A wind power gear oil composition with excellent wear resistance and durability

Abstract

The present invention provides a wind power gear oil composition with excellent anti-wear and durability, which comprises, by weight: 1.0-2.0 parts of extreme pressure anti-wear agent; 0.04-0.15 parts of metal deactivator; 0.3-0.8 parts of antioxidant; 0-0.05 parts of anti-foaming agent; 5-15 parts of ester oil; the balance is base oil. Beneficial effects of the present invention: The wind power gear oil composition with excellent anti-wear and durability provided by the present invention has good anti-wear and anti-wear durability performance, anti-oxidation, load-bearing, anti-corrosion, anti-rust, anti-foaming, and anti-emulsification performance, and is suitable for lubricating wind turbine gearboxes with strict requirements on anti-wear and durability performance.

Description

Technical Field

[0001] The invention belongs to the technical field of lubrication, and in particular relates to a wind power gear oil composition with excellent wear resistance and durability. Background Art

[0002] Wind energy is one of the most abundant renewable energy sources in the world.

[0003] The rapid development of wind power installed capacity has brought significant economic and social benefits to enterprises. However, there are also some problems in the field of wind turbine lubrication. Summary of the invention

[0004] In view of this, the present invention aims to propose a wind power gear oil composition with excellent anti-wear durability to solve at least one problem in the background technology, and adopts a compound of extreme pressure anti-wear agents with high reactivity, low reactivity, antioxidant properties and high thermal stability, so that the oil product will not show obvious attenuation of anti-wear performance and high iron content in the long-term use process.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A wind power gear oil composition with excellent anti-wear durability comprises the following components by mass percentage:

[0007]

[0008] Furthermore, the following components are included in percentage by mass:

[0009]

[0010] Furthermore, an anti-emulsifier is included, and the concentration of the anti-emulsifier is 5-15 ppm. Preferably, the concentration of the anti-emulsifier is 5-12 ppm.

[0011] Furthermore, the extreme pressure anti-wear agent is one or more of polynitrogen phosphorus-containing additives, acidic phosphate amine salts, tricresyl phosphate, triphenyl thiophosphate, aminothiocarboxylate, and dialkyl dithiophosphate.

[0012] The polynitrogen phosphorus-containing additive is a self-made additive, prepared from the following raw materials: alkyl alcohol, phosphorus pentoxide, melamine and non-alcoholic solvent, ion exchange resin catalyst;

[0013] Preferably, the molar ratio of the alkyl alcohol to phosphorus pentoxide is 3:1-4:1, and the molar ratio of the melamine to phosphorus pentoxide is 0.3:1-1:1.

[0014] Preferably, the amount of ion exchange resin catalyst added is 0.5-2% of the total raw material mass (excluding solvent).

[0015] Preferably, the mass ratio of the non-alcohol solvent to the sum of the other four raw materials is 0.6:1-1:1.

[0016] Furthermore, the non-alcohol solvent is xylene or toluene.

[0017] Furthermore, the alkyl alcohol is n-octanol or isooctyl alcohol.

[0018] Furthermore, the ion exchange resin catalyst is a strong basic anion resin.

[0019] The preparation of polynitrogen phosphorus-containing additives comprises the following steps:

[0020] A1. Add phosphorus pentoxide into a non-alcoholic solvent and stir to make it evenly dispersed to obtain a mixture I;

[0021] A2, heating the mixture I to below 40°C, adding alkyl alcohol dropwise, and then continuing to heat to 70-90°C, reacting for 2-6 hours to obtain an intermediate product;

[0022] A3, after cooling the intermediate product, melamine and ion exchange resin catalyst are added, and then heated to 110-130° C. again under nitrogen protection and reacted for 2-6 hours to obtain mixture II;

[0023] A4. Filter the mixture II obtained in step C to remove the catalyst and other impurities, and distill to remove the non-alcoholic solvent to obtain the polynitrogen phosphorus-containing additive.

