CN101205496B - Grease additive, grease containing the same and preparation thereof - Google Patents
Grease additive, grease containing the same and preparation thereof Download PDFInfo
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- CN101205496B CN101205496B CN 200610165310 CN200610165310A CN101205496B CN 101205496 B CN101205496 B CN 101205496B CN 200610165310 CN200610165310 CN 200610165310 CN 200610165310 A CN200610165310 A CN 200610165310A CN 101205496 B CN101205496 B CN 101205496B
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Abstract
The invention relates to a lubricating grease additive, lubricating grease containing the lubricating grease additive and the preparation methods thereof. The lubricating grease additive comprises: a. a formula A compound/MoS2 composite nanometer particle; b. at least one auxiliary agent chosen from the following substances: anti-oxygen agent and antirust agent. The lubricating grease additive of the invention can improve the oxidation-resistant performance and the copper corrosion resistant performance of a lubricating grease product.
Description
Technical field
The present invention relates to a kind of grease additive, contain its railway grease and their preparation method.More specifically, the present invention relates to a kind of anti-oxidant and/or suppress grease additive, the railway grease that contains it and their preparation method of copper corrosion.
Background technology
Extreme-pressure anti-friction additive is very important one type of additive in the lubricant.In recent years, the extreme-pressure anti-wear effect of thiadiazoles derivative has obtained further understanding, and agent begins to show up prominently as the railway grease high-performance extreme-pressure anti-wear.The not phosphorous and heavy metal element of this type extreme pressure anti-wear additives is ashless additive, but also has functions such as antioxygen, metal passivation, is the multi-functional extreme pressure anti-wear additives (referring to U.S. Pat P 6,365,557) of environmental friendliness, excellent performance.Wherein, the reaction product of dithio diazole thioketones and butoxy triethylene glycol has four splendid ball extreme pressure properties and terraced nurse simultaneously and agree extreme pressure property, and ashless, biodegradable, therefore has extremely strong application background.Though this material has outstanding extreme pressure property, anti-wear and wear-resistant performance is not enough, still has improved necessity.
Summary of the invention
The inventor is unexpected to be found, if the reaction product/MoS of synthetic dithio diazole thioketones and butoxy triethylene glycol
2Composite nano particle (being called for short composite nano particle, down together) is used for basic lubricating grease, finds that such composite nano particle has overcome the not good problem of reaction product anti-wear and wear-resistant performance of dithio diazole thioketones and butoxy triethylene glycol.On this basis; Through further research; The contriver finds, if in containing the railway grease of composite nano particle, add oxidation inhibitor and/or rust-preventive agent is processed grease additive, can make grease product have the antioxidant property of further improvement and/or suppresses the performance of copper corrosion.
Therefore, the present invention provides a kind of grease additive, contains
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The present invention also provides a kind of method for preparing grease additive, comprises a kind of formula A compound/MoS
2Composite nano particle mixes with at least a auxiliary agent that is selected from oxidation inhibitor and rust-preventive agent.
The present invention also provides a kind of railway grease, contains
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The present invention also provides a kind of method for preparing railway grease, comprises mixing a kind of basic lubricating grease and a kind of grease additive that comprises following component:
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The present invention also provides a kind of method for preparing railway grease, comprises mixing following component:
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
In the present invention, " formula A compound/MoS
2Composite nano particle " be by formula A compound and MoS
2The nano level particle of the mixture that constitutes.Can adopt following method to obtain: in being heated to 30-90 ℃ deionized water, logical rare gas element adds ammonium thiomolybdate then to dissolving fully.Stir adding formula A compound and absolute ethyl alcohol down, add the oxammonium hydrochloride reaction then, add concentrated hydrochloric acid again and continue reaction, have deposition to generate; Precipitate with deionized water and organic solvent flushing; Product is dry, obtain formula A compound/MoS
2Composite nano particle.
Description of drawings
Fig. 1 is the infrared spectrogram of formula A compound.
Fig. 2 is compd A and MoS
2The composite nano particle ir spectra that constitutes.
Fig. 3 schemes (▲ formula A compound over time for the frictional coefficient of different grease products;
12 hydroxyl railway grease; ■ T
321● T
351).
