A kind of washing type bearing oil additive, the composition containing it and the preparation method, application of composition

Abstract

The application provides a kind of washing type bearing oil additive, the composition containing it and the preparation method, application of composition, belong to bearing oil technical field.The washing type bearing oil additive of the application includes the following components: dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, rust inhibitor;The dispersant is polyisobutylene anhydride and / or polyisobutylene succinimide;The emulsifier is tween 80 and / or sodium dodecyl benzene sulfonate.The bearing oil obtained by blending the additive with naphthenic base oil has excellent lubricity, water dispersibility, pollutant dispersibility, filterability, rust resistance and other properties.

Description

Technical Field

[0001] This invention belongs to the field of bearing oil technology, and relates to a washing-type bearing oil additive, a composition containing the additive, a method for preparing the composition, and its application. Background Technology

[0002] The spindle of a high-speed roll grinding machine is a core component, and its performance and stability directly determine the machine tool's machining accuracy and efficiency. During the operation of a roll grinding machine, the spindle not only needs to withstand the enormous centrifugal force generated by high-speed rotation but also needs to cope with various cutting forces and vibrations generated during workpiece machining. Therefore, selecting a suitable bearing oil is crucial for the lubrication of the roll grinding machine spindle. The bearing oil in high-speed roll grinding machines in the metallurgical industry is highly susceptible to contamination by grinding fluid. The cutting fluid contains a large amount of water, grinding particles, and oxidizing substances. During the grinding fluid spraying process, leakage easily occurs at the bearing seals, leading to contamination of the bearing oil tank. Due to the small size of the bearing oil tank, it is impossible to separate the water and particles in the grinding fluid by allowing it to settle. The contaminated bearing oil cannot form a stable oil film and its corrosion resistance deteriorates. Therefore, traditional bearing oil deteriorates rapidly when used in roll grinding machines, easily causing bearing wear and corrosion, thus affecting the normal operating efficiency of the grinding machine. Therefore, washable bearing oils with emulsification stability and particle dispersibility can ensure effective lubrication and corrosion resistance under conditions of grinding fluid contamination, thereby improving the operating efficiency of grinding machine main bearings.

[0003] Chinese invention patent publication number CN115491249A discloses an oil film bearing oil composition and its preparation method. The oil film bearing oil composition is obtained from raw materials comprising the following components by weight: 10-30 parts API Group I mineral oil; 60-85 parts API Group II mineral oil; 0.05-0.3 parts pour point depressant; 0.1-0.5 parts antioxidant; 0.01-0.1 parts rust inhibitor; 0.05-0.3 parts extreme pressure anti-wear agent; 0.005-0.05 parts demulsifier; and 0.01-0.03 parts antifoaming agent. A special mineral-based base oil is used, combined with the above-mentioned additives, and under certain mixing ratios, the adverse effects on water separation performance are minimal. The final oil film bearing oil composition exhibits rapid water separation performance, as well as good viscosity-temperature properties, antifoaming properties, rust prevention properties, and extreme pressure anti-wear properties.

[0004] Chinese Invention Patent Publication No. CN109097171A discloses an oil film bearing oil composition and its preparation method. The oil film bearing oil composition comprises: 94.7-98.76 parts of base oil, 0.01-1 parts of bactericide, 0.01-0.1 parts of demulsifier, 1-2 parts of extreme pressure anti-wear agent, 0.1-1 parts of viscosity modifier, 0.1-1 parts of antioxidant, 0.01-0.1 parts of rust inhibitor, and 0.01-0.1 parts of antifoaming agent; the base oil is selected from one or more of HVIⅠ base oil and HVIII base oil; the bactericide is selected from one or more of isothiazolinone and quaternary ammonium salt; the demulsifier is selected from one or more of amine-ethylene oxide condensate and ethylene glycol ester; and the extreme pressure anti-wear agent is selected from one or more of sulfur-containing extreme pressure anti-wear agent and phosphorus-containing extreme pressure anti-wear agent. This bearing oil not only has excellent antibacterial properties, but also excellent antioxidant, extreme pressure wear resistance, rust prevention and corrosion prevention properties, which well meet the usage requirements of oil film bearings.

