阅读说明：本技术 一种纳米合成润滑油及其制备方法 (Nano synthetic lubricating oil and preparation method thereof ) 是由 麻义林 于 2020-11-27 设计创作，主要内容包括：本发明公开了一种纳米合成润滑油,其特征在于,是由如下按重量份计的各组分组成：端羟基超支化纳米杂化聚合物HB-SiO2 5-8份、有机纳米材料1-3份、3-羟基-1-金刚烷基甲基丙烯酸酯/甲基丙烯酸(1H,1H,7H-全氟庚基)酯/聚乙二醇单烯丙基醚/二甲基-乙烯基磷酸酯共聚物10-15份、基础油60-75份、抗氧剂0.3-0.8份、分散剂0.5-1份、抗磨剂0.2-0.5份。本发明还公开了一种所述纳米合成润滑油的制备方法。本发明公开的纳米合成润滑油综合性能佳,润滑效果显著,抗磨损和抗氧化性能好,性能稳定性佳,功效多。(The invention discloses a nano synthetic lubricating oil which is characterized by comprising the following components in parts by weight: the anti-wear paint comprises, by weight, 60-75 parts of base oil, 0.3-0.8 part of an antioxidant, 0.5-1 part of a dispersing agent and 0.2-0.5 part of an anti-wear agent, wherein the nano-hybrid polymer is HB-SiO 25-8 parts, the nano-organic material is 1-3 parts, the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer is 10-15 parts. The invention also discloses a preparation method of the nano synthetic lubricating oil. The nano synthetic lubricating oil disclosed by the invention has the advantages of good comprehensive performance, obvious lubricating effect, good abrasion resistance and oxidation resistance, good performance stability and multiple effects.)

1. The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂5-8 parts of organic nano material, 1-3 parts of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 10-15 parts of base oil, 0.3-0.8 part of antioxidant, 0.5-1 part of dispersant and 0.2-0.5 part of antiwear agent.

2. The nano-synthetic lubricating oil of claim 1, wherein the antiwear agent is a zinc dialkyl thiosulfate salt.

3. The nano-synthetic lubricating oil of claim 1, wherein the dispersant is at least one of triethylhexylphosphoric acid, vinyl bis-stearamide, stearic acid monoglyceride, polyethylene glycol, and monoalkenyl succinimide.

4. The nano-synthetic lubricant according to claim 1, wherein the antioxidant is at least one of 2, 6-tertiary butyl-4-methylphenol, bis (3, 5-tertiary butyl-4-hydroxyphenyl) sulfide, pentaerythrityl tetrakis [ β - (3, 5-tertiary butyl-4-hydroxyphenyl) propionate ], bisdodecanol ester, and bistetradecol ester.

5. The nano-synthetic lubricant oil according to claim 1, wherein the preparation method of the 3-hydroxy-1-adamantyl methacrylate/1H, 7H-perfluoroheptyl methacrylate/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the steps of: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high-boiling-point solvent, stirring and reacting for 3-5 hours at 65-75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 3-7 times by using ethanol, and finally, removing water by rotary evaporation to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

6. The nano-synthetic lubricating oil of claim 5, wherein the mass ratio of the 3-hydroxy-1-adamantyl methacrylate to the (1H,1H, 7H-perfluoroheptyl) methacrylate to the polyethylene glycol monoallyl ether to the dimethyl-vinyl phosphate ester to the initiator to the high boiling point solvent is 1:2:3:1 (0.05-0.07) to (25-35).

7. The nano-synthetic lubricating oil of claim 5, wherein the introducing agent is at least one of azobisisobutyronitrile, azobisisoheptonitrile; the inert gas is any one of nitrogen, helium, neon and argon; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone.

8. A method of preparing a nano-synthetic lubricating oil according to any one of claims 1 to 7, comprising the steps of: uniformly stirring the components in parts by weight, and then placing the components in a KH-700 type ultrasonic oscillator to oscillate for 10-15 minutes under the power of 550-650W to obtain the nano synthetic lubricating oil.

Technical Field

The invention relates to the technical field of lubricating oil, in particular to nano synthetic lubricating oil and a preparation method thereof.

Background

The material is the material basis for human beings to live and develop, is the core of all technological advances, is the lead of high and new technology development and social modernization, and is a reflection and mark of national science and technology and industrial level. In the process of using the material, a large amount of mechanical energy is lost due to friction between the surface of the material and an interface, and mechanical parts are easy to wear, so that lubricating oil needs to be added and replaced regularly in the operation process of the machine. The lubricating oil is liquid or semisolid lubricating oil used for reducing friction on mechanical parts and protecting machinery and workpieces, mainly plays roles of lubricating, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like, is blood for operation of modern industry and national defense industry, and has very wide application in the industries of aviation, machining, metallurgy, automobile, transportation, coal and the like.

