219results about How to "Good viscosity and temperature" patented technology

The invention relates to a method for preparing polyol ester lubricating oil by using a composite solid acid catalyst. The method comprises the following steps of: adding a water carrying agent into polyol ester and monobasic fatty acid, performing esterification reaction under the action of the composite solid acid catalyst, and dehydrating and esterfying to obtain raw ester; performing filter pressing on the raw ester to separate the raw ester from the solid acid catalyst, wherein the catalyst can be recycled; and performing reduced pressure distillation on the raw ester to remove the residual fatty acid, and then deacidifying and decolorizing to refine with heating by using a refining adsorption bed layer respectively to obtain low-acid value polyol ester lubricating oil. The method has the advantages that the catalyst can be recycled, the esterification rate is high, an aftertreatment process is simple, and a product is low in acid value, high in purity, environment-friendly and suitable to be produced industrially. The reaction esterification rate can reach over 99 percent, and the acid value of the ester product obtained through refining can be controlled to be less than 0.01mg KOH/g. The product is excellent in visco-temperature performance, high in lubricity and thermal stability, strong in hydrolytic stability, low in volatility and excellent in electrical insulation property.

The invention provides lubricating oil compound and a preparation method thereof. The lubricating oil compound comprises 50-80wt% of poly alpha olefin, 19-39 wt% of ester oil, 0.1-3.0wt% of antioxidant, 0.01-0.5wt% of metal passivator, 0.1-3.0wt% of corrosion inhibitor, 0.5-5.0wt% of extreme pressure antiwear agent and 0.0005-0.05wt% defoaming agent. Compared with existing lubricating oil, the lubricating oil compound has the advantages that the poly alpha olefin in the lubricating oil is good in viscosity-temperature performance, low-temperature flowability and good in thermal oxidation stability; by the ester oil with good oxidation stability and high-temperature performance, high temperature oxidation performance of the lubricating oil compound can be increased; additives with good oxidation stability and extreme pressure antiwear performance are added to form a composite system, and the lubricating oil compound is good in extreme pressure lubricity and high-temperature oxidation stability under interaction of the additives.

The invention discloses metal drawing oil which is characterized by containing the following components in percentage by weight: 10-30% of oiliness agent, 20-40% of extreme pressure additive, 0-0.5% of antioxidant, 0-5% of corrosion inhibitor and the balance of base oil. The product disclosed by the invention contains a great deal of oiliness agent and extreme pressure additive, and can be used for providing favorable lubricating property and strong adhesive force, reducing the heat in a forming process, effectively lubricating a workpiece and a die, favorably protecting the die and prolonging the service life of the die. Due to the excellent extreme pressure property, the workpiece quality is effectively improved and the processing power is effectively increased under high, deep and difficult processing conditions; and the metal drawing oil is high in viscosity index, good in viscosity-temperature characteristics and high in temperature and weather adaptability.

The invention relates to total synthesis shock absorber oil with a high viscosity index, which comprises the following components in percentage by weight: 85-95% of poly-alpha-olefin synthetic oil, 1-10% of ester synthetic oil, 1-10% of polymethacrylate viscosity index improver, 0.1-5% of anti-wear additive, 0.5-5% of antioxidant, 0.001-0.1% of anti-foaming agent, 0-1% of pour point depressant and 0.01-2.0% of antirust additive. Compared with the common shock absorber oil, the invention has the advantages of remarkable viscosity-temperature performance and antifoaming performance, excellent low temperature performance and lubricating property, favorable antirust and anticorrosion performance, and very remarkable oxidation resistance and appropriate cost, has favorable adaptability with rubber at the same time and can satisfy the use requirements, such as all weather, long life, universality, and the like.

The invention is suitable for the field of new materials, and provides a type of biodegradable lubricating oil and a preparation method thereof. The biodegradable lubricating oil comprises hindered polyol ester, inorganic nanoparticles and diluents, wherein the hindered polyol ester is prepared by mainly using a bio-enzyme catalysis method. The lubricating oil, prepared according to the preparation method provided by the invention, has the characteristics of excellent heat stability and oxidization stability, good hydrolytic stability, low temperature fluidity, viscosity-temperature property, lubrication property and biodegradability, and can be applied to the fields of aviation, metal processing, textile and tanning.