[0005] Chinese invention patent CN103540388B discloses an FD bearing oil composition, its preparation method, and its application. The composition comprises, by weight, the following components: 6-8 parts of diaspore monohydrate, 3-5 parts of chlorite, 1-3 parts of thulium, 1-2 parts of vinyltris-(β-methoxy)ethoxysilane, 1-2 parts of lithium dodecyl stearate, and 80-87 parts of FD bearing oil. The prepared FD bearing oil composition can form a high-strength, wear-resistant metal-ceramic layer on the inner and outer ring working surfaces and rolling element surfaces of the bearing, ensuring smooth bearing movement, reducing the failure rate, extending the bearing's service life by more than five times, and saving on lubricant consumption, achieving a green and environmentally friendly effect.

[0006] Naphthenic base oils possess high solubility, excellent emulsion stability, and are not prone to stratification, and are also environmentally friendly and safe; however, their application in bearing oils is limited. Furthermore, while these bearing oils exhibit excellent viscosity-temperature properties, wear resistance, oxidation resistance, and rust prevention, they lack attention to emulsion stability and particle dispersibility. Therefore, the development of wash-type bearing oils using low-viscosity naphthenic base oils as the main raw material, and the improvement of their overall performance, remain unexplored research topics in this field. Summary of the Invention

[0007] To address the aforementioned problems in the existing technology, this invention provides a washing-type bearing oil additive, a composition containing the additive, a method for preparing the composition, and its application. This washing-type bearing oil additive uses polyisobutylene anhydride and / or polyisobutylene succinimide as dispersants and Tween and / or sodium dodecylbenzene sulfonate as emulsifiers. It disperses water or other contaminants entering the bearing oil, maintaining the bearing oil's viscosity-temperature stability and excellent corrosion resistance. This provides effective wear and corrosion resistance for the bearings of roll grinding machines, ensuring stable operation of the grinding equipment and significantly extending the bearing oil change cycle.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows:

[0009] This invention provides a washing-type bearing oil additive, comprising the following components: dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, and rust inhibitor; wherein the dispersant is polyisobutylene anhydride and / or polyisobutylene succinimide; and the emulsifier is Tween 80 and / or sodium dodecylbenzene sulfonate.

[0010] Further, the washing-type bearing oil additive comprises, by weight, the following components: 0.1-1 parts dispersant, 0.1-0.4 parts emulsifier, 0.2-0.4 parts anti-wear agent, 0.02-0.05 parts metal passivator, 0.1-0.3 parts antioxidant, and 0.05-0.1 parts rust inhibitor.

[0011] Preferably, the washing-type bearing oil additive comprises, by weight, the following components: 0.5-0.8 parts dispersant, 0.2-0.4 parts emulsifier, 0.3-0.4 parts anti-wear agent, 0.03-0.05 parts metal passivator, 0.2-0.3 parts antioxidant, and 0.05-0.08 parts rust inhibitor.

[0012] More preferably, the washing-type bearing oil additive comprises, by weight, the following components: 0.5 parts dispersant, 0.3 parts emulsifier, 0.3 parts anti-wear agent, 0.03 parts metal passivator, 0.3 parts antioxidant, and 0.05 parts rust inhibitor.

[0013] Furthermore, the polyisobutylene anhydride has the following general structural formula:

[0014]

[0015] Where n takes values ​​ranging from 20 to 40, and R1 is glutaric anhydride, maleic anhydride, or maleic anhydride.

[0016] Preferably, the polyisobutylene succinic anhydride dispersant is selected from one or more of the following: AT-T2007A from Jinzhou Kangtai Lubricating Oil Additives Co., Ltd., PIBSA from Jinzhou Jialiduo Lubricating Grease Co., Ltd., T154 from Wuxi Nanfang Petroleum Additives Co., Ltd., and T155 from Jinzhou Kangtai Lubricating Oil Additives Co., Ltd.

[0017] Furthermore, the anti-wear agent is triphenyl thiophosphate.

[0018] Preferably, the triphenyl thiophosphate is selected from one or both of BASF's TPPT and Luoyang Pacific United Petrochemical Co., Ltd.'s T309.

