High-adhesion port machine lubricating grease and preparation method thereof

Abstract

The invention discloses high-adhesion port machine lubricating grease and a preparation method thereof, and relates to the technical field of lubricating material preparation and application, the high-adhesion port machine lubricating grease is prepared from the following components by weight: 60-80 parts of base oil, 3-5 parts of a functional copolymer, 0.1-0.6 part of Meso-tetramethyl-meso-tetra (p-aminophenyl) calix [4] pyrrole, 0.1-0.6 part of 1, 2, 4-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1 The lubricating oil comprises the following components in parts by weight: 0.3-0.5 part of 1, 3-diaminothiourea, 3-5 parts of molybdenum sulfide nanosheets, 0.5-1 part of an antirust agent, 0.1-1 part of a dispersing agent, 2-4 parts of an antioxidant and 0.3-0.6 part of modified rosin. The functional copolymer comprises a structural unit introduced by the following monomers: bis (trimethylsilylated) vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide and vinyl boronic acid pinacol ester. The lubricating grease is high in adhesive force and excellent in extreme pressure wear resistance, salt mist resistance and damp heat resistance.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating material preparation and application, and in particular to a high-adhesion port machinery lubricating grease and a preparation method thereof. Background Art

[0002] Lubrication management of port machinery is an important part of port machinery equipment management, one of the main contents to improve and consolidate the good condition of port machinery equipment, and an indispensable link in the port production process. While modern equipment achieves high productivity, the wear of parts is also considerable. Good equipment lubrication can ensure the normal operation of port machinery equipment, prevent accidents, extend the service life of equipment, and reduce energy consumption. Lubrication management of port machinery is inseparable from the use of lubricants. Lubricants with good comprehensive performance and performance stability directly affect energy utilization and equipment service life. Therefore, it is particularly important to develop high-performance industrial lubricants.

[0003] Traditional industrial lubricants generally have poor adhesion, and worn metal substances are easily mixed in the lubricants, so the lubricants need to be replaced in a short period of time. Industrial lubricants on the market also have more or less technical defects such as extreme pressure anti-wear performance, salt spray resistance and wet heat performance still need to be further improved.

[0004] In order to solve the above problems, a Chinese invention patent with authorization announcement number CN108165354B discloses a lubricating oil grease and a processing method thereof, which is composed of the following raw materials in parts by weight: 20-30 parts of base oil component A, 20-30 parts of base oil component B, 3-5 parts of antioxidant, 2-4 parts of anticorrosive agent, 1-3 parts of extreme pressure antiwear agent, and 1-3 parts of stabilizer; first, determine the viscosity of the base oil, and configure the adjusted base oil according to the base oil components; mix the antioxidant, anticorrosive agent, extreme pressure antiwear agent and stabilizer in a reactor according to the proportion, and obtain the additive after heating and stirring; transfer the above base oil to a mixing chamber and heat it to 80-100°C, and after heating to a specified temperature, mix the additive with it, and stir it by ultrasonic vibration until there is no stratification; cool the above mixed substance to 50-60°C, and perform negative pressure degassing in the mixing chamber; the invention can accurately grasp the viscosity and proportion of the base oil and additive, and can mix them evenly during the mixing process to reduce the possibility of incompatibility. However, the extreme pressure, anti-wear, salt spray and moisture-heat performance of this grease still needs to be further improved.

[0005] It can be seen that the development of a high-adhesion port machinery lubricating grease with high adhesion, excellent extreme pressure anti-wear performance, salt spray resistance and wet heat resistance and its preparation method meets market demand, has broad market value and application prospects, and is of great significance to promoting the development of the lubricating grease field. Summary of the invention

[0006] The main purpose of the present invention is to provide a high-adhesion port machinery lubricating grease with high adhesion, excellent extreme pressure anti-wear performance, salt spray resistance and wet heat performance and a preparation method thereof.