The lubricating oil is generally composed of base oil and additives, wherein the base oil is the main component of the lubricating oil and determines the basic properties of the lubricating oil, the additives make up for and improve the deficiencies in the performance aspect of the base oil, and endow the lubricating oil with certain new performances, and the types, the quality and the addition proportion of the additives directly influence the service performance of the lubricating oil. At present, the base oil in the market is basically divided into three types, namely mineral oil, semisynthetic oil and synthetic oil, wherein the molecules of the synthetic oil are arranged orderly, and the capability of resisting external variables is naturally strong, so that the base oil has better physique, and the capabilities of thermal stability, oxidation resistance and viscosity change resistance are naturally stronger than those of the mineral oil and the semisynthetic oil, and is the first choice of the raw material of the lubricating oil.

The existing synthetic lubricating oil has the advantages of unobvious effects on reducing mechanical vibration noise, reducing oil temperature, resisting abrasion and oxidation, high price, single effect, non-ideal use effect, easy serious damage to mechanical parts after long-term use and possible accidents in serious cases. As an improvement, the market discloses that the nano material is added into the synthetic lubricating oil to improve the comprehensive performance of the lubricating oil and greatly improve various performances of the lubricating oil. However, the nano material has extremely high chemical stability, the surface of the nano material is in an inert state, and the interaction with other media is weak; and strong van der waals force exists among the nano materials, so that the dispersibility of the nano materials is poor, and the nano materials are easy to agglomerate.

The Chinese patent with the application number of 201410061081.6 relates to a nano synthetic lubricating oil and a preparation method thereof, wherein the nano synthetic lubricating oil comprises the following raw materials in percentage by weight: 60-90% of lubricating oil base oil, 0.1-0.6% of nano material, 3-13% of antioxidant, 4-16% of dispersant, 1-5% of tackifier and 1.9-5.4% of antiwear agent; the nano synthetic lubricating oil is prepared by mixing and refining lubricating oil base oil, a nano material, an antioxidant, a dispersant, a tackifier and an antiwear agent through a high-shear emulsification production line. The nano synthetic lubricating oil can solve the comprehensive technology of energy conservation, emission reduction, environmental protection and efficiency improvement of internal combustion engines and automobile engines. However, because a large amount of dispersant is added, and the added substances are more, the stability and durability of the lubricating oil are poor, and the anti-wear performance is also influenced to a certain extent.

Therefore, the development of a nano synthetic lubricating oil with good comprehensive performance, obvious lubricating effect, good abrasion resistance and oxidation resistance, good performance stability and multiple effects is imperative.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the nano synthetic lubricating oil and the preparation method thereof, and the preparation method is simple and easy to implement, has low dependence on equipment and high production efficiency and finished product qualification rate, and is suitable for continuous large-scale production; the nano synthetic lubricating oil prepared by the preparation method has the advantages of good comprehensive performance, obvious lubricating effect, good abrasion resistance and oxidation resistance, good performance stability and multiple effects.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂5-8 parts of organic nano material, 1-3 parts of 3-hydroxy-1-adamantyl methyl propyl10-15 parts of olefine acid ester/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 60-75 parts of base oil, 0.3-0.8 part of antioxidant, 0.5-1 part of dispersing agent and 0.2-0.5 part of antiwear agent.

Preferably, the antiwear agent is a zinc dialkyl thiosulfate salt.

Preferably, the dispersant is at least one of triethylhexylphosphoric acid, vinyl bis stearamide, stearic acid monoglyceride, polyethylene glycol and monoalkenyl succinimide.

Preferably, the antioxidant is at least one of 2, 6-tertiary butyl-4-methylphenol, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether, tetra [ beta- (3, 5-tertiary butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, bisdodecyl alcohol ester and bistetradecyl alcohol ester.

Preferably, the base oil is synthetic ester base oil with the trademark Palmester 3970, and is purchased from Shenzhen Saien trade company.

Preferably, the preparation method of the 3-hydroxy-1-adamantyl methacrylate/1H, 7H-perfluoroheptyl methacrylate/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high-boiling-point solvent, stirring and reacting for 3-5 hours at 65-75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 3-7 times by using ethanol, and finally, removing water by rotary evaporation to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate to the methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester to the polyethylene glycol monoallyl ether to the dimethyl-vinyl phosphate to the initiator to the high-boiling-point solvent is 1:2:3:1 (0.05-0.07) to (25-35).