The invention provides a lubricating oil viscosity index improver and a preparation method thereof; the lubricating oil viscosity index improver has stable chemical performance, oxidation resistance, shear resistance and good compatibility with lubricating oil; in addition to good thickening ability to the lubricating oil, the lubricating oil viscosity index improver further has excellent anti-shear stability and viscosity-temperature performance. The viscosity index of the lubricating oil after modification is greater than 150, and low-temperature kinematic viscosity is less than 1600mpa.s. The lubricating oil viscosity index improver can not only be used for preparing multi-level lubricating oil, but also be used for improving the viscosity index of base oil of the lubricating oil with the low viscosity index, thereby having broad application prospects.

A heavy-duty antiemulsifying oil film type bearing oil for high-speed wire rolling mill contains demulsifier, antiwear agent, antifoaming agent, alkylnaphthalene, antioxidant and mineral oil. Its advantages are excellent antiemulsifying, antiwear, anti-extreme-pressure, anticorrosion, antirust, antifoaming and antioxidizing performance, and better viscosity-temp characteristic.

The invention relates to a refrigerating engine oil composition and an application of the refrigerating engine oil composition. One aim of the invention is to provide a refrigerating engine oil composition which has good compatibility with hydrocarbon refrigerants, is high in flash point and low in viscosity, can be used for furthest increasing the COP (coefficient of performance) value of a compressor, and has excellent thermal stability and relatively low cost. The other aim of the invention is to provide an application of the refrigerating engine oil composition used as a lubricating agent in a refrigeration compressor which uses isobutane, propane or a mixture of isobutane and propane as a refrigerant. The refrigerating engine oil composition consists of the following components in percentage by weight: 96.5-99.5% of base oil and 0.5-3.5% of a lubricating oil additive, wherein by taking the weight of the base oil as 100%, the base oil comprises the following components in percentage by weight: 20-79% of alkylated aromatic hydrocarbon and 21-80% of an alkane mixture; by taking the total weight of the composition as 100%, the lubricating oil additive comprises the following components in percentage by weight: not more than 3% of an extreme pressure anti-wear additive, 0-3% of an antioxidant, 0-3% of the lubricating agent, 0-0.8% of a metal deactivating agent and 0-0.02% of an anti-foaming agent.

The invention provides a multi-graded anti-wearing hydraulic oil composition and a preparation method thereof. The multi-graded anti-wearing hydraulic oil composition is prepared from the following components according to the total weight of 100%: (a) 85%-95%, preferably 88%-93%, of type III hydroisomerizing base oil; (b) 3%-5%, preferably 3%-4.5%, of a viscosity index improver; (c) 0.5%-4%, preferably 1.5%-3%, of an antioxidant; (d) 0.5%-5%, preferably 0.5%-2%, of an extremely pressure anti-wearing agent; (e) 0.002%-0.020%, preferably 0.005%-0.015%, of an anti-foaming agent; and (f) 0.5%-4%, preferably 1%-3%, of a cleaning dispersant. The product provided by the invention has relatively high comprehensive performance and low cost and has good viscosity-temperature characteristics, low-temperature flowability and oxidization stability; meanwhile, nano titanium dioxide which has dual advantages of fluid smoothing and solid smoothing is compounded with dialkyldithiophosphate, so that the product has good bearing capability and anti-wearing performance; and furthermore, when the product is used, the number of times of replacing oil can be reduced, so that the working efficiency of hydraulic machinery is improved and the aims of energy saving and environmental friendliness are realized.

The invention discloses a preparation method of biodegradable screw air compressor oil. The preparation method comprises the following steps: 1) synthetizing base oil A; 2) synthetizing base oil B; 3) preparing combined base oil A1; 4) preparing combined base oil B1; 5) preparing combined base oil C1; and 6) adding the combined base oil A1, the combined base oil B1 or the combined base oil C1 into a blending kettle, then adding other regents, mixing and fully dissolving all the components to obtain the biodegradable screw air compressor oil. Through optimization of ratio, an excellent lubricating oil product which has good oxidization stability, viscosity-temperature performance, wearing resistance, anti-rust performance and defoaming performance and no toxicity and can be biodegradable is prepared, which is environment-friendly, has a performance index achieving 46 # compressor oil standard, and is suitable for a screw air compressor and the like.