[0007] To achieve the above purpose, the present invention provides a high-adhesion port machinery lubricating grease, which comprises the following components in parts by weight: 60-80 parts of base oil, 3-5 parts of functional copolymer, 0.1-0.6 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.3-0.5 parts of 1,3-diaminothiourea, 3-5 parts of molybdenum sulfide nanosheets, 0.5-1 parts of rust inhibitor, 0.1-1 parts of dispersant, 2-4 parts of antioxidant, and 0.3-0.6 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester.

[0008] Preferably, the base oil is DowSyn PAO10.

[0009] Preferably, the preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester and an initiator to a high boiling point solvent, stirring and reacting at 60-70° C. in an inert gas atmosphere for 3-5 hours, then precipitating in water, washing the precipitated polymer with ethanol for 3-6 times, and finally drying in a vacuum drying oven at 85-95° C. to constant weight to obtain a functional copolymer.

[0010] Preferably, the mass ratio of the bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, vinylboronic acid pinacol ester, initiator, and high boiling point solvent is 1:(0.8-1.2):(1-2):(0.5-0.8):(0.04-0.06):(15-20).

[0011] Preferably, the initiator is azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone; and the inert gas is any one of nitrogen, helium, neon, and argon.

[0012] Preferably, the preparation method of the meso-tetramethyl-meso-tetraaminophenylcalix[4]pyrrole is described in: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenylcalix[4]pyrrole [J]. Chemical Reagents, 2002(6):344-345.

[0013] Preferably, the molybdenum sulfide nanosheets have a diameter of 200-500 nm and a thickness of 5-10 nm, and are provided by Xi'an Qiyue Biotechnology Co., Ltd.

[0014] Preferably, the rust inhibitor is at least one of benzotriazole, lanolin magnesium soap and barium petroleum sulfonate.

[0015] Preferably, the dispersant is lubricating oil dispersant T154.

[0016] Preferably, the antioxidant is any one of 2,6-di-tert-butyl-4-nonylphenol, 2,6-di-tert-butyl-p-cresol or 2,4,6-tri-tert-butylphenol.

[0017] Preferably, the modified rosin is KOMOTAC® H120K modified rosin resin.

[0018] Another object of the present invention is to provide a method for preparing the high-adhesion port machinery lubricating grease, comprising the following steps: after uniformly mixing the components by weight, stirring for 22-32 minutes at a temperature of 90-110°C and a pressure of 0.1MPa, cooling to 45-55°C, and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease.

[0019] Preferably, the vacuum degree of the negative pressure degassing is 0.03-0.07 MPa.

[0020] Due to the application of the above technical solution, the present invention has the following beneficial effects: (1) The method for preparing the high-adhesion port machinery lubricating grease disclosed in the present invention has simple process, convenient operation and control, high preparation efficiency and finished product qualification rate, low dependence on equipment, low energy consumption, suitable for continuous large-scale production, and has high promotion and application value.

[0021] (2) The high-adhesion port machinery lubricating grease disclosed in the present invention comprises the following components in parts by weight: 60-80 parts of base oil, 3-5 parts of functional copolymer, 0.1-0.6 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.3-0.5 parts of 1,3-thiodiaminourea, 3-5 parts of molybdenum sulfide nanosheets, 0.5-1 parts of rust inhibitor, 0.1-1 parts of dispersant, 2-4 parts of antioxidant, and 0.3-0.6 parts of modified rosin. Through the mutual coordination and joint action of the components, the lubricating grease has high adhesion, and is excellent in extreme pressure anti-wear performance, salt spray resistance and wet heat resistance.

