Environment-friendly multifunctional oil composition for agricultural machinery and preparation method of environment-friendly multifunctional oil composition

Abstract

The invention discloses an environment-friendly multifunctional oil composition for agricultural machinery and a preparation method of the environment-friendly multifunctional oil composition, and belongs to the field of oil for agricultural machinery. The lubricating oil is prepared from the following components in parts by mass: 3 to 5 parts of an extreme pressure anti-wear agent, 2 to 4 parts of an antioxidant, 0.1 to 2 parts of a preservative, 1 to 2 parts of a clearing agent, 0.1 to 3 parts of a dispersing agent, 0.1 to 2 parts of an anti-rust agent, 1 to 2 parts of a viscosity index improver, 0.1 to 0.5 part of an anti-foaming agent, 0.3 to 0.5 part of a pour point depressant and 79 to 92.3 parts of base oil, wherein the base oil is formed by combining rapeseed oil and synthetic ester base oil PALMESTER 2083; the preparation method comprises the following steps: sequentially adding the base oil, the anti-wear reagent at extreme pressure, the antioxidant, the preservative, the clearing agent, the dispersing agent, the viscosity index improver and the anti-foaming agent at the temperature of 50-70 DEG C according to the proportion, and mixing until the materials are completely dissolved to form a transparent precipitate-free solution. According to the multifunctional oil composition for the agricultural machinery, the influence on the environment is reduced, the wear resistance and the extreme pressure property are improved, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the field of oil for agricultural machinery, and in particular to an environmentally friendly multifunctional oil composition for agricultural machinery and a preparation method thereof. Background Art

[0002] The transmission system of agricultural machinery is a key component of modern agricultural mechanization production, and its performance and reliability directly affect the working efficiency and service life of agricultural machinery. UTTO (Universal Tractor Transmission Oil) is a comprehensive transmission oil specially designed for hydraulic transmission systems, wet brakes and hydraulic couplings of agricultural tractors and other agricultural machinery. The main function of UTTO transmission oil is to provide lubrication, cooling and protection for various transmission parts of agricultural machinery to ensure the efficient operation of the transmission system. It needs to have excellent anti-wear performance, extreme pressure performance, oxidation stability, low-temperature fluidity and anti-corrosion performance to meet the working requirements of agricultural machinery in harsh environments. With the continuous improvement of the level of agricultural mechanization, the performance requirements for UTTO transmission oil are also constantly increasing. Traditional mineral-based UTTO transmission oil can no longer meet the harsh working conditions of modern agricultural machinery such as high load, high temperature and long working cycle. Therefore, the development of a new type of UTTO agricultural machinery oil with better performance and environmental friendliness has become an important research goal in this field. The research and development focuses of the new UTTO agricultural machinery oil include: improving wear resistance and extreme pressure performance, extending service life; optimizing low-temperature fluidity to ensure low-temperature starting; enhancing oxidation stability and improving thermal stability; using environmentally friendly base oils and additives to reduce the impact on the environment, etc. Through the application of new materials and new processes, the development of high-performance UTTO agricultural machinery oil that meets the needs of modern agricultural machinery will help improve the working efficiency and service life of agricultural machinery and promote the process of agricultural modernization.

[0003] Agricultural machinery plays a vital role in modern agricultural production. The stability and efficiency of its transmission system directly affect the working performance and maintenance cost of the machinery. Traditional agricultural machinery transmission oils often cannot meet the lubrication needs of multiple components such as gears, bearings, clutches, etc., resulting in problems such as wear, high failure rate, and short maintenance cycle in the transmission system. In addition, with the improvement of environmental awareness, the development of environmentally friendly, efficient, and long-life transmission oils has become a trend in the industry.

[0004] After searching, there are related patents about UTTO agricultural machinery multifunctional transmission oil. For example, the Chinese patent application number is: 201711365195.X, the application publication date is: May 8, 2018, and the invention is: a hydraulic transmission dual-purpose oil and its preparation method. The composition in the application includes base oil, antioxidant, extreme pressure anti-wear agent and other additives, and synthesizes hydraulic and transmission dual-purpose oil with excellent high-temperature antioxidant performance and wide operating temperature. However, compared with agricultural machinery, the effect is not complete enough and it is not environmentally friendly.

