37 results about "Extreme pressure additive" patented technology

The invention discloses environment-friendly metal cutting oil with high bearing capacity and high wear resistance, and belongs to the technical field of metal cutting fluid. The cutting fluid is composed of diisooctyl sebacate, a phosphate amine salt extreme pressure additive, a borate additive and a sulfurized extreme pressure additive, the sulfurized extreme pressure additive is sulfurized fatty acid ester and dialkyl pentasulfide (Rc2540), and the addition amount of the phosphate amine salt extreme pressure additive is 0.12-0.80% of the weight of base oil; the addition amount of the borate additive is 0.05-1.45% of the weight of the base oil, the addition amount of the sulfurized fatty acid ester is 0.10-0.85% of the weight of the base oil, and the addition amount of the dialkyl pentasulfide (Rc2540) is 0.20-0.85% of the weight of the base oil. The bearing capacity (Pb) of the cutting oil can reach more than 920N, and the diameter (Db) of a low-load long grinding scar can be less than 0.35 mm.

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.

The invention discloses a blender for power equipment. The blender comprises the following components in parts by weight: 80-90 parts of base oil, 1-2 parts of an anti-wear additive, 1-2 parts of a detergent dispersant, 0.5-1 part of an antioxidant, 0.6-1.1 parts of an extreme pressure additive, 0.3-0.8 part of an anti-foaming agent and 1-2.8 parts of a multifunctional stabilizer. The multifunctional stabilizer is a combination of a surfactant and a viscosity index improver, and the weight ratio of the surfactant to the viscosity index improver is 1: (2-5). After the multifunctional stabilizer is added, the wear scar diameter of the base oil can be greatly reduced, and the wear resistance of the base oil is greatly improved. The multifunctional stabilizer adopted in the scheme is the combination of the surfactant and the viscosity index improver and is controlled within a certain proportion range, and compared with a single stabilizer which is the surfactant or the viscosity index improver, the wear-resisting effect is more remarkable, so that the wear-resisting effect is better due to the addition of the multifunctional stabilizer in the scheme; and the stability of power equipment can be improved.

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 provides a total synthesis titanium alloy cutting fluid and a preparation method thereof. The total synthesis titanium alloy cutting fluid is prepared from the following raw materials in parts by weight: 55 to 60 parts of deionized water, 22 to 26 parts of sulfonate type ionic liquid, 7 to 9 parts of extreme pressure additive, 4.5 to 5.5 parts of antirust agent, 2.5 to 3.0 parts of catalase, 1.2 to 1.6 parts of antibacterial agent, 1.2 to 1.6 parts of stabilizer and 1.0 to 1.5 parts of defoaming agent. The prepared fully-synthesized titanium alloy cutting fluid can effectively lubricate titanium alloy for a long time under the conditions of high speed and high temperature, so that the abrasion of a tool in the machining process is remarkably reduced, and the service life of the tool is prolonged. And meanwhile, the surface machining quality of the titanium alloy workpiece is also remarkably improved, so that the workpiece is smoother and more accurate.

The invention relates to the field of lubricating oil, and particularly discloses high-temperature-resistant environment-friendly lubricating oil and a preparation method thereof. The lubricating oil comprises the following components in parts by weight: 88-93 parts of base oil; 1 to 1.5 parts of an antioxidant; 0.1 to 0.5 part of a preservative; 1-3 parts of a viscosity index improver; 1-3 parts of an anti-wear agent; 1-1.5 parts of an extreme pressure additive; 0.3 to 0.6 part of an antirust agent; the base oil comprises epoxidized coconut oil, pentaerythritol ester and polyethylene glycol, and the weight part ratio of the epoxidized coconut oil to the pentaerythritol ester to the polyethylene glycol is 9: 3: 1. The preparation method comprises the following steps: mixing the base oil; and mixing the components. The lubricating oil provided by the invention has the advantages of excellent biodegradability and high temperature resistance.

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 present invention relates to a lubricating composition comprising at least one base oil and at least one additive chosen from anti-wear additives, extreme pressure additives, antioxidants, anti-corrosion additives, metal deactivator additives, anti-foam agents, dispersants and mixtures thereof,said composition having a boron concentration less than or equal to 100 ppm by weight and a nitrogen concentration strictly greater than 100 ppm by weight and less than or equal to 500 ppm by weight, with respect to the total weight of the lubricating composition.

Provided is a sulfide compound capable of functioning as an extreme pressure additive excellent in oxidation stability and stability of frictional abrasion reduction efficacy. Specifically, the sulfide compound comprises at least a fatty acid triglyceride and sulfur as reaction components, and the content percentage of oleic acid in the fatty acid constituting the fatty acid triglyceride is 80 mass% or more.

