CN113956910A - Synthetic lubricating oil composition - Google Patents
Synthetic lubricating oil composition Download PDFInfo
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- CN113956910A CN113956910A CN202010707969.8A CN202010707969A CN113956910A CN 113956910 A CN113956910 A CN 113956910A CN 202010707969 A CN202010707969 A CN 202010707969A CN 113956910 A CN113956910 A CN 113956910A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/141—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/285—Esters of aromatic polycarboxylic acids
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/288—Partial esters containing free carboxyl groups
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
- C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
- C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
- C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/043—Ammonium or amine salts thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
Abstract
The invention relates to a synthetic lubricating oil composition, which comprises the following components: 82.0-96.33 wt% of base oil, 3-10 wt% of ester oil, 0.1-3.0 wt% of extreme pressure antiwear additive, 0.02-1.0 wt% of metal deactivator, 0.05-1.0 wt% of antirust corrosion inhibitor, 0.5-3.0 wt% of antioxidant additive and 10-200 mug/g of defoaming agent; wherein the base oil is water-insoluble polyether polyalkylene glycol, and the ester oil is saturated polyol ester and/or polybasic acid ester. The lubricating oil composition has excellent viscosity-temperature performance, low-temperature performance, oxidation stability, high-temperature cleaning performance, extreme pressure wear resistance, good rust resistance, corrosion resistance and foam resistance, can quickly form an oil film, reduces the operating temperature, reduces the high-temperature coking property and reduces the abrasion between the tooth surfaces of the bearing.
Description
Technical Field
The invention relates to a lubricating oil composition, in particular to a lubricating oil composition for an oil-gas lubricating device of a large continuous casting machine and a continuous rolling unit in the metallurgical industry.
Background
The mechanism of oil-gas lubrication is that lubricating oil and compressed air form two-phase mixed oil-gas flow in an oil-gas mixer, the lubricating oil and the compressed air in the two-phase mixed oil-gas flow are not really fused, but under the action of the compressed air, the lubricating oil is driven to adhere around the pipe wall in an oil film form and move forwards at a slow speed, when the lubricating oil reaches an oil-gas outflow opening, the oil film becomes thinner and is connected into a piece, and finally the lubricating oil is sprayed to a lubricating point in extremely fine continuous oil drop flow. It is emphasized that the flow rate of oil in the oil and gas pipe is much lower than the flow rate of compressed air, and the oil and compressed air coming out of the oil and gas pipe are also separated, so that the lubricating oil is not atomized, which is the biggest difference between oil-gas lubrication and oil-mist lubrication.
The technology is used as a novel and efficient gas-liquid two-phase fluid lubricating technology which is successfully applied to a plurality of large-scale metallurgical enterprises in China, and the outstanding advantages of high efficiency, energy conservation, environmental protection and the like meet the harsh lubricating requirements of industries such as metallurgy and the like under the working conditions of high temperature, high speed and heavy load. The oil-gas lubrication has the characteristics of 1) no oil mist, and the surrounding environment is not polluted, thereby being beneficial to environmental protection; 2) the oil supply is accurate, the oil quantity can be accurately calculated, and the oil can be conveyed to each lubricating point according to different requirements; the problem of difficult atomization of high-viscosity lubricating oil does not exist; 3) the cooling device has the air cooling effect, can reduce the operating temperature of the bearing, thereby prolonging the service life of the bearing, and is particularly suitable for rolling bearings; 4) the compressed air entering the bearing keeps a certain positive pressure at the lubricated part, so that external dirt and water cannot enter the bearing, and a good sealing effect is achieved; 5) the oil consumption is little; 6) the hydraulic drive system is suitable for severe working conditions such as high-temperature, heavy-load, high-speed and watery drive operation occasions.
