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

Abstract

The invention belongs to the technical field of hydraulic oil, and particularly discloses super-lubricity energy-saving anti-wear hydraulic oil and a preparation method thereof. The super-lubricity energy-saving anti-wear hydraulic oil is prepared from the following components in parts by weight: 75 to 90 parts of composite base oil, 5 to 7 parts of viscosity index improver, 3 to 5 parts of friction improver, 1 to 3 parts of pour point depressant, 0.005 to 2 parts of anti-rust preservative, 0.003 to 0.02 part of demulsifying agent, 0.01 to 0.03 part of anti-foaming agent, 0.05 to 1 part of clearing agent, 0.05 to 2 parts of antioxidant and 0.05 to 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 according to the mass ratio of 5: 4: 1. The super-lubricity energy-saving anti-wear hydraulic oil provided by the invention is high in viscosity index, excellent in shear stability, excellent in oxidation stability, excellent in low-temperature performance and small in friction coefficient, the service life of a product is greatly prolonged, the super-lubricity energy-saving and environment-friendly performance requirements are met, and the super-lubricity energy-saving anti-wear hydraulic oil has a wide application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic oil, and in particular relates to a super-lubricating, energy-saving and anti-wear hydraulic oil and a preparation method thereof. Background Art

[0002] Equipment manufacturing is a pillar industry of the national economy. However, the manufacturing industry has high energy consumption. The electricity consumption of my country's manufacturing industry accounts for more than 50% of the total social electricity consumption, of which the electricity consumption of high-tech and equipment manufacturing industry accounts for more than 1 / 5 of the total electricity consumption of the manufacturing industry. A very important reason for this is that in the mechanical system, including motion units, connecting mechanisms and actuators, there is widespread friction and wear between parts, which will cause a lot of energy loss; at the same time, it will also cause the failure of mechanical parts, thus affecting the use effect and life of mechanical equipment. What's more serious is that when lubrication failure and excessive wear occur, it will also cause vicious mechanical accidents.

[0003] In view of the above situation, with the rapid development of the manufacturing economy, the amount of hydraulic oil used in mining, metallurgy, agriculture, construction, engineering construction and other industries has also increased greatly. From the perspective of sustainable development, energy saving of hydraulic systems is particularly important. Super-lubricity technology is an important means to solve friction and wear technology; super-lubricity refers to the lubrication state where the friction between two surfaces is close to zero, but in fact, due to the interference of various factors in the friction system and the limitation of the measurement limit, the lubrication state when the friction coefficient reaches 0.001 or lower is usually called super-lubricity.

[0004] Combining super-lubricity technology with scientifically formulated additives to provide a super-lubricity, energy-saving, and anti-wear hydraulic oil has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the prior art and provide an ultra-lubricating, energy-saving and anti-wear hydraulic oil and a preparation method thereof. Based on this, the first aspect of the present invention provides an ultra-lubricating, energy-saving and anti-wear hydraulic oil, the components of which 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 demulsifier, 0.01-0.03 parts of antifoaming agent, 0.05-1 parts of detergent, 0.05-2 parts of antioxidant, and 0.05-1.5 parts of metal deactivator;

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

[0007] The present invention adopts coal-based base oil, Class II base oil and alkyl naphthalene base oil as base oil, solves the compatibility problem of coal-based base oil and various additives, improves the solubility of various additives (viscosity index improver, friction modifier, rust and corrosion inhibitor, antioxidant and metal deactivator, detergent, demulsifier, antifoaming agent) and their synergistic performance with base oil, enhances compatibility with sealing materials, realizes energy-saving effect of oil products, and prolongs the service life of oil products. The anti-wear hydraulic oil of the present invention has high viscosity index, excellent shear stability, excellent viscosity-temperature performance, excellent oxidation stability, excellent low-temperature performance, good anti-wear performance, extremely high viscosity index, extremely low pour point and excellent lubrication performance, is suitable for wider temperature range of ambient temperature and working temperature, greatly prolongs the service life of the product, and has obvious energy-saving and consumption-reducing effect.

[0008] Among them, the coal-based base oil described in the present invention is a chemical synthetic base oil using coal as raw material, also called CTL base oil, which converts coal into synthesis gas (mainly carbon monoxide CO and hydrogen H2) under high temperature and high pressure, and then converts it into base oil through Fischer-Tropsch synthesis. The base oil produced by this process has higher purity, higher viscosity index, better anti-oxidation and low temperature performance compared to traditional petroleum refining processes. In the present invention, the coal-based base oil is at least one of Lu'an CTL 4, Lu'an CTL6, Lu'an CTL8 and Lu'an CTL10.