Embodiment
In the grease additive of the present invention, contain
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The method for preparing grease additive of the present invention comprises a kind of formula A compound/MoS
2Composite nano particle mixes with at least a auxiliary agent that is selected from oxidation inhibitor and rust-preventive agent.
In the railway grease of the present invention, contain
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The method for preparing railway grease of the present invention comprises and mixes a kind of basic lubricating grease and a kind of grease additive that comprises following component:
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
The present invention also provides a kind of method for preparing railway grease, comprises mixing following component:
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
In grease additive of the present invention, railway grease and their preparation method, employed formula A compound/MoS
2Composite nano particle---promptly by formula A compound and MoS
2The nano level particle of the mixture that constitutes---can adopt following method to obtain: in being heated to 30-90 ℃ deionized water, logical rare gas element adds ammonium thiomolybdate then to dissolving fully.(mol ratio of formula A compound and ammonium thiomolybdate is preferably 0.1 to adding formula A compound: 10-10: 0.1 under stirring; More preferably 0.2: 5-5: 0.2; 0.5) and absolute ethyl alcohol further is preferably 0.5: 2-2:; Add the oxammonium hydrochloride reaction then, add concentrated hydrochloric acid again and continue reaction, have deposition to generate; Precipitate with deionized water and organic solvent flushing; Product is dry, obtain formula A compound/MoS
2Composite nano particle.This nanoparticle has infrared spectrogram shown in Figure 2.
Be the object of the invention, formula A compound/MoS
2The particle diameter of composite nano particle is not higher than 100nm.
In the present invention, " formula A compound " compound of referring to have following molecular formula:
This compound can make by following mode: dithio diazole thioketones and butoxy triethylene glycol are reacted between 90-150 ℃, filter then, obtain product.Through characterizing, product has infrared spectrogram shown in Figure 1.Dithio diazole thioketones and butoxy triethylene glycol are preferably with 0.1: 10-10: 0.1 mol ratio, more preferably with 0.2: 5-5: 0.2 mol ratio, most preferably with 0.2: 1-0.5: 1 mol ratio, at 100-140 ℃, more preferably reaction between 110-135 ℃; Reaction times is preferably 0.5-5 hour, more preferably 1-3 hour, most preferably is 1.5-2 hour.
Being used for oxidation inhibitor of the present invention comprises but is not limited to phenol type, amine type, sulfur-bearing, phosphorus, nitrogen compound.In grease additive, the content of oxidation inhibitor is generally 1.0-40%, preferred 10-35%, and more preferably 25-35% is with the formula A compound/MoS that is adopted
2The weight of the nanoparticle of compound is benchmark.Wherein, phenol type antioxidant is preferred 2, the 6-toluene di-tert-butyl phenol; The preferred pentanoic of amine type oxidation inhibitor; Sulfur-bearing, phosphorus, the preferred thiodiphenylamine of nitrogen compound oxidation inhibitor.
Rust-preventive agent according to the present invention comprises but is not limited to organic carboxyl acid class rust-preventive agent, organic amine rust-preventive agent, sulphur, nitrogen heterocycles rust-preventive agent.In grease additive, the content of rust-preventive agent is generally 0.1-40%, preferred 5.0-35%, and more preferably 10.0-35% is with the formula A compound/MoS that is adopted
2The weight of composite nano particle is benchmark.Wherein, the preferred dodecenylsuccinic acid of organic carboxyl acid class rust-preventive agent; The preferred laurylene base of organic amine rust-preventive agent tetramethylenediamine, and 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acids; The preferred benzotriazole of nitrogen heterocycles rust-preventive agent.
In railway grease of the present invention, basic lubricating grease can be to be suitable for compound/MoS with formula A
2The railway grease that composite nano particle is used in combination is preferably 12 hydroxy lithium stearate base fat.12 hydroxy lithium stearate base fat can following raw materials according mix: 12 oxystearic acids, base oil (the for example Dormant oils of 500SN) and Lithium Hydroxide MonoHydrate.
In railway grease of the present invention, each component of formation grease additive-promptly constitute two types of materials of grease additive: a kind of is formula A compound/MoS
2Composite nano particle; And at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent---content be 0.1-10%, preferred 1.0-8.0%, 2.0-5.0% more preferably is a benchmark with the weight of basic lubricating grease.
For preparing the purpose of grease additive of the present invention, with a kind of formula A compound/MoS
2Composite nano particle and at least a is selected from the auxiliary agent mixing process of oxidation inhibitor and rust-preventive agent, can adopt methods such as heating, stirring.
