and corrosion inhibiting characteristics of the tribotechnical compositions for formulating high-quality solutions in a wide range of applications.

An electric vehicle lubricant formulation is provided that includes Group II to V base oils, an oxidation inhibitor, and an antiwear additive or extreme pressure additive. Compared with commercially available products, the formula has excellent copper corrosivity and extreme pressure property at high temperature, and is extremely low in conductivity and waste oil foam.

A lubricant composition with excellent high-temperature operability, the lubricant composition including: 85 wt % to 95 wt % of a polyalkylene glycol base oil; 1 wt % to 5 wt % of an antioxidant; 1 wt % to 5 wt % of a first anti-wear extreme-pressure additive; and 1 wt % to 5 wt % of a second anti-wear extreme-pressure additive, wherein the antioxidant includes an amine-based compound, the first anti-wear extreme-pressure additive includes an amine salt of phosphate, and the second anti-wear extreme-pressure additive includes a nano-diamond dispersion.

The present invention provides a silicone grease composition which contains zinc dialkyldithiocarbamate (B) as an extreme pressure additive in a silicone oil (A) and substantially does not contain zinc dialkyldithiophosphate (BX), and thus has excellent friction characteristics and wear characteristics.

The invention discloses a preparation method of grinding oil with low VOC (volatile organic compound) content, which specifically comprises the following steps: adding base oil and a solubilizer into a blending kettle according to a formula ratio, stirring and heating to 50-60 DEG C, adding an antioxidant, an extreme pressure additive, an oil mist inhibitor, a corrosion inhibitor and a defoaming agent according to a formula ratio, and stirring until all the materials are dissolved; pumping the obtained material into a vacuum degassing kettle, sealing a tank body, and starting heating, a circulating pump and a vacuum pump to carry out degassing treatment until the pressure in the degassing kettle is constant; and degassing to obtain the degassed grinding oil. The grinding oil prepared by the method disclosed by the invention has low VOC content and also has good lubricating processing performance; tests prove that the VOC content of the grinding oil is about 80% lower than that of a product with the same viscosity.

The invention discloses a glass cutting fluid containing a gemini quaternary ammonium salt settling agent, and belongs to the technical field of glass processing. The glass cutting fluid comprises the following components in percentage by weight: 5-20% of an extreme pressure additive, 6-15% of a gemini quaternary ammonium salt settling agent, 5-20% of polyol and 45-85% of deionized water. According to the glass cutting fluid containing the gemini quaternary ammonium salt settling agent, the gemini quaternary ammonium salt settling agent is prepared through synthesis, glass powder, solid particles, metal ions and flocculent sediments are rapidly settled, suspension and caking are avoided, scratches to the surface of optical glass are reduced, the sterilization performance is good, bacterium breeding can be effectively inhibited, and the settling life of the glass cutting fluid is prolonged; and the cutting fluid is non-toxic, does not hurt the skin, and is green and environment-friendly.

The invention relates to a water-soluble grinding fluid for ultra-precision grinding of a steel ball and a preparation method of the water-soluble grinding fluid, and belongs to the technical field of metal working fluids. The grinding fluid comprises the following components in percentage by mass: 60%-80% of ion exchange water, 1%-5% of sodium nitrite, 5%-10% of fatty acid salt, 1%-5% of a lubricating additive, 1%-15% of a surfactant and 0.01%-0.5% of a defoaming agent. The fatty acid salt is preferably an alkali metal salt, an alkaline earth metal salt, an amine salt or an ammonium salt of saturated or unsaturated fatty acid with 6-30 carbon atoms; the lubricating additive comprises an ester type lubricant and an extreme pressure additive; and the surfactant is a nonionic or anionic surfactant with an HLB (Hydrophile-Lipophile Balance) value of 3-20. The grinding fluid has excellent lubricity, cooling property, corrosion resistance and foam inhibition function, is environment-friendly, low in toxicity and easy to clean, can replace traditional water-insoluble grinding oil, and is suitable for ultra-precision grinding of steel balls. The preparation method is simple, comprises the steps of component mixing and homogenizing, and is easy for industrial production.

