Low-carbon environmental protection high-performance industrial gear oil and preparation method and application thereof

Abstract

The application belongs to the technical field of lubricating oil, and particularly relates to a low-carbon environment-friendly high-performance industrial gear oil as well as a preparation method and application thereof. The low-carbon environment-friendly high-performance industrial gear oil comprises the following components in parts by weight: base oil 70-120 parts, antioxidant 0.1-1 part, anti-wear agent 0.1-1 part, extreme pressure agent 0.2-1 part, metal deactivator 0.05-0.5 part, antirust agent 0.05-0.5 part, anti-emulsifier 0.005-0.1 part, and anti-foaming agent 0.01-0.5 part; the base oil comprises degradable polyol ester 10-30 parts and poly-alpha olefin 60-90 parts. The low-carbon environment-friendly high-performance industrial gear oil has excellent comprehensive performance, has a repairing function on aging and wear of mechanical equipment, can improve the antioxidation performance, has lubricating performance, biodegradability, corrosion and rust prevention, extreme pressure and anti-wear, anti-emulsification and other performances, and can solve the problem of excessive odor of traditional gear oil.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lubricating oil, and particularly relates to a low-carbon environment-friendly high-performance industrial gear oil and a preparation method and application thereof. BACKGROUND

[0002] Industrial gear oil is widely used in closed gear devices in the metallurgical, mining and metal processing industries. With the development of science and technology and industrial production, gear transmission is developing towards the direction of small size, light weight, high speed, heavy load and high power. Therefore, the oil used for gears is required to have wider viscosity-temperature performance, more excellent load-carrying capacity, higher transmission efficiency and longer service life, and also has high biodegradability and lubricating properties, and is suitable for formulating environment-friendly industrial gear oil.

[0003] With the development of industrial gear equipment and the diversification of industrial gear oil specifications, the requirements for gear lubrication are continuously improved, and the advantages of synthetic industrial gear oil are increasingly apparent. However, the existing synthetic industrial gear oil has single performance and cannot achieve good comprehensive performance, and also has poor stability and needs to be replaced frequently, and has too much odor, which cannot bring good use experience. Therefore, it is urgent to develop an industrial gear oil with excellent comprehensive performance and meeting the requirements of energy saving, environmental protection and safety. SUMMARY

[0004] The application aims to provide a low-carbon environment-friendly high-performance industrial gear oil and a preparation method and application thereof. The low-carbon environment-friendly high-performance industrial gear oil has excellent comprehensive performance, has certain repair function for aging and wear of mechanical equipment, comprehensively improves the antioxidant performance, and has lubricating performance, biodegradability, corrosion and rust prevention, extreme pressure and wear resistance, emulsion resistance and other properties, and can also solve the problem of too much odor of traditional gear oil.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme: a low-carbon environment-friendly high-performance industrial gear oil comprises the following components in parts by weight: base oil 70-120 parts, antioxidant 0.1-1 part, anti-wear agent 0.1-1 part, extreme pressure agent 0.2-1 part, metal deactivator 0.05-0.5 part, rust inhibitor 0.05-0.5 part, anti-emulsifier 0.005-0.1 part, and anti-foaming agent 0.01-0.5 part.

[0006] The base oil comprises degradable polyol ester 10-30 parts and poly-alpha olefin 60-90 parts.

[0007] Preferably, the low-carbon environment-friendly high-performance industrial gear oil comprises the following components by weight: base oil 90-105 parts, antioxidant 0.2-0.5 parts, anti-wear agent 0.2-0.5 parts, extreme pressure agent 0.4-0.8 parts, metal deactivator 0.1-0.2 parts, anti-rust agent 0.1-0.2 parts, anti-emulsifier 0.01-0.02 parts, anti-foaming agent 0.02-0.1 parts.

[0008] Preferably, the base oil comprises degradable polyol ester 20-25 parts and poly-alpha olefin 70-80 parts.

[0009] Preferably, the 40℃ kinematic viscosity of the degradable polyol ester is 18-22mm 2 / S per 100 parts by weight.

[0010] More preferably, the 40℃ kinematic viscosity of the degradable polyol ester is 18.5-20.5mm 2 / S per 100 parts by weight.

[0011] Preferably, the poly-alpha olefin is a combination of poly-alpha olefin-1 with a viscosity index of 130-160 and poly-alpha olefin-2 with a viscosity index of 180-200.