Chinese application CN1710041A discloses a synthetic oil-gas lubricating oil. The invention relates to a lubricating oil composition taking synthetic oil as base oil, and synthetic oil-gas lubricating oil. The product is prepared by taking polyether synthetic oil as base oil and matching with an antioxidant, a metal deactivator, an antirust agent, an oiliness agent, an extreme pressure antiwear agent and an anti-foaming agent, and has the advantages of outstanding high temperature resistance, no carbon accumulation, no coking, no oil pipe blockage and no bearing clamping; excellent low temperature resistance, and very good fluidity even at-30 ℃; the extreme pressure wear resistance is good, and the bearing capacity is high; excellent dispersibility, and is particularly suitable for oil-gas lubrication and oil-mist lubrication; the product can be completely biodegraded, has no toxicity, and is a green product meeting the environmental protection requirement.
Chinese application CN101802149A discloses a lubricating oil composition. The invention relates to a composition and a lubricating oil comprising said composition, said composition comprising: (i) a base fluid stock comprising (a) a PTEEG fluid (a poly (trimethylene-ethylene ether) glycol that is a fluid at ambient temperature), and (b) an additive package comprising certain specified additive combinations.
Chinese application CN106467829A discloses an anti-wear additive for engine lubricating oil. The engine lubricating oil antiwear additive is characterized in that: from a base oil; an antioxidant; a detergent; a dispersant; an extreme pressure antiwear agent; a rust inhibitor; a pour point depressant; a metal deactivator; nano zinc; and tungsten disulfide. The antioxidant is as follows: a metal salt of a dialkyl dithiophosphate; the detergent is as follows: synthesizing sulfonate; the dispersing agent is: a styrene ester derivative; the extreme pressure antiwear agent is: triethyl phosphate; the rust inhibitor is: zinc naphthenate; the pour point depressant is: poly-alpha-olefins; the metal deactivator is: a triazole; the manufacturing method is simple, the manufactured product has low price, high efficiency and high cost performance, the comprehensive efficiency of the lubricating oil is fully exerted, the strong repairing effect on the aging and abrasion of mechanical equipment can improve the anti-oxidation, anti-corrosion, cleaning and dispersing effects of the lubricating oil, and simultaneously improve the anti-wear and anti-extreme pressure effects, reduce the noise, reduce the tail gas emission, prolong the oil change period and save the fuel oil. The comprehensive efficacy of the lubricating oil is completely improved.
Chinese application CN1415712A discloses a lubricating oil composition. The invention provides a general internal combustion engine lubricating oil composition which can meet the specification requirements of GB 11121 and API SF/CD general internal combustion engine oil. The composition consists of neutral base oil (A), magnesium naphthenate detergent (B), sulfurized calcium alkyl phenate (C), polyisobutylene succinimide (D), zinc dialkyl dithiophosphate (E), auxiliary antioxidant (F), viscosity index improver (G), pour point depressant (H) and anti-foaming agent (H).
Chinese application CN1537157A discloses a high temperature lubricant composition. The invention provides a synthetic lubricating oil us0220955 based on 100% polyol ester composition suitable for use in high temperature static chain oils. The lubricating oil comprises a basestock based on a polyol ester which is the reaction product of a neopentyl polyol comprising a majority of dipentaerythritol and a mixture of C5 to C12 carboxylic acids. Preferred carboxylic acid mixtures include heptanoic acid (C7), caprylic/capric acid (C8-C10) and isononanoic acid (3, 5, 5-trimethylhexanoic acid) (iso-C9). The polyol base component is blended with a package additive that includes a viscosity index improver (tackifier), an antioxidant, an extreme pressure/antiwear agent, and an anti-corrosion agent. The package additive can be added up to 20% by weight of the lubricant to provide a lubricant viscosity of 270 to 330cSt at 40 ℃ and not less than about 25.0cSt at 100 ℃.