[0005] For another example, the Chinese patent application number is: 202210302777.8, the application publication date is: June 28, 2022, and the invention is named: Multifunctional transmission oil composition, multifunctional transmission oil and its preparation method and application. The composition in the application comprises base oil, viscosity index improver, extreme pressure anti-wear agent, anti-emulsifier and other additives, and synthesizes a multifunctional transmission oil composition that can maintain good friction performance in the presence of water. However, the mechanical stability of this method is relatively general, the loss of the machine is increased, and it can cause certain pollution to the environment, which limits its use to a certain extent.

[0006] In view of the above problems, the present invention aims to design a multifunctional transmission oil for agricultural machinery with better and more comprehensive performance. The preparation cost is relatively low. Compared with other multifunctional transmission oils, it has the characteristics of strong antioxidant properties, excellent high and low temperature performance, and easy biodegradability. It not only conforms to the requirements for high and low temperature performance and meets the increasingly high development needs of the times, but also can be consistent with the environmentally friendly development concept. Summary of the invention

[0007] 1. Problem to be solved

[0008] The purpose of the present invention is to develop an environmentally friendly multifunctional oil composition for agricultural machinery with better performance and better environmental friendliness, and to provide a method for preparing the above-mentioned oil composition, so as to obtain a multifunctional oil composition for agricultural machinery having the following properties: reducing the impact on the environment while improving wear resistance and extreme pressure performance, extending service life; optimizing low-temperature fluidity to ensure low-temperature starting; enhancing oxidation stability and improving thermal stability; using environmentally friendly base oils and additives, etc.

[0009] 2. Technical solution

[0010] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0011] According to the purpose of the present invention, the first aspect of the present invention provides an environmentally friendly multifunctional oil composition for agricultural machinery, which is specially designed for environmental protection. Since there are few lubricating oil products specially made for UTTO agricultural machinery oil, the corresponding technical solutions are also rarely seen. The lubricating oil of the present invention includes the following components by mass:

[0012]

[0013] in:

[0014] The base oil is a combination of rapeseed oil and synthetic ester base oil PALMESTER 2083;

[0015] The extreme pressure anti-wear agent is a combination of sulfided isobutylene and ammonium phosphate;

[0016] The antioxidant was a combination of HOESC5135 and HOESC168 from Shanghai Yucheng Chemical Co., Ltd.;

[0017] The preservative is a combination of sodium benzoate and sodium dehydroacetate;

[0018] The detergent is succinimides;

[0019] The dispersant is a combination of succinimide and ashless phosphate;

[0020] The rust inhibitor is a combination of petroleum sulfonate and imidazoline;

[0021] The viscosity index improver is a combination of polymethacrylate T602HB and polyisobutylene;

[0022] The antifoaming agent is an acrylic compound antifoaming agent;

[0023] The pour point depressant is Evonik's VISCOPLEX 1-135.

[0024] When the above technical scheme is adopted, the component types and proportions of the lubricating oil are optimized and designed, thereby improving the extreme pressure and anti-wear properties of the UTTO agricultural machinery oil, optimizing the low-temperature fluidity, and enhancing the oxidation stability. The UTTO agricultural machinery oil of the present invention has comprehensive functions, excellent lubrication performance, environmentally friendly ingredients, and a simple production process, a short cycle, and low cost.

[0025] The present invention selects raw materials such as base oil and additives, and studies the ratio between components and the synergistic effect produced. On the basis of the lubricating oil being environmentally friendly, the low-temperature starting performance and extreme pressure anti-wear performance of the obtained lubricating oil can be improved, thereby promoting the widespread use of agricultural machinery in cold and complex working conditions in the north. At the same time, the lubricating oil of the present invention also has excellent comprehensive performance, thereby effectively meeting the use requirements of agricultural machinery.

[0026] Furthermore, the base oil accounts for the largest proportion in the composition, so the selection of the base oil is directly related to the preparation of the final environmentally friendly new UTTO agricultural machinery oil. The base oil of the present invention is a mixed natural lipid base oil, specifically a combination of rapeseed oil and synthetic ester base oil PALMESTER 2083, and the mixing mass ratio of rapeseed oil and synthetic ester base oil is (2-5):1. The selection and proportioning control of this component not only improves the biodegradability of the oil, but also reduces the pour point, which can reach -43°C, ensuring the fluidity of the oil in a low temperature environment and enhancing the startability of agricultural machinery at low temperatures.