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

[0010] The alkyl naphthalene base oil of the present invention is a synthetic base oil, which is prepared by the reaction of polyalphaolefin and naphthalene, and has excellent thermal and oxidative stability, hydrolytic stability, excellent additive solubility, good rubber compatibility and excellent anti-emulsification performance. In the present invention, the alkyl naphthalene base oil is at least one of AN3 and AN5.

[0011] Wherein, the friction modifier is at least one of fatty alcohol, ester, zinc dithiophosphate, benzotriazole fatty ammonium salt, organic phosphate, organic borate, sulfate, sulfur and phosphorus compound. In some preferred implementations, the friction modifier is composed of oleyl alcohol, oleic acid ethylene glycol ester, benzotriazole fatty ammonium salt and zinc dithiophosphate in a mass ratio of 1:1:1:2. The above-mentioned specific friction modifier plays an excellent synergistic effect through scientific proportion matching, has the specific effect of reducing friction coefficient and increasing anti-wear performance, so that the oil product obtains better anti-wear lubricity and low-temperature starting performance; in addition, it can be matched with a detergent (super-based synthetic calcium sulfonate) to further improve the cleaning effect and service life, giving the oil product prepared by the present invention an ultra-slip and energy-saving effect.

[0012] Wherein, the detergent is at least one of petroleum sulfonate, alkylphenol salt, salicylate, succinimide and succinate.

[0013] In some preferred implementations, the viscosity index improver is a comb polymer. Comb polymers as viscosity index improvers have the characteristics of high thickening at high temperatures and low thickening at low temperatures, which can ensure lower viscosity in the conventional operating temperature range and high oil viscosity index; effectively reduce the low-temperature starting torque of the oil, and promote the oil to achieve effective energy saving.

[0014] In the above system, preferred pour point depressants, demulsifiers, antifoaming agents, rust inhibitors, anticorrosives, antioxidants and metal deactivators are added, and through the synergistic effect of the components, excellent lubrication performance and low temperature performance are obtained, which can meet the use requirements under complex hydraulic working conditions and have a long service life, achieving low-carbon energy-saving performance requirements. Among them, the pour point depressant is at least one of alkyl naphthalene, polyesters and polyolefins; the rust and corrosion inhibitor is at least one of dodecenylsuccinic acid, barium petroleum sulfonate, sodium petroleum sulfonate, barium dinonylnaphthalene sulfonate and benzotriazole; the anti-emulsifier is at least one of polyether compounds and tetrapropylene oxide derivatives of amines; the anti-foaming agent is at least one of polysiloxane, polymethacrylic acid derivatives and methyl silicone oil; the antioxidant is at least one of phenyl-α-aniline, alkylated diphenylamine, octyl-butyl diphenylamine, 2,6-di-tert-butyl-p-cresol, thioether phenol and 2,6-di-tert-butylphenol; the metal deactivator is at least one of thiadiazole derivatives, benzotriazole derivatives and methylbenzotriazole derivatives.

[0015] The second aspect of the present invention provides a method for preparing the super-lubricant, energy-saving and anti-wear hydraulic oil, comprising the following steps: at 40°C-55°C, firstly mixing the coal-based base oil, the Class II base oil and the alkyl naphthalene base oil, and then adding the viscosity index improver, the friction modifier, the pour point depressant, the rust inhibitor, the anti-emulsifier, the anti-foaming agent, the detergent, the antioxidant and the metal deactivator, and mixing to obtain the super-lubricant, energy-saving and anti-wear hydraulic oil.

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

[0017] The following will be combined with the embodiments to clearly and completely describe the concept and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0018] Example 1

[0019] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction modifier, 1 part of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 2:5; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company. mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0021] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0022] Example 2

[0023] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction modifier, 1 part of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.

[0024] Among them, the coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a mass ratio of 3:4; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0025] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0026] Example 3

[0027] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 7 parts of viscosity index improver, 3 parts of friction modifier, 1 part of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 4:3; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Yingchuang's polymethacrylate comb polymer Comb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polypropylene The rust and corrosion inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 produced by Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 produced by Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D produced by Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 produced by Pacific Union Petrochemical Company.

[0029] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0030] Example 4

[0031] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction modifier, 2 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 2:5; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company. mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0033] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0034] Example 5

[0035] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction modifier, 2 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.