The invention discloses an organic fluorine-silicon surface treatment agent and a preparation method thereof. According to the organic fluorine-silicon surface treatment agent, amino silane coupling agents, amino-polysiloxane and epoxy polysiloxane serve as basic reactants, hexafluoropropene trimer serves as a modifying agent, glycol dimethyl ether serves as solvent, triethylamine serves as a catalyst, and the organic fluorine-silicon surface treatment agent is a fluorine-silicon oxidane compound synthesized through a reaction or a fluorine-silicon oxidane polymer with a perfluoroalkyl group introduced to a side chain. According to the organic fluorine-silicon surface treatment agent and the preparation method thereof, it is not needed to generate a reaction intermediate through a link chain structure in the first place, the synthesis route is simple, the conversion rate is high, and the prepared organic fluorine-silicon compound has high surface activity and high stability and can be used for water resistance, oil resistance and stain repellent finishing of fiber fabric as well as waterproof and stain repellent treatment of metal and building materials.

The invention discloses an aqueous cutting fluid, which is prepared from the following raw materials in parts by weight: 10-12 parts of polyethylene glycol, 2-3 parts of triethanolamine, 6-9 parts of dibutyl phosphate, 19-22 parts of castor oil, 1-2 parts of calcium sulfide alkylphenol, 1-2 parts of sorbic monostearate, 6-8 parts of assistant and 200 parts of water. The aqueous cutting fluid disclosed by the invention has excellent viscosity-temperature performance, lubricity, extreme pressure property and biodegradability, fast cooling speed, and good corrosion inhibition property, is long in service cycle in comparison with the traditional cutting fluid, small in abrasion on a tool, and high in yield, and has good protection roles on nonferrous metals and black metal, and the processed work-piece is bright.

The present invention provides a lubricating oil composition, which comprises 1-15% by mass of a viscosity index improver, zinc dialkyl dithio phosphate, and a main amount of a lubricating base oil, wherein the viscosity index improver is prepared by carrying out a polymerization reaction and a hydrogenolysis reaction on straight chain alkyl vinyl ether and branched-chain alkyl vinyl ether, and the phosphorus element content in the zinc dialkyl dithio phosphate is 0.01-0.07% of the mass of the composition. According to the present invention, the lubricating oil composition has characteristics of excellent low temperature property, excellent viscosity-temperature property, excellent shear stability and excellent wear resistance; and the sulfur content in the composition does not exceed 0.4% by mass, the sulfate ash content in the composition does not exceed 1% by mass, and the phosphorus content does not exceed 0.08% by mass.

The invention discloses gear oil special for a reduction gearbox of a pumping unit. The gear oil is prepared from, by mass, blend base oil, metallocene polyisobutene, metallocene polymerized alpha olefin 150, polymethacrylate, an extreme pressure anti-wear agent, a cleaning gent, a dispersing agent, benzotriazole, a defoaming agent and a demulsifying agent T1001, wherein the blend base oil is prepared from paraffin-base base oil 600 SN, residual oil 150 BS and hydrofined oil 250 N, and a mixture of thiophosphoric acid amine salt, bisoctyl dithiophosphate zinc and/or oil-soluble molybdenum is adopted as the extreme pressure anti-wear agent. The gear oil for the reduction gearbox is better in physical and chemical index and using performance than industrial closed gear oil, has the good extreme pressure anti-wear performance, thermal oxidation stability, corrosion resistance and anti-emulsification performance and meets the using requirements of oil pumping unit oil of an oil field.

The invention discloses lubricating oil for mechanical equipment and a preparation method thereof, and relates to the field of lubricating oil. The lubricating oil for the mechanical equipment comprises the following raw materials in parts by weight: 30-40 parts of polyalphaolefin, 15-20 parts of fluorosilicone oil, 1.5-4 parts of pentaerythritol ester, 2-5 parts of modified nanodiamond, 1-3 partsof castor oil, 3-6 parts of grapheme, 1-3 parts of molybdenum disulfide, 0.4-0.8 part of Tween, 0.5-1.2 parts of sorbitol monooleate, 0.2-0.6 part of an antioxidant, 0.4-0.8 part of a demulsifying agent and 0.7-1.5 parts of a viscosity index improver. Through cooperation of the raw materials, the lubricating oil has good viscosity, lubricity and antioxidation; the lubricating oil forms a curing protection layer on the surface of the mechanical equipment; meanwhile, the lubricating oil has good wear resistance and durability.

