Super-slippery energy-saving anti-wear hydraulic oil and preparation method thereof

Abstract

The application belongs to the technical field of hydraulic oil, and particularly discloses super-smooth energy-saving anti-wear hydraulic oil and a preparation method thereof.The components of the super-smooth energy-saving anti-wear hydraulic oil include, by weight, 75-90 parts of composite base oil, 5-7 parts of viscosity index improver, 3-5 parts of friction modifier, 1-3 parts of pour point depressant, 0.005-2 parts of rust and corrosion inhibitor, 0.003-0.02 parts of anti-emulsifier, 0.01-0.03 parts of anti-foaming agent, 0.05-1 parts of detergent, 0.05-2 parts of antioxidant, and 0.05-1.5 parts of metal deactivator; the composite base oil is composed of coal base oil, second-class base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.The super-smooth energy-saving anti-wear hydraulic oil has a high viscosity index, excellent shear stability, excellent oxidation stability, excellent low-temperature performance and small friction coefficient, greatly prolongs the service life of the product, meets the requirements of super-smooth energy-saving environmental protection performance, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic oil, and particularly relates to an ultrasmooth energy-saving anti-wear hydraulic oil and a preparation method thereof. BACKGROUND

[0002] The equipment manufacturing industry is a pillar industry of the national economy, however, the manufacturing industry has high energy consumption, and the electricity consumption of the manufacturing industry accounts for more than 50% of the total electricity consumption of the society, wherein the electricity consumption of the high-tech and equipment manufacturing industry accounts for more than 1 / 5 of the total electricity consumption of the manufacturing industry, and a very important reason is that in the mechanical system, including the movement unit, the connecting mechanism and the execution mechanism, there is widespread friction and wear between parts, which causes a large amount of energy loss; meanwhile, it also causes the failure of mechanical parts, thereby affecting the use effect and service life of the mechanical equipment. More seriously, when the lubrication failure and excessive wear occur, it also causes vicious mechanical accidents.

[0003] In view of the above situation, with the rapid development of the manufacturing industry economy, the consumption of the hydraulic oil applied in the mining, metallurgy, agriculture, construction and engineering construction industries has also greatly increased, and from the perspective of sustainable development, the energy saving of the hydraulic system is particularly important. The ultrasmooth technology is an important means to solve the friction and wear technology; the ultrasmooth refers to the lubrication state in which the friction between two surfaces is close to zero, but in practice, due to the interference of various factors of the friction system and the limitation of the measurement limit, the lubrication state in which the friction coefficient reaches the order of 0.001 or lower is usually called ultrasmooth.

[0004] In combination with the ultrasmooth technology, by scientifically matching the additives, it is an urgent technical problem for the person skilled in the art to provide an ultrasmooth energy-saving anti-wear hydraulic oil. SUMMARY

[0005] The purpose of the application is to solve the problems of the prior art, and provide an ultrasmooth energy-saving anti-wear hydraulic oil and a preparation method thereof, and based on this, the first aspect of the application provides an ultrasmooth energy-saving anti-wear hydraulic oil, and the components thereof include, by weight, 75-90 parts of a composite base oil, 5-7 parts of a viscosity index improver, 3-5 parts of a friction modifier, 1-3 parts of a pour point depressant, 0.005-2 parts of an antirust and anticorrosion agent, 0.003-0.02 parts of an antiemulsifier, 0.01-0.03 parts of an antifoaming agent, 0.05-1 parts of a detergent, 0.05-2 parts of an antioxidant, and 0.05-1.5 parts of a metal deactivator.

[0006] The composite base oil is composed of the coal-based base oil, the second-class base oil and the alkyl naphthalene base oil in a mass ratio of 5:4:1.

[0007] The application solves the adaptability problem of coal-based base oil and various additives by adopting the coal-based base oil, the second type base oil and the alkyl naphthalene base oil as the base oil, and improves the solubility of various additives (viscosity index improver, friction modifier, anti-rust and anticorrosive agent, antioxidant and metal deactivator, detergent, anti-emulsifier, anti-foaming agent) and the synergistic performance of the base oil, enhances the compatibility with the sealing material, realizes the energy saving effect of the oil product, and prolongs the service life of the oil product.

[0008] The coal-based base oil is a chemical synthetic base oil taking coal as the raw material, also called CTL base oil, which is converted into synthetic gas (main components are carbon monoxide CO and hydrogen H2) under high temperature and high pressure, and is converted into base oil through Fischer-Tropsch synthesis. Compared with the traditional petroleum refining process, the base oil produced by the process has higher purity, higher viscosity index, better oxidation resistance and low temperature performance. In the application, the coal-based base oil is at least one of Lu'an CTL 4, Lu'an CTL 6, Lu'an CTL 8 and Lu'an CTL 10.