At present, the oil-gas lubricating device in China is applied from the initial stage to the present, common medium and heavy load industrial gear oil lubricants are mostly adopted, although the products can meet the requirements of the common oil-gas lubricating device on the lubricating performance of oil products, the adaptability to severe working conditions such as high-temperature environment, low-temperature environment and the like is poor, and the main performance is as follows: 1) the high temperature resistance is poor, and the oxidation and deterioration are easy; 2) the bearing is easy to coke, so that the bearing is stuck and scrapped; 3) poor viscosity-temperature characteristics, and poor lubrication effect due to the fact that the oil film thickness is reduced because of low viscosity at high temperature. The reason is that: the base oil of common medium and heavy load industrial gear oil is mostly I-type mineral oil, and due to insufficient refining depth and excessively high carbon residue value, deposits such as colloid, asphaltene and the like are easily generated at parts which are subjected to high temperature and baking for a long time in certain high-temperature systems, particularly continuous casting systems, so that a distributor conveying pipeline is blocked, lubrication of a lubrication point is poor, and the conditions of dry friction, bearing locking and the like occur. In recent years, the synthetic oil-gas lubricating oil successfully solves the problems of the mineral oil-gas lubricating oil such as the bearing of the withdrawal and straightening unit of the continuous casting system is blocked and the oil pipe is blocked due to coking, and the development is rapid.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a synthetic lubricating oil composition, which is particularly suitable for oil-gas lubricating devices of large continuous casting machines and continuous rolling units in the metallurgical industry.
In order to achieve the above object, the present invention provides a synthetic lubricating oil composition comprising the following components: 82.0-96.33 wt% (component A) of base oil, 3-10 wt% (component B) of ester oil, 0.1-3.0 wt% (component C) of extreme pressure antiwear additive, 0.02-1.0 wt% (component D) of metal deactivator, 0.05-1.0 wt% (component E) of antirust corrosion inhibitor, 0.5-3.0 wt% (component F) of antioxidant additive and 10-200 mug/G (component G) of defoaming agent;
wherein the base oil is water-insoluble polyether polyalkylene glycol, and the ester oil is saturated polyol ester and/or polybasic acid ester.
The synthetic oil-gas lubricating oil composition provided by the invention preferably comprises one or more of saturated trimethylolpropane fatty acid ester, saturated dipentaerythritol ester with a branched chain structure and phenyl ester. The saturated dipentaerythritol ester and the meta-phenyl ester with the branched chain structure have excellent high-temperature cleaning performance and thermal oxidation stability compared with other ester oils, and can inhibit the synthetic oil-gas lubricating oil from coking under the severe working condition of extremely high temperature and protect the bearing.
The synthetic oil and gas lubricating oil composition according to the present invention is preferably a propylene oxide homopolymer.
In the synthetic oil and gas lubricating oil composition of the present invention, it is preferable that the extreme pressure antiwear additive includes at least one of trialkyl phosphate, triaryl phosphate, trialkyl thiophosphate, triaryl thiophosphate, isomeric alkylphenyl phosphate, aromatic amine phosphate, and fatty amine phosphate.
Preferably, the extreme pressure antiwear additive comprises at least one of tricresyl phosphate, triphenyl thiophosphate, tributyl phosphate, tributyl thiophosphate, trioctyl phosphate, trioctyl thiophosphate, diisooctyl dithiophosphate, diisopropyl phosphate ester octadecylamine salt, isopropyl isooctyl phosphate ester octadecylamine salt, diisohexyl phosphate ester octadecylamine salt, diisooctyl phosphate ester octadecylamine salt, butyl isooctyl phosphite ester-N, N-dibutylamine salt, bis (2-ethylhexyl) phosphate ester-N, N-dibutylamine salt, 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivative and tertiary alkyl primary phosphate salt.
The butyl isooctyl phosphite ester-N, N-dibutylamine salt, di (2-ethylhexyl) phosphate ester-N, N-dibutylamine salt and 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivatives not only have better extreme pressure and wear resistance than the traditional phosphorus-containing additive, but also have excellent high-temperature detergency, and the problem of coking precipitation at high temperature of the traditional phosphorus-containing additive is avoided.