[0024] Furthermore, the reaction temperature of step A2 is 75-85° C., and the reaction time is 3-5 hours.

[0025] Furthermore, the reaction temperature of step A3 is 115-125° C., and the reaction time is 4-6 hours.

[0026] Furthermore, the metal deactivator includes a benzotriazole derivative.

[0027] The benzotriazole derivatives include one or more of benzotriazole octadecylamine salt, benzotriazole octadecylamine salt and N,N-di-n-butylaminomethylenebenzotriazole.

[0028] Furthermore, the antioxidant includes two or three of phenolic antioxidants, amine antioxidants, and high molecular weight phenolic antioxidants.

[0029] Furthermore, the antifoaming agent includes one or more of a silicon-based antifoaming agent, a non-silicon-based antifoaming agent, and a composite antifoaming agent. For example, a combination of a silicon-based antifoaming agent and a non-silicon-based antifoaming agent; or a combination of a non-silicon-based antifoaming agent and a composite antifoaming agent.

[0030] Further, the base oil is a mixture of ester oil and PAO;

[0031] The ester oil includes one or more of polyol esters and / or diesters;

[0032] The PAO includes one or both of PAO40 and PAO100.

[0033] Further, the polyol ester includes one or two of pentaerythritol fatty acid ester and trimethylolpropane octanedecanoic acid ester;

[0034] The diester includes one or both of diisononyl sebacate and diisodecyl adipate.

[0035] Furthermore, the anti-emulsifier is one or both of polyether and acrylate.

[0036] Preferably, the demulsifier is polyether+acrylate.

[0037] In order to meet the requirements of excellent anti-wear and durability of oil products, the present invention introduces a multi-nitrogen phosphorus-containing additive on the basis of using a compound of traditional extreme pressure anti-wear agents with high reactivity, low reactivity, antioxidant performance and high thermal stability, thereby effectively improving the anti-wear and durability of oil products, so that the anti-wear performance of oil products will not be significantly attenuated and the iron content in the oil will not be high during long-term use.

[0038] Compared with the prior art, the wind power gear oil composition with excellent anti-wear durability described in the present invention has the following advantages:

[0039] The present invention provides a wind power gear oil composition with excellent anti-wear and durability. Through the coordination and interaction of various raw materials, the product has excellent anti-wear and anti-wear durability, load-bearing, anti-rust and anti-corrosion, anti-oxidation, anti-foaming and anti-emulsification properties, and is suitable for lubrication of wind power generator gear boxes. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0041] The present invention will be described in detail below with reference to examples.

[0042] In the following examples, acidic phosphate amine salt was purchased from Shenyang Hualun Lubricant Additive Co., Ltd., code T308; triphenyl thiophosphate was purchased from Jinzhou Shengda Chemical Co., Ltd., code T309. Triphenyl thiophosphate (imported product) was purchased from BASF, code IR211. Tricresol phosphate was purchased from Zibo Huihua Petroleum Additive Co., Ltd., code T306. Aminothiocarboxylate was purchased from Shenyang Hualun Lubricant Additive Co., Ltd., code T323. Dialkyl dithiophosphate (imported product) was purchased from BASF, code IR353. N,N-di-n-butylaminomethylenebenzotriazole was purchased from Jinzhou Xinxing Petroleum Additives Co., Ltd., code-named T551; benzotriazole derivatives were purchased from Changsha Wangcheng Petrochemical Co., Ltd., code-named T553. 2,6-di-tert-butyl-p-methylphenol was purchased from Jinzhou Xinxing Petroleum Additives Co., Ltd., code-named T501; high molecular weight hindered phenol antioxidant was purchased from Jinzhou Xinxing Petroleum Additives Co., Ltd., code-named L5135; octyl / butyl diphenylamine was purchased from Jinzhou Xinxing Petroleum Additives Co., Ltd., code-named T557; N-phenyl-α-naphthylamine was purchased from Jinzhou Shengda Chemicals Co., Ltd., code-named T531. Silicone antifoaming agent was purchased from Jinzhou Xinxing Petroleum Additive Co., Ltd., code T903; non-silicon antifoaming agent was purchased from Jiangsu Tengda Additive Co., Ltd., code T911; composite antifoaming agent was purchased from Jinzhou Shengda Chemical Co., Ltd., code T921; composite antifoaming agent was purchased from a German company, code 155. Fatty acid pentaerythritol ester was purchased from Croda Company, code 3970; PAO40 and PAO100 base oils were purchased from Mobil. Polyether + acrylate anti-emulsifier was purchased from Kelong Chemical Glass Instrument Supply Station in Weibin District, Baoji City, code LZ5957.