[0009] The second type base oil is a second type hydrogenated base oil, which is produced by a combination process of hydrogen process and solvent process, can change the chemical molecular structure of the raw material in performance, and can change the original hydrocarbon structure after hydrogenation, can improve the oxidation resistance, reduce the impurities of the base oil, and improve the thermal stability, has better oxidation resistance, high flash point and high viscosity index compared with the first type base oil. In the application, the second type base oil is at least one of 150N, 250N and 500N.

[0010] The alkyl naphthalene base oil is a synthetic base oil prepared by the reaction of poly-alpha olefin and naphthalene, has excellent thermal and oxidation stability, hydrolysis stability, excellent additive solubility, good rubber compatibility and excellent anti-emulsification performance. In the application, the alkyl naphthalene base oil is at least one of AN3 and AN5.

[0011] The friction modifier is at least one of fatty alcohol, ester, zinc dialkyldithiophosphate, benzotriazole fatty ammonium salt, organic phosphate ester, organic borate, sulfate ester, and sulfur phosphorus compound. In some preferred embodiments, the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyldithiophosphate in a mass ratio of 1:1:1:2. The specific friction modifier has excellent synergistic effect by scientific proportioning, and has the specific functions of reducing friction coefficient and increasing wear resistance, so that the oil has better wear resistance and low temperature starting property. In addition, the friction modifier can cooperate with the detergent (ultra-alkaline synthetic calcium sulfonate) to further improve the cleaning effect and service life, and endow the oil prepared by the application with the effects of super-smooth and energy-saving.

[0012] The detergent is at least one of petroleum sulfonate, alkyl phenate, salicylate, succinimide, and succinate.

[0013] In some preferred embodiments, the viscosity index improver is a comb polymer. The comb polymer as the viscosity index improver has the characteristics of high thickening at high temperature and low thickening at low temperature, can ensure lower viscosity in the conventional operating temperature range, has high viscosity index of the oil, effectively reduces the low temperature starting torque of the oil, and promotes the effective energy-saving effect of the oil.

[0014] In the above system, the preferred pour point depressant, anti-emulsifier, antifoaming agent, rust and corrosion inhibitor, antioxidant, and metal deactivator are added, and excellent lubricating performance and low temperature performance are obtained through the mutual synergistic effect of the components, which can meet the use requirements under complex hydraulic working conditions and has long service life and low carbon energy-saving performance requirements. The pour point depressant is at least one of alkyl naphthalene, polyester, and polyolefin. The rust and corrosion inhibitor is at least one of dodecenyl succinic acid, barium petroleum sulfonate, sodium petroleum sulfonate, barium dinonylnaphthalene sulfonate, and benzotriazole. The anti-emulsifier is at least one of polyether compound and amine tetrapropylene oxide derivative. The antifoaming agent is at least one of polysiloxane, polymethacrylic acid derivative, and methyl silicone oil. The antioxidant is at least one of phenyl-alpha-aniline, alkylated diphenylamine, octyl-butyl diphenylamine, 2,6-di-tert-butyl-p-cresol, thioether phenol, and 2,6-di-tert-butyl phenol. The metal deactivator is at least one of thiadiazole derivative, benzotriazole derivative, and methyl benzotriazole derivative.

[0015] The second aspect of the present invention provides a method for preparing the super-lubricating, energy-saving, and anti-wear hydraulic oil, comprising the following steps: under conditions of 40℃-55℃, first mixing the coal-based base oil, the Group II base oil, and the alkylnaphthalene base oil, and then adding the viscosity index improver, the friction improver, the pour point depressant, the rust and corrosion inhibitor, the demulsifier, the antifoaming agent, the detergent, the antioxidant, and the metal deactivator, and mixing them to obtain the super-lubricating, energy-saving, and anti-wear hydraulic oil.

