High-stability lubricating oil and preparation process thereof

Abstract

The invention discloses high-stability lubricating oil and a preparation process thereof. The preparation process of the lubricating oil comprises the following steps: S1, respectively weighing 85%-95% of base oil, 1%-10% of an anti-wear agent, 1%-5% of a complexing agent and 1%-3% of an antioxidant according to corresponding component proportions by using a weighing tool; according to the lubricating oil, the anti-wear agent formed by mixing the fluorinated graphene nanosheets, the molybdenum naphthenate and the molybdenum alkyl salicylate is arranged, the fluorinated graphene nanosheets have the good anti-wear and anti-friction effects in the lubricating oil, meanwhile, the fluorinated graphene nanosheets have the high heat conductivity coefficient, heat generated in the friction process can be removed in time, and the lubricating oil can be prevented from being damaged. Organic molybdenum composed of molybdenum naphthenate and molybdenum alkyl salicylate can reduce corrosion of corrosive substances such as sulfur to metal materials, and the organic molybdenum and a friction surface are subjected to running-in again under local high-temperature and high-pressure conditions to form a relatively flat friction surface for reducing abrasion, so that the abrasion-resistant and heat-conducting properties of the lubricating oil are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oils, in particular to a highly stable lubricating oil and a preparation process thereof. Background Art

[0002] Lubricating oil is a general term for lubricants in various aspects of automobiles and mechanical equipment. It mainly plays the role of lubrication, rust prevention, sealing and buffering. Lubricating oil can reduce friction between metal parts and extend the service life of mechanical equipment. It also has functions such as cooling and cleaning, and is widely used in automobiles and industrial machinery. However, during use, most existing lubricating oils have poor thermal conductivity, making it difficult to effectively transfer the heat generated by mechanical friction, and have poor anti-wear and friction reduction effects. Under high temperature and high pressure environments, they are prone to large wear, which makes the lubricating oil itself unstable. For this reason, we propose a highly stable lubricating oil and its preparation process. Summary of the Invention

[0003] In view of the deficiencies raised in the above background technology, the present invention provides a highly stable lubricating oil and a preparation process thereof, which solves the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a highly stable lubricating oil and a preparation process thereof, wherein the preparation process of the lubricating oil comprises the following steps: S1. Use a weighing device to weigh the raw material base oil (85%-95%), anti-wear agent (1%-10%), compounding agent (1%-5%) and antioxidant (1%-3%) of the corresponding component ratios, and the total ratio of each component is 100%; S2. Pour the base oil weighed in step S1 into a reactor, heat and stir it, and slowly add the anti-wear agent while stirring to ensure that the base oil and the anti-wear agent are fully mixed; S3. After the base oil and anti-wear agent are mixed in step S2, the compounding agent and antioxidant are added to the interior of the reactor in sequence, and the interior of the reactor is vacuumed and heated and stirred; S4. After the raw materials in step S3 are stirred and mixed, they are kept warm for a period of time, and then the materials in the reactor are cooled until they reach room temperature, thereby obtaining a lubricating oil with high stability.

[0005] Preferably, the proportions of the components in the lubricating oil raw material are as follows, in percentage by mass: base oil 90%, antiwear agent 5%, complexing agent 3% and antioxidant 2%, and the total proportion of the components is 100%.

[0006] Preferably, the base oil needs to be filtered before weighing to remove impurities remaining in the base oil.

[0007] Preferably, the anti-wear agent is prepared by mixing fluorinated graphene nanosheets, molybdenum naphthenate and molybdenum alkyl salicylate.

[0008] Preferably, the preparation method of the antiwear agent comprises the following steps: (1) Utilizing carbon and fluorine to directly react under high temperature conditions to generate fluorinated graphite, dissolving the fluorinated graphite, and then obtaining fluorinated graphene nanosheets by centrifugal separation and vacuum drying; (2) Using a weighing device, weigh appropriate amounts of fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate for use; (3) Fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate are fully mixed in a ratio of 4:3:3 to obtain an anti-wear agent.

