CN116004313A - Low-viscosity diesel engine lubricating oil and preparation method thereof - Google Patents
Low-viscosity diesel engine lubricating oil and preparation method thereof Download PDFInfo
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- CN116004313A CN116004313A CN202310067699.2A CN202310067699A CN116004313A CN 116004313 A CN116004313 A CN 116004313A CN 202310067699 A CN202310067699 A CN 202310067699A CN 116004313 A CN116004313 A CN 116004313A
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Abstract
The invention discloses low-viscosity diesel engine lubricating oil and a preparation method thereof, wherein the lubricating oil comprises the following components in parts by weight: 40-70 parts of lubricating oil base oil, 20-30 parts of diesel engine oil complexing agent, 5.5-9.5 parts of viscosity index improver, 1-3 parts of antioxidant corrosion inhibitor, 1-2 parts of anti-foaming agent, 0.3-2 parts of pour point depressant and 0.1-1 part of petroleum detergent. According to the low-viscosity diesel engine lubricating oil and the preparation method thereof, the obtained lubricating oil has the advantages of low viscosity, oxidation resistance, corrosion resistance, wear resistance, foam resistance and the like, the service life is long, the raw material proportion of the lubricating oil is simple and reasonable, the cost is low, the process is simple and efficient, the fuel economy applicability requirement is met, and the lubricating oil is suitable for popularization and use in the field of diesel engines.
Description
Technical Field
The invention belongs to the technical field of diesel engine lubricating oil, and particularly relates to low-viscosity diesel engine lubricating oil and a preparation method thereof.
Background
Along with the enhancement of environmental awareness and the promotion of environmental protection and energy conservation regulations, the technology of the diesel engine is continuously innovated, and the lubricating oil used by the diesel engine is continuously updated and upgraded, so that the development of the lubricating oil technology not only can meet the normal operation of the diesel engine, but also has the effects of reducing the cost, reducing the maintenance cost, improving the fuel economy, prolonging the service life of the oil product and the like. Chinese patent, publication No. CN111100734a, discloses a diesel engine oil with long rust resistance and oil change period and a preparation process thereof, and the rust resistance of the oil product is improved by adding a rust inhibitor.
The invention provides low-viscosity diesel engine lubricating oil, which has the advantages of low viscosity, wear resistance and the like, meets the requirement of fuel economy applicability, and is suitable for popularization and application in the field of diesel engines.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provide low-viscosity diesel engine lubricating oil and a preparation method thereof.
In order to achieve the above purpose and achieve the above technical effects, the invention adopts the following technical scheme:
the low-viscosity diesel engine lubricating oil comprises the following components in parts by weight:
40-70 parts of lubricating oil base oil
20-30 parts of diesel engine oil complexing agent
5.5 to 9.5 parts of viscosity index improver
1-3 parts of antioxidant and corrosion inhibitor
1-2 parts of anti-foaming agent
Pour point depressant 0.3-2 parts
1-3 parts of antiwear agent
Petroleum detergent 0.1-1 weight portions.
In the low viscosity diesel engine lubricating oil provided by the invention, the lubricating base oil is prepared by mixing C 2 ～C 10 Single normal alcohols and C 8 -C 12 The olefin is prepared by hydrogenation reaction.
In the low-viscosity diesel engine lubricating oil provided by the invention, the C 2 ～C 10 Single normal alcohols and C 8 -C 12 The mass ratio of the olefin is 1-2:8-9.
In the low-viscosity diesel engine lubricating oil provided by the invention, the C 2 ～C 10 The single normal alcohol of (2) provides an oxygen content of 1-3%.
In the low-viscosity diesel engine lubricating oil provided by the invention, the hydrogenation reaction temperature is 200-400 ℃.
In the low-viscosity diesel engine lubricating oil provided by the invention, the diesel engine oil complexing agent is CK-4 engine oil complexing agent.
In the low-viscosity diesel engine lubricating oil provided by the invention, the viscosity index improver is one or a combination of two of styrene diene copolymer and polymethacrylate.
In the low-viscosity diesel engine lubricating oil provided by the invention, the antioxidant corrosion inhibitor is zinc dialkyl dithiophosphate antioxidant corrosion inhibitor.
In the low-viscosity diesel engine lubricating oil provided by the invention, the pour point depressant is a fumarate pour point depressant.