[0016] The beneficial effects of this invention are as follows: the super-lubricating, energy-saving, and anti-wear hydraulic oil provided by this invention has a high viscosity index, excellent shear stability, excellent oxidation stability, excellent low-temperature performance, and a low coefficient of friction, which greatly extends the service life of the product, meets the requirements of super-lubricating, energy-saving, and environmentally friendly performance, and has broad application prospects. Detailed Implementation

[0017] The following will provide a clear and complete description of the concept and technical effects of the present invention in conjunction with embodiments, so as to fully understand the purpose, solution and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0018] Example 1

[0019] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction improver, 1 part of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0020] The coal-based base oil is composed of Lu'an CTL4 and Lu'an CTL10 in a 2:5 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0021] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0022] Example 2

[0023] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction improver, 1 part of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0024] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a 3:4 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0025] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0026] Example 3

[0027] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction improver, 1 part of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0028] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL8 in a 4:3 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Comb8-3108-310, a comb-like polymer of polymethyl methacrylate from Yingchuang Company; the friction improver is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a 1:1:1:2 mass ratio; and the pour point depressant is polypropylene. Acrylic acid ester; rust and corrosion inhibitor is nonylpropoxyacetic acid; demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; antifoaming agent is T1001, a polysiloxane defoaming agent from Sinopec; detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a 1:1 mass ratio; metal deactivating agent is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0029] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0030] Example 4

[0031] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction improver, 2 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0032] The coal-based base oil is composed of Lu'an CTL4 and Lu'an CTL10 in a 2:5 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0033] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0034] Example 5

[0035] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction improver, 2 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0036] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a 3:4 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0037] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0038] Example 6

[0039] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction improver, 2 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0040] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL8 in a 4:3 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Comb8-3108-310, a comb-like polymer of polymethyl methacrylate from Yingchuang Company; the friction improver is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a 1:1:1:2 mass ratio; and the pour point depressant is polypropylene. Acrylic acid ester; rust and corrosion inhibitor is nonylpropoxyacetic acid; demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; antifoaming agent is T1001, a polysiloxane defoaming agent from Sinopec; detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a 1:1 mass ratio; metal deactivating agent is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0041] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0042] Example 7

[0043] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0044] The coal-based base oil is composed of Lu'an CTL4 and Lu'an CTL10 in a 2:5 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0045] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0046] Example 8

[0047] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0048] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a 3:4 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0049] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0050] Example 9

[0051] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0052] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL8 in a 4:3 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Comb8-3108-310, a comb-like polymer of polymethyl methacrylate from Yingchuang Company; the friction improver is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a 1:1:1:2 mass ratio; and the pour point depressant is polypropylene. Acrylic acid ester; rust and corrosion inhibitor is nonylpropoxyacetic acid; demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; antifoaming agent is T1001, a polysiloxane defoaming agent from Sinopec; detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a 1:1 mass ratio; metal deactivating agent is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0053] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0054] Example 10

[0055] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0056] The coal-based base oil is composed of Lu'an CTL4 and Lu'an CTL10 in a 2:5 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0057] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0058] Example 11

[0059] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0060] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a 3:4 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; and the viscosity index improver is Co, a comb-like polymer of polymethyl methacrylate from Yingchuang Company. mb8-3108-310; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust and corrosion inhibitor is nonylpropoxyacetic acid; the demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; the antifoaming agent is T1001, a polysiloxane defoamer from Sinopec; the detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a mass ratio of 1:1; the metal deactivator is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0061] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0062] Example 12

[0063] A super-lubricating, energy-saving, and anti-wear hydraulic oil comprises, by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction improver, 3 parts of pour point depressant, 0.05 parts of rust and corrosion inhibitor, 0.01 parts of demulsifier, 0.01 parts of antifoaming agent, 0.05 parts of detergent, 1 part of antioxidant, and 0.05 parts of metal deactivator; the composite base oil is composed of coal-derived base oil, Group II base oil, and alkylnaphthalene base oil in a mass ratio of 5:4:1.

[0064] The coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL8 in a 4:3 mass ratio; the Group II base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Comb8-3108-310, a comb-like polymer of polymethyl methacrylate from Yingchuang Company; the friction improver is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt, and zinc dialkyl dithiophosphate in a 1:1:1:2 mass ratio; and the pour point depressant is polypropylene. Acrylic acid ester; rust and corrosion inhibitor is nonylpropoxyacetic acid; demulsifier is DL32, a polyether polymer compound from Jinzhou Chenghua Company; antifoaming agent is T1001, a polysiloxane defoaming agent from Sinopec; detergent is T-106D, a super-alkaline synthetic calcium sulfonate from Jinzhou Chenghua Company; antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyldiphenylamine in a 1:1 mass ratio; metal deactivating agent is T551, a benzotriazole derivative from Pacific United Petrochemical Company.