Preferably, the introducing agent is at least one of azobisisobutyronitrile and azobisisoheptonitrile; the inert gas is any one of nitrogen, helium, neon and argon; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone.

Preferably, the organic nano material is a one-dimensional nano material 2,4, 5-triphenyl imidazole; see for preparation: information.2008, 20, 2747-.

Preferably, the hydroxyl-terminated hyperbranched nano-hybrid polymer HB-SiO₂The preparation method is shown in the first embodiment of Chinese patent application No. 201910425260.6.

Another object of the present invention is to provide a method for preparing the nano synthetic lubricating oil, which comprises the following steps: uniformly stirring the components in parts by weight, and then placing the components in a KH-700 type ultrasonic oscillator to oscillate for 10-15 minutes under the power of 550-650W to obtain the nano synthetic lubricating oil.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

(1) the preparation method of the nano synthetic lubricating oil provided by the invention is simple and feasible, has low dependence on equipment and high production efficiency and finished product qualification rate, and is suitable for continuous large-scale production.

(2) The nanometer synthetic lubricating oil overcomes the defects that the existing synthetic lubricating oil has unobvious effects on the aspects of reducing mechanical vibration noise, reducing oil temperature, resisting wear and oxidation, is expensive in price, has single effect mostly, is not ideal in use effect, is easy to cause serious damage to mechanical parts after long-term use, and is possible to cause accidents in serious cases; the defects that the stability, durability and wear resistance of the nano lubricating oil on the market need to be further improved are overcome, and the prepared nano synthetic lubricating oil has good comprehensive performance, obvious lubricating effect, good abrasion resistance and oxidation resistance, good performance stability and multiple effects through the synergistic effect of the components.

(3) The nano synthetic lubricating oil provided by the invention is added with the hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂In cooperation with organic nanomaterialsThe adsorption layer has long-range repulsive force, so that the friction surfaces are separated, the nano core plays a role of anchoring the organic molecular chains outside the core, the surface adsorption layer is more stable, and the organic hyperbranched polymer molecular chains have self-repairability due to the dynamic relaxation characteristic like a molecular brush; compared with the simple addition of inorganic nanoparticles in the prior art, the dispersibility of the nanoparticles is improved, a large amount of dispersing agent is not required to be added, and the stability, the durability and the wear resistance are effectively improved; secondly, the addition of the organic nano material can enhance the wear resistance, greatly reduce and prevent the early wear and boundary wear of each machine part of the engine, can quickly adsorb and wrap the colloid, can achieve the ideal effects of saving oil, reducing emission, reducing wear and reducing noise and prolonging the service life of the engine when applied to the engine. Hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂Compared with the traditional surface modified nano material, the hyperbranched polymer structure and the polyhydroxy structure can improve the compatibility with other components, so that the dispersion is uniform, and meanwhile, the hyperbranched polymer structure and the polyhydroxy structure can form a protective film through the bridging effect and inhibit the reaction of a cathode and an anode on the surface of a mechanical part, so that the corrosion speed is slowed down, and the corrosion resistance effect is achieved.

(4) The nano synthetic lubricating oil provided by the invention is added with 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, combines the advantages of fluorine-containing films, adamantyl ester, polyether and phosphate ester structures, and has good chemical stability under the multiple actions of electronic effect, steric effect and conjugation effect, high thermal oxidation stability, wide use temperature, good flame resistance, high radiation resistance stability, excellent wear resistance and scratch resistance, good low-temperature fluidity and low volatility, can be mixed and dissolved with synthetic oil, can be used in high and low temperature environments, has excellent thermal stability and is less in high-temperature decomposition; and has good shear stability.

(5) The nano synthetic lubricating oil provided by the invention does not contain components such as halogen, acid, alkali and the like which cause corrosion to mechanical parts, and is beneficial to improving the corrosion resistance; all the components have synergistic effect and can improve the comprehensive performance of the lubricating oil.

Detailed Description

In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention; the base oil related in the embodiment of the invention is synthetic ester base oil with the trademark Palmester 3970, and is purchased from Shenzhen Saien trade company; the organic nano material is a one-dimensional nano material 2,4, 5-triphenyl imidazole; see for preparation: information.2008, 20, 2747-; the hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂The preparation method is shown in the first embodiment of Chinese invention patent with the application number of 201910425260.6; other raw materials were all purchased commercially.

Example 1

The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂5 parts of organic nano material, 1 part of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 10 parts of base oil, 0.3 part of antioxidant, 0.5 part of dispersant and 0.2 part of antiwear agent.