[0043] The specific preparation steps of the polynitrogen phosphorus-containing additive are as follows:

[0044] A. Add 0.1 mol of phosphorus pentoxide into 90 g of xylene agent and stir to make it dispersed evenly to obtain mixture I;

[0045] B. Heat the mixture I to below 40°C, add 0.3 mol of isooctyl alcohol dropwise, and then continue to heat to 78°C and react for 4 hours to obtain an intermediate product;

[0046] C. After cooling the intermediate product, 0.5 mol of melamine and 1.2 g of a strong alkaline anion exchange resin catalyst were added, and the mixture was heated to 120° C. again under nitrogen protection and reacted for 6 hours to obtain a mixture II;

[0047] D. Filter the mixture II obtained in step C to remove the catalyst and other impurities, and distill to remove the non-alcoholic solvent to obtain the polynitrogen phosphorus-containing additive.

[0048] Example 1

[0049] This embodiment provides a wind power gear oil composition with excellent anti-wear durability, and the specific composition is as follows:

[0050] Acidic phosphate amine salt (T306) is 0.3 g, acidic phosphate amine salt (T308) is 0.3 g, triphenyl thiophosphate (T309) is 0.3 g, dialkyl dithiophosphate (IR353) is 0.3 g, aminothiocarboxylate (T323) is 0.3 g, and polynitrogen phosphorus-containing additives are 0.3 g;

[0051] Benzotriazole derivative (T553) is 0.05 g, N,N-di-n-butylaminomethylenebenzotriazole (T551) is 0.05 g;

[0052] 2,6-di-tert-butyl-p-methylphenol (T501) is 0.2g, octyl / butyl diphenylamine (T557) is 0.2g, high molecular weight hindered phenol antioxidant (L5135) is 0.2g, antifoaming agent (T911) is 0.03g, fatty acid pentaerythritol ester (3970) is 10g, the total amount is 100g, and the rest is PAO6 and PAO40. LZ5957 is added at 8ppm.

[0053] The preparation method is as follows:

[0054] The above raw materials are mixed (solid additives and a small amount of additives are added first, then a large amount of additives are added, and finally the base oil is added), the temperature is raised to 66° C. and stirred for 1.0 h to obtain the wind power gear oil with excellent anti-wear durability.

[0055] Example 2

[0056] This embodiment provides a wind power gear oil composition with excellent anti-wear durability, and the specific composition is as follows:

[0057] Acidic phosphate amine salt (T306) is 0.3 g, acidic phosphate amine salt (T308) is 0.3 g, triphenyl thiophosphate (T309) is 0.3 g, dialkyl dithiophosphate (IR353) is 0.3 g, aminothiocarboxylate (T323) is 0.4 g, and polynitrogen phosphorus-containing additives are 0.4 g;

[0058] Benzotriazole derivative (T553) is 0.04g, N,N-di-n-butylaminomethylenebenzotriazole (T551) is 0.04g;

[0059] 2,6-di-tert-butyl-p-methylphenol (T501) is 0.3 g, octyl / butyl diphenylamine (T557) is 0.3 g, and N-phenyl-α-naphthylamine (T531) is 0.2 g;

[0060] Antifoaming agent (155) 0.03g, ester oil (3970) 10g, total 100g, the rest is PAO (PAO40 and PAO100), LZ5957 is added 12ppm.