[0022] (3) The high-adhesion port machinery lubricating grease disclosed in the present invention comprises a functional copolymer comprising structural units introduced from the following monomers: bis(trimethylsilylated vinyl phosphate), 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, and vinyl boric acid pinacol ester. At the same time, trimethylsilylated phosphate, thiazole, cyano, trifluoromethylphenyl, amide and boric acid pinacol ester structures are introduced. These structures are linked together by covalent bonds. Under the multiple effects of electronic effect, steric effect and conjugation effect, the product can be endowed with excellent extreme pressure and anti-wear properties. At the same time, in combination with other components in the lubricating grease, the adhesion, salt spray resistance and wet heat resistance can be improved. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Example 1: A high-adhesion port machinery lubricating grease comprises the following components in parts by weight: 80 parts of base oil, 3 parts of functional copolymer, 0.1 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.3 parts of 1,3-diaminothiourea, 3 parts of molybdenum sulfide nanosheets, 0.5 parts of rust inhibitor, 0.1 parts of dispersant, 2 parts of antioxidant, and 0.3 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester; the base oil is DowSyn PAO10.

[0025] The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester, and an initiator to a high boiling point solvent, stirring and reacting for 3 hours at 60° C. in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 3 times, and finally drying to constant weight in a vacuum drying oven at 85° C. to obtain a functional copolymer; the mass ratio of bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester, initiator, and high boiling point solvent is 1:0.8:1:0.5:0.04:15; the initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; and the inert gas is nitrogen. The M of the functional copolymer is measured by GPC test. n =15460g / mol,M W / M n=1.437; through elemental analysis and weight change calculation, the mass ratio of the structural units introduced by bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester in the functional copolymer is 0.99:0.78:1:0.49.

[0026] The preparation method of the Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole is described in: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole [J]. Chemical Reagents, 2002 (6): 344-345; the diameter of the molybdenum sulfide nanosheets is 200-500nm and the thickness is 5-10nm, which is provided by Xi'an Qiyue Biotechnology Co., Ltd.; the rust inhibitor is benzotriazole; the dispersant is lubricating oil dispersant T154; the antioxidant is 2,6-di-tert-butyl-4-nonylphenol; and the modified rosin is KOMOTAC® H120K modified rosin resin.

[0027] The preparation method of the high-adhesion port machinery lubricating grease comprises the following steps: after uniformly mixing the components by weight, stirring for 22 minutes at a temperature of 90°C and a pressure of 0.1MPa, cooling to 45°C, and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease; the vacuum degree of the negative pressure degassing is 0.03MPa.

[0028] Example 2: A high-adhesion port machinery lubricating grease comprises the following components in parts by weight: 75 parts of base oil, 3.5 parts of functional copolymer, 0.2 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.35 parts of 1,3-diaminothiourea, 3.5 parts of molybdenum sulfide nanosheets, 0.6 parts of rust inhibitor, 0.3 parts of dispersant, 2.5 parts of antioxidant, and 0.4 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilylated vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester; the base oil is DowSyn PAO10.

[0029] The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, vinylboronic acid pinacol ester and an initiator to a high boiling point solvent, stirring and reacting for 3.5 hours at 63°C in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 4 times, and finally drying in a vacuum drying oven at 87°C to constant weight to obtain the functional copolymer; the mass ratio of bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, vinylboronic acid pinacol ester, initiator and high boiling point solvent is 1:0.9:1.3:0.6:0.045:17; the initiator is azobisisobutyronitrile; the high boiling point solvent is N,N-dimethylformamide; and the inert gas is helium.

[0030] The preparation method of the Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole is described in: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole [J]. Chemical Reagents, 2002 (6): 344-345; the diameter of the molybdenum sulfide nanosheets is 200-500nm and the thickness is 5-10nm, which is provided by Xi'an Qiyue Biotechnology Co., Ltd.; the rust inhibitor is lanolin magnesium soap; the dispersant is lubricating oil dispersant T154; the antioxidant is 2,6-di-tert-butyl-p-cresol; and the modified rosin is KOMOTAC® H120K modified rosin resin.