[0036] Among them, the coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a mass ratio of 3:4; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0037] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0038] Example 6

[0039] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 5 parts of viscosity index improver, 4 parts of friction modifier, 2 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 4:3; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Yingchuang's polymethacrylate comb polymer Comb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polypropylene The rust and corrosion inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 produced by Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 produced by Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D produced by Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 produced by Pacific Union Petrochemical Company.

[0041] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0042] Example 7

[0043] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction modifier, 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 2:5; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company. mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0045] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0046] Example 8

[0047] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction modifier, 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-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.

[0048] Among them, the coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a mass ratio of 3:4; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0049] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0050] Example 9

[0051] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 4 parts of viscosity index improver, 4 parts of friction modifier, 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 4:3; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Yingchuang's polymethacrylate comb polymer Comb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polypropylene The rust and corrosion inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 produced by Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 produced by Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D produced by Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 produced by Pacific Union Petrochemical Company.

[0053] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0054] Example 10

[0055] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction modifier, 3 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 2:5; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company. mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0057] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL4 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0058] Embodiment 11

[0059] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction modifier, 3 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 5:4:1.

[0060] Among them, the coal-based base oil is composed of Lu'an CTL6 and Lu'an CTL10 in a mass ratio of 3:4; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is the comb polymer Co of the polymethacrylate class of Yingchuang Company mb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polyacrylate; the rust inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 of Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 of Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D of Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 of Pacific Union Petrochemical Company.

[0061] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL10 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0062] Example 12

[0063] A super-lubricating, energy-saving and anti-wear hydraulic oil, comprising the following components by weight: 87.83 parts of composite base oil, 3 parts of viscosity index improver, 5 parts of friction modifier, 3 parts of pour point depressant, 0.05 parts of rust 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-based base oil, Class II base oil and alkyl naphthalene 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 mass ratio of 4:3; the second-class base oil is 250N; the alkyl naphthalene base oil is AN3; the viscosity index improver is Yingchuang's polymethacrylate comb polymer Comb8-3108-310; the friction modifier is composed of oleyl alcohol, ethylene glycol oleate, benzotriazole fatty ammonium salt and dialkyl dithiophosphate zinc in a mass ratio of 1:1:1:2; the pour point depressant is polypropylene The rust and corrosion inhibitor is nonyl propoxyacetic acid; the anti-emulsifier is the polyether polymer compound DL32 produced by Jinzhou Chenghua Company; the anti-foaming agent is the polysiloxane defoaming agent T1001 produced by Sinopec; the detergent is the super-based synthetic calcium sulfonate T-106D produced by Jinzhou Chenghua Company; the antioxidant is composed of 2,6-di-tert-butyl-p-cresol and octyl-butyl diphenylamine in a mass ratio of 1:1; the metal deactivator is the benzotriazole derivative T551 produced by Pacific Union Petrochemical Company.

[0065] The preparation method of the above-mentioned super-lubricant, energy-saving and anti-wear hydraulic oil comprises the following steps: at 50°C, Lu'an CTL6 and Lu'an CTL8 are mixed, and Class II base oil 250N and alkyl naphthalene base oil AN3 are added and mixed, and then a viscosity index improver, a friction modifier, a pour point depressant, a rust inhibitor, an anti-corrosion agent, an anti-emulsifier, an anti-foaming agent, a detergent, an antioxidant and a metal deactivator are added, mixed, cooled, filtered, and the anti-wear hydraulic oil is obtained.

[0066] Example 13

[0067] A super-lubricating and energy-saving hydraulic oil, which is different from Example 1 in that a viscosity index improver is polymethacrylate; and the rest is the same as Example 1.

[0068] Embodiment 14

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

[0070] Embodiment 15

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

[0072] Example 16

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

[0074] Embodiment 17

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

[0076] Embodiment 18

[0077] A super-lubricating, energy-saving and anti-wear hydraulic oil, which is different 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, which is different from Example 1 in that: the composite base oil is composed of coal-based 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; and the rest is the same as Example 1.

[0080] Comparative Example 2

[0081] A hydraulic oil, compared with Example 1, the difference is 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; the rest is the same as Example 1.

[0082] Comparative Example 3

[0083] A hydraulic oil, compared with Example 1, the difference is that: the composite base oil is replaced by a single PAO base oil, and the PAO base oil is composed of PAO4 and PAO10 in a mass ratio of 2:5; the rest is the same as Example 1.

[0084] Comparative Example 4

[0085] A hydraulic oil, compared with Example 1, the difference is that: the composite base oil is composed of coal-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 3:2:5; the rest is the same as Example 1.