[0061] The preparation method is similar to that of Example 1.

[0062] Example 3

[0063] This embodiment provides a wind power gear oil composition with excellent anti-wear durability, and the specific composition is as follows:

[0064] Acidic phosphate amine salt (T306) is 0.3 g, acidic phosphate amine salt (T308) is 0.3 g, triphenyl thiophosphate (T309) is 0.3 g, dialkyl dithiophosphate (IR353) is 0.3 g, aminothiocarboxylate (T323) is 0.3 g, and polynitrogen phosphorus-containing additives are 0.4 g;

[0065] N,N-di-n-butylaminomethylenebenzotriazole (T551) 0.08g;

[0066] 2,6-di-tert-butyl-p-methylphenol (T501) 0.25g, high molecular weight hindered phenol antioxidant (L5135) 0.2g, N-phenyl-α-naphthylamine (T531) 0.2g; composite antifoaming agent (T921) 0.015g, silicon antifoaming agent (T903) 0.015g; fatty acid pentaerythritol ester (3970) 9g, total 100g, the rest is PAO (PAO40 and PAO100). LZ5957 is added 6ppm.

[0067] The preparation method is as follows:

[0068] The above raw materials are mixed (solid additives and a small amount of additives are added first, then a large amount of additives are added, and finally the base oil is added), the temperature is raised to 66° C. and stirred for 1.0 h to obtain the wind power gear oil with excellent anti-wear durability.

[0069] The preparation method is similar to that of Example 1.

[0070] In order to evaluate the performance of the present invention, imported and domestic wind power gear oils of the same viscosity grade were used as references. At the same time, a formula without polynitrogen phosphorus-containing additives was prepared as a comparative example.

[0071] Comparative Example 1

[0072] Acidic phosphate amine salt (T306) is 0.36 g, acidic phosphate amine salt (T308) is 0.36 g, triphenyl thiophosphate (T309) is 0.36 g, dialkyl dithiophosphate (IR353) is 0.36 g, aminothiocarboxylate (T323) is 0.36 g;

[0073] Benzotriazole derivative (T553) is 0.05 g, N,N-di-n-butylaminomethylenebenzotriazole (T551) is 0.05 g;

[0074] 2,6-di-tert-butyl-p-methylphenol (T501) is 0.2g, octyl / butyl diphenylamine (T557) is 0.2g, high molecular weight hindered phenol antioxidant (L5135) is 0.2g, antifoaming agent (T911) is 0.03g, fatty acid pentaerythritol ester (3970) is 10g, the total amount is 100g, and the rest is PAO6 and PAO40. LZ5957 is added at 8ppm.

[0075] The preparation method is as follows:

[0076] The above raw materials are mixed (solid additives and a small amount of additives are added first, then a large amount of additives are added, and finally the base oil is added), the temperature is raised to 66° C. and stirred for 1.0 h to obtain the wind power gear oil with excellent anti-wear durability.

[0077] Comparative Example 2

[0078] This embodiment provides a wind power gear oil composition with excellent anti-wear durability, and the specific composition is as follows:

[0079] Acidic phosphate amine salt (T306) is 0.4 g, acidic phosphate amine salt (T308) is 0.4 g, triphenyl thiophosphate (T309) is 0.4 g, dialkyl dithiophosphate (IR353) is 0.4 g, aminothiocarboxylate (T323) is 0.4 g;

[0080] Benzotriazole derivative (T553) is 0.04g, N,N-di-n-butylaminomethylenebenzotriazole (T551) is 0.04g;

[0081] 2,6-di-tert-butyl-p-methylphenol (T501) is 0.3 g, octyl / butyl diphenylamine (T557) is 0.3 g, and N-phenyl-α-naphthylamine (T531) is 0.2 g;

[0082] Antifoaming agent (155) 0.03g, ester oil (3970) 10g, total 100g, the rest is PAO (PAO40 and PAO100), LZ5957 is added 12ppm.