The synthetic oil-gas lubricating oil composition provided by the invention has the advantages that the metal deactivator preferably comprises one or more of a benzotriazole di-n-butylamine formaldehyde condensate, a benzotriazole dioctylamine formaldehyde condensate, a thiadiazole dodecyl mercaptan hydrogen peroxide condensate and a thiadiazole octadecyl mercaptan hydrogen peroxide condensate.
The synthetic oil-gas lubricating oil composition provided by the invention has the advantages that the metal deactivator is preferably one or more of benzotriazole, tolyltriazole, methylbenzotriazole, sodium tolyltriazole and sodium methylbenzotriazole.
In the synthetic oil and gas lubricating oil composition of the present invention, preferably, the polyalkylene glycol is a butyl-capped EO/PO (ethylene oxide/propylene oxide) random water-insoluble polyether.
The synthetic oil-gas lubricating oil composition of the invention preferably comprises one or more of amine salt of aliphatic phosphate, alkenyl succinic acid half ester, amine salt of alkyl phosphoric acid with dithiophosphoric acid derivative, barium dinonylnaphthalene carboxylate, acyl sarcosine and imidazole.
In the rust prevention mechanism, the rust inhibitor usually has a rust prevention effect by forming an adsorption film with the surface of metal, and particularly for traditional mineral oil, the rust inhibitor can well play a rust prevention effect by using a lower dosage of the base oil because the polarity of the base oil is small. However, the base oil adopted in the invention is butyl-capped EO/PO random water-insoluble polyether, and the particularity of the molecular structure thereof causes that the polarity of the base oil is larger than that of the traditional mineral oil, the high polarity and the antirust agent have competitive adsorption on the metal surface, and the extreme pressure antiwear agent and the antirust agent also have the problem of competitive adsorption, so that the antirust agent is difficult to form an adsorption film on the metal surface, and the antirust performance of the oil product is poor. The antirust agents and the combination thereof can well reduce the polarity of the base oil, so that the base oil can form an adsorption film with the metal surface under a smaller dosage, and the antirust agent passes the index requirements of GB/T11143 antirust test A method.
The synthetic oil-gas lubricating oil composition provided by the invention preferably comprises one or more of 2, 6-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, dialkyl diphenylamine and dialkyl dithiocarbamate.
The synthetic oil-gas lubricating oil composition according to the present invention, wherein the antioxidant additive is preferably one or more of a condensate of N-phenyl- α -naphthylamine and butyloctyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and butylnonyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and dioctyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and dinonyldiphenylamine, di-N-butyldithiocarbamate, di-N-octyldithiocarbamate and di-N-dodecyldithiocarbamate.
The synthetic oil-gas lubricating oil composition provided by the invention has the advantages that the defoaming agent is preferably one or more of siloxane, organosilicate, polyalkylacrylate and polyethylene glycol stearyl ether. Among these, the silicone is more preferably polydimethylsiloxane.
The synthetic oil-gas lubricating oil composition of the present invention is preferably one in which the kinematic viscosity of the water-insoluble polyether polyalkylene glycol at 40 ℃ is 90.0 to 352.0mm2(ii) s, more preferably 90 to 242mm/s2。
The synthetic oil-gas lubricating oil composition provided by the invention preferably has the kinematic viscosity of 20.0-300.0 mm at 40 DEG C2A more preferable range is 150-2。
The invention has the beneficial effects that:
the synthetic oil-gas lubricating oil composition provided by the invention is a synthetic oil-gas lubricating oil composition with excellent performance, great technical difficulty and strong pertinence, and the excellent high-temperature cleaning performance, low-temperature performance, wear resistance, rust prevention and corrosion prevention performance and thermal stability can meet the lubricating requirements of oil-gas lubricating devices of large continuous casting machines and continuous rolling mills in the metallurgical industry. And the product has low production cost, and can produce good economic benefit and social benefit when being applied to an oil-gas lubricating device.