The invention relates to a long-life microemulsion type cutting fluid and a preparation method thereof. The long-life microemulsion type cutting fluid comprises a functional auxiliary agent, the functional additive is a core-shell structure particle of which the shell is modified chitosan and the core is a mixture of a bactericide and perfluorohexanone, and the mass ratio of the bactericide to the perfluorohexanone is 10: (1-5). The preparation method comprises the following steps: S1, mixing the first emulsifier, the surfactant and the base oil to form an oil phase; s2, adding the antirust agent and the extreme pressure additive into the oil phase, and uniformly mixing; s3, adding the defoaming agent into the oil phase, and uniformly mixing; and S4, adding the functional additive into the deionized water to form a water phase, slowly adding the oil phase into the water phase, and continuously stirring until the stable micro-emulsion cutting fluid is formed. A modified chitosan shell structure of the functional additive can improve the biological stability and the lubrication wear resistance of the cutting fluid; and through the perfluorohexanone of the core material of the functional additive, the bactericidal material in the shell can be slowly released, so that the service life of the microemulsion type cutting fluid is further prolonged.

The invention discloses environment-friendly metal cutting oil based on neopentyl polyol ester, and belongs to the technical field of metal cutting oil. The cutting oil consists of base oil and an additive, wherein the base oil is a mixture of neopentyl polyol ester (NPE-3) and diisooctyl sebacate; the additives comprise fatty cluster phosphate amine salt (T6450), a borate additive and a vulcanization extreme pressure additive; the borate system additive is octadecyloxy nitrogen calcium borate (T366) or octadecyloxy sulfo nano calcium borate (T365) with the addition amount of 0.04 to 1.8 percent; the sulfurized extreme pressure additive is sulfurized fatty acid ester and dialkyl pentasulfide (Rc2540). The cutting oil has excellent high-temperature and low-temperature bearing capacity and high abrasion resistance, the bearing capacity (Pb) of the cutting oil can reach 1050 N or above, the long abrasion value (Db) of the cutting oil can be smaller than 0.38 mm, and the cutting oil is non-toxic and suitable for various metals.

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.

Diester lubricating composition The present invention relates to - one or more diesters, each of said diesters being · a diol selected from 1,2-propanediol, 1,2-decanediol and 1,3-diols having 3 to 10 carbon atoms, and · two same or different monocarboxylic acids having a straight-chain or branched-chain hydrocarbon chain having 4 to 10 carbon atoms a diester formed therebetween, and - at least one base oil different from the diester and / or at least one additive different from the diester, said additive being selected from friction modifier additives, antiwear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressants (PPD), dispersants, antifoaming agents, thickeners, corrosion inhibitors, copper passivators and mixtures thereof, at least one base oil and / or at least one additive and relates to a lubricating composition containing the same.

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 utility model discloses a hub unit assembly which comprises a bearing body, a base and a stand column, a through groove is formed in the bearing body, the cross section of the base and the cross section of the stand column are round, and the joint of the base and the stand column is machined through the bainite technology. By means of the design of the base and the stand column, the balls can be evenly distributed on the outer side of the stand column, the balls can rotate smoothly and are not prone to abrasion, the gap between every two balls is more even, the abrasion rate of the balls in the using process is reduced, and the service life of the device is prolonged; meanwhile, grease is adopted, an extreme pressure additive and an oxidation stabilizer are added into the grease, the load capacity is enhanced, softening leakage is resisted, and the durability of the device is improved.

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 discloses an extreme pressure lubricant, hard alloy cutter grinding oil and a preparation method and application thereof, and relates to the field of metal working fluids. According to the extreme pressure additive provided by the invention, 2, 4, 6-tris (2-pyridyl) triazine (TPTZ) and ethylene glycol with the mass ratio of (1-5): 1 are compounded, the intermolecular acting force in a system is increased, the tribological performance of TPTZ is improved, meanwhile, the high electronegativity of N atoms can promote the extreme pressure lubricant to form an adsorption film on the metal surface, and therefore the strength of a friction film is further improved; after the TPTZ and the ethylene glycol are compounded, the viscosity of the grinding oil can be reduced, and then the friction of the grinding oil to metal during high-speed grinding is reduced, so that the grinding oil obtained by adding the extreme pressure lubricant provided by the invention has excellent anti-wear and lubricating properties, the wear scar diameter is less than 0.311 mm, the friction coefficient is less than 0.082, and the wear resistance of the grinding oil is greatly improved. And the grinding requirements of hard alloy cutters can be met.

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.