[0083] The preparation method is similar to that of Example 1.

[0084] Comparison of main performances between the embodiment and the comparative example:

[0085] The main properties of the embodiments and comparative examples were investigated, including anti-wear durability, anti-abrasion, load-bearing, anti-corrosion, anti-rust, anti-emulsification and anti-foaming properties.

[0086] The specific results are shown in Tables 1 and 2.

[0087] Table 1 Wear resistance of the embodiment and comparative example after 121°C, 72h oven oxidation (four-ball machine test: 196N, 7h, 1800r / min, 54°C)

[0088] project Foreign products Domestic products Comparative Example 1 Comparative Example 2 Example 1 Implementation 2 Implementation 3 Wear spot diameter / mm 0.75 0.90 0.85 0.88 0.78 0.75 0.76 Average friction coefficient 0.050 0.042 0.056 0.054 0.046 0.048 0.046 Iron content / (mg / kg) 15 42 52 55 7 4 5

[0089] From the results in Table 1, it can be seen that the domestic products and comparative examples have poor anti-wear performance and the iron content in the oil is relatively high, indicating that the lubricating oil composition of the present invention has good anti-wear and durability performance and meets the requirements of long-term anti-wear effectiveness of wind turbine gear lubrication.

[0090] Table 2 Comparison of main performances between the implementation examples and the comparative examples

[0091]

[0092] From the results in Table 2, it can be seen that the load (P B ), anti-wear (d 196 ), anti-rust, anti-corrosion, anti-emulsification and anti-foaming properties are better than or equal to those of domestic and foreign products and comparative examples. This shows that the wind power gear oil composition of the present invention has excellent comprehensive properties.

[0093] In order to further illustrate the present invention, the compounding of the additives in the formula of Example 1 is described in detail.

[0094] Extreme pressure anti-wear agent (T306, T308, T309, IR353, T323, polynitrogen phosphorus additives) 1.8%, metal deactivator (T553, T551) 0.10%, antioxidant (T501, T557, L5135) 0.6%, anti-foaming agent (155) 0.03%, ester oil (3970) 10%, PAO (PAO6 and PAO40) balance. LZ5957 plus 8ppm

[0095] The reason why Example 1 has good wear resistance and other comprehensive properties is closely related to the additives and their matching. In particular, the introduction of polynitrogen phosphorus-containing additives plays an important role. Among the extreme pressure anti-wear agents, T306 is tricresyl phosphate, which has low activity and good wear resistance at low loads; T308 is an acidic phosphate amine salt, which has high activity and plays an anti-wear role at high temperature and high load, and also has a certain anti-rust effect; T309 has good extreme pressure anti-wear and thermal stability, which can improve the oil bearing, wear resistance and oxidation resistance, IR353 has high activity and can improve the oil bearing capacity, T323 is a multifunctional agent with oxidation resistance and wear resistance, which plays a long-term wear resistance role. Polynitrogen phosphorus-containing additives are laboratory homemade products with excellent wear resistance. The nitrogen element in the additive can be adsorbed on the friction pair surface for a long time, playing a long-term and effective wear resistance role. Metal deactivators T551 and T553 are both benzotriazole derivatives. The combination of the two can effectively inhibit the corrosion of highly active extreme pressure anti-wear agents. T501 is a phenolic antioxidant with significant antioxidant effect below 100°C, T557 is an amine high-temperature antioxidant, and L5135 is a high-molecular-weight phenolic high-temperature antioxidant. Both have significant antioxidant effects above 100°C. The compounding of these three antioxidants significantly improves the antioxidant properties of oil products. 155 antifoaming agent is a composite product with excellent and lasting antifoaming properties; the combination of ester oil 3970 and PAO can solve the problem of poor solubility of additives in PAO base oil, and is also conducive to the compatibility of oil products with sealing materials. LZ5957 has excellent anti-emulsification properties, and adding a small amount can make the oil have excellent water separation ability.