In addition, the lubricating oil composition has excellent viscosity-temperature performance, low-temperature performance, oxidation stability, high-temperature cleaning performance, extreme-pressure wear resistance, good rust resistance, corrosion resistance and foam resistance, can quickly form an oil film, reduce the operating temperature, reduce the high-temperature coking property, reduce the wear among the tooth surfaces of the bearings, and can meet the lubricating requirements of various bearings and gear boxes in an oil-gas lubricating device.
Detailed Description
The following examples illustrate the invention in detail: the present example is carried out on the premise of the technical scheme of the present invention, and detailed embodiments and processes are given, but the scope of the present invention is not limited to the following examples, and the experimental methods without specific conditions noted in the following examples are generally performed according to conventional conditions.
All ranges disclosed herein are inclusive of the endpoints and independently combinable. The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values.
The synthetic lubricating oil composition provided by the invention is used for various bearings or various load gear boxes in an oil-gas lubricating device, and is particularly suitable for oil-gas lubricating devices of large continuous casting machines and continuous rolling mills in the metallurgical industry. The synthetic lubricating oil composition comprises the following components: 82.0-96.33 wt% of polyalkylene glycol, 3-10 wt% of ester oil, 0.1-3.0 wt% of extreme pressure antiwear additive, 0.02-1.0 wt% of metal deactivator, 0.05-1.0 wt% of antirust corrosion inhibitor, 0.5-3.0 wt% of antioxidant additive and 10-200 μ g/g of defoaming agent;
wherein the polyalkylene glycol is a propylene oxide homopolymer; the ester oil is saturated polyol ester and/or polybasic acid ester.
In some embodiments, the polyalkylene glycol is a butyl capped ethylene oxide/propylene oxide random water insoluble polyether.
In some embodiments, the ester oil is one or more of saturated dipentaerythritol ester with a branched structure, saturated trimethylolpropane fatty acid ester, and meta-phenyl ester. The saturated dipentaerythritol ester and the meta-phenyl ester with the branched chain structure have excellent high-temperature cleaning performance and thermal oxidation stability compared with other ester oils, and can inhibit the synthetic oil-gas lubricating oil from coking under the severe working condition of extremely high temperature and protect the bearing.
In some embodiments, the extreme pressure antiwear additive comprises at least one of a trialkyl phosphate, a triaryl phosphate, a trialkyl thiophosphate, a triaryl thiophosphate, an isomeric alkylphenyl phosphate, an aromatic amine phosphate, and a fatty amine phosphate.
In some embodiments, the extreme pressure antiwear additive is one or more of tricresyl phosphate, triphenyl thiophosphate, tributyl phosphate, tributyl thiophosphate, trioctyl phosphate, trioctyl thiophosphate, diisooctyl dithiophosphate, diisopropyl phosphate octadecyl amine salt, isopropyl isooctyl phosphate octadecyl amine salt, diisohexyl phosphate octadecyl amine salt, diisooctyl phosphate octadecyl amine salt, phosphate tert-alkyl primary amine salt, butyl isooctyl phosphite N, N-dibutylamine salt, di (2-ethylhexyl) phosphate N, N-dibutylamine salt, 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivatives. The butyl isooctyl phosphite ester-N, N-dibutylamine salt, di (2-ethylhexyl) phosphate ester-N, N-dibutylamine salt and 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivatives not only have better extreme pressure and wear resistance than the traditional phosphorus-containing additive, but also have excellent high-temperature detergency, and the problem of coking precipitation at high temperature of the traditional phosphorus-containing additive is avoided.
In some embodiments, the metal deactivator is one or more of a benzotriazole di-n-butylamine formaldehyde condensate, a benzotriazole di-octylamine formaldehyde condensate, a thiadiazole dodecyl mercaptan hydrogen peroxide condensate, and a thiadiazole octadecyl mercaptan hydrogen peroxide condensate.
In some embodiments, the metal deactivator is one or more of benzotriazole, tolyltriazole, methylbenzotriazole, sodium tolyltriazole, and sodium methylbenzotriazole.