[0027] Furthermore, in the extreme pressure anti-wear agent, the ammonium phosphate salt is preferably MAXEP3740 ammonium phosphate salt produced by Shanghai Yucheng Chemical Co., Ltd., and the mixing mass ratio of sulfided isobutylene and MAXEP3740 ammonium phosphate salt is (1-3): 1. By selecting and proportioning the components, the sulfide ions in the sulfided isobutylene component and the ammonium phosphate salt molecules in the MAXEP3740 ammonium phosphate salt component act synergistically, which can effectively reduce the wear of gears and bearings under heavy load conditions, reduce corrosion to non-ferrous metals, and at the same time improve cleanliness and high temperature resistance, enhance mechanical stability, and greatly increase the service life of agricultural machinery.

[0028] Furthermore, in the antioxidant, HOESC5135 is a high molecular weight phenol, HOESC168 is tris(di-tert-butylphenyl)phosphite, and the mixing mass ratio of HOESC5135 and HOESC168 is (0.1-2):(0.05-0.1). By selecting and designing the components and the proportion, the phenolic compounds in the HOESC5135 component and the phosphite in the HOESC168 component have a synergistic effect, preventing metal corrosion and polymer decomposition, thereby increasing the service life of the oil.

[0029] Furthermore, in the preservative, the optimal mixing mass ratio of sodium benzoate and sodium dehydroacetate is (1-3): 1. Through the selection and proportioning of the components, sodium benzoate and sodium dehydroacetate can produce the best synergistic effect. According to the difference in the action mechanism of the two, the physiological activities of microorganisms can be interfered with from different angles during the preservation process. Sodium benzoate has a better inhibitory effect on bacteria, and sodium dehydroacetate has a particularly strong antibacterial ability against molds and yeasts. When used in combination, they can more effectively inhibit the growth and reproduction of microorganisms and enhance the overall preservation effect.

[0030] Furthermore, impurities will be generated during the use of oil, thereby increasing the load on the machine. Therefore, the detergent added in the present invention is a type of succinic acid imide. The addition of the detergent can prevent the generation of sediment when the oil is used, ensure cleanliness, maintain normal heat dissipation and lubrication, effectively reduce component wear, and extend service life.

[0031] Furthermore, in the dispersant, the mixing mass ratio of succinimide and ashless phosphate is (1-2):2. Through the selection and proportioning of the components, the two produce a synergistic effect. Succinimide disperses particles that may cause wear, allowing ashless phosphate to form a film on the metal surface better; and the protective film formed by ashless phosphate can provide a more stable adsorption environment for succinimide, reducing its desorption due to factors such as friction, thereby jointly improving lubrication performance. At the same time, in terms of anti-oxidation, succinimide itself has certain anti-oxidation properties, and ashless phosphate can also capture free radicals in the oxidation process. They cooperate with each other to enhance the ability of the entire system to inhibit oxidation reactions and extend the service life.

[0032] Furthermore, in the rust inhibitor, the mixing mass ratio of petroleum sulfonate and imidazoline is (1-3): 1. By selecting and proportioning the components, when the two are used simultaneously, the protective film formed by the petroleum sulfonate can provide a more stable adsorption basis for imidazoline, and the chemical adsorption and reaction process of imidazoline can enhance the anti-rust performance of the protective film, and jointly resist metal rust.

[0033] Furthermore, in the viscosity index improver, the mixing mass ratio of polymethacrylate T602HB and polyisobutylene is (1-5):1. The design is carried out through the selection and proportioning of the components. When the two are used at the same time, the lubricating oil can maintain a stable viscosity in a wider temperature range, and the lubricating oil can have good lubricity in both high and low temperature environments.

[0034] Furthermore, the anti-foaming agent adopts an acrylic compound anti-foaming agent, preferably the acrylic compound anti-foaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd. Considering that mechanical equipment will inevitably produce bubbles during the use of oil products, if these bubbles cannot be eliminated in time, the cooling effect of the lubricating oil will be reduced, the supply will be insufficient, and the wear of the equipment will be increased, so the anti-foaming agent is added to the oil in advance.

[0035] Furthermore, the pour point depressant is Evonik's pour point depressant VISCOPLEX 1-135, which has good low-temperature fluidity even in the northern weather of -30°C. Considering that some impurities will be generated during the long-term use of agricultural machinery, the generation of impurities will affect the low-temperature fluidity of the oil, thereby affecting the service life of the oil. Therefore, the addition of the pour point depressant will not only enhance the low-temperature fluidity of the oil, but also increase the service life of the oil.