[0096] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a wind power gear oil composition with excellent anti-wear durability of the present invention, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0097] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0098] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind power gear oil composition with excellent anti-wear durability, characterized in that: Calculated by mass percentage, it includes the following components: 1.0-2.0 parts of extreme pressure anti-wear agent; Metal deactivator 0.04-0.15 parts; Antioxidant 0.3-0.8 parts; Antifoaming agent 0-0.05 parts; 5-15 parts of ester oil; The balance is base oil; The extreme pressure anti-wear agent is acidic phosphate amine salt, tricresyl phosphate, triphenyl thiophosphate, dialkyl dithiophosphate, aminothiocarboxylate and polynitrogen phosphorus-containing additives; The polynitrogen phosphorus-containing additive is a self-made additive, prepared from the following raw materials: alkyl alcohol, phosphorus pentoxide, melamine and non-alcoholic solvent, ion exchange resin catalyst; The preparation of polynitrogen phosphorus-containing additives comprises the following steps: A1. Add phosphorus pentoxide into a non-alcoholic solvent and stir to make it evenly dispersed to obtain a mixture I; A2, heating the mixture I to below 40°C, adding alkyl alcohol dropwise, and then continuing to heat to 70-90°C, reacting for 2-6 hours to obtain an intermediate product; A3, after cooling the intermediate product, melamine and ion exchange resin catalyst are added, and then heated to 110-130° C. again under nitrogen protection and reacted for 2-6 hours to obtain mixture II; A4. Filter the mixture II obtained in step C to remove the catalyst and other impurities, and distill off the non-alcoholic solvent to obtain the polynitrogen phosphorus-containing additive.

2. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: Calculated by mass percentage, it includes the following components: 1.2-2.0 parts of extreme pressure anti-wear agent; Metal deactivator 0.04-0.10 parts; Antioxidant 0.4-0.7 parts; Antifoaming agent 0-0.03 parts; 7-12 parts of ester oil; The balance is base oil.

3. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: An anti-emulsifier is also included, and the concentration of the anti-emulsifier is 5-15 ppm.

4. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: The concentration of the demulsifier is 5-12 ppm.

5. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: The molar ratio of the alkyl alcohol to phosphorus pentoxide is 3:1-4:1, and the molar ratio of the melamine to phosphorus pentoxide is 0.3:1-1:

1.

6. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: The amount of ion exchange resin catalyst added is 0.5-2% of the total raw material mass, wherein the total raw material mass does not contain solvent.

7. The wind power gear oil composition with excellent anti-wear durability according to claim 1, characterized in that: The mass ratio of the non-alcohol solvent to the sum of the other four raw materials is 0.6:1-1:

1.

8. A wind power gear oil composition with excellent anti-wear durability according to claim 1 or 2, characterized in that: The metal deactivator includes a benzotriazole derivative; The antioxidant is 2,6-di-tert-butyl-p-methylphenol, octyl / butyl diphenylamine, and a high molecular weight hindered phenol antioxidant; The antifoaming agent includes one or more of silicon-based antifoaming agents, non-silicon-based antifoaming agents, and composite antifoaming agents.

9. A wind power gear oil composition with excellent anti-wear durability according to claim 1 or 2, characterized in that: The base oil is a mixture of ester oil and PAO; The ester oil includes one or more of polyol esters and / or diesters; The PAO includes one or both of PAO40 and PAO100.

10. A wind power gear oil composition with excellent anti-wear durability according to claim 1 or 2, characterized in that: The polyol ester includes one or both of pentaerythritol fatty acid ester and trimethylolpropane octanedecanoic acid ester; The diester includes one or both of diisononyl sebacate and diisodecyl adipate.

11. The wind power gear oil composition with excellent anti-wear durability according to claim 3, characterized in that: The anti-emulsifier is one or both of polyether and acrylate.

Images