[0086] Performance tests were conducted on the ultra-lubricating, energy-saving and anti-wear hydraulic oils prepared in Examples 1-18, the hydraulic oils prepared in Comparative Examples 1-4, the commercially available high-lubricity energy-saving hydraulic oil 46 and Mobil DTE high-efficiency hydraulic oil 46, and the results are shown in Tables 1 to 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 can be seen from Tables 1 to 5, the viscosity index, antioxidant performance, pour point, anti-emulsification and other technical indicators of the ultra-lubricating, energy-saving and anti-wear hydraulic oils prepared in Examples 1 to 18 of the present application are better than or equivalent to those of commercially available or imported comparative samples, indicating that the ultra-lubricating, energy-saving and anti-wear hydraulic oil of the present invention has a high viscosity index, a low pour point, excellent anti-wear lubricity, and good low-temperature performance.

[0100] It can be seen from Tables 1 to 5 that the performance indicators of Examples 1-12, Example 18, Examples 13-17 and Comparative Examples 1-4 are compared as follows: Example 1-12> Example 18> Example 13-17> Comparative Example 1-4, indicating that the synergistic effect of the three base oils in scientific proportions, the synergistic effect of the multiple friction modifiers in scientific proportions, and the synergistic effect of the base oil, additives and special structure viscosity index improvers together achieve the energy-saving and anti-wear properties of the products of the present invention.

[0101] By comparing Example 1 with Comparative Examples 1-4, it can be seen that the present invention can improve the solubility of additives in fully synthetic base oils, enhance compatibility with sealing materials, ensure high viscosity index and good shear stability of hydraulic oil, and increase the service life of hydraulic oil through the synergistic effect of three different types of base oils. Adjusting the composite base oil system of the present invention and using different types of base oils, even if synthetic base oils are used, cannot synergize with the various additives in the present invention, and will lead to a significant decrease in performance. In addition, adjusting the ratio of the three base oils in the present invention will lead to reduced performance, but the effect is better than adjusting the composite base oil system. The main reason for this is that the energy-saving effect of the energy-saving hydraulic oil of the present invention is reflected in the synergistic effect of indicators such as the viscosity index, pour point, antioxidant performance and anti-wear performance of the product. The scientific compatibility of base oils is the basic guarantee for meeting the synergistic effect of these three types of additives.

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

[0103] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, it should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.

Claims

1. A super-lubricating, energy-saving and anti-wear hydraulic oil, characterized in that: The components 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 demulsifier, 0.01-0.03 parts of antifoaming 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-based base oil, Class II base oil and alkyl naphthalene base oil in a mass ratio of 5:4:

1.

2. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 1, characterized in that: The friction modifier is at least one of fatty alcohols, esters, zinc dialkyl dithiophosphates, benzotriazole fatty ammonium salts, organic phosphates, organic borates, sulfates, and sulfur-phosphorus compounds.

3. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 2 is characterized in that: 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.

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

5. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 1, characterized in that: The coal-based base oil is at least one of Lu'an CTL4, Lu'an CTL6, Lu'an CTL8 and Lu'an CTL10; and / or, the Class 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.

6. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 1, characterized in that: The pour point depressant is at least one of alkyl naphthalene, polyesters and polyolefins.

7. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 1, characterized in that: The detergent is at least one of petroleum sulfonate, alkylphenol salt, salicylate, succinimide and succinate.

8. The ultra-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 dodecenylsuccinic acid, barium petroleum sulfonate, sodium petroleum sulfonate, barium dinonylnaphthalene sulfonate and benzotriazole.

9. The ultra-lubricating, energy-saving and anti-wear hydraulic oil according to claim 1, characterized in that: The anti-emulsifier is at least one of a polyether compound and a tetrapropylene oxide derivative of an amine; and / or the anti-foaming agent is at least one of a polysiloxane, a polymethacrylic acid derivative and a methyl silicone oil; and / or the antioxidant is at least one of phenyl-α-aniline, alkylated diphenylamine, octyl-butyl diphenylamine, 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 a thiadiazole derivative, a benzotriazole derivative and a methylbenzotriazole derivative.

10. A method for preparing the ultra-lubricating, energy-saving and anti-wear hydraulic oil according to any one of claims 1 to 9, characterized in that: The following steps are involved: Under the condition of 40°C-55°C, the coal-based base oil, the Class II base oil and the alkylnaphthalene base oil are first mixed, and then the viscosity index improver, the friction modifier, the pour point depressant, the rust and corrosion inhibitor, the anti-emulsifier, the anti-foaming agent, the detergent, the antioxidant and the metal deactivator are added and mixed to obtain the super-lubricating, energy-saving and anti-wear hydraulic oil.

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