Lubricating oil with good lubricating property and preparation method thereof

Abstract

The invention relates to the technical field of lubricating oil, and provides lubricating oil with good lubricating performance and a preparation method thereof. Lubricating oil with good lubricating performance comprises the following components in parts by weight: 10-30 parts of a solid lubricant, 0.2-5 parts of an emulsifier, 20-40 parts of base oil and 60-80 parts of a solvent, and the solid lubricant comprises crystalline flake graphite and chlorite in a mass ratio of 1: 9-9: 1. By means of the technical scheme, the problem that in the prior art, lubricating oil is poor in lubricating performance is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oils, and in particular to a lubricating oil with good lubrication performance and a preparation method thereof. Background Art

[0002] In the industrial production process, lubricating oil is often used between machines to reduce direct contact with each other. Lubricating oil is between two parts, which can form an oil film on the surface of the parts. By reducing the direct contact between the metals of the friction surfaces, the friction coefficient and friction resistance are reduced, the power consumption is reduced, and the wear of the contact surface is reduced, so as to achieve the purpose of saving energy, extending the life of the machine, and improving economic benefits. However, the lubricating performance of existing lubricating oils is not ideal. Therefore, how to improve the lubricating performance of lubricating oils is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0003] The invention provides a lubricating oil with good lubricating performance and a preparation method thereof, which solves the problem of poor lubricating performance of the lubricating oil in the related art.

[0004] The technical solution of the present invention is as follows: The invention provides a lubricating oil with good lubrication performance, comprising the following components in parts by weight: 10 to 30 parts of a solid lubricant, 0.2 to 5 parts of an emulsifier, 20 to 40 parts of a base oil, and 60 to 80 parts of a solvent, wherein the solid lubricant comprises flake graphite and chlorite in a mass ratio of 1:9 to 9:1.

[0005] As a further technical solution, the preparation method of the solid lubricant comprises the following steps: The flake graphite and chlorite are mixed evenly and then ground to obtain a solid lubricant.

[0006] As a further technical solution, the mass ratio of the flake graphite to chlorite is 1:4 to 4:1.

[0007] The present invention further improves the lubricating performance of the lubricating oil by limiting the mass ratio of flake graphite to chlorite to 1:4-4:1.

[0008] As a further technical solution, the particle size of the flake graphite is 40~50nm.

[0009] As a further technical solution, the particle size of the chlorite is 50 μm.

[0010] As a further technical solution, the emulsifier includes an anionic emulsifier and a nonionic emulsifier in a mass ratio of 1 to 3:1.

[0011] The invention further improves the lubricating performance of the lubricating oil by using the anionic emulsifier and the nonionic emulsifier in a mass ratio of 1 to 3:1.

[0012] As a further technical solution, the anionic emulsifier includes one or two of calcium stearoyl lactylate and sodium stearoyl lactylate, and the nonionic emulsifier includes one or more of glyceryl stearate, diethylene glycol monooleate, and polyoxyethylene alkylphenol ether.

[0013] As a further technical solution, the base oil includes one or more of silicone oil, polyalphaolefin, and diisooctyl sebacate.

[0014] As a further technical solution, the solvent includes one or more of acetone, n-butane, 2-methylpentane, fluorine solvent 80, and ethyl perfluorobutyl ether.

[0015] The invention provides a method for preparing a lubricating oil with good lubrication performance, comprising the following steps: uniformly mixing a solid lubricant, an emulsifier, a base oil and a solvent to obtain the lubricating oil with good lubrication performance.

[0016] The working principle and beneficial effects of the present invention are: In the present invention, flake graphite and chlorite, chemical substances with a layered structure, are selected for use in combination as solid lubricants. They not only have a layered structure that is easy to slide, but also have abundant positive charges. When the solid lubricant contacts the emulsifier, they can not only combine with each other through hydrogen bonds between hydrophilic groups, but also act through the attraction of positive and negative charges, so that the dispersibility of the solid lubricant is better, thereby reducing the friction coefficient and wear amount of the lubricating oil, and achieving the effect of increasing the lubricating performance of the lubricating oil. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the following examples and comparative examples, the parameters of the raw materials are as follows: The particle size of flake graphite is 40~50nm; The particle size of chlorite powder is 50 μm; The viscosity index of polyalphaolefin is 145 and the kinematic viscosity (40°C) is 51 mm 2 / s.

[0019] Example 1 A lubricating oil and a preparation method thereof, comprising the following steps: 1 part of flake graphite, 9 parts of chlorite powder, 0.2 parts of calcium stearoyl lactylate, 10 parts of silicone oil, 10 parts of polyalphaolefin, 20 parts of n-butane, 20 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether were uniformly mixed to obtain lubricating oil.

[0020] Example 2 A lubricating oil and a preparation method thereof, comprising the following steps: 3 parts of flake graphite, 27 parts of chlorite powder, 5 parts of sodium stearoyl lactylate, 20 parts of silicone oil, 20 parts of polyalphaolefin, 30 parts of n-butane, 30 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether were mixed uniformly to obtain lubricating oil.

[0021] Example 3 A lubricating oil and a preparation method thereof, comprising the following steps: S1. Mix 1 part of flake graphite and 9 parts of chlorite powder evenly, and grind them in a ball mill at a speed of 400 r / min for 20 minutes to obtain a solid lubricant.

[0022] S2. Evenly mix 10 parts of solid lubricant, 0.2 parts of calcium stearoyl lactylate, 10 parts of silicone oil, 10 parts of poly-alpha-olefin, 20 parts of n-butane, 20 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether to obtain lubricating oil.