In some embodiments, the rust inhibiting corrosion inhibitor is one or more of an amine salt of an aliphatic phosphate ester, an alkenyl succinic acid half ester, an amine salt of an alkyl phosphoric acid having a dithiophosphoric acid derivative, barium dinonylnaphthalene carboxylate, sarcosine, and imidazole.
The base oil adopted in the invention is butyl-terminated ethylene oxide/propylene oxide random water-insoluble polyether, the polarity of the base oil is larger than that of the traditional mineral oil due to the particularity of the molecular structure of the base oil, and the extreme pressure antiwear agent and the antirust agent have the problem of competitive adsorption.
In some embodiments, the antioxidant additive is one or more of 2, 6-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, a condensate of dialkyldiphenylamine, and a dialkyldithiocarbamate.
In some embodiments, the antioxidant additive is one or more of N-phenyl-alpha-naphthylamine and butyloctyldiphenylamine condensate, or N-phenyl-alpha-naphthylamine and butylnonyldiphenylamine condensate, N-phenyl-alpha-naphthylamine and dioctyldiphenylamine condensate, N-phenyl-alpha-naphthylamine and dinonyldiphenylamine condensate, di-N-butyldithiocarbamate, di-N-octyldithiocarbamate, and di-N-dodecyldithiocarbamate.
In some embodiments, the defoaming agent is one or more of a siloxane, an organosilicate, a polyalkylacrylate, and a polyethylene glycol stearyl ether.
In some embodiments, the silicone is polydimethylsiloxane.
In some embodiments, the polyalkylene glycol has a kinematic viscosity at 40 ℃ of 90.0 to 352.0mm2S, preferably from 90 to 242mm/s2。
In some embodiments, the ester oil saturated polyol ester and the polybasic acid ester have a kinematic viscosity at 40 ℃ of 20.0 to 300.0mm2A/s of preferably 150-2。
The synthetic oil-gas lubricating oil composition provided by the invention can be prepared according to the following method: according to the viscosity grade of the composition, one or more polyalkylene glycols are proportionally added into a stainless steel blending kettle with a stirrer, and then required amounts of ester oil, extreme pressure antiwear additive, metal deactivator, antirust corrosion inhibitor, antioxidant additive and defoamer are sequentially added into the blending kettle according to the proportion, and the mixture is heated to 50-60 ℃ and stirred for 4 hours until the mixture is uniform and transparent.
Example 1
The lubricating oil composition of this embodiment, comprising: 95.68 wt% butyl capped EO/PO random water insoluble polyether base oil (component A); 3.0% by weight of saturated dipentaerythritol neopentylglycol decanoate (component B); 0.30% by weight of tricresyl phosphate and 0.2% by weight of diisooctyl phosphate octadecylamine salt (component C); 0.02% by weight of a benzotriazole dioctylamine formaldehyde condensate (component D); 0.20% by weight of dodecylamine isopropyl isooctyl phosphate (component E); 0.40% by weight of 2, 6-di-tert-butyl-p-cresol and 0.20% by weight of dialkyldiphenylamine (component F); 30. mu.g/G silicone antifoam (component G).
Example 2
The lubricating oil composition of this embodiment, comprising: 93.68 wt% butyl capped EO/PO random water insoluble polyether base oil (component A); 5.0% by weight of saturated dipentaerythritol neopentylglycol decanoate (component B); 0.30% by weight of tricresyl phosphate and 0.2% by weight of butylisooctylphosphite-N, N-dibutylamine salt (component C); 0.02% by weight of a benzotriazole dioctylamine formaldehyde condensate (component D); 0.20% by weight of dodecenylsuccinic acid half-ester (component E); 0.40% by weight of 2, 6-di-tert-butyl-p-cresol and 0.20% by weight of dialkyldiphenylamine (component F); 30. mu.g/G silicone antifoam (component G).