For preparing the purpose of railway grease of the present invention, can be earlier with a kind of formula A compound/MoS
2Composite nano particle mixes with at least a auxiliary agent that is selected from oxidation inhibitor and rust-preventive agent, processes grease additive, and then grease additive is mixed with basic lubricating grease; Also can be directly with a kind of basic lubricating grease, a kind of formula A compound/MoS
2Composite nano particle mixes with at least a auxiliary agent that is selected from oxidation inhibitor and rust-preventive agent.In two kinds of preparing methods, in each step, can optionally adopt heating, stirring etc.
Grease additive of the present invention can improve the antioxidant property and inhibition copper corrosion performance of grease product.
Embodiment
To the present invention be described through embodiment below.The present invention comprises but is not limited to following examples.In an embodiment, 12 hydroxy lithium stearate base fat are for to form with following raw materials mix: 12 oxystearic acids, 10% (weight percentage, down together); Base oil is the Dormant oils of 500SN, 90%; Lithium Hydroxide MonoHydrate, 0.8% (the weight summation with 12 oxystearic acids and base oil is a benchmark).12 hydroxy lithium stearate base fat, 1/4 cone penetration of preparation is 64, belongs to 2# fat.
Preparation embodiment 1
The preparation of formula A compound
To add in the three-necked flask dithio diazole thioketones and butoxy triethylene glycol (being designated as " ketone " and " alcohol " respectively),, filter then, obtain product in the certain temperature reaction some time.
Through characterizing, product has infrared spectrogram shown in Figure 1.
Carry out 16 preparations altogether, the result is as shown in table 1:
The preparation of table 1 formula A compound
| Sequence number | Charge weight (ketone/alcohol) | Reinforced mol ratio (ketone/alcohol) | Temperature of reaction (℃) | Reaction times (hour) | Product weight (g) | Productive rate (%) |
| 1 | 5.96/20.6 | 0.2∶1 | 105 | 1.5 | 17.00 | 64 |
| 2 | 5.96/20.6 | 0.2∶1 | 115 | 2 | 18.59 | 70 |
| 3 | 5.96/20.6 | 0.2∶1 | 125 | 3 | 21.78 | 82 |
| 4 | 5.96/20.6 | 0.2∶1 | 135 | 4 | 19.12 | 72 |
| 5 | 2.98/4.12 | 0.5∶1 | 105 | 2.5 | 4.33 | 61 |
| 6 | 2.98/4.12 | 0.5∶1 | 115 | 1.5 | 5.11 | 72 |
| 7 | 2.98/4.12 | 0.5∶1 | 125 | 3 | 6.11 | 86 |
| 8 | 2.98/4.12 | 0.5∶1 | 135 | 2 | 5.32 | 75 |
| 9 | 2.98/2.06 | 1∶1 | 105 | 2.5 | 3.02 | 60 |
| 10 | 2.98/2.06 | 1∶1 | 115 | 3 | 3.73 | 74 |
| 11 | 2.98/2.06 | 1∶1 | 125 | 4 | 4.03 | 80 |
| 12 | 2.98/2.06 | 1∶1 | 135 | 4.5 | 3.53 | 70 |
| 13 | 5.96/2.06 | 2∶1 | 105 | 2.5 | 4.65 | 58 |
| 14 | 5.96/2.06 | 2∶1 | 115 | 3.5 | 5.61 | 70 |
| 15 | 5.96/2.06 | 2∶1 | 125 | 3 | 6.10 | 76 |
| 16 | 5.96/2.06 | 2∶1 | 135 | 4 | 5.21 | 65 |
Preparation embodiment 2
Formula A compound/MoS
2
The preparation of composite nano particle I (being called for short composite nano particle I)
In there-necked flask, add the 150ml deionized water, be heated to 85 ℃, constant temperature.Behind the helium injection gas 10 minutes, add the 2.6g ammonium thiomolybdate to dissolving fully.Constant temperature stirs the formula A compound and the 20ml absolute ethyl alcohol that add 1.8g down, adds the oxammonium hydrochloride of 0.7g then, reacts 2 hours, adds concentrated hydrochloric acid 1ml more gradually, continues reaction 6 hours, has brown precipitate to generate.Precipitate with deionized water, absolute ethyl alcohol, acetone wash in a large number.Product is put into vacuum drying oven, and 80 ℃ of drying temperatures dry 48 hours, obtain formula A compound/MoS
2Composite nano particle 3.3g.Characterize through transmission electron microscope (TEM), find that its particle diameter is below the 45nm.