[0012] Preferably, the mass ratio of poly-alpha olefin-1 to poly-alpha olefin-2 is (75-85):(15-25). If the ratio of poly-alpha olefin-1 to poly-alpha olefin-2 is not appropriate, it may result in insufficient oil film strength and thickness of the prepared gear oil, excessive wear, insufficient oil film thickness, poor oil film strength, and difficulty in forming an oil film with sufficient thickness on the friction surface under high temperature and high pressure, so that the machine parts cannot be normally lubricated.

[0013] More preferably, the mass ratio of poly-alpha olefin-1 to poly-alpha olefin-2 is 81:19.

[0014] Preferably, the antioxidant is a liquid high molecular weight phenolic ester.

[0015] More preferably, the antioxidant is 3,5-di(1,1-dimethyl ethyl)-4-hydroxy-C7-9-branched alkyl phenylpropionate. The present application cannot meet the final requirements and achieve better performance by selecting other types of antioxidant components.

[0016] In the present application, the addition of the antioxidant in the formula component not only effectively improves the antioxidant performance of the industrial gear oil, but also has certain detergency through the interaction with other components, and achieves better solubility.

[0017] Preferably, the anti-wear agent is boronized thiophosphoric acid amine salt.

[0018] Preferably, the extreme pressure agent is sulfurized isobutylene prepared by normal pressure and high pressure processes.

[0019] Preferably, the metal deactivator comprises at least one of thiazole derivatives, benzotriazole derivatives.

[0020] Preferably, the rust inhibitor comprises at least one of synthetic barium sulfonate, barium dinonylnaphthalene sulfonate.

[0021] Preferably, the anti-emulsifier comprises at least one of tetrapropylene oxide derivatives, ethers.

[0022] Preferably, the anti-foaming agent is at least one of dimethyl silicone oil, non-silicon type anti-foaming agent, organically modified siloxane.

[0023] The application selects degradable base oil and medium-high viscosity base oil as base oil components, and through the interaction between the anti-wear agent, extreme pressure agent, antioxidant and other components, the comprehensive performance of the prepared industrial gear oil can be effectively improved. The combination of the anti-wear agent and the extreme pressure agent can not only significantly improve the extreme pressure performance, but also effectively solve the odor problem existing in the traditional gear oil. The combination of the antioxidant, the metal deactivator, the rust inhibitor and the anti-emulsifier can effectively inhibit oxidation and corrosion, and improve the penetration rust removal, loose lubrication, corrosion resistance, protection and repair of the industrial gear oil.

[0024] The application also claims a preparation method of the low-carbon environment-friendly high-performance industrial gear oil, comprising the following steps:

[0025] The raw materials are mixed, stirred, cooled and placed to prepare the low-carbon environment-friendly high-performance industrial gear oil.

[0026] Preferably, the temperature of the mixing is 45-65 DEG C.

[0027] Preferably, the stirring speed is 1000-2000 r / min, and the stirring time is 2-3 h.

[0028] Preferably, the standing time is 2-3 h. The cooling is to reduce the temperature to room temperature.

[0029] The application also claims the application of the low-carbon environment-friendly high-performance industrial gear oil in the field of lubricating oil.

[0030] Compared with the prior art, the application has the following beneficial effects:

[0031] The low-carbon environment-friendly high-performance industrial gear oil has excellent comprehensive performance, has certain repair function on aging wear of mechanical equipment, can comprehensively improve the performance of oxidation resistance, lubrication, biodegradability, corrosion and rust prevention, extreme pressure and wear resistance, emulsion resistance and the like, prolongs the oil change period, and simultaneously solves the problem of too large odor of traditional gear oil, and improves the applicability of the industrial gear oil. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the embodiments and comparative examples, the experimental methods used are conventional methods, and the materials, reagents and the like used are commercially available unless otherwise specified.

[0034] The component source information selected in the embodiments and comparative examples of the present application is as follows:

[0035] Biodegradable polyol ester: Priolube 3970, Cargill, 40℃ kinematic viscosity of 20mm 2 / S, viscosity index ≥140;

[0036] Lu'an 4# base oil, Lu'an, API base oil classification three base oil, viscosity in 4cst base oil, 40℃ kinematic viscosity is 17.78mm 2 / S, viscosity index is 142;

[0037] Polyalphaolefin: mixture of PAO40 and PAO150, the ratio of PAO40 and PAO150 is 19:81, Mobil;

[0038] Antioxidant: 3,5-di(1,1-dimethyl ethyl)-4-hydroxy-C7-9-alkyl branched phenylpropionic acid ester, IRGANOXL135, BASF;