Example 3
The lubricating oil composition of this embodiment, comprising: 93.68 wt% butyl capped EO/PO random water insoluble polyether base oil (component A); 5.0% by weight of trimellitate (component B); 0.30% by weight of tricresyl phosphate and 0.2% by weight of a 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivative (component C); 0.02% by weight of a benzotriazole dioctylamine formaldehyde condensate (component D); 0.20% by weight of barium dinonylnaphthalenecarboxylate (component E); 0.40% by weight of 2, 6-di-tert-butyl-p-cresol and 0.20% by weight of dialkyldiphenylamine (component F); 30. mu.g/G silicone antifoam (component G).
The main physical and chemical properties of the lubricating oil compositions of examples 1, 2 and 3 are shown in Table 1.
TABLE 1
In Table 1, the coke-forming property test was carried out for 4 hours at a plate temperature of 316 ℃ and an oil temperature of 106 ℃ according to the requirements of the method RH01ZB 4111-2005.
The data in table 1 show that:
(1) in terms of viscosity-temperature properties and low-temperature properties: the viscosity indexes of the oils of example 1, example 2 and example 3 are all more than 200, and the pour points are all less than minus 36 ℃, which shows that the oils have excellent viscosity-temperature performance and low-temperature performance. The oil film strength of the oil product at high temperature and the flowability of the oil product at low temperature are ensured.
(2) In terms of rust prevention and corrosion prevention: the corrosion of the copper sheets of the examples 1, 2 and 3 is not more than grade 1, and the liquid-phase rust A method is a rust-free result, which shows that the oil products have excellent rust-proof and corrosion-resistant properties.
(3) In terms of anti-foaming properties: the high-temperature and low-temperature anti-foaming performance of the oil products in the embodiments 1, 2 and 3 is not more than 50/0, which shows that each oil product has excellent anti-foaming performance, can inhibit the generation of oil product foam, and ensures the normal use of the oil product.
(4) In respect of extreme pressure antiwear properties: p of example 2DThe ZMZ value is higher than that of other examples, and the adopted tertiary alkyl primary amine phosphate is more excellent in the aspects of improving the oil bearing capacity and the extreme pressure performance compared with other extreme pressure antiwear agents.
(5) In terms of oxidation stability: the rotary oxygen bomb values of the example 1, the example 2 and the example 3 are all larger than 400min, which shows that the oil product has excellent oxidation stability.
(6) In terms of coke inhibition: the coke forming amount of the coke forming plate tests in the embodiments 1, 2 and 3 is less than 10mg, which shows that the oil product has excellent high-temperature cleaning performance, the coking of the oil product at high temperature can be inhibited, and the service life of the bearing is ensured.
In conclusion, the synthetic oil-gas lubricating oil composition provided by the invention is a synthetic oil-gas lubricating oil composition with excellent performance, great technical difficulty and strong pertinence, and the excellent high-temperature cleaning performance, low-temperature performance, wear resistance, rust prevention and corrosion prevention performance and thermal stability can meet the lubricating requirements of oil-gas lubricating devices of large-scale continuous casting machines and continuous rolling mills in the metallurgical industry. And the product has low production cost, and can produce good economic benefit and social benefit when being applied to an oil-gas lubricating device.
In addition, the lubricating oil composition has excellent viscosity-temperature performance, low-temperature performance, oxidation stability, high-temperature cleaning performance, extreme-pressure wear resistance, good rust resistance, corrosion resistance and foam resistance, can quickly form an oil film, reduce the operating temperature, reduce the high-temperature coking property, reduce the wear among the tooth surfaces of the bearings, and can meet the lubricating requirements of various bearings and gear boxes in an oil-gas lubricating device.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (14)
1. A synthetic lubricating oil composition comprising the following components: 82.0-96.33 wt% of base oil, 3-10 wt% of ester oil, 0.1-3.0 wt% of extreme pressure antiwear additive, 0.02-1.0 wt% of metal deactivator, 0.05-1.0 wt% of antirust corrosion inhibitor, 0.5-3.0 wt% of antioxidant additive and 10-200 mug/g of defoaming agent;
wherein the base oil is water-insoluble polyether polyalkylene glycol, and the ester oil is saturated polyol ester and/or polybasic acid ester.