The gained nanoparticle has infrared spectrogram shown in Figure 2.
Preparation embodiment 3
Formula A compound/MoS
2
The preparation of composite nano particle II (being called for short composite nano particle II)
In there-necked flask, add the 180ml deionized water, be heated to 70 ℃, constant temperature.Behind the helium injection gas 35 minutes, add the 4.0g ammonium thiomolybdate to dissolving fully.Constant temperature stirs the formula A compound and the 30ml absolute ethyl alcohol that add 2.3g down.The oxammonium hydrochloride that adds 1.2g then reacted 2 hours, added concentrated hydrochloric acid 1ml more gradually, continued reaction 6 hours, had brown precipitate to generate.Precipitate with deionized water, absolute ethyl alcohol, acetone wash in a large number.Product is put into vacuum drying oven, and 80 ℃ of drying temperatures dry 48 hours, obtain formula A compound/MoS
2Composite nano particle 4.76g.Characterize through transmission electron microscope (TEM), find that its particle diameter is below the 50nm.
The gained nanoparticle has infrared spectrogram shown in Figure 2.
The comparative example 1
Contain the preparation of greases of formula A compound and the test of performance
Adopt 3g formula A compound at room temperature to mix with 100g 12 hydroxy lithium stearate base fat; Obtain grease product (wherein not adding oxidation inhibitor and rust-preventive agent); And carrying out anti-oxidant and anti-copper corrosion experiment respectively according to ASTM D942 and ASTM D4048, the result is as follows.
The comparative example 2
The anti-wear and wear-resistant performance test and the anti-agglutinatting property of formula A compound can be tested
1. antifriction performance experiment
Adopt formula A compound, the T of 3g respectively
321And T
351(T
321And T
351Be railway grease extreme-pressure anti-friction additive commonly used, the commercially available prod, down with), with 100g 12 hydroxy lithium stearate base fat in mixed at room temperature, make grease product.Products obtained therefrom is carried out the antifriction performance experiment, and experiment is carried out according to SH/T0189-92, adopts Serial 201-1284-VD Falex CorporationAurora.1L 60505U.S.A friction wear testing machine; Motor speed is 1200 ± 50r/min, and temperature is a room temperature, load 392N; Time 40min; Estimate the antifriction performance of railway grease, result (frictional coefficient is more little good more, and representative can effectively reduce the energy waste that produces because of friction) as shown in Figure 3.
Fig. 3 (is denoted as formula A compound, T respectively for adopting various additives
321And T
351) railway grease that makes and the frictional coefficient and the time chart of 12 hydroxy lithium stearate base fat (blank fat, not doping).As can beappreciated from fig. 3, the railway grease that contains formula A compound has high and unsettled frictional coefficient curve, and its antifriction performance is bad.
2. abrasion resistance experiment
Adopt the additive of Different Weight ratio (is benchmark with 12 hydroxy lithium stearate base fat weight) respectively, with 100g 12 hydroxy lithium stearate base fat in mixed at room temperature, make grease product.Products obtained therefrom is carried out the abrasion resistance experiment.Experiment is carried out according to SH/T0204-92; Adopt Serial201-1284-VD Falex Corporation Aurora.1L 60505U.S.A friction wear testing machine, motor speed is 1200 ± 50r/min, and temperature is a room temperature; Load 392N; Time 60min, result's (the mill spot is more little, shows that abrasion resistance is good more) as shown in table 2.