[0009] Preferably, the reaction temperature of the fluorinated graphite is 450°C to 600°C, and the vacuum drying temperature is 60°C.

[0010] Preferably, the thickness of the fluorinated graphene nanosheets is 1-10 nm, and the apparent density is 0.03 g / cm3.

[0011] Preferably, the composite agent is prepared by mixing barium petroleum sulfonate and polyisobutylene, and the mass ratio of the barium petroleum sulfonate to polyisobutylene is 4:6.

[0012] Preferably, the antioxidant is di-tert-butyl-p-cresol.

[0013] Preferably, in step S2, the temperature of the reactor is in the range of 60°C to 80°C, and in step S3, the temperature of the reactor is in the range of 110°C to 120°C.

[0014] Compared with the prior art, the present invention provides a highly stable lubricating oil and a preparation process thereof, which has the following beneficial effects: The high-stability lubricating oil and its preparation process are characterized by providing an anti-wear agent composed of a mixture of fluorinated graphene nanosheets, molybdenum naphthenate, and molybdenum alkyl salicylate. The fluorinated graphene nanosheets can be used in the lubricating oil to not only have good anti-wear and friction-reducing effects, but also have a high thermal conductivity coefficient, which can promptly remove heat generated during the friction process. Furthermore, the organic molybdenum composed of molybdenum naphthenate and molybdenum alkyl salicylate can reduce the corrosion of corrosive substances such as sulfur on metal materials. Under local high temperature and high pressure conditions, the organic molybdenum is again ground into the friction surface to form a relatively smooth friction surface, thereby reducing wear and improving the anti-wear and thermal conductivity properties of the lubricating oil. The high-stability lubricating oil and its preparation process, by providing a composite agent composed of a mixture of petroleum barium sulfonate and polyisobutylene, can effectively improve the adhesion and aging resistance of the lubricating oil during its use, while also enhancing the flexibility, air tightness and electrical insulation of the lubricating oil. DETAILED DESCRIPTION

[0015] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Example

[0016] A highly stable lubricating oil and a preparation process thereof, the preparation process of the lubricating oil comprising the following steps: S1. Use a weighing device to weigh the raw materials of the corresponding component ratios, and the ratio of each component in every 100g of lubricating oil raw materials is as follows: base oil 90%, antiwear agent (the antiwear agent is prepared by mixing fluorinated graphene nanosheets, molybdenum cyclohexane and molybdenum alkyl salicylate) 7%, composite agent (the composite agent is prepared by mixing barium petroleum sulfonate and polyisobutylene in a mass ratio of 4:6) 1% and antioxidant (the antioxidant is di-tert-butyl-p-cresol) 2%, the total ratio of each component is 100%, wherein the base oil needs to be filtered before weighing to remove impurities remaining in the base oil; The preparation method of the antiwear agent comprises the following steps: (1) Carbon and fluorine are reacted at a high temperature of 450°C to 600°C to generate fluorinated graphite, which is then dissolved and centrifuged and vacuum dried (at 60°C) to obtain fluorinated graphene nanosheets with a thickness of 1-10 nm and an apparent density of 0.03 g / cm3. (2) Using a weighing device, weigh appropriate amounts of fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate for use; (3) Fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate are fully mixed in a ratio of 4:3:3 to obtain an anti-wear agent.

[0017] S2. Pour the base oil weighed in step S1 into a reactor, heat and stir it, and slowly add the anti-wear agent while stirring to ensure that the base oil and the anti-wear agent are fully mixed. At this time, the temperature of the reactor is in the range of 60°C to 80°C. S3. After the base oil and anti-wear agent are mixed in step S2, the compounding agent and antioxidant are added to the interior of the reactor in sequence, and the interior of the reactor is vacuumed and heated and stirred. At this time, the temperature of the reactor is in the range of 110° C. to 120° C.; S4. After the raw materials in step S3 are stirred and mixed, they are kept warm for a period of time, and then the materials in the reactor are cooled until they reach room temperature, thereby obtaining a lubricating oil with high stability. Example