[0039] T541 copper salt compound, Shanghai Greening;

[0040] Anti-wear agent: boronized thiophosphoric acid ester ammonium salt T310, Lanzhou Refinery;

[0041] T308 amine salt of acid phosphate, Xippon;

[0042] Extreme pressure agent: sulfurized isobutylene T321H prepared by high pressure process, Lubrizol;

[0043] Sulfurized isobutylene T321 prepared by atmospheric process, Shenyang North Petroleum;

[0044] Metal deactivator: benzotriazole derivative T551, Panhua Chemical;

[0045] Thiadiazole derivative T561, Jinzhou Shengda;

[0046] Rust inhibitor: synthetic barium sulfonate T701B, Risheng Research and Development;

[0047] Barium dinonylnaphthalene sulfonate T705, Jinzhou Shengda;

[0048] Demulsifier: tetrapropylene oxide derivative T1001, Nanjing Lianrun;

[0049] Ether DL32, Jinzhou Shengda, polyethylene oxide-propylene oxide ether;

[0050] Antifoaming agent: dimethyl silicone oil mixture, Bote 1#, Jinzhou Bote;

[0051] Silicon-free antifoaming agent LZ889D, Lubrizol;

[0052] Organically modified siloxane V14-520, Wacker.

[0053] Example 1

[0054] Components: base oil: 10 parts of degradable polyol ester and 73 parts of poly-alpha olefin, 0.1 part of antioxidant, 0.1 part of anti-wear agent, 0.2 part of extreme pressure agent, 0.05 part of metal deactivator, 0.05 part of rust inhibitor, 0.005 part of demulsifier, and 0.01 part of antifoaming agent.

[0055] Preparation method: under the condition of 45°C and 1000r / min stirring, the anti-wear agent ammonium salt of boronized thiophosphoric acid ester, the antioxidant liquid high molecular weight phenolic ester, the extreme pressure agent sulfurized isobutylene prepared by atmospheric and high pressure processes, the metal deactivator benzotriazole derivative, the rust inhibitor synthetic barium sulfonate, the tetrapropylene oxide derivative demulsifier, and the dimethyl silicone oil mixture were added into the base oil, stirred for 2h, and then allowed to stand for 2h. After filtration, the low-carbon environment-friendly high-performance industrial gear oil was prepared.

[0056] Example 2

[0057] Components: base oil: 30 parts of degradable polyol ester and 90 parts of poly-alpha olefin, 1 part of antioxidant, 1 part of anti-wear agent, 1 part of extreme pressure agent, 0.5 part of metal deactivator, 0.5 part of rust inhibitor, 0.1 part of demulsifier, and 0.5 part of antifoaming agent.

[0058] Preparation method: under the condition of 65℃, 2000r / min stirring, anti-wear agent boronized thiophosphoric acid ester ammonium salt, antioxidant liquid high molecular weight phenolic ester, extreme pressure agent sulfurized isobutylene prepared by normal pressure and high pressure process, metal deactivator benzene triazole derivative, rust inhibitor synthetic barium sulfonate, tetrapolyoxypropylene derivative anti-emulsifier, silicone anti-foaming agent were added into base oil, stirring for 3h, standing for 3h, filtering, the low carbon environmental protection high performance industrial gear oil was prepared.

[0059] Example 3

[0060] Components: base oil: biodegradable polyol ester 20 parts and poly alpha olefin 70 parts, antioxidant 0.2 parts, anti-wear agent 0.2 parts, extreme pressure agent 0.4 parts, metal deactivator 0.1 parts, rust inhibitor 0.1 parts, anti-emulsifier 0.01 parts, anti-foaming agent 0.02 parts.

[0061] Preparation method: under the condition of 55℃, 1600r / min stirring, anti-wear agent boronized thiophosphoric acid ester ammonium salt, antioxidant liquid high molecular weight phenolic ester, extreme pressure agent sulfurized isobutylene prepared by normal pressure and high pressure process, metal deactivator benzene triazole derivative, rust inhibitor synthetic barium sulfonate, tetrapolyoxypropylene derivative anti-emulsifier, organic modified siloxane were added into base oil, stirring for 3h, standing for 3h, filtering, the low carbon environmental protection high performance industrial gear oil was prepared.