[0019] Furthermore, the metal passivating agent is a benzotriazole derivative with the following general structural formula:

[0020]

[0021] Wherein, R1 is selected from methyl and / or ethyl, and R2 is selected from diisoamylamine, diisobutylamine or diisooctylamine.

[0022] Furthermore, the benzotriazole derivative is a methylbenzotriazole derivative.

[0023] Preferably, the methylbenzotriazole derivative is selected from one or both of IR39 from BASF (China) Co., Ltd. and MF439 from Shanghai Hongze Chemical Co., Ltd.

[0024] Furthermore, the antioxidant is 2,6-di-tert-butyl-p-cresol and an alkylated diphenylamine derivative.

[0025] Preferably, the 2,6-di-tert-butyl-p-cresol is selected from T501 of Lianlong New Materials Co., Ltd.; the alkylated diphenylamine derivative is selected from L57 of BASF (China) Co., Ltd.

[0026] Furthermore, the rust inhibitor is dodecenylsuccinic acid.

[0027] Preferably, the dodecenylsuccinic acid is T746 from Luoyang Pacific United Petrochemical Co., Ltd.

[0028] The present invention also provides a washable bearing oil composition comprising a base oil and any of the washable bearing oil additives described above.

[0029] Further, the washable bearing oil composition comprises, by weight percentage, the following components: 0.05-0.1% dispersant, 0.2-0.4% emulsifier, 0.2-0.4% anti-wear agent, 0.02-0.05% metal passivator, 0.1-0.3% antioxidant, and 0.05-0.1% rust inhibitor, with the balance being base oil.

[0030] Furthermore, the base oil is a 2cst cycloalkyl base oil.

[0031] Preferably, the 2cst naphthenic base oil is selected from No. 10 transformer oil of China National Petroleum Corporation Liaohe Petrochemical Company or No. 10 transformer oil of Karamay Petrochemical Company.

[0032] The present invention also provides a method for preparing any of the above-described washing-type bearing oil compositions, comprising the following steps: placing a dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, rust inhibitor and base oil in a high-speed stirring device and mixing at 50-60°C for 1-2 hours to obtain the composition.

[0033] The present invention also provides the application of any of the above-described washing-type bearing oil additives, any of the above-described washing-type bearing oil compositions, or the washing-type bearing oil compositions prepared by the above-described preparation methods in the preparation of bearing oil for roll grinding machines.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] Using specific surfactants as dispersants and emulsifiers in the washing-type bearing oil composition, the two components exhibit significant synergistic effects. Specifically, the use of emulsifiers not only increases the emulsification effect of the bearing oil composition but also further enhances the dispersion effect of the dispersant; similarly, the use of dispersants not only increases the dispersion effect of the bearing oil composition but also further enhances the emulsification effect of the emulsifier, demonstrating a significant interaction. Simultaneously, water or other contaminants entering the bearing oil are dispersed within it, maintaining the bearing oil's viscosity-temperature stability and excellent corrosion resistance. This provides effective wear and corrosion resistance for the bearings of the roll grinding machine, ensuring stable operation of the grinding equipment, significantly extending the bearing oil change cycle, and reducing equipment maintenance costs.

[0036] On the other hand, this invention uses naphthenic base oils, which have high solubility, excellent emulsion stability, are not prone to stratification, and are environmentally friendly and safe, to replace HVIⅠ and HVIII base oils, thus expanding the types of bearing oils. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are not intended to limit the present invention, but only to illustrate the present invention. Unless otherwise specified, the experimental methods used in the following embodiments are generally performed under conventional conditions. Unless otherwise specified, the materials and reagents used in the following embodiments are commercially available.

[0038] Example 1

[0039] A bearing oil composition, the composition of which is shown in Table 1.

[0040] Table 1. Component composition of the bearing oil composition in Example 1

[0041]

[0042] The preparation method is as follows:

[0043] According to the composition and dosage in Table 1, place the dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, rust inhibitor and base oil in a high-speed mixing device, stir at 50-60℃ and mix for 1-2 hours to obtain the final product.

[0044] Example 2

[0045] A bearing oil composition, the composition of which is shown in Table 2.