A lubricant composition with excellent high-temperature operability, the lubricant composition including: 85 wt % to 95 wt % of a polyalkylene glycol base oil; 1 wt % to 5 wt % of an antioxidant; 1 wt % to 5 wt % of a first anti-wear extreme-pressure additive; and 1 wt % to 5 wt % of a second anti-wear extreme-pressure additive, wherein the antioxidant includes an amine-based compound, the first anti-wear extreme-pressure additive includes an amine salt of phosphate, and the second anti-wear extreme-pressure additive includes a nano-diamond dispersion.

The invention relates to the technical field of lubricating grease, in particular to low-friction Hanktolite lubricating grease and a preparation method thereof. The lubricating grease comprises the following components based on the total weight of the composition: 55-90% of base oil; 10%-30% of a thickening agent; 1%-15% of an extreme pressure additive; 0%-5% of an active dispersant; the base oil is one or a mixture of more of ionic liquid, a deep eutectic solvent and polyethylene glycol; the thickening agent is a quaternary ammonium salt and quaternary phosphonium salt modified Hanktolite thickening agent. Aiming at the problems of poor extreme pressure anti-wear performance and insufficient tribological performance of the traditional Hanktolite lubricating grease under a high-load condition, the invention provides the lubricating grease prepared from novel base oil such as an organically modified Hanktolite thickening agent, a thickening ionic liquid, a deep eutectic solvent and polyethylene glycol.

The present invention provides a lubricating oil composition comprising at least 80% by weight, based on the total weight of the lubricating oil composition, of a base oil wherein the base oil is selected from the group consisting of Group II base oils, Group III base oils, and Fischer-Tropsch derived base oils, and mixtures thereof; one or more additives, other than citric acid, selected from the group consisting of antiwear additives, rust inhibitors and corrosion inhibitors, dispersants, extreme pressure additives, friction modifiers, viscosity index improvers, pour point depressants, antioxidants; and one or more of citric acid and derivatives thereof. The invention also provides the use of an additive selected from one or more of citric acid and derivatives thereof in a lubricating oil composition comprising at least 80% by weight, based on the total weight of the lubricating oil composition, of a base oil for improving the air release properties of said lubricating oil composition as measured by ASTM D3427, wherein the base oil is selected from the group consisting of Group II base oils, Group III base oils and Fischer-Tropsch derived base oils and mixtures thereof; and one or more additives, other than citric acid, selected from the group consisting of antiwear additives, rust inhibitors and corrosion inhibitors, dispersants, extreme pressure additives, friction modifiers, viscosity index improvers, pour point depressants, antioxidants.

PROBLEM TO BE SOLVED: To provide a grease composition which exhibits excellent friction and wear resistance characteristics and realizes a long service life even in high-temperature and high-speed-rotation environments. SOLUTION: A grease composition containing a synthetic hydrocarbon oil, a urea-based thickener, and an extreme pressure additive, in which the extreme pressure additive is at least one selected from the group consisting of alkenyl acid phosphates and trialkyl trithiophosphites and the grease composition is free from metal stearates and amide compounds.

The invention provides a halogen-free sulfur-containing eutectic solvent lubricant as well as a preparation method and application thereof, and belongs to the technical field of material lubrication and tribology engineering. The halogen-free sulfur-containing eutecticevaporate solvent lubricant comprises the following components in percentage by mole: 25%-80% of a sulfur-containing hydrogen bond donor and 20%-75% of a halogen-free hydrogen bond acceptor. Based on the characteristic that the components of the eutectic solvent are adjustable, halogen-free hydrogen bond receptors (including citric acid quaternary ammonium salt, proline and polyethylene glycol) are selected, the corrosion effect of halogen on a friction interface is avoided, meanwhile, a sulfur-containing compound is used as a hydrogen bond donor, and the friction coefficient is improved. Due to introduction of sulfur, the halogen-free sulfur-containing eutectic solvent lubricant has good extreme pressure lubrication performance, an extra sulfur-containing extreme pressure additive does not need to be used, a hydrogen bond network is formed by controlling the proportion of all the components, and the halogen-free sulfur-containing eutectic solvent lubricant is obtained and has good extreme pressure lubrication and anti-wear effects in the friction process.