[0062] Example 4

[0063] Components: base oil: biodegradable polyol ester 25 parts and poly alpha olefin 80 parts, antioxidant 0.5 parts, anti-wear agent 0.5 parts, extreme pressure agent 0.8 parts, metal deactivator 0.2 parts, rust inhibitor 0.2 parts, anti-emulsifier 0.02 parts, anti-foaming agent 0.1 parts.

[0064] Preparation method: under the condition of 55℃, 1600r / min stirring, anti-wear agent boronized thiophosphoric acid ester ammonium salt, antioxidant liquid high molecular weight phenolic ester, extreme pressure agent sulfurized isobutylene prepared by normal pressure and high pressure process, metal deactivator benzene triazole derivative, rust inhibitor synthetic barium sulfonate, tetrapolyoxypropylene derivative anti-emulsifier, dimethyl silicone oil mixture were added into base oil, stirring for 3h, standing for 3h, filtering, the low carbon environmental protection high performance industrial gear oil was prepared.

[0065] Example 5

[0066] Components: base oil: biodegradable polyol ester 20 parts and poly alpha olefin 70 parts, antioxidant 0.2 parts, anti-wear agent 0.2 parts, extreme pressure agent 0.4 parts, metal deactivator 0.1 parts, rust inhibitor 0.1 parts, anti-emulsifier 0.01 parts, anti-foaming agent 0.02 parts.

[0067] Preparation method: under the condition of 65℃ and 1600r / min stirring, the base oil was added with anti-wear agent boronized thiophosphate ammonium salt, antioxidant liquid high molecular weight phenolic ester, extreme pressure agent sulfurized isobutylene prepared by normal pressure and high pressure process, metal deactivator benzene triazole derivative, antirust agent synthetic barium sulfonate, anti-emulsifier tetrapolyoxypropylene derivative, and dimethyl silicone oil mixture, stirred for 3h, and then stood for 3h, filtered, to obtain the low-carbon environment-friendly high-performance industrial gear oil.

[0068] Example 6

[0069] Compared with Example 3, the difference of the present example is that the same amount of acid phosphate amine salt is used to replace the boronized thiophosphate ammonium salt.

[0070] The preparation method is referred to Example 3.

[0071] Example 7

[0072] Compared with Example 3, the difference of the present example is that the same amount of sulfurized isobutylene prepared by normal pressure process is used to replace the sulfurized isobutylene prepared by normal pressure and high pressure process.

[0073] The preparation method is referred to Example 3.

[0074] Example 8

[0075] Compared with Example 3, the difference of the present example is that the same amount of thiadiazole derivative is used to replace the benzene triazole derivative.

[0076] The preparation method is referred to Example 3.

[0077] Example 9

[0078] Compared with Example 3, the difference of the present example is that the same amount of barium dinonylnaphthalene sulfonate is used to replace the synthetic barium sulfonate.

[0079] The preparation method is referred to Example 3.

[0080] Example 10

[0081] Compared with Example 3, the difference of the present example is that the same amount of polyoxyethylene-polyoxypropylene ether is used to replace the tetrapolyoxypropylene derivative.

[0082] The preparation method is referred to Example 3.

[0083] Comparative Example 1

[0084] Compared with Example 3, the difference of the present example is that the same amount of Lu'an 4# is used to replace the base oil.

[0085] The preparation method is referred to Example 3.

[0086] Comparative Example 2

[0087] The difference between the present comparative example and Example 3 is that the same amount of degradable polyol ester is used to replace poly-alpha olefin.

[0088] The preparation method is referred to Example 3.

[0089] Comparative Example 3

[0090] The difference between the present comparative example and Example 3 is that the same amount of T541 copper salt compound is used to replace 3,5-di(1,1-dimethylethyl)-4-hydroxy-C7-9-branched phenylpropionic acid alkyl ester.

[0091] The preparation method is referred to Example 3.

[0092] Performance test

[0093] The low-carbon environment-friendly high-performance industrial gear oil prepared from the examples and comparative examples is subjected to performance test, and the test items and test standards are shown in Table 1. The performance test results are shown in Table 2.