[0046] Table 2. Component composition of the bearing oil composition in Example 2

[0047]

[0048] The preparation method is the same as in Example 1.

[0049] Example 3

[0050] A bearing oil composition, the composition of which is shown in Table 3.

[0051] Table 3. Component composition of the bearing oil composition in Example 3

[0052]

[0053] The preparation method is the same as in Example 1.

[0054] Example 4

[0055] A bearing oil composition, the composition of which is shown in Table 4.

[0056] Table 4. Component composition of the bearing oil composition in Example 4

[0057]

[0058] The preparation method is the same as in Example 1.

[0059] Comparative Example 1

[0060] A bearing oil composition, the composition of which is shown in Table 5.

[0061] Table 5. Component composition of the bearing oil composition in Comparative Example 1

[0062]

[0063] The preparation method is the same as in Example 1.

[0064] Comparative Example 2

[0065] A bearing oil composition, the composition of which is shown in Table 6.

[0066] Table 6. Component composition of bearing oil composition in Comparative Example 2

[0067]

[0068] Comparative Example 3

[0069] A bearing oil composition, the composition of which is shown in Table 7.

[0070] Table 7. Component composition of the bearing oil composition in Comparative Example 3

[0071]

[0072] Comparative Example 4

[0073] A bearing oil composition, the composition of which is shown in Table 8.

[0074] Table 8. Component composition of the bearing oil composition in Comparative Example 4

[0075]

[0076]

[0077] The preparation method is the same as in Example 1.

[0078] Comparative Example 5

[0079] A bearing oil composition, the composition of which is shown in Table 9.

[0080] Table 9. Component composition of the bearing oil composition in Example 1

[0081]

[0082] The preparation method is the same as in Example 1.

[0083] Next, the performance of the washing-type bearing oil compositions of Examples 1-4 and Comparative Examples 1-6 was tested. The routine physicochemical test items, test methods and quality standards are shown in Tables 10 and 11, and the test results are shown in Table 12.

[0084] Table 10 Routine Physicochemical Test Items

[0085]

[0086]

[0087] Table 11 Simulation Performance Test Items

[0088] project Quality Indicators Test methods Emulsion stability Clarity and transparency Self-built Particle dispersion stability 9-11 Self-built

[0089] (1) Emulsion stability: Add 5% deionized water and 95% oil sample to a 100mL glass test tube, stir at 54℃ and 1200r / min for 5 minutes, store at room temperature, and observe the time it takes to maintain a uniform and stable emulsion state.

[0090] (2) Particle dispersion stability: Add 1% particles and 99% oil sample to a 100mL glass test tube, shake vigorously and store at room temperature, and observe the time it takes for the particles to disperse evenly in the oil.

[0091] Table 12 Performance test results of washable bearing oil compositions

[0092]

[0093] As can be seen from the table above, the washing-type bearing oil compositions prepared in the various embodiments of the present invention, while ensuring excellent viscosity-temperature properties, anti-wear properties, rust prevention, and corrosion resistance, significantly improve emulsification stability and contaminant dispersibility, exhibiting excellent overall performance. Furthermore, compared to Examples 1 and 3, Comparative Examples 1 and 3 lack suitable dispersants, resulting in a corresponding decrease in dispersion and emulsification effects. Similarly, compared to Examples 2 and 4, Comparative Examples 2 and 4 lack suitable emulsifiers, leading to a corresponding decrease in emulsification and dispersion effects. This demonstrates that the emulsifier of the present invention can enhance the dispersion effect of the dispersant, and the dispersant of the present invention can also enhance the emulsification effect of the emulsifier. Additionally, a comparison between Comparative Example 5 and Example 1 shows that Tween 40 also exhibits good emulsification stability, but poor particle dispersion stability, indicating that only a specific combination of emulsifier and dispersant can achieve the aforementioned synergistic effect.

[0094] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A washing-type bearing oil additive, characterized in that, It comprises the following components: dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, and rust inhibitor; wherein the dispersant is polyisobutylene anhydride and / or polyisobutylene succinimide; and the emulsifier is Tween 80 and / or sodium dodecylbenzene sulfonate.