[0065] The preparation method of the above-mentioned super-lubricating, energy-saving, and anti-wear hydraulic oil includes the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Group II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed. Then, viscosity index improver, friction improver, pour point depressant, rust and corrosion inhibitor, demulsifier, antifoaming agent, detergent, antioxidant, and metal deactivator are added, mixed, cooled, and filtered to obtain the anti-wear hydraulic oil.

[0066] Example 13

[0067] A super-lubricating and energy-saving hydraulic oil, which differs from Example 1 in that: the viscosity index improver is polymethyl methacrylate; otherwise, it is the same as Example 1.

[0068] Example 14

[0069] A super-lubricating and energy-saving hydraulic oil, which differs from Example 1 in that: the viscosity index improver is an ethylene-propylene copolymer; otherwise, it is the same as Example 1.

[0070] Example 15

[0071] A super-slippery, energy-saving, and anti-wear hydraulic oil differs from Example 1 in that: the friction modifier is composed of oleyl alcohol and ethylene glycol oleate in a 1:1 mass ratio; the rest is the same as Example 1.

[0072] Example 16

[0073] A super-slippery, energy-saving, and anti-wear hydraulic oil differs from Example 1 in that: the friction modifier is composed of benzotriazole fatty ammonium salt and zinc dialkyl dithiophosphate in a mass ratio of 1:2; the rest is the same as in Example 1.

[0074] Example 17

[0075] A super-lubricating, energy-saving, and anti-wear hydraulic oil differs from Example 1 in that: the friction modifier is composed of oleyl alcohol, V289 organic borate ester from Vanderbilt, triazole fatty ammonium salt, and molybdenum dialkyl dithiophosphate P1001 from Pacific Petrochemical Company in a mass ratio of 1:1:1:2; the rest is the same as in Example 1.

[0076] Example 18

[0077] A super-slippery, energy-saving, and anti-wear hydraulic oil differs from Example 1 in that the detergent is succinate; the rest is the same as Example 1.

[0078] Comparative Example 1

[0079] A hydraulic oil differs from Example 1 in that: the composite base oil is composed of coal-derived base oil, PAO base oil and alkylnaphthalene base oil in a mass ratio of 5:4:1; the PAO base oil is composed of PAO4 and PAO10 in a mass ratio of 2:5; otherwise, it is the same as Example 1.

[0080] Comparative Example 2

[0081] A hydraulic oil differs from Example 1 in that: the composite base oil is composed of Yubase 6 base oil, PAO base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1; otherwise, it is the same as Example 1.

[0082] Comparative Example 3

[0083] A hydraulic oil differs from Example 1 in that the composite base oil is replaced with a single PAO base oil, which is composed of PAO4 and PAO10 in a mass ratio of 2:5; otherwise, it is the same as Example 1.

[0084] Comparative Example 4

[0085] A hydraulic oil differs from Example 1 in that: the composite base oil is composed of coal-derived base oil, Group II base oil and alkylnaphthalene base oil in a mass ratio of 3:2:5; the rest is the same as Example 1.

[0086] The performance of the super-lubricating, energy-saving, and anti-wear hydraulic oils prepared in Examples 1-18, the hydraulic oils prepared in Comparative Examples 1-4, commercially available high-lubricity, energy-saving hydraulic oil 46, and Mobil DTE high-efficiency hydraulic oil 46 were tested, and the results are shown in Tables 1-5.

[0087] Table 1

[0088]

[0089] Table 2

[0090]

[0091]

[0092] Table 3

[0093]

[0094] Table 4

[0095]

[0096] Table 5

[0097]

[0098]

[0099] As shown in Tables 1-5, the viscosity index, oxidation resistance, pour point, and demulsification properties of the super-lubricating, energy-saving, and anti-wear hydraulic oils prepared in Examples 1-18 of this application are superior to or equivalent to those of commercially available or imported comparative samples. This indicates that the super-lubricating, energy-saving, and anti-wear hydraulic oil of this invention has a high viscosity index, low pour point, excellent anti-wear lubrication properties, and good low-temperature performance.

[0100] As shown in Tables 1-5, the performance indicators of Examples 1-12, 18, and 13-17 compared with Comparative Examples 1-4 are as follows: Examples 1-12 > Examples 18 > Examples 13-17 > Comparative Examples 1-4. This indicates that the scientific ratio of the three base oils in this invention synergistically enhances the effect, the scientific ratio of various friction modifiers enhances the effect, and the synergistic effect of the base oil, additives, and special structural viscosity index improvers jointly achieves the energy-saving and anti-wear performance of the product of this invention.