The invention also provides a preparation method of the low-viscosity diesel engine lubricating oil, which comprises the following steps:
according to the weight portions, 1 to 3 portions of antioxidant and corrosion inhibitor and 0.1 to 1 portion of petroleum detergent are preheated and uniformly mixed at the temperature of 45 to 65 ℃, 40 to 70 portions of lubricating oil base oil, 20 to 30 portions of diesel engine oil complexing agent, 5.5 to 9.5 portions of viscosity index improver, 1 to 2 portions of anti-foaming agent, 0.3 to 2 portions of pour point depressant and 1 to 3 portions of antiwear agent are added, the temperature is kept unchanged, and the required low-viscosity diesel engine lubricating oil can be obtained after uniform mixing.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses low-viscosity diesel engine lubricating oil and a preparation method thereof, wherein the lubricating oil comprises the following components in parts by weight: 40-70 parts of lubricating oil base oil, 20-30 parts of diesel engine oil complexing agent, 5.5-9.5 parts of viscosity index improver, 1-3 parts of antioxidant corrosion inhibitor, 1-2 parts of anti-foaming agent, 0.3-2 parts of pour point depressant, 1-3 parts of antiwear agent and 0.1-1 part of petroleum detergent. The diesel engine lubricating oil provided by the invention has the advantages of low viscosity, oxidation resistance, corrosion resistance, wear resistance, foam resistance and the like, has long service life, is simple and reasonable in raw material proportion, has low cost, is simple and efficient in process, meets the requirements of fuel economy and applicability, and is suitable for popularization and use in the field of diesel engines.
Description of the embodiments
The present invention is described in detail below so that advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and unambiguous the scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
Examples
The low-viscosity diesel engine lubricating oil comprises the following components in parts by weight:
40 parts of lubricating base oil
CK-4 engine oil complexing agent 30 parts
9.5 parts of styrene diene copolymer viscosity index improver
3 parts of zinc dialkyl dithiophosphate antioxidant corrosion inhibitor
2 parts of polymethylsilicone oil anti-foaming agent
2 parts of fumaric acid ester pour point depressant
Antiwear agent 3 parts
1 part of petroleum detergent.
Lubricating base oils by blending C 2 ～C 10 Single normal alcohols and C 8 -C 12 The mass ratio of the olefin is 1:9, carrying out hydrogenation reaction at 200 ℃, wherein the oxygen content provided by a single normal alcohol is 2%.
The preparation method of the low-viscosity diesel engine lubricating oil is characterized by comprising the following steps of:
according to the weight parts, 3 parts of zinc dialkyl dithiophosphate antioxidant and 1 part of petroleum detergent are preheated and uniformly mixed at 60 ℃, 40 parts of lubricating oil base oil, 30 parts of CK-4 engine oil complexing agent, 9.5 parts of styrene diene copolymer viscosity index improver, 2 parts of polymethylsilicone oil anti-foaming agent, 2 parts of fumarate pour point depressant and 3 parts of antiwear agent are added, the temperature is kept unchanged, and the required low-viscosity diesel engine lubricating oil can be obtained after uniform mixing.
Examples
The low-viscosity diesel engine lubricating oil comprises the following components in parts by weight:
60 parts of lubricating base oil
CK-4 engine oil complexing agent 20 parts
6 parts of styrene diene copolymer viscosity index improver
2 parts of zinc dialkyl dithiophosphate antioxidant corrosion inhibitor
1 part of polymethylsilicone oil anti-foaming agent
Fumaric acid ester pour point depressant 1 part
Antiwear agent 2 parts
Petroleum detergent 0.5 parts.
Lubricating base oils by blending C 2 ～C 10 Single normal alcohols and C 8 -C 12 The mass ratio of the olefin is 2:8, carrying out hydrogenation reaction at 200 ℃, wherein the oxygen content provided by a single normal alcohol is 2%.
The preparation method of the low-viscosity diesel engine lubricating oil is characterized by comprising the following steps of:
according to the weight portions, 2 portions of zinc dialkyl dithiophosphate antioxidant and 0.5 portion of petroleum detergent are preheated and uniformly mixed at 60 ℃, 60 portions of lubricating oil base oil, 20 portions of CK-4 engine oil complexing agent, 6 portions of styrene diene copolymer viscosity index improver, 1 portion of polymethylsilicone oil anti-foaming agent, 1 portion of fumarate pour point depressant and 2 portions of antiwear agent are added, the temperature is kept unchanged, and the required low-viscosity diesel engine lubricating oil can be obtained after uniform mixing.
Example 1 was followed.
Examples
The low-viscosity diesel engine lubricating oil comprises the following components in parts by weight:
70 parts of lubricating base oil
CK-4 engine oil complexing agent 25 parts
Styrene diene copolymer viscosity index improver 5.5 parts
1 part of zinc dialkyl dithiophosphate antioxidant corrosion inhibitor
1 part of polymethylsilicone oil anti-foaming agent
Fumaric acid ester pour point depressant 0.3 parts
Antiwear agent 1 part
Petroleum detergent 0.1 parts.
Lubricating base oils by blending C 2 ～C 10 Single normal alcohols and C 8 -C 12 The mass ratio of the olefin is 1:9, carrying out hydrogenation reaction at 200 ℃, wherein the oxygen content provided by a single normal alcohol is 2%.