The wear scar diameter of the railway grease that table 2 makes with different additive
| Additive and addition | Wear scar diameter, mm |
| (additive-free, promptly only 12-hydroxy lithium stearate base fat) | 0.61 |
| Formula A compound, 1% | 0.70 |
| Formula A compound, 2% | 0.71 |
| Formula A compound, 3% | 0.70 |
| Formula A compound, 4% | 0.75 |
| Composite nano particle I, 2% | 0.43 |
| Composite nano particle II, 2% | 0.43 |
| Composite nano particle II, 3% | 0.43 |
| Composite nano particle II, 4% | 0.40 |
| T 321，2％ | 0.62 |
| T 351，2％ | 0.50 |
3. anti-agglutinatting property can be tested
Adopt the additive of Different Weight ratio (is benchmark with 12 hydroxy lithium stearate base fat weight) respectively, with 100g 12 hydroxy lithium stearate base fat in mixed at room temperature, make grease product.Products obtained therefrom is carried out anti-agglutinatting property can test.Experiment is measured according to SH/T0202, and motor speed is 1770 ± 60r/min, and temperature is a room temperature, test period 10s.Can estimate railway grease extreme pressure property (the sintering load value is big more, and extreme pressure property is good more) with anti-agglutinatting property.The result is as shown in table 3.
Table 3 extreme pressure property experimental result
| Additive | Basis fat | Addition, m% | Four ball sintering loads, Kgf |
| Formula A compound | 12 hydroxy lithium stearate base fat | 3％ 2％ 1％ | 500 400 250 |
| ?T 321 | 12 hydroxy lithium stearate base fat | 3％ 2％ 1％ | 400 250 250 |
| ?T 351 | 12 hydroxy lithium stearate base fat | 3％ 2％ 1％ | 250 250 200 |
| Composite nano particle I | 12 hydroxy lithium stearate base fat | 3％ 2％ 1％ | 500 500 400 |
| Composite nano particle II | 12 hydroxy lithium stearate base fat | 4％ 3％ 2％ | 620 500 500 |
The comparative example 3
The test of preparation of greases and performance
12 hydroxy lithium stearate base fat 100g are at room temperature mixed with composite nano particle I 3g; Obtain grease product (wherein not adding oxidation inhibitor and rust-preventive agent); And carrying out anti-oxidant and anti-copper corrosion experiment respectively according to ASTM D942 and ASTM D4048, the result is as follows.
Embodiment 1-13
The test of the preparation of grease additive, preparation of greases and performance
Get the composite nano particle I and the II of the preparation embodiment 1-2 preparation of Different Weight respectively, at room temperature mix, obtain grease additive 1-13 with the oxidation inhibitor and the rust-preventive agent of Different Weight.
With resulting grease additive 1-13 respectively with basic lubricating grease in mixed at room temperature, obtain grease product 1-13, and carry out anti-oxidant and anti-copper corrosion experiment respectively according to ASTM D942 and ASTM D4048, the result is following.
Embodiment 1
Raw material: composite nano particle I 3g, dodecenylsuccinic acid 0.01g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 2
Raw material: composite nano particle II 3g, laurylene base fourth two ammonium 0.2g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 3
Raw material: composite nano particle I 3g, laurylene base tetramethylenediamine 1g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 4
Raw material: composite nano particle I 3g, 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acid 0.2g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 5
Raw material: composite nano particle II 3g, pentanoic 0.3g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 6
Raw material: composite nano particle I 3g, pentanoic 1.0g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 7
Raw material: composite nano particle II 3g, 2,6-toluene di-tert-butyl phenol 0.05g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 8
Raw material: composite nano particle I 3g, 2,6-toluene di-tert-butyl phenol 1g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 9
Raw material: composite nano particle II 3g, pentanoic 0.3g, dodecenylsuccinic acid 0.01g, 12 hydroxy lithium stearate base fat 100g.
Raw material: composite nano particle I 3g, pentanoic 1.0g, dodecenylsuccinic acid 0.01g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 11
Raw material: composite nano particle II 3g, 2,6-toluene di-tert-butyl phenol 0.05g, laurylene base fourth two ammonium 0.2g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 12
Raw material: composite nano particle I 3g, 2,6-toluene di-tert-butyl phenol 0.05g, laurylene base tetramethylenediamine 1g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 13
Raw material: composite nano particle II 3g, 2,6-toluene di-tert-butyl phenol 1g, 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acid 0.2g, 12 hydroxy lithium stearate base fat 100g.
Embodiment 14-22
The test of preparation of greases and performance
Get the composite nano particle I and the II of the preparation embodiment 1-2 preparation of Different Weight respectively; At room temperature mix with the oxidation inhibitor of Different Weight and rust-preventive agent and basic lubricating grease; Obtain grease product 14-24; And carrying out anti-oxidant and anti-copper corrosion experiment respectively according to ASTM D942 and ASTM D4048, the result is following.