[0018] A highly stable lubricating oil and a preparation process thereof, the preparation process of the lubricating oil comprising the following steps: S1. Weigh the raw materials of the corresponding component ratios using a weighing device, and the ratio of each component in every 100g of lubricating oil raw material is as follows: base oil 90%, antiwear agent (the antiwear agent is prepared by mixing fluorinated graphene nanosheets, molybdenum naphthenate and molybdenum alkyl salicylate) 5%, composite agent (the composite agent is prepared by mixing barium petroleum sulfonate and polyisobutylene in a mass ratio of 4:6) 3% and antioxidant (the antioxidant is di-tert-butyl-p-cresol) 2%, the total ratio of each component is 100%, wherein the base oil needs to be filtered before weighing to remove impurities remaining in the base oil; The preparation method of the antiwear agent comprises the following steps: (1) Carbon and fluorine are reacted at a high temperature of 450°C to 600°C to generate fluorinated graphite, which is then dissolved and centrifuged and vacuum dried (at 60°C) to obtain fluorinated graphene nanosheets with a thickness of 1-10 nm and an apparent density of 0.03 g / cm3. (2) Using a weighing device, weigh appropriate amounts of fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate for use; (3) Fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate are fully mixed in a ratio of 4:3:3 to obtain an anti-wear agent.

[0019] S2. Pour the base oil weighed in step S1 into a reactor, heat and stir it, and slowly add the anti-wear agent while stirring to ensure that the base oil and the anti-wear agent are fully mixed. At this time, the temperature of the reactor is in the range of 60°C to 80°C. S3. After the base oil and anti-wear agent are mixed in step S2, the compounding agent and antioxidant are added to the interior of the reactor in sequence, and the interior of the reactor is vacuumed and heated and stirred. At this time, the temperature of the reactor is in the range of 110° C. to 120° C.; S4. After the raw materials in step S3 are stirred and mixed, they are kept warm for a period of time, and then the materials in the reactor are cooled until they reach room temperature, thereby obtaining a lubricating oil with high stability. Example

[0020] A highly stable lubricating oil and a preparation process thereof, the preparation process of the lubricating oil comprising the following steps: S1. Weigh the raw materials of the corresponding component ratios using a weighing device, and the ratio of each component in every 100g of lubricating oil raw material is as follows: base oil 90%, antiwear agent (the antiwear agent is prepared by mixing fluorinated graphene nanosheets, molybdenum naphthenate and alkyl salicylate molybdenum) 3%, composite agent (the composite agent is prepared by mixing barium petroleum sulfonate and polyisobutylene in a mass ratio of 4:6) 5% and antioxidant (the antioxidant is di-tert-butyl-p-cresol) 2%, the total ratio of each component is 100%, wherein the base oil needs to be filtered before weighing to remove impurities remaining in the base oil; The preparation method of the antiwear agent comprises the following steps: (1) Carbon and fluorine are reacted at a high temperature of 450°C to 600°C to generate fluorinated graphite, which is then dissolved and centrifuged and vacuum dried (at 60°C) to obtain fluorinated graphene nanosheets with a thickness of 1-10 nm and an apparent density of 0.03 g / cm3. (2) Using a weighing device, weigh appropriate amounts of fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate for use; (3) Fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate are fully mixed in a ratio of 4:3:3 to obtain an anti-wear agent.

[0021] S2. Pour the base oil weighed in step S1 into a reactor, heat and stir it, and slowly add the anti-wear agent while stirring to ensure that the base oil and the anti-wear agent are fully mixed. At this time, the temperature of the reactor is in the range of 60°C to 80°C. S3. After the base oil and anti-wear agent are mixed in step S2, the compounding agent and antioxidant are added to the interior of the reactor in sequence, and the interior of the reactor is vacuumed and heated and stirred. At this time, the temperature of the reactor is in the range of 110° C. to 120° C.; S4. After the raw materials in step S3 are stirred and mixed, they are kept warm for a period of time, and then the materials in the reactor are cooled until they reach room temperature, thereby obtaining a lubricating oil with high stability.