The antiwear agent is zinc dialkyl thiosulfate; the dispersant is triethyl hexyl phosphoric acid; the antioxidant is 2, 6-tertiary butyl-4-methylphenol.

The preparation method of the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high boiling point solvent, stirring and reacting for 3 hours at 65 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 3 times, and finally removing water by rotary evaporation to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate, an initiator and a high-boiling-point solvent is 1:2:3:1:0.05: 25; the introducing agent is azobisisobutyronitrile; the inert gas is nitrogen; the high boiling point solvent is dimethyl sulfoxide.

The preparation method of the nano synthetic lubricating oil is characterized by comprising the following steps: the components are evenly stirred according to the weight portion, and then are placed in a KH-700 type ultrasonic oscillator to be oscillated for 10 minutes under the power of 550W, so that the nano synthetic lubricating oil is obtained.

Example 2

The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂6 parts of organic nano material, 1.5 parts of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 11 parts of base oil, 0.4 part of antioxidant, 0.6 part of dispersant and 0.3 part of antiwear agent.

The antiwear agent is zinc dialkyl thiosulfate; the dispersing agent is vinyl bis stearamide; the antioxidant is bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether.

The preparation method of the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high boiling point solvent, stirring and reacting for 3.5 hours at 68 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 4 times by using ethanol, and finally performing rotary evaporation to remove water to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate, the methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, the polyethylene glycol monoallyl ether, the dimethyl-vinyl phosphate, the initiator and the high-boiling-point solvent is 1:2:3:1:0.055: 27.

The introducing agent is azobisisoheptonitrile; the inert gas is helium; the high boiling point solvent is N, N-dimethylformamide.

The preparation method of the nano synthetic lubricating oil is characterized by comprising the following steps: the components are evenly stirred according to the weight portion, and then are placed in a KH-700 type ultrasonic oscillator to be oscillated for 11 minutes under the power of 570W, so that the nano synthetic lubricating oil is obtained.

Example 3

The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂6.5 parts of organic nano material, 2 parts of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 13 parts of base oil, 0.6 part of antioxidant, 0.7 part of dispersing agent and 0.35 part of antiwear agent.

The antiwear agent is zinc dialkyl thiosulfate; the dispersant is stearic acid monoglyceride and polyethylene glycol; the antioxidant is tetra [ beta- (3, 5-tertiary butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.

The preparation method of the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high boiling point solvent, stirring and reacting for 4 hours at 70 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 5 times, and finally performing rotary evaporation to remove water to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate, the methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, the polyethylene glycol monoallyl ether, the dimethyl-vinyl phosphate, the initiator and the high-boiling-point solvent is 1:2:3:1:0.06: 30.

The introducing agent is azobisisobutyronitrile; the inert gas is neon; the high boiling point solvent is N, N-dimethylacetamide.

The preparation method of the nano synthetic lubricating oil is characterized by comprising the following steps: the components are evenly stirred according to the weight portion, and then are placed in a KH-700 type ultrasonic oscillator to be oscillated for 13 minutes under the power of 600W, so that the nano synthetic lubricating oil is obtained.

Example 4

The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂7.5 parts of organic nano material, 2.5 parts of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer 14 parts, 73 parts of base oil, 0.7 part of antioxidant, 0.9 part of dispersant and 0.45 part of antiwear agent.

The antiwear agent is zinc dialkyl thiosulfate; the dispersing agent is formed by mixing triethyl hexyl phosphoric acid, vinyl distearamide, stearic acid monoglyceride, polyethylene glycol and mono-alkenyl succinimide according to the mass ratio of 1:2:2:1: 3; the antioxidant is prepared by mixing 2, 6-tertiary butyl-4-methylphenol, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether, tetra [ beta- (3, 5-tertiary butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, didodecanol ester and ditetradecanol ester according to the mass ratio of 1:3:2:1: 2.

The preparation method of the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high boiling point solvent, stirring and reacting for 4.5 hours at 73 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally performing rotary evaporation to remove water to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate, the methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, the polyethylene glycol monoallyl ether, the dimethyl-vinyl phosphate, the initiator and the high-boiling-point solvent is 1:2:3:1:0.065: 33.

The introducing agent is formed by mixing azodiisobutyronitrile and azodiisoheptonitrile according to the mass ratio of 3: 5; the inert gas is argon; the high boiling point solvent is formed by mixing dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone according to a mass ratio of 2:4:5: 3.