Embodiment 14
Raw material: 12 hydroxy lithium stearate base fat 90g, composite nano particle II 3g, 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acid 1g.
Embodiment 15
Raw material: 12 hydroxy lithium stearate base fat 100g, composite nano particle I 3g, benzotriazole 0.05g.
Embodiment 16
Raw material: 12 hydroxy lithium stearate base fat 100g, composite nano particle II 3g, benzotriazole 0.1g.
Embodiment 17
Raw material: 12 hydroxy lithium stearate base fat 100g, composite nano particle II 3g, thiodiphenylamine 0.5g.
Embodiment 18
Raw material: 12 hydroxy lithium stearate base fat 75g, composite nano particle I 3g, thiodiphenylamine 1.0g.
Embodiment 19
Raw material: 12 hydroxy lithium stearate base fat 83g, composite nano particle II 3g, 2,6-toluene di-tert-butyl phenol 1g, 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acid 1g.
Raw material: 12 hydroxy lithium stearate base fat 95g, composite nano particle I 3g, thiodiphenylamine 0.3g, benzotriazole 0.05g.
Embodiment 21
Raw material: 12 hydroxy lithium stearate base fat 100g, composite nano particle II 3g, thiodiphenylamine 0.5g, benzotriazole 0.1g.
Embodiment 22
Raw material: 12 hydroxy lithium stearate base fat 95g, composite nano particle II 3g, thiodiphenylamine 1.0g, benzotriazole 0.1g.
Claims (15)
1. a grease additive contains
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
2. according to the grease additive of claim 1, wherein said formula A compound/MoS
2Composite nano particle adopts following method to obtain: in being heated to 30-90 ℃ deionized water, logical rare gas element adds ammonium thiomolybdate then to dissolving fully; Stir adding formula A compound and absolute ethyl alcohol down, add the oxammonium hydrochloride reaction then, add concentrated hydrochloric acid again and continue reaction, have deposition to generate; Precipitate with deionized water and organic solvent flushing; Product is dry, obtain formula A compound/MoS
2Composite nano particle.
3. according to the grease additive of claim 1, wherein oxidation inhibitor is selected from phenol type, amine type, sulfur-bearing, phosphorus and nitrogen compound.
4. according to the grease additive of claim 3, wherein oxidation inhibitor is selected from 2,6-toluene di-tert-butyl phenol, pentanoic and thiodiphenylamine.
5. according to the grease additive of claim 1, wherein rust-preventive agent is selected from organic carboxyl acid class rust-preventive agent, organic amine rust-preventive agent, sulphur and nitrogen heterocycles rust-preventive agent.
6. according to the grease additive of claim 5, wherein rust-preventive agent is selected from dodecenylsuccinic acid, laurylene base tetramethylenediamine, 2-amino-ethyl 17 alkenyl imidazoline dodecenylsuccinic acid and benzotriazoles.
7. according to the grease additive of claim 1, wherein, with formula A compound/MoS
2The weight of composite nano particle is benchmark, and the content of oxidation inhibitor is 1.0-40%, and the content of rust-preventive agent is 0.1-40%.
8. a method for preparing grease additive comprises a kind of formula A compound/MoS
2Composite nano particle mixes with at least a auxiliary agent that is selected from oxidation inhibitor and rust-preventive agent.
9. according to Claim 8 method, wherein said formula A compound/MoS
2Composite nano particle adopts following method to obtain: in being heated to 30-90 ℃ deionized water, logical rare gas element adds ammonium thiomolybdate then to dissolving fully; Stir adding formula A compound and absolute ethyl alcohol down, add the oxammonium hydrochloride reaction then, add concentrated hydrochloric acid again and continue reaction, have deposition to generate; Precipitate with deionized water and organic solvent flushing; Product is dry, obtain formula A compound/MoS
2Composite nano particle.
10. a railway grease contains
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
11. according to the railway grease of claim 10, wherein said formula A compound/MoS
2Composite nano particle adopts following method to obtain: in being heated to 30-90 ℃ deionized water, logical rare gas element adds ammonium thiomolybdate then to dissolving fully; Stir adding formula A compound and absolute ethyl alcohol down, add the oxammonium hydrochloride reaction then, add concentrated hydrochloric acid again and continue