[0023] Example 4 A lubricating oil and a preparation method thereof, comprising the following steps: S1. Mix 1 part of flake graphite and 9 parts of chlorite powder evenly, and grind them in a ball mill at a speed of 400 r / min to obtain a solid lubricant.

[0024] S2. Evenly mix 10 parts of solid lubricant, 0.1 parts of calcium stearoyl lactylate, 0.1 parts of glyceryl stearate, 10 parts of silicone oil, 10 parts of poly-alpha olefin, 20 parts of n-butane, 20 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether to obtain lubricating oil.

[0025] Example 5 The only difference between Example 5 and Example 3 is that calcium stearoyl lactylate is replaced by an equal amount of glyceryl stearate.

[0026] Example 6 The only difference between Example 6 and Example 4 is that: 0.15 parts of calcium stearoyl lactylate and 0.05 parts of glyceryl stearate.

[0027] Example 7 The difference between Example 7 and Example 4 is only that: 9 parts of flake graphite and 1 part of chlorite powder.

[0028] Example 8 The only difference between Example 8 and Example 4 is: 1 part of flake graphite and 4 parts of chlorite powder.

[0029] Example 9 The difference between Example 9 and Example 4 is only that: 4 parts of flake graphite and 1 part of chlorite powder.

[0030] Comparative Example 1 A lubricating oil and a preparation method thereof, comprising the following steps: 10 parts of flake graphite, 0.2 parts of calcium stearoyl lactylate, 10 parts of silicone oil, 10 parts of poly-alpha-olefin, 20 parts of n-butane, 20 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether were uniformly mixed to obtain lubricating oil.

[0031] Comparative Example 2 A lubricating oil and a preparation method thereof, comprising the following steps: 10 parts of chlorite powder, 0.2 parts of calcium stearoyl lactylate, 10 parts of silicone oil, 10 parts of poly-alpha olefin, 20 parts of n-butane, 20 parts of 2-methylpentane and 20 parts of ethyl perfluorobutyl ether were mixed uniformly to obtain lubricating oil.

[0032] Test example The lubricating oils prepared in Examples 1 to 9 and Comparative Examples 1 to 2 were brushed onto the surface of the foamed polyurethane to form a lubricating layer. The performance of the lubricating oils was tested according to GB / T 3960-2016. The results are shown in Table 1.

[0033] Table 1 Performance test results of lubricating oils of Examples 1 to 9 and Comparative Examples 1 to 2

[0034] Compared with Comparative Example 1 and Comparative Example 2, the solid lubricant in the lubricating oil prepared in Example 1 is a combination of flake graphite and chlorite powder. As a result, the friction coefficient and wear amount of Example 1 are smaller than those of Comparative Example 1 and Comparative Example 2, indicating that the compound use of flake graphite and chlorite in the lubricating oil synergistically reduces the friction coefficient and wear amount of the lubricating oil and improves the lubricating performance of the lubricating oil.

[0035] The friction coefficient and wear amount of the lubricating oil prepared in Example 3 are less than those in Example 1, indicating that the solid lubricant obtained by mixing and grinding the flake graphite and chlorite powder evenly further reduces the friction coefficient and wear amount of the lubricating oil, and further improves the lubricating performance of the lubricating oil.

[0036] In the lubricating oil prepared in Example 4, both anionic emulsifier and nonionic emulsifier were used as emulsifiers. As a result, the friction coefficient and wear amount of Example 4 were smaller than those of Example 3 and Example 5, indicating that the combined use of anionic emulsifier and nonionic emulsifier can reduce the friction coefficient and wear amount of the lubricating oil, and further improve the lubricating performance of the lubricating oil.

[0037] The friction coefficient and wear amount of the lubricating oil prepared in Example 8 and Example 9 are less than those in Example 4 and Example 7, indicating that by limiting the mass ratio of flake graphite and chlorite in the lubricating oil to 1:4~4:1, the friction coefficient and wear amount of the lubricating oil can be further reduced, and the lubricating performance of the lubricating oil can be further improved.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lubricating oil with good lubrication performance, characterized in that: The invention comprises the following components in parts by weight: 10 to 30 parts of a solid lubricant, 0.2 to 5 parts of an emulsifier, 20 to 40 parts of a base oil, and 60 to 80 parts of a solvent. The solid lubricant comprises flake graphite and chlorite in a mass ratio of 1:9 to 9:

1.

2. A lubricating oil with good lubrication performance according to claim 1, characterized in that: The preparation method of the solid lubricant comprises the following steps: The flake graphite and chlorite are mixed evenly and then ground to obtain a solid lubricant.

3. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The mass ratio of the flake graphite to chlorite is 1:4 to 4:

1.

4. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The particle size of the flake graphite is 40-50 nm.

5. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The particle size of the chlorite is 50 μm.

6. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The emulsifier includes an anionic emulsifier and a nonionic emulsifier in a mass ratio of 1 to 3:

1.

7. A lubricating oil with good lubrication performance according to claim 6, characterized in that: The anionic emulsifier includes one or two of calcium stearoyl lactylate and sodium stearoyl lactylate, and the nonionic emulsifier includes one or more of glyceryl stearate, diethylene glycol monooleate, and polyoxyethylene alkylphenol ether.

8. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The base oil includes one or more of silicone oil, polyalphaolefin, and diisooctyl sebacate.

9. The lubricating oil with good lubrication performance according to claim 1, characterized in that: The solvent includes one or more of acetone, n-butane, 2-methylpentane, fluorine solvent 80, and ethyl perfluorobutyl ether.

10. The method for preparing a lubricating oil with good lubrication performance according to any one of claims 1 to 9, characterized in that: The following steps are involved: The solid lubricant, emulsifier, base oil and solvent are uniformly mixed to obtain a lubricating oil with good lubrication performance.

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