[0031] A method for preparing the high-adhesion port machinery lubricating grease comprises the following steps: after uniformly mixing the components by weight, stirring for 24 minutes at a temperature of 95° C. and a pressure of 0.1 MPa, cooling to 47° C., and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease; the vacuum degree of the negative pressure degassing is 0.04 MPa.

[0032] Example 3: A high-adhesion port machinery lubricating grease comprises the following components in parts by weight: 70 parts of base oil, 4 parts of functional copolymer, 0.4 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.4 parts of 1,3-diaminothiourea, 4 parts of molybdenum sulfide nanosheets, 0.75 parts of rust inhibitor, 0.6 parts of dispersant, 3 parts of antioxidant, and 0.45 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester; the base oil is DowSyn PAO10.

[0033] The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester and an initiator to a high boiling point solvent, stirring and reacting for 4 hours at 65°C in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 5 times, and finally drying in a vacuum drying oven at 90°C to constant weight to obtain the functional copolymer; the mass ratio of the bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester, initiator and high boiling point solvent is 1:1:1.5:0.65:0.05:18; the initiator is azobisisobutyronitrile; the high boiling point solvent is N-methylpyrrolidone; and the inert gas is neon.

[0034] The preparation method of the Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole is described in: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole [J]. Chemical Reagents, 2002 (6): 344-345; the diameter of the molybdenum sulfide nanosheets is 200-500nm and the thickness is 5-10nm, which is provided by Xi'an Qiyue Biotechnology Co., Ltd.; the rust inhibitor is petroleum barium sulfonate; the dispersant is lubricating oil dispersant T154; the antioxidant is 2,4,6-tri-tert-butylphenol; and the modified rosin is KOMOTAC® H120K modified rosin resin.

[0035] A preparation method of the high-adhesion port machinery lubricating grease comprises the following steps: after uniformly mixing the components by weight, stirring for 27 minutes at a temperature of 100° C. and a pressure of 0.1 MPa, cooling to 50° C., and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease; the vacuum degree of the negative pressure degassing is 0.05 MPa.

[0036] Example 4: A high-adhesion port machinery lubricating grease, comprising the following components in parts by weight: 65 parts of base oil, 4.5 parts of functional copolymer, 0.5 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.45 parts of 1,3-diaminothiourea, 4.5 parts of molybdenum sulfide nanosheets, 0.9 parts of rust inhibitor, 0.9 parts of dispersant, 3.5 parts of antioxidant, and 0.5 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester; the base oil is DowSyn PAO10.

[0037] The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester and an initiator into a high boiling point solvent, stirring and reacting for 4.5 hours at 68° C. in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 5 times, and finally drying in a vacuum drying oven at 93° C. to constant weight to obtain the functional copolymer; The mass ratio of bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinylboronic acid pinacol ester, initiator and high boiling point solvent is 1:1.1:1.8:0.75:0.055:19; the initiator is azobisisobutyronitrile; the high boiling point solvent is a mixture of dimethyl sulfoxide, N,N-dimethylformamide and N-methylpyrrolidone in a mass ratio of 1:1:2; the inert gas is nitrogen.

[0038] The preparation method of the Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole is as follows: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole [J]. Chemical Reagents, 2002 (6): 344-345; the diameter of the molybdenum sulfide nanosheets is 200-500nm and the thickness is 5-10nm, and they are provided by Xi'an Qiyue Biotechnology Co., Ltd.; the rust inhibitor is a mixture of benzotriazole, lanolin magnesium soap, and barium petroleum sulfonate in a mass ratio of 1:3:5; the dispersant is a lubricating oil dispersant T154; the antioxidant is a mixture of 2,6-di-tert-butyl-4-nonylphenol, 2,6-di-tert-butyl-p-cresol, and 2,4,6-tri-tert-butylphenol in a mass ratio of 1:1:1; the modified rosin is KOMOTAC® H120K modified rosin resin.