[0036] According to the purpose of the present invention, the second aspect of the present invention provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, wherein base oil, extreme pressure anti-wear agent, antioxidant, preservative, detergent, dispersant, viscosity index improver, and anti-foaming agent are sequentially added and mixed at a temperature of 50-70° C. in proportion until completely dissolved to form a transparent solution without precipitation;

[0037] The specific steps include:

[0038] Step 1: Add rapeseed oil and synthetic ester base oil PALMESTER 2083 mixed base oil into a kettle in a ratio of (2-5):1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2h.

[0039] Step 2: After the reaction of step 1, add 3.5% to 7% of the base oil mass of adsorbent and reduce the temperature to 30-50°C, add 2% to 5% of the base oil mass of dehydration filter aid, react for 2 hours, and filter the obtained base oil into the blending tank through a plate filter.

[0040] Step 3: Heat the base oil to 40-50° C., and add isobutylene sulfide and ammonium phosphate respectively, that is, first add isobutylene sulfide and stir pulse for 30 minutes, then add ammonium phosphate and stir pulse for 1 hour, or first add ammonium phosphate and stir pulse for 30 minutes, then add isobutylene sulfide and stir pulse for 1 hour.

[0041] Step 4: After the reaction is completed, the temperature is lowered to 60-80 degrees Celsius, and then antioxidants, preservatives, detergents, dispersants, rust inhibitors, viscosity index improvers, antifoaming agents, and pour point depressants are added in sequence for mixed pulse stirring for 4 hours, and then a new UTTO agricultural machinery oil can be obtained.

[0042] 3. Beneficial effects

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] (1) The biodegradability of the environmentally friendly multifunctional oil composition for agricultural machinery of the present invention can reach more than 80%, which greatly reduces the pollution of oil products to the environment. At present, the lubricating oils used for agricultural machinery and equipment are mostly blended with refined mineral oils. Most of these oils have single properties and are difficult to biodegrade, which causes great damage to the environment. The present invention is aimed at agricultural machinery and equipment, and the future development trend. According to the characteristics and combined with environmental protection, a new UTTO transmission oil with a multifunctional coefficient and biodegradability is designed with a long-term vision.

[0045] (2) The environmentally friendly multifunctional oil composition for agricultural machinery of the present invention has the functions of hydraulic pressure, braking and transmission, and can ensure that the oil product starts at -30°C, that is, it has good low-temperature fluidity and low-temperature starting performance. The comprehensive performance mainly has the following effects:

[0046] ①Excellent heat dissipation performance. Ensure that the viscosity of the oil at 100°C is not too high, maintain the fluidity of the oil at high temperature, and accelerate heat dissipation.

[0047] ② Excellent extreme pressure and anti-wear properties. By combining the base oil with the selection and proportion of the extreme pressure and anti-wear agent compound, the anti-wear performance of the transmission system under heavy load conditions is significantly improved, and the service life of the components is extended.

[0048] ③Excellent antioxidant performance. The present invention adopts multiple antioxidants to solve the antioxidant problem in multiple ways. Combined with the characteristics of the base oil, the phenolic compounds and phosphites in the antioxidants act synergistically to enhance the antioxidant performance of the oil. Prevent high-temperature oxidation, metal corrosion, polymer decomposition, and thus increase the service life of the oil.

[0049] ④Excellent cleaning performance. The addition of detergent can effectively reduce the wear of components and extend the service life of oil during use.

[0050] ⑤ Excellent dispersibility. The present invention adopts a mixture of multiple dispersants to solve the sediment particles in multiple ways, so that they remain suspended and dispersed, and prevent them from agglomerating and accumulating on the surface. It effectively avoids the problems of increased wear of components and reduced transmission efficiency caused by sediment accumulation.

[0051] ⑥ Excellent high temperature performance. The present invention makes the oil product of the present invention have excellent high temperature performance by proportioning the base oil.

[0052] ⑦ Good oil compatibility. The transmission oil provided by the present invention can simultaneously meet the lubrication requirements of various parts such as gears, bearings, clutches, etc. in agricultural machinery, reduce the types of oils, and simplify maintenance work.

[0053] ⑧Good antiseptic performance. The mixed ratio of multiple preservatives used in the present invention expands the antibacterial range and covers more types of microorganisms. At the same time, based on the complementary mechanism of action, it more effectively inhibits the growth and reproduction of microorganisms and enhances the overall antiseptic effect.