The invention relates to the technical field of gear oil, in particular to a long-life electric drive system reduction gearbox oil composition and a preparation method thereof. The composition comprises the following components in parts by weight: (A) 84.0-99.2 parts of at least one oxygen-containing synthetic hydrocarbon base liquid; (B) 0.2-5.0 parts of at least one extreme pressure additive; (C) 0.1-2.0 parts of at least one anti-wear additive; (D) 0.1-1.0 part of at least one friction improving additive; (E) 0.2-3.0 parts of at least one antioxidant additive; (F) 0.2-5.0 parts of at least one cleaning and dispersing additive. The reduction gearbox oil composition disclosed by the invention has excellent copper-containing material protection performance, heat conduction performance, insulating performance, extreme pressure anti-wear performance, friction improvement performance and thermal oxidation stability; and the cooling requirements of motors and electronic devices of new energy automobiles and the lubricating requirements of reduction gearboxes and differential mechanisms at present and in future can be met.

A lubricant composition for a brake system having excellent high-temperature operability, the lubricant composition comprising: 85 wt% to 95 wt% of a polyalkylene glycol base oil; 1% to 5% by weight of an antioxidant; 1% to 5% by weight of a first antiwear extreme pressure additive; and 1% to 5% by weight of a second anti-wear extreme pressure additive wherein the antioxidant comprises an amine compound, the first anti-wear extreme pressure additive comprises an amine salt of a phosphate ester, and the second anti-wear extreme pressure additive comprises a nanodiamond dispersion.

The invention discloses lubricating grease as well as a preparation method and application thereof, and the lubricating grease comprises the following components in percentage by weight: 1.5-2.5% of an organic friction improver, 0.5-1.0% of an ashless organic friction improver, 0.5-1.0% of an anti-wear agent, 0.8-1.2% of an extreme pressure additive, 7.0-8.0% of C12-C18 hydroxy fatty acid, 2.0-2.5% of C6-C12 dicarboxylic acid, 3.0-3.5% of oil-based lithium hydroxide, 0.1-0.2% of alkaline earth metal hydroxide, 10-20% of V-type base oil and the balance of base oil, and the balance of IV type base oil. According to the invention, the friction coefficient can be effectively reduced, so that the robot lubricating grease has a relatively low friction coefficient, and the problem of precise operation control of humanoid robot joints is solved; the cable has good high and low temperature resistance, can work for a long time in an environment of-40 to 150 DEG C, and can adapt to a wide working environment.

The invention relates to the technical field of lubricating grease, in particular to a preparation method of low-temperature-resistant extreme-pressure wear-resistant bentonite lubricating grease, which comprises the following steps: S1, adding part of base oil into a reactor, and heating to 60-90 DEG C; s2, adding the organic modified bentonite into the reactor while stirring, and mixing and stirring; s3, adding a polar dispersing aid, and stirring; s4, slowly adding the residual base oil into the reactor, and stirring; adding an extreme pressure additive, and stirring; and S5, cooling the lubricating grease in the reactor to room temperature, and homogenizing to obtain the bentonite lubricating grease. The bentonite lubricating grease prepared by the invention not only has good low-temperature fluidity at-55 DEG C, but also has good adaptability with an extreme pressure additive, so that the bearing protection capability is greatly improved.