2. The lubricating oil composition of claim 1, wherein the polyalkylene glycol is a propylene oxide homopolymer.
3. The lubricating oil composition according to claim 1 or 2, wherein the kinematic viscosity of the polyalkylene glycol at 40 ℃ is 90.0 to 352.0mm2Preferably 90 to 242mm/s2。
4. The lubricating oil composition according to claim 1, wherein the ester oil comprises at least one of a saturated trimethylolpropane fatty acid ester, a saturated dipentaerythritol ester having a branched structure, and a meta-phenyl ester.
5. The lubricating oil composition according to claim 1 or 4, wherein the kinematic viscosity of the ester oil at 40 ℃ is 20.0 to 300.0mm2A/s of preferably 150-2。
6. The lubricating oil composition of claim 1, wherein the extreme pressure antiwear additive comprises at least one of a trialkyl phosphate, a triaryl phosphate, a trialkyl thiophosphate, a triaryl thiophosphate, an isomeric alkylphenyl phosphate, a phosphate aromatic amine salt, and a phosphate fatty amine salt.
7. The lubricating oil composition of claim 6, wherein the extreme pressure antiwear additive comprises at least one of tricresyl phosphate, triphenyl thiophosphate, tributyl phosphate, tributyl thiophosphate, trioctyl phosphate, trioctyl thiophosphate, diisooctyl dithiophosphate, diisopropylammonium phosphate octadecylamine salt, isopropylisooctyl ammonium phosphate octadecylamine salt, diisohexyl ammonium phosphate octadecylamine salt, diisooctyl ammonium phosphate octadecylamine salt, butylisooctyl phosphite N, N-dibutylamine salt, bis (2-ethylhexyl) ammonium phosphate N, N-dibutylamine salt, 2, 5-dimercaptothiadiazole-N, N-dibutylamine salt derivative, and tertiary alkyl primary ammonium phosphate salt.
8. The lubricating oil composition of claim 1, wherein the metal deactivator comprises at least one of a benzotriazole di-n-butylamine formaldehyde condensate, a benzotriazole dioctylamine formaldehyde condensate, a thiadiazole dodecyl mercaptan hydrogen peroxide condensate, and a thiadiazole octadecyl mercaptan hydrogen peroxide condensate.
9. The lubricating oil composition of claim 8, wherein the metal deactivator comprises at least one of benzotriazole, tolyltriazole, methylbenzotriazole, sodium tolyltriazole and sodium methylbenzotriazole.
10. The lubricating oil composition according to claim 1, wherein the rust inhibitive agent comprises at least one of amine salts of aliphatic phosphoric acid esters, alkenyl succinic acid half esters, amine salts of alkyl phosphoric acids having dithiophosphoric acid derivatives, barium dinonylnaphthalene carboxylate, N-acyl sarcosine, and imidazole.
11. The lubricating oil composition of claim 1, wherein the antioxidant additive comprises at least one of 2, 6-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, dialkyldiphenylamine and dialkyldithiocarbamate.
12. The lubricating oil composition of claim 11, wherein the antioxidant additive is at least one of a condensate of N-phenyl- α -naphthylamine and butyloctyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and butylnonyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and dioctyldiphenylamine, a condensate of N-phenyl- α -naphthylamine and dinonyldiphenylamine, di-N-butyldithiocarbamate, di-N-octyldithiocarbamate, and di-N-dodecyldithiocarbamate.
13. The lubricating oil composition of claim 1, wherein the anti-foaming agent comprises at least one of a siloxane, an organosilicate, a polyalkylacrylate, and a polyethylene glycol stearyl ether.
14. The lubricating oil composition of claim 13, wherein the silicone is polydimethylsiloxane.
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