[0054] ⑨The addition of antioxidants and preservatives makes the oil have a longer service life, reduces the frequency of oil changes and reduces maintenance costs. DETAILED DESCRIPTION

[0055] The present invention is further described below in conjunction with specific embodiments.

[0056] Example 1

[0057] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0058] Step 1: Take 85.5 parts of base oil, wherein rapeseed oil and synthetic ester base oil PALMESTER 2083 are respectively put into a kettle in a mass ratio of 2:1, stirred and vacuumed, and the temperature is raised to 60-80°C for reaction for 2h.

[0059] Step 2: After the reaction in step 1 is completed, add 3.5% to 7% of adsorbent (industrial grade activated clay) and lower the temperature to 30 to 50°C, add 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) and react for 2 hours before filtering the obtained base oil through a plate filter into a blending tank. The kinematic viscosity of the base oil at 100°C is 10.76mm 2 / s.

[0060] Step 3: The base oil in step 2 is heated to 40-50°C, and 5 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of isobutylene sulfide to ammonium phosphate is 1:1, that is, isobutylene sulfide is first added and stirred in pulses for 30 minutes, and then ammonium phosphate is added and stirred in pulses for 1 hour.

[0061] Step 4: Add 3 parts of antioxidant, 2 parts of preservative, 1.5 parts of detergent, 1.5 parts of dispersant, 0.1 parts of rust inhibitor, 1 part of viscosity index improver, 0.2 parts of antifoaming agent, and 0.3 parts of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 0.1:0.05, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 1:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1:2; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 1:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 1:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0062] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0063] Example 2

[0064] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0065] Step 1: Take 81 parts of base oil, wherein rapeseed oil and synthetic ester base oil PALMESTER 2083 are respectively put into a kettle in a mass ratio of 3:1, stirred and vacuumed, and the temperature is raised to 60-80°C for reaction for 2 hours.

[0066] Step 2: After the reaction in step 1 is completed, add 3.5% to 7% of adsorbent (industrial grade activated clay) and lower the temperature to 30 to 50°C, add 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) and react for 2 hours before filtering the obtained base oil through a plate filter into a blending tank. The kinematic viscosity of the base oil at 100°C is 10.76mm 2 / s.

[0067] Step 3: The base oil in step 2 is heated to 40-50°C, and 3 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of sulfided isobutylene to ammonium phosphate is 1:1, that is, ammonium phosphate is first added and stirred in pulses for 30 minutes, and then sulfided isobutylene is added and stirred in pulses for 1 hour.

[0068] Step 4: Add 3 parts of antioxidant, 2 parts of preservative, 2 parts of detergent, 3 parts of dispersant, 0.2 parts of rust inhibitor, 2 parts of viscosity index improver, 0.2 parts of antifoaming agent, and 0.4 parts of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 1:1, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 2:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1.2:2; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 1.5:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 2:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0069] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0070] Example 3

[0071] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0072] Step 1: Take 90 parts of base oil, put rapeseed oil and synthetic ester base oil PALMESTER 2083 into the kettle in a ratio of 4:1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2 hours.

[0073] Step 2: After the reaction in step 1 is completed, add 3.5% to 7% of adsorbent (industrial grade activated clay) and lower the temperature to 30 to 50°C, add 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) and react for 2 hours before filtering the obtained base oil through a plate filter into a blending tank. The kinematic viscosity of the base oil at 100°C is 10.76mm 2 / s.

[0074] Step 3: The base oil in step 2 is heated to 40-50°C, and 3.5 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of isobutylene sulfide to ammonium phosphate is 2:1, that is, isobutylene sulfide is first added and stirred in pulses for 30 minutes, and then ammonium phosphate is added and stirred in pulses for 1 hour.

[0075] Step 4: Add 2 parts of antioxidant, 1 part of preservative, 1.5 parts of detergent, 1.5 parts of dispersant, 0.5 parts of rust inhibitor, 1 part of viscosity index improver, 0.2 parts of antifoaming agent, and 0.3 parts of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 2:0.05, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 3:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1:1; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 3:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 5:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0076] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0077] Example 4

[0078] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0079] Step 1: Take 87 parts of base oil, put rapeseed oil and synthetic ester base oil PALMESTER 2083 into the kettle in a ratio of 4:1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2 hours.