The present invention relates to a grease composition for metal-resin lubrication. Provided are a grease composition for which the lubricity between resin and metal is excellent, and a resin sliding member and a resin / metal inter-sliding member in which the use of the grease composition inhibits friction / wear, and in which the operability and long life of the product are improved. A resin grease composition G for a sliding surface made of resin, which contains, as base oil, a fluorine-based base oil (kinematic viscosity at 40°C: 300 mm 2 / s or more) and a synthetic hydrocarbon oil, as thickening agent, a fluorine-based thickening agent and a lithium soap thickening agent or a lithium complex soap thickening agent, as extreme pressure additive, and a fluorine-based surfactant, and a resin sliding member (sliding switch 101) having a sliding surface made of resin using the grease composition G.

The invention provides a rolling method for reducing cold-rolled aluminum foil black wire defects. The rolling method comprises the following steps that strip steel is clamped and positioned in a preset rolling area of a cold-rolling mill through a clamping and positioning device; a transmission device of the cold-rolling mill is started to drive the working rollers to rotate, and the strip steel is rolled between the working rollers; rolling oil of the strip steel is cleaned through a high-frequency ultrasonic generator, the rolling oil is filtered through a gradient microfiltration membrane set, and the filtered oil is conveyed to a cold rolling mill through an oil pump; a high-speed visual positioning unit is used for detecting surface defects of the strip steel, defect morphology and position coordinates are captured, and sulfur / phosphorus-containing extreme pressure additive microdroplets are sprayed through a spraying device for surface repairing; and in the rolling process, the strip steel is subjected to homogenizing annealing through an annealing device. The aluminum foil surface black filament defect is effectively reduced.

The invention relates to the technical field of lubricating oil, and particularly discloses an anti-extreme-pressure lubricating oil composition and a preparation method thereof. The composition comprises base oil, an extreme pressure additive, an anti-wear agent, an antioxidant, a nano solid lubricant, a friction regulator and an oiliness agent, and the nano lubricant is subjected to surface coating treatment and is stably distributed through ultrasonic dispersion and shear mixing. The preparation method adopts multi-stage control, and comprises the steps of premixing, constant-temperature shearing, nano dropwise adding, online monitoring and high-frequency shearing stabilization. The lubricating film stability and the extreme pressure anti-wear performance are synergistically improved under the conditions of high load, high temperature and high shear, and the lubricating film has excellent thermal oxidation stability and industrial applicability.

The present invention relates to a lubricating composition comprising:one or a plurality of diesters, each of said diesters being formed between:a diol chosen from 1,2-propanediol, 1,2-decanediol and 1,3-diols having from 3 to 10 carbon atoms, andtwo monocarboxylic acids, identical or different, having a linear or branched hydrocarbon chain having from 4 to 10 carbon atoms, andat least one base oil distinct from the diester and / or at least one additive distinct from the diester, said additive being selected from friction modifier additives, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressants (PPD), dispersants, anti-foam agents, thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof.

The invention relates to the technical field of hard and brittle material grinding fluids, in particular to a quartz glass grinding fluid and a preparation method thereof, and the quartz glass grinding fluid comprises a lubricating additive, an antirust agent, a pH value regulator, an extreme pressure additive, a defoaming agent and water. Through the synergistic effect of polyoxyethylene and polyether ester in the lubricating additive, the quartz glass grinding fluid has good lubricity and anti-wear and anti-friction properties, the lubricating property of the grinding fluid can be effectively improved, the generation of friction heat is reduced, and a good protection effect on a workpiece is achieved. The preparation method of the quartz glass grinding fluid has the characteristics of simple process, mild and controllable preparation conditions, high production efficiency and suitability for large-scale production. And the prepared quartz glass grinding fluid has excellent lubricity, antifriction and antiwear properties, antibacterial activity, anti-rust property, powder settleability and defoaming property, effectively improves the self-sharpening property of a diamond grinding wheel, improves the grinding efficiency, prolongs the service life of the diamond grinding wheel, and is especially suitable for the grinding process of quartz glass.