[0101] Comparing Example 1 with Comparative Examples 1-4, it can be seen that the present invention, through the synergistic effect of three different types of base oils, can improve the solubility of additives in fully synthetic base oils, enhance compatibility with sealing materials, ensure a high viscosity index and good shear stability of hydraulic oil, and increase the service life of hydraulic oil. Adjusting the composite base oil system of the present invention, using different types of base oils, even synthetic base oils, cannot achieve synergistic effects with the various additives in the present invention, and all will lead to a significant decrease in performance. Furthermore, adjusting the proportions of the three base oils in the present invention will also lead to a decrease in performance, but the effect is better than adjusting the composite base oil system. This is mainly because the energy-saving effect of the energy-saving hydraulic oil of the present invention is reflected in the synergistic effect of indicators such as viscosity index, pour point, antioxidant properties, and anti-wear properties. The scientific formulation of the base oils is the fundamental guarantee for meeting the synergistic effect of these three types of additives.

[0102] As can be seen from the results of Example 1 and Comparative Examples 1-4, the present invention, through the synergistic combination of a specific friction modifier, a viscosity index modifier with a special structure, and a specific pour point depressant, can further and effectively reduce friction performance, improve viscosity index and low-temperature performance, and has good thermal stability and energy-saving performance.

[0103] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the above-described embodiments. Any embodiment that achieves the technical effects of the present invention using the same means should fall within the protection scope of the present invention. Within the protection scope of the present invention, various modifications and variations can be made to the technical solutions and / or implementation methods.

Claims

1. A super-lubricating, energy-saving, and anti-wear hydraulic oil, characterized in that, Its components, by weight, include: 75-90 parts of complex base oil, 5-7 parts of viscosity index improver, 3-5 parts of friction improver, 1-3 parts of pour point depressant, 0.005-2 parts of rust and corrosion inhibitor, 0.003-0.02 parts of demulsifier, 0.01-0.03 parts of antifoaming agent, 0.05-1 part of detergent, 0.05-2 parts of antioxidant, and 0.05-1.5 parts of metal deactivator; The composite base oil is composed of coal-derived base oil, Group II base oil and alkylnaphthalene base oil in a mass ratio of 5:4:1; The friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and zinc dialkyl dithiophosphate in a mass ratio of 1:1:1:

2. The detergent is superalkalinity synthetic calcium sulfonate T-106D.

2. The super-lubricating, energy-saving, and anti-wear hydraulic oil according to claim 1, characterized in that, The viscosity index improver is a comb-like polymer.

3. The super-lubricating, energy-saving, and anti-wear hydraulic oil according to claim 1, characterized in that, The coal-derived base oil is at least one of Lu'an CTL4, Lu'an CTL6, Lu'an CTL8 and Lu'an CTL10; and / or, the Group II base oil is at least one of 150N, 250N and 500N; and / or, the alkylnaphthalene base oil is at least one of AN3 and AN5.

4. The super-lubricating, energy-saving, and anti-wear hydraulic oil according to claim 1, characterized in that, The pour point depressant is at least one of alkylnaphthalene, polyester, and polyolefin.

5. The super-lubricating, energy-saving, and anti-wear hydraulic oil according to claim 1, characterized in that, The rust and corrosion inhibitor is at least one of dodecenyl succinic acid, barium petroleum sulfonate, sodium petroleum sulfonate, barium dinonylnaphthalene sulfonate, and benzotriazole.

6. The super-lubricating, energy-saving, and anti-wear hydraulic oil according to claim 1, characterized in that, The demulsifier is at least one of polyether compounds and tetraoxypropylene derivatives of amines; and / or, the antifoaming agent is at least one of polysiloxane, polymethacrylic acid derivatives and methyl silicone oil; and / or, the antioxidant is at least one of phenyl-α-aniline, alkylated diphenylamine, octyl-butyldiphenylamine, 2,6-di-tert-butyl-p-cresol, thioether phenol and 2,6-di-tert-butylphenol; and / or, the metal deactivator is at least one of thiadiazole derivatives, benzotriazole derivatives and methylbenzotriazole derivatives.

7. A method for preparing a super-lubricating, energy-saving, and anti-wear hydraulic oil as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Under conditions of 40 ℃-55 ℃, the coal-based base oil, the Group II base oil and the alkylnaphthalene base oil are first mixed evenly, and then the viscosity index improver, the friction improver, the pour point depressant, the rust and corrosion inhibitor, the demulsifier, the antifoaming agent, the detergent, the antioxidant and the metal deactivator are added and mixed evenly to obtain the super-lubricating energy-saving anti-wear hydraulic oil.

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