[0080] Step 2: After the reaction in step 1 is completed, add 3.5% to 7% of adsorbent (industrial grade activated clay) and lower the temperature to 30 to 50°C, add 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) and react for 2 hours before filtering the obtained base oil through a plate filter into a blending tank. The kinematic viscosity of the base oil at 100°C is 10.76mm 2 / s.

[0081] Step 3: The base oil in step 2 is heated to 40-50°C, and 5 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of isobutylene sulfide to ammonium phosphate is 2:1, that is, isobutylene sulfide is first added and stirred in pulses for 30 minutes, and then ammonium phosphate is added and stirred in pulses for 1 hour.

[0082] Step 4: Add 2 parts of antioxidant, 0.1 parts of preservative, 1 part of detergent, 0.1 parts of dispersant, 1 part of rust inhibitor, 2 parts of viscosity index improver, 0.2 parts of antifoaming agent, and 0.5 parts of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 20:1, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 1.5:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1.5:2; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 1.5:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 5:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0083] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0084] Example 5

[0085] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0086] Step 1: Take 92.3 parts of base oil, wherein rapeseed oil and synthetic ester base oil PALMESTER 2083 are respectively put into a kettle in a ratio of 5:1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2 hours.

[0087] Step 2: After the reaction in step 1 is completed, add 3.5% to 7% of adsorbent (industrial grade activated clay) and lower the temperature to 30 to 50°C, add 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) and react for 2 hours before filtering the obtained base oil through a plate filter into a blending tank. The kinematic viscosity of the base oil at 100°C is 10.76mm 2 / s.

[0088] Step 3: The base oil in step 2 is heated to 40-50°C, and 4.5 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of isobutylene sulfide to ammonium phosphate is 1:1, that is, isobutylene sulfide is first added and stirred in pulses for 30 minutes, and then ammonium phosphate is added and stirred in pulses for 1 hour.

[0089] Step 4: Add 4 parts of antioxidant, 1.3 parts of preservative, 1 part of detergent, 1 part of dispersant, 2 parts of rust inhibitor, 1 part of viscosity index improver, 0.1 part of antifoaming agent, and 0.3 part of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 0.1:0.05, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 1:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1:2; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 1:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 1:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0090] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0091] Example 6

[0092] This embodiment provides a method for preparing an environmentally friendly multifunctional oil composition for agricultural machinery, comprising the following steps:

[0093] Step 1: Take 79 parts of base oil, put rapeseed oil and synthetic ester base oil PALMESTER 2083 into the kettle in a ratio of 3:1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2 hours.

[0094] Step 2: After the reaction in step 1 is completed, 3.5% to 7% of adsorbent (industrial grade activated clay) is added and the temperature is lowered to 30 to 50°C, and 2% to 5% of dehydration filter aid (500 mesh diatomaceous earth, Shanghai Shanpu Chemical Co., Ltd.) is added. After reacting for 2 hours, the obtained base oil is filtered into the blending tank through a plate filter. The kinematic viscosity of the base oil at 100°C is 10.76 mm2 / s.

[0095] Step 3: The base oil in step 2 is heated to 40-50°C, and 7 parts of extreme pressure anti-wear agent are added, wherein the mass ratio of isobutylene sulfide to ammonium phosphate is 1:1, that is, isobutylene sulfide is first added and stirred in pulses for 30 minutes, and then ammonium phosphate is added and stirred in pulses for 1 hour.

[0096] Step 4: Add 4 parts of antioxidant, 2 parts of preservative, 2 parts of detergent, 2 parts of dispersant, 2 parts of rust inhibitor, 1 part of viscosity index improver, 0.5 parts of antifoaming agent, and 0.3 parts of pour point depressant, wherein the mass ratio of HOESC5135 and HOESC168 of Shanghai Yucheng Chemical Co., Ltd. in the antioxidant is 0.1:0.05, the mass ratio of sodium benzoate and sodium dehydroacetate in the preservative is 1:1, and the detergent is succinimides; the mass ratio of succinimide and ashless phosphate in the dispersant is 1:2; the mass ratio of petroleum sulfonate and imidazoline in the rust inhibitor is 1:1; the mass ratio of polymethacrylate T602HB and polyisobutylene in the viscosity index improver is 1:1; the antifoaming agent is the acrylic compound antifoaming agent OA-300 of Shanghai Yucheng Chemical Co., Ltd.; the pour point depressant is Evonik pour point depressant VISCOPLEX 1-135;

[0097] The temperature was raised to 60° C. and pulse stirred for 4 hours to obtain the environmentally friendly multifunctional oil composition for agricultural machinery of this embodiment. The obtained multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 1.