[0039] A method for preparing the high-adhesion port machinery lubricating grease comprises the following steps: after uniformly mixing the components by weight, stirring for 30 minutes at a temperature of 105° C. and a pressure of 0.1 MPa, cooling to 53° C., and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease; the vacuum degree of the negative pressure degassing is 0.06 MPa.

[0040] Example 5: A high-adhesion port machinery lubricating grease comprises the following components in parts by weight: 60 parts of base oil, 5 parts of functional copolymer, 0.6 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.5 parts of 1,3-diaminothiourea, 5 parts of molybdenum sulfide nanosheets, 1 part of rust inhibitor, 1 part of dispersant, 4 parts of antioxidant, and 0.6 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and vinyl boric acid pinacol ester; the base oil is DowSyn PAO10.

[0041] The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boronic acid pinacol ester and an initiator to a high boiling point solvent, stirring and reacting for 5 hours at 70°C in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 6 times, and finally drying in a vacuum drying oven at 95°C to constant weight to obtain the functional copolymer; the mass ratio of the bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinyl thiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boronic acid pinacol ester, initiator and high boiling point solvent is 1:1.2:2:0.8:0.06:20; the initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; and the inert gas is nitrogen.

[0042] The preparation method of the meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole is described in: Guo Yong, Shao Shijun, He Lijun, et al. Synthesis and Characterization of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole [J]. Chemical Reagents, 2002 (6): 344-345; the diameter of the molybdenum sulfide nanosheets is 200-500nm and the thickness is 5-10nm, which is provided by Xi'an Qiyue Biotechnology Co., Ltd.; the rust inhibitor is lanolin magnesium soap; the dispersant is lubricating oil dispersant T154; the antioxidant is 2,6-di-tert-butyl-4-nonylphenol; and the modified rosin is KOMOTAC® H120K modified rosin resin.

[0043] A method for preparing the high-adhesion port machinery lubricating grease comprises the following steps: after uniformly mixing the components by weight, stirring for 32 minutes at a temperature of 110° C. and a pressure of 0.1 MPa, cooling to 55° C., and performing negative pressure degassing to obtain the high-adhesion port machinery lubricating grease; the vacuum degree of the negative pressure degassing is 0.07 MPa.

[0044] Comparative Example 1 A high-adhesion port machinery lubricating grease and a preparation method thereof, which is substantially the same as Example 1, except that Meso-tetramethyl-meso-tetra-p-aminophenylcalix[4]pyrrole and 1,3-diaminothiourea are not added.

[0045] Comparative Example 2 A high-adhesion port machinery lubricating grease and a preparation method thereof, which are substantially the same as those in Example 1, except that 4-methyl-5-vinylthiazole and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide are not added.

[0046] In order to further illustrate the beneficial technical effects of the high-adhesion port machinery lubricating grease involved in each embodiment of the present invention, the high-adhesion port machinery lubricating grease involved in Examples 1-5 and Comparative Examples 1-2 was subjected to relevant performance tests. The test results are shown in Table 1. The test method is as follows: the four-ball machine method is used to refer to the current national standard of my country for testing; in the four-ball experimental test results, at a certain temperature and speed, the maximum non-seizure load PB value represents the maximum load at which the steel ball does not seize in the lubricated state. The higher the PB value, the better the lubrication performance of the lubricating grease; the sintering load PD value represents the load that increases step by step. The upper and lower steel balls sinter at high temperature due to excessive load, and the equipment has to stop running. The higher the PD value, the better the extreme pressure lubrication performance of the lubricating grease. The wear spot diameter d value represents the size of the wear spot diameter caused by friction on the load-bearing steel ball surface. The smaller the d value, the better the anti-wear ability and lubricity of the lubricating grease. The salt spray test is the maximum test time at 35℃±1℃ when the corrosion grade is Class A (qualified). For specific test methods, please refer to SH / T 0081-1991; the damp heat test is the maximum test time at 49℃±1℃ when the corrosion grade is Class A (qualified). For specific test methods, please refer to GB / T 2361-1992; the adhesion test is to evenly apply lubricating grease to the wire rope of the port machinery. If no grease flows down from the wire rope within 6 months, and no hardening, cracking or falling off occurs, the adhesion is qualified, otherwise it is unqualified.