The invention relates to the technical field of lubricants, particularly an antirust lubricant and a preparation method thereof. The antirust lubricant is composed of the following components in parts by mass: 45-65 parts of fatty glyceride, 22-28 parts of modified soybean oil, 5-10 parts of methyl silicone oil, 2-5 parts of corrosion inhibitor, 4-8 parts of non-ionic surfactant, 5-10 parts of sulfonate rust inhibitor, 4-8 parts of phosphate amine salt, 1.2-1.5 parts of antirust compound oil, 1.2-2.4 parts of sodium molybdate, 2-5 parts of polyethyleneglycol, 6-12 parts of glycerol, 0.02-0.06 part of 2,6-di-tert-butyl-para-cresol, 0.2-0.8 part of solid additive and 0.1-0.5 part of antioxidation preservative. By using the modified soybean oil as the base oil, the biodegradability is high. The antirust lubricant has the advantages of high viscosity index, favorable viscosity-temperature characteristics, favorable low-temperature fluidity, accessible raw materials and low cost. The antirust lubricant has excellent extreme pressure abrasion resistance since the vegetable oil polar molecules can form a protective film on the metal surface.

The invention discloses composite screw type air compressor oil which comprises, by mass, 10-15 parts of raw material synthesis base oil A, 8-12 parts of synthesis base oil B, 20-25 parts of PAG polyether, 20-30 parts of poly-alpha-olefins, 0.1-1.4 parts of alkylated diphenylamine, 0.8-2 parts of 2,6-di-tert-butyl mixed phenols, 0.05-0.3 part of methyl benzene triazole derivative, 0.05-0.3 part of benzene triazole fatty acid amine salt, 10-12 parts of tributyl phosphate, 1.2-2.2 parts of dialkyl dithiophosphate, 0.005-0.05 part of methylsiloxane mixture or liquid ester copolymer, 3-7 parts of dialkyl group naphthalene metal organic sulfonate and 17-19 parts of fat sulphide isobutene. The composite screw type air compressor oil has the advantages of good antioxidation stability, demulsibility and anti-corrosion and anti-rust property, extremely good defoaming performance, excellent viscosity-temperature property and the like. Compared with mineral compressor oil, the energy is saved, oil consumption is lowered, environment pollution is reduced, the service life is prolonged, the performance index reaches the standard of 46# compressor oil, and the compressor oil is used for air compression system mechanical equipment.

The invention relates to a screw-type ammonia compressor oil composite, which mainly solves the technical problems of poor resistance to oxidation and short oil product service life of the screw-type ammonia compressor oil composite under the condition that cuprammonia is mixed with ammonia in the prior art. The screw-type ammonia compressor oil composite comprises the following ingredients in parts by weight: 100 parts of mineral base oil and 0.01-2 parts of antioxygen, wherein the antioxygen consists of phenol-type antioxygen and ammonia-type antioxygen; the phenol-type antioxygen is selected from at least one of 4,4-methylenebis (2,6- di-tert-butyl phenol), 3,5-di-tert-butyl-4-hydroxy phenyl acrylic ester or quadri[beta(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester; and the ammonia-type antioxygen is selected from at least one of phenyl-alpha-naphthylamine, alkylating phenyl-alpha-naphthylamine and octyl butyl diphenylamine or alkylating diphenylamine. According to the technical scheme, the problem is favorably solved, and the technical scheme can be used for the industrial production of the screw-type ammonia compressor oil composite.

The present invention relates to a full-synthetic wind power generation gear oil, which at least comprises: 91% of a mixed base oil, 2.25-3.45% of an extreme pressure agent, 1-2% of a polytetrafluoroethylene emulsion friction reducer, 3.6-3.8% of a dispersant, 0.5% of a benzotriazole derivative metal deactivator, 0.4% of an antioxidant, and 0.05% of a polyether-based demulsifier. According to the present invention, the full-synthetic wind power generation gear oil uses the new specially-synthesized material polyester having the high viscosity index and the oil-soluble polyether, has advantages of excellent viscosity-temperature performance, good micro-pitting resistance, prominent gear cleanliness, excellent high-temperature lubricating property and excellent low-temperature fluidity, can effectively reduce the downtime number of the wind turbine due to the change of the ambient temperature, can improve the operation efficiency of the wind turbine, can substantially prolong the oil change maintenance period and the service life of the wind power gear speed increasing box, and can objectively achieve the energy saving and the environmental protection.