The preparation method of the low-viscosity diesel engine lubricating oil is characterized by comprising the following steps of:
according to the weight portions, 1 portion of zinc dialkyl dithiophosphate antioxidant and 0.1 portion of petroleum detergent are preheated and uniformly mixed at 60 ℃, then 70 portions of lubricating oil base oil, 25 portions of CK-4 engine oil complexing agent, 5.5 portions of styrene diene copolymer viscosity index improver, 1 portion of polymethylsilicone oil anti-foaming agent, 0.3 portion of fumarate pour point depressant and 1 portion of antiwear agent are added, the temperature is kept unchanged, and the required low-viscosity diesel engine lubricating oil can be obtained after uniform mixing.
Example 1 was followed.
Comparative example 1
Diesel engine lubricating oils are commercially available.
As a result of conducting abrasion resistance and viscosity tests according to SH/T003 test methods in examples 1 to 3 and comparative example 1, it was found that the abrasive diameters of examples 1 to 3 were 0.33 to 0.36mm, the abrasive diameters of comparative example 1 were 0.42mm, and the high-temperature high-shear viscosities of examples 1 to 3 were 3.47, 3.50 and 3.52 (150 ℃ C., 10 ℃ C., respectively) 6 s -1 ) High in comparative example 1/mPa.SHigh shear viscosity of 4.12 (150deg.C, 10) 6 s -1 ) It is apparent that the lubricating oils of examples 1 to 3 have low high-temperature high-shear viscosity and high antiwear properties, and are excellent in energy saving property.
Parts or structures of the present invention, which are not specifically described, may be existing technologies or existing products, and are not described herein.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (10)
1. The low-viscosity diesel engine lubricating oil is characterized by comprising the following components in parts by weight:
40-70 parts of lubricating oil base oil
20-30 parts of diesel engine oil complexing agent
5.5 to 9.5 parts of viscosity index improver
1-3 parts of antioxidant and corrosion inhibitor
1-2 parts of anti-foaming agent
Pour point depressant 0.3-2 parts
1-3 parts of antiwear agent
Petroleum detergent 0.1-1 weight portions.
2. The low viscosity diesel engine lubricant according to claim 1, wherein said lubricant base oil is prepared by blending C 2 ～C 10 Single normal alcohols and C 8 -C 12 The olefin is prepared by hydrogenation reaction.
3. The low viscosity diesel engine lubricant according to claim 2, wherein said C 2 ～C 10 Single normal alcohols and C 8 -C 12 The mass ratio of the olefin is 1-2:8-9.
4. A low viscosity diesel fuel according to claim 2An engine lubricating oil, characterized in that the C 2 ～C 10 The single normal alcohol of (2) provides an oxygen content of 1-3%.
5. A low viscosity diesel engine lubricant according to claim 2, wherein the hydrogenation reaction temperature is 200-400 ℃.
6. The low viscosity diesel engine oil of claim 1, wherein said diesel engine oil complexing agent is CK-4 engine oil complexing agent.
7. The low viscosity diesel engine oil of claim 1, wherein the viscosity index improver is one or a combination of two of styrene diene copolymer and polymethacrylate.
8. The low viscosity diesel engine lubricant according to claim 1, wherein the antioxidant corrosion inhibitor is a zinc dialkyldithiophosphate antioxidant corrosion inhibitor.
9. The low viscosity diesel engine oil of claim 1, wherein the pour point depressant is a fumarate pour point depressant.
10. A method for preparing a low viscosity diesel engine lubricant according to any of claims 1-9, comprising the steps of:
according to the weight portions, 1 to 3 portions of antioxidant and corrosion inhibitor and 0.1 to 1 portion of petroleum detergent are preheated and uniformly mixed at the temperature of 45 to 65 ℃, 40 to 70 portions of lubricating oil base oil, 20 to 30 portions of diesel engine oil complexing agent, 5.5 to 9.5 portions of viscosity index improver, 1 to 2 portions of anti-foaming agent, 0.3 to 2 portions of pour point depressant and 1 to 3 portions of antiwear agent are added, the temperature is kept unchanged, and the required low-viscosity diesel engine lubricating oil can be obtained after uniform mixing.
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| CN202310067699.2A CN116004313A (en) | 2023-02-06 | 2023-02-06 | Low-viscosity diesel engine lubricating oil and preparation method thereof |
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| CN202310067699.2A CN116004313A (en) | 2023-02-06 | 2023-02-06 | Low-viscosity diesel engine lubricating oil and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590076A (en) * | 2023-05-17 | 2023-08-15 | 东风嘉实多油品有限公司 | Lubricating oil composition for light-load diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590076A (en) * | 2023-05-17 | 2023-08-15 | 东风嘉实多油品有限公司 | Lubricating oil composition for light-load diesel engine |
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