[0098] Comparative Example 1

[0099] The preparation method of an environmentally friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, and the difference between the comparative example and Example 1 is that a single sodium benzoate is selected as the preservative.

[0100] The obtained environmentally friendly multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 2.

[0101] Comparative Example 2

[0102] The preparation method of the environmentally friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, except that the antioxidant selected is BHT, i.e., 2,6-di-tert-butyl-p-cresol, a common phenolic antioxidant.

[0103] The obtained environmentally friendly multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 2.

[0104] Comparative Example 3

[0105] The preparation method of the environment-friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, and the difference between this comparative example and Example 1 is that the extreme pressure anti-wear agent is zinc dialkyl thiophosphate.

[0106] The obtained environmentally friendly multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 2.

[0107] Comparative Example 4

[0108] The preparation method of the environmentally friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, except that the base oil is all rapeseed oil, which has very poor low temperature performance and a maximum pour point of -27°C. The low temperature apparent viscosity of -35°C cannot be detected because the oil has solidified. The obtained environmentally friendly multifunctional oil composition for agricultural machinery is tested, and the test results are shown in Table 2.

[0109] Comparative Example 5

[0110] The preparation method of the environmentally friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, except that the base oil is all synthetic ester base oil PALMESTER 2083, which has a low viscosity and is relatively expensive, and has poor copper sheet corrosion ability and low anti-wear performance after reacting with various additives. The obtained environmentally friendly multifunctional oil composition for agricultural machinery was tested, and the test results are shown in Table 2.

[0111] Comparative Example 6

[0112] The preparation method of the environmentally friendly multifunctional oil composition for agricultural machinery in this comparative example is basically the same as that in Example 1, and the difference between it and Example 1 is that when the mass ratio of rapeseed oil to synthetic ester base PALMESTER 2083 in the base oil reaches 6:1, the pour point of the lubricating oil product is low, the low temperature performance is reduced, and the apparent viscosity at -35°C is unqualified. The obtained environmentally friendly multifunctional oil composition for agricultural machinery is tested, and the test results are shown in Table 2.

[0113] Table 1 Performance test results of the oil compositions obtained in Examples 1 to 6

[0114]

[0115] From the performance test indicators of Examples 1 to 6 in Table 1, it can be seen that the UTTO agricultural machinery oil of the present invention has good low-temperature pumpability, extreme pressure anti-wear, high temperature resistance, anti-oxidation, anti-rust and anti-corrosion properties. In addition, the main raw material selected by the present invention is biodegradable vegetable oil, which has extremely high biodegradability and is an environmentally friendly lubricant product.

[0116] Table 2 Performance test results of the oil compositions obtained in Comparative Examples 1 to 6

[0117]

[0118] Combining the data in Table 1 and Table 2, it can be seen that compared with Example 1, after the anti-corrosion composite agent is replaced with a single sodium benzoate, the anti-corrosion, anti-wear, anti-rust and anti-oxidation properties of Comparative Examples 1 to 3 are all reduced.

[0119] Comparative Example 2 Compared with Example 1, after the antioxidant of the present invention is replaced by the antioxidant BHT, the anti-wear, anti-rust and anti-oxidation properties of the lubricating oil are reduced.

[0120] Comparative Example 3 is compared with Example 1. After the extreme pressure anti-wear agent of the present invention is replaced, not only the anti-wear performance is reduced, but also the low temperature performance is reduced. Therefore, by comparing Comparative Examples 1 to 3 with Example 1, it is proved that the type and proportion of the additives of the present invention are most suitable, and the performance of the prepared lubricating oil is more excellent.

[0121] The UTTO agricultural machinery oil provided by the present invention has the advantages of excellent anti-wear performance, environmental protection and energy saving, long life, etc. It can significantly improve the overall performance and service life of the agricultural machinery transmission system, reduce maintenance costs, and has broad application prospects and market value.