[0047] Table 1

[0048] As can be seen from Table 1, the high-adhesion port machinery lubricating grease disclosed in the embodiment of the present invention has better lubrication performance, better salt spray and wet heat resistance, and better adhesion performance than the comparative example product; the combined use of meso-tetramethyl-meso-tetraaminophenylcalix [4] pyrrole, 1,3-diaminothiourea, 4-methyl-5-vinylthiazole and N-(4-cyano-3-trifluoromethylphenyl) methacrylamide is beneficial to improving the above-mentioned properties.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-adhesion port machinery lubricating grease, characterized in that: The invention comprises the following components in parts by weight: 60-80 parts of base oil, 3-5 parts of functional copolymer, 0.1-0.6 parts of Meso-tetramethyl-meso-tetraaminophenyl cup [4] pyrrole, 0.3-0.5 parts of 1,3-diaminothiourea, 3-5 parts of molybdenum sulfide nanosheets, 0.5-1 parts of rust inhibitor, 0.1-1 parts of dispersant, 2-4 parts of antioxidant and 0.3-0.6 parts of modified rosin; the functional copolymer comprises structural units introduced by the following monomers: bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide and vinyl boric acid pinacol ester.

2. The high-adhesion port machinery lubricating grease according to claim 1, characterized in that: The base oil is DowSynPAO10.

3. The high adhesion port machinery lubricating grease according to claim 1, characterized in that: The preparation method of the functional copolymer comprises the following steps: adding bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, vinyl boric acid pinacol ester and an initiator into a high boiling point solvent, stirring and reacting for 3-5 hours at 60-70° C. in an inert gas atmosphere, then precipitating in water, washing the precipitated polymer with ethanol for 3-6 times, and finally drying in a vacuum drying oven at 85-95° C. to constant weight to obtain the functional copolymer.

4. The high-adhesion port machinery lubricating grease according to claim 3 is characterized in that: The mass ratio of the bistrimethylsilyl vinyl phosphate, 4-methyl-5-vinylthiazole, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, vinylboronic acid pinacol ester, initiator and high boiling point solvent is 1:(0.8-1.2):(1-2):(0.5-0.8):(0.04-0.06):(15-20).

5. The high-adhesion port machinery lubricating grease according to claim 3, characterized in that: The initiator is azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone; and the inert gas is any one of nitrogen, helium, neon, and argon.

6. The high-adhesion port machinery lubricating grease according to claim 1, characterized in that: The molybdenum sulfide nanosheet has a diameter of 200-500 nm and a thickness of 5-10 nm.

7. The high-adhesion port machinery lubricating grease according to claim 1, characterized in that: The rust inhibitor is at least one of benzotriazole, lanolin magnesium soap and petroleum barium sulfonate; and the dispersant is lubricating oil dispersant T154.

8. The high-adhesion port machinery lubricating grease according to claim 1, characterized in that: The antioxidant is any one of 2,6-di-tert-butyl-4-nonylphenol, 2,6-di-tert-butyl-p-cresol or 2,4,6-tri-tert-butylphenol; and the modified rosin is KOMOTAC® H120K modified rosin resin.

9. A method for preparing the high-adhesion port machinery lubricating grease according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: uniformly mixing the components by weight, stirring for 22-32 minutes at a temperature of 90-110° C. and a pressure of 0.1 MPa, cooling to 45-55° C., and performing negative pressure degassing to obtain high-adhesion port machinery lubricating grease.

10. The method for preparing the high-adhesion port machinery lubricating grease according to claim 9, characterized in that: The vacuum degree of the negative pressure degassing is 0.03-0.07 MPa.

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