2. The washing-type bearing oil additive according to claim 1, characterized in that, By weight, it comprises the following components: 0.1-1.0 parts dispersant, 0.1-0.4 parts emulsifier, 0.2-0.4 parts anti-wear agent, 0.02-0.05 parts metal passivator, 0.1-0.3 parts antioxidant and 0.05-0.1 parts rust inhibitor.

3. The washing-type bearing oil additive according to claim 2, characterized in that, By weight, it comprises the following components: 0.5-0.8 parts dispersant, 0.2-0.4 parts emulsifier, 0.3-0.4 parts anti-wear agent, 0.03-0.05 parts metal passivator, 0.2-0.3 parts antioxidant and 0.05-0.08 parts rust inhibitor.

4. The washing-type bearing oil additive according to claim 3, characterized in that, By weight, it comprises the following components: 0.5 parts dispersant, 0.3 parts emulsifier, 0.3 parts anti-wear agent, 0.03 parts metal passivator, 0.3 parts antioxidant and 0.05 parts rust inhibitor.

5. The washing-type bearing oil additive according to claim 1, characterized in that, The polyisobutylene anhydride has the following general structural formula: Where n takes values ​​ranging from 20 to 40, and R1 is glutaric anhydride, maleic anhydride, or maleic anhydride.

6. The washing-type bearing oil additive according to claim 1, characterized in that, The anti-wear agent is triphenyl thiophosphate.

7. The washing-type bearing oil additive according to claim 1, characterized in that, The metal passivating agent is a benzotriazole derivative with the following general structural formula: Wherein, R1 is selected from methyl and / or ethyl, and R2 is selected from diisoamylamine, diisobutylamine or diisooctylamine.

8. The washing-type bearing oil additive according to claim 7, characterized in that, The benzotriazole derivative is a methylbenzotriazole derivative.

9. The washing-type bearing oil additive according to claim 1, characterized in that, The antioxidant is 2,6-di-tert-butyl-p-cresol and an alkylated diphenylamine derivative.

10. The washing-type bearing oil additive according to claim 1, characterized in that, The rust inhibitor is dodecenyl succinic acid.

11. The washing-type bearing oil additive according to any one of claims 1-10, characterized in that, The anti-wear agent is thiophosphate T309; the metal passivating agent is methylbenzotriazole derivative IR39 and / or MF439; the antioxidant is 2,6-di-tert-butylphenol T501 and / or nonyldiphenylamine L57; the dispersant is polyisobutylene succinic anhydride AT-T2007A, polyisobutylene succinic anhydride PIBSA, polyisobutylene succinic anhydride T154 and / or polyisobutylene succinic anhydride T155.

12. The washing-type bearing oil additive according to claim 11, characterized in that, The anti-wear agent is thiophosphate T309; the metal passivator is methylbenzotriazole derivative IR39; the antioxidant is 2,6-di-tert-butylphenol T501 and / or nonyldiphenylamine L57; and the dispersant is polyisobutylene succinic anhydride AT-T2007A or polyisobutylene succinic anhydride T154.

13. A washable bearing oil composition, characterized in that, It includes base oil and the washing-type bearing oil additive as described in any one of claims 1-12.

14. The washable bearing oil composition according to claim 13, characterized in that, The product comprises, by weight percentage, the following components: 0.05-0.1% dispersant, 0.2-0.4% emulsifier, 0.2-0.4% anti-wear agent, 0.02-0.05% metal passivator, 0.1-0.3% antioxidant, and 0.05-0.1% rust inhibitor, with the balance being base oil.

15. The washable bearing oil composition according to claim 14, characterized in that, The base oil is a 2cst cycloalkyl base oil.

16. The method for preparing the washable bearing oil composition according to any one of claims 13-15, characterized in that, The process includes the following steps: placing the dispersant, emulsifier, anti-wear agent, metal passivator, antioxidant, rust inhibitor, and base oil in a high-speed mixing device and blending them at 50-60℃ for 1-2 hours to obtain the final product.

17. The use of the washing-type bearing oil additive according to any one of claims 1-12, the washing-type bearing oil composition according to any one of claims 13-15, or the washing-type bearing oil composition prepared by the preparation method according to claim 16 in the preparation of bearing oil for roll grinding machines.

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