[0122] The present invention has been described in detail above in conjunction with specific exemplary embodiments. However, it should be understood that various modifications and variations may be made without departing from the scope of the present invention as defined by the appended claims. The detailed description should be considered only as illustrative, not restrictive, and any such modifications and variations, if any, will fall within the scope of the present invention described herein. In addition, the background art is intended to illustrate the current status and significance of the research and development of the present technology and is not intended to limit the present invention or the application field of the present application and the present invention.

[0123] More specifically, although exemplary embodiments of the present invention have been described herein, the present invention is not limited to these embodiments, but includes any and all embodiments that are recognizable by those skilled in the art based on the foregoing detailed description, such as combinations between the various embodiments, adaptive changes and / or replacements. The limitations in the claims may be interpreted broadly based on the language used in the claims and are not limited to the examples described in the foregoing detailed description or during the implementation of the application, which examples should be considered non-exclusive. Any steps listed in any method or process claim may be performed in any order and are not limited to the order presented in the claim. Therefore, the scope of the present invention should be determined solely by the attached claims and their legal equivalents, rather than by the description and examples given above.

[0124] Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. When there is a conflict, the definition in this specification sheet shall prevail. When rate, pressure, temperature, time or other values ​​or parameters are expressed as ranges, preferred ranges, or a series of upper preferred values ​​and lower preferred values, this should be understood to specifically disclose all ranges formed by any pairing of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether the range is disclosed separately. For example, a range of 1-50 is understood to include any number, combination of numbers, or subrange selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, and all decimal values ​​between the above integers, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to subranges, "nested subranges" extending from any endpoint within the range are specifically contemplated. For example, nested sub-ranges of the exemplary range 1-50 may include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in the other direction.

Claims

1. An environmentally friendly multifunctional oil composition for agricultural machinery, characterized in that: The composition includes the following components in parts by weight: in: The base oil is a combination of rapeseed oil and synthetic ester base oil PALMESTER 2083; The extreme pressure anti-wear agent is a combination of sulfided isobutylene and ammonium phosphate; The antioxidant was a combination of HOESC5135 and HOESC168 from Shanghai Yucheng Chemical Co., Ltd.; The preservative is a combination of sodium benzoate and sodium dehydroacetate; The detergent is succinimides; The dispersant is a combination of succinimide and ashless phosphate; The rust inhibitor is a combination of petroleum sulfonate and imidazoline; The viscosity index improver is a combination of polymethacrylate T602HB and polyisobutylene; The antifoaming agent is an acrylic compound antifoaming agent; The pour point depressant is Evonik's VISCOPLEX 1-135.

2. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the rapeseed oil to the synthetic ester base oil PALMESTER 2083 is (2-5):

1.

3. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the isobutylene sulfide to the ammonium phosphate salt is (1-3):

1.

4. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of HOESC5135 to HOESC168 is (0.1-2):(0.05-0.1).

5. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the sodium benzoate to the sodium dehydroacetate is (1-3):

1.

6. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the succinimide to the ash-free phosphate is (1-2):

2.

7. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the petroleum sulfonate to imidazoline is (1-3):

1.

8. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The mass ratio of the polymethacrylate T602HB to polyisobutylene is (1-5):

1.

9. The environmentally friendly multifunctional oil composition for agricultural machinery according to claim 1, characterized in that: The acrylic acid resin compound antifoaming agent is the acrylic acid resin compound antifoaming agent OA-300 produced by Shanghai Yucheng Chemical Co., Ltd.

10. An environmentally friendly multifunctional oil composition for agricultural machinery, characterized in that: The steps are: Step 1: Add rapeseed oil and synthetic ester base oil PALMESTER 2083 mixed base oil into a kettle in a ratio of (2-5):1, stir and evacuate, and raise the temperature to 60-80°C for reaction for 2h; Step 2: After the reaction of step 1 is completed, add 3.5% to 7% of the base oil mass of adsorbent and reduce the temperature to 30 to 50°C, add 2% to 5% of the base oil mass of dehydration filter aid, react for 2 hours, and filter the obtained base oil into a blending tank through a plate filter; Step 3: Heat the base oil in step 2 to 40-50° C., add isobutylene sulfide and ammonium phosphate respectively and stir; Step 4: After the reaction is completed, the temperature is lowered to 60-80°C, and then antioxidants, preservatives, detergents, dispersants, rust inhibitors, viscosity index improvers, antifoaming agents, and pour point depressants are added in sequence and mixed by pulse stirring for 4 hours to obtain an environmentally friendly multifunctional oil composition for agricultural machinery.

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