The preparation method of the nano synthetic lubricating oil is characterized by comprising the following steps: the components are evenly stirred according to the weight portion, and then are placed in a KH-700 type ultrasonic oscillator to be oscillated for 14 minutes under the power of 640W, so that the nano synthetic lubricating oil is obtained.

Example 5

The nano synthetic lubricating oil is characterized by comprising the following components in parts by weight: hydroxyl-terminated hyperbranched nano hybrid polymer HB-SiO₂8 parts of organic nano material, 3 parts of 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer, 15 parts of base oil, 0.8 part of antioxidant, 1 part of dispersing agent and 0.5 part of antiwear agent.

The antiwear agent is zinc dialkyl thiosulfate; the dispersant is mono alkenyl succinimide; the antioxidant is ditetradecyl alcohol ester.

The preparation method of the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer comprises the following steps: adding 3-hydroxy-1-adamantyl methacrylate, methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, polyethylene glycol monoallyl ether, dimethyl-vinyl phosphate and an initiator into a high boiling point solvent, stirring and reacting for 5 hours at 75 ℃ in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 7 times, and finally removing water by rotary evaporation to obtain the 3-hydroxy-1-adamantyl methacrylate/methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer.

The mass ratio of the 3-hydroxy-1-adamantyl methacrylate, the methacrylic acid (1H,1H, 7H-perfluoroheptyl) ester, the polyethylene glycol monoallyl ether, the dimethyl-vinyl phosphate, the initiator and the high-boiling-point solvent is 1:2:3:1:0.07: 35.

The introducing agent is azobisisobutyronitrile; the inert gas is nitrogen; the high boiling point solvent is N, N-dimethylacetamide.

The preparation method of the nano synthetic lubricating oil is characterized by comprising the following steps: the components are evenly stirred according to the weight portion, and then are placed in a KH-700 type ultrasonic oscillator to be oscillated for 15 minutes under the power of 650W, so as to obtain the nano synthetic lubricating oil.

Comparative example 1

This example provides a nano-synthetic lubricant, the formulation and preparation method of which are essentially the same as those of example 1, except that no hydroxyl-terminated hyperbranched nano-hybrid polymer HB-SiO is added₂。

Comparative example 2

This example provides a nano-synthetic lubricant having substantially the same formulation and preparation as in example 1, except that no organic nano-materials were added.

Comparative example 3

This example provides a nano-synthetic lubricant having substantially the same formulation and preparation as in example 1, except that the 3-hydroxy-1-adamantyl methacrylate/1H, 7H-perfluoroheptyl ester/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer was not added.

Comparative example 4

This example provides a nano-synthetic lubricant having substantially the same formulation and preparation as in example 1, except that 3-hydroxy-1-adamantyl methacrylate/1H, 7H-perfluoroheptyl methacrylate/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer was prepared without the addition of 3-hydroxy-1-adamantyl methacrylate.

Comparative example 5

This example provides a nano-synthetic lubricant having substantially the same formulation and preparation as in example 1, except that the 3-hydroxy-1-adamantyl methacrylate/1H, 7H-perfluoroheptyl methacrylate/polyethylene glycol monoallyl ether/dimethyl-vinyl phosphate copolymer was prepared without the addition of 1H, 7H-perfluoroheptyl methacrylate.

The samples obtained in examples 1 to 5 and comparative examples 1 to 5 were subjected to the relevant performance tests, the test results are shown in Table 1, the test methods are as follows,

(1) four-ball experiment: testing according to ASTM D-2783; in the test results of the four-ball experiment, the maximum non-seizure load PB value indicates the maximum load of the steel ball without seizure in a lubricating state at a certain temperature and a certain rotating speed, and the higher the PB value is, the better the lubricating performance of the lubricating oil is. The sintering load PD value indicates that the load is increased step by step, the upper steel ball and the lower steel ball are sintered at high temperature due to the overlarge load, the equipment has to stop running, and the higher the PD value is, the better the extreme pressure lubricating performance of the lubricating oil is. The value d of the wear scar diameter represents the size of the wear scar diameter of the bearing steel spherical surface caused by friction, and the smaller the value d is, the better the anti-wear capability and lubricity of the lubricating oil is.

(2) Kinematic viscosity: testing according to GB/T265;

(3) pour point: testing according to GB/T3535-2006;

as can be seen from Table 1, the nano-synthetic lubricating oil disclosed in the examples of the present invention has better extreme pressure performance, lubricating performance and service performance than the comparative examples, which is the result of the synergistic effect of the components.

TABLE 1 Properties of samples of examples and comparative examples

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.