[0094] Table 1

[0095]

[0096]

[0097] Table 2

[0098]

[0099]

[0100] It can be known from the experimental data in Table 2 that the industrial gear oil prepared from the examples has good comprehensive performance, and can comprehensively improve the antioxidant performance, lubricating performance, biodegradability, corrosion and rust prevention, extreme pressure and wear resistance, emulsion resistance and other performances, and prolong the oil change period. Compared with Example 3, the gear oil prepared from Example 6 by using the same amount of acidic phosphate amine salt to replace the boronized thiophosphate ammonium salt cannot be transparent, and the corrosion resistance, foam performance, emulsion resistance and extreme pressure and wear resistance are decreased; the gear oil prepared from Example 7 by using the same amount of sulfurized isobutylene prepared by atmospheric pressure process to replace the sulfurized isobutylene prepared by atmospheric pressure and high pressure processes has decreased corrosion resistance, foam performance and extreme pressure and wear resistance; the gear oil prepared from Example 8 by using the same amount of thiadiazole derivative to replace benzotriazole derivative and the gear oil prepared from Example 10 by using the same amount of polyoxyethylene-oxypropylene ether to replace tetraoxopropylene derivative have decreased foam performance and emulsion resistance; the gear oil prepared from Example 9 by using the same amount of barium dinonylnaphthalene sulfonate to replace synthetic barium sulfonate has precipitate, and the foam performance and extreme pressure and wear resistance are poor.

[0101] Compared with Example 3, the base oil components of Comparative Example 1 are different, and only a single degradable polyol ester is selected as the base oil component in Comparative Example 2, so that the comprehensive properties of the industrial gear oil prepared finally, such as water separation, corrosion resistance, anti-foaming property, extreme pressure lubrication property and the like, are poor. Among them, the relative viscosity of the gear oil of Comparative Example 1 cannot meet the requirements of the standard; the 40℃ kinematic viscosity of the gear oil prepared in Comparative Example 2 is too low to meet the requirements of the product, and at the same time, due to the too small viscosity, the corresponding wear scar diameter, maximum no-seizure load and sintering load parameters cannot be measured. The antioxidant component selected in Comparative Example 3 is not suitable, so that the appearance, stability (foam property, anti-emulsification) and liquid phase rusting and the like of the industrial gear oil prepared are obviously poorer than those of Example 3.

[0102] The above examples only illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A low-carbon, environmentally friendly, high-performance industrial gear oil, characterized by, The components include the following by weight: base oil 90-105 parts, antioxidant 0.2-0.5 parts, anti-wear agent 0.2-0.5 parts, extreme pressure agent 0.4-0.8 parts, metal deactivator 0.1-0.2 parts, anti-rust agent 0.1-0.2 parts, anti-emulsifier 0.01-0.02 parts, anti-foaming agent 0.02-0.1 parts; The base oil includes degradable polyol ester 10-30 parts and poly-alpha olefin 60-90 parts; The kinematic viscosity at 40°C is 18-22 mm per 100 parts by weight of the degradable polyol ester 2 S, viscosity index > 140; The antioxidant is a liquid high molecular weight phenolic ester; The anti-wear agent is a boronized thiophosphoric acid amine salt; The extreme pressure agent is a sulfurized isobutylene prepared by normal pressure and high pressure processes.

2. The low carbon, environmentally friendly, high performance industrial gear oil as claimed in claim 1, wherein, The poly-alpha olefin is a combination of poly-alpha olefin-1 with a viscosity index of 130-160 and poly-alpha olefin-2 with a viscosity index of 180-200.

3. The low carbon, environmentally friendly, high performance industrial gear oil as claimed in claim 2, wherein, The mass ratio of poly-alpha olefin-1 and poly-alpha olefin-2 is (75-85):(15-25).

4. The low carbon, environmentally friendly, high performance industrial gear oil as claimed in claim 1, wherein, At least one of the following (1)-(4) is included: (1) The metal deactivator includes at least one of a thiadiazole derivative and a benzotriazole derivative; (2) The anti-rust agent includes at least one of synthetic barium sulfonate and barium dinonylnaphthalene sulfonate; (3) The anti-emulsifier includes at least one of tetrapropylene oxide derivative and ether; (4) The anti-foaming agent is at least one of dimethyl silicone oil, non-silicon type anti-foaming agent, and organically modified siloxane.

5. A method for preparing a low-carbon, environmentally friendly, high-performance industrial gear oil as described in any one of claims 1-4, characterized in that, The steps include mixing the raw materials, stirring, cooling and standing to obtain the low-carbon environmentally friendly high-performance industrial gear oil.

6. The preparation method according to claim 5, characterized in that, At least one of the following (1)-(3) is included: (1) The mixing temperature is 45-65°C; (2) The stirring speed is 1000-2000 r / min, and the stirring time is 2-3 h; (3) The standing time is 2-3 h.

7. Use of the low-carbon environmentally friendly high-performance industrial gear oil according to any one of claims 1-4 in the field of lubricating oil.

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