[0022] By comparing the lubricating oils prepared by the methods of Example 1, Example 2, and Example 3, it can be seen that the lubricating oil prepared by the method of Example 2 has the best performance, and the comparison results of the lubricating oils prepared by Example 1, Example 2, and Example 3 are as follows: Anti-wear and thermal conductivity Bonding aging resistance Example 1 good Difference Example 2 good good Example 3 Difference good In the above scheme, it should be noted that the ratio of each component in every 100g of lubricating oil raw material is as follows: base oil 90%, anti-wear agent 5%, compounding agent 3% and antioxidant 2%. The total ratio of each component is 100%. The prepared lubricating oil has the best anti-wear, thermal conductivity, adhesion and aging resistance.

[0023] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly stable lubricating oil and a preparation process thereof, characterized in that: The preparation process of the lubricating oil comprises the following steps: S1. Use a weighing device to weigh the raw material base oil (85%-95%), anti-wear agent (1%-10%), compounding agent (1%-5%) and antioxidant (1%-3%) of the corresponding component ratios, and the total ratio of each component is 100%; S2. Pour the base oil weighed in step S1 into a reactor, heat and stir it, and slowly add the anti-wear agent while stirring to ensure that the base oil and the anti-wear agent are fully mixed; S3. After the base oil and anti-wear agent are mixed in step S2, the compounding agent and antioxidant are added to the interior of the reactor in sequence, and the interior of the reactor is vacuumed and heated and stirred; S4. After the raw materials in step S3 are stirred and mixed, they are kept warm for a period of time, and then the materials in the reactor are cooled until they reach room temperature, thereby obtaining a lubricating oil with high stability.

2. A high-stability lubricating oil and its preparation process according to claim 1, characterized in that: The proportions of the components in the lubricating oil raw material are as follows, in percentage by mass: base oil 90%, anti-wear agent 5%, complexing agent 3% and antioxidant 2%, and the total proportion of the components is 100%.

3. A high-stability lubricating oil and its preparation process according to claim 1, characterized in that: The base oil needs to be filtered before weighing to remove impurities remaining in the base oil.

4. A high-stability lubricating oil and its preparation process according to claim 1, characterized in that: The anti-wear agent is prepared by mixing fluorinated graphene nanosheets, molybdenum naphthenate and molybdenum alkyl salicylate.

5. A high-stability lubricating oil and its preparation process according to claim 4, characterized in that: The preparation method of the antiwear agent comprises the following steps: (1) Utilizing carbon and fluorine to directly react under high temperature conditions to generate fluorinated graphite, dissolving the fluorinated graphite, and then obtaining fluorinated graphene nanosheets by centrifugal separation and vacuum drying; (2) Using a weighing device, weigh appropriate amounts of fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate for use; (3) Fluorinated graphene nanosheets, molybdenum cyclohexaneate, and molybdenum alkyl salicylate are fully mixed in a ratio of 4:3:3 to obtain an anti-wear agent.

6. A high-stability lubricating oil and its preparation process according to claim 5, characterized in that: The reaction temperature of the fluorinated graphite is 450°C to 600°C, and the vacuum drying temperature is 60°C.

7. A high-stability lubricating oil and its preparation process according to claim 5, characterized in that: The thickness of the fluorinated graphene nanosheet is 1-10 nm, and the apparent density is 0.03 g / cm3.

8. The high-stability lubricating oil and its preparation process according to claim 1, characterized in that: The composite agent is prepared by mixing barium petroleum sulfonate and polyisobutylene, and the mass ratio of the barium petroleum sulfonate to the polyisobutylene is 4:

6.

9. The high-stability lubricating oil and its preparation process according to claim 1, characterized in that: The antioxidant is di-tert-butyl-p-cresol.

10. The high-stability lubricating oil and its preparation process according to claim 1, characterized in that: In step S2, the temperature of the reactor is in the range of 60°C to 80°C. In step S3, the temperature of the reactor is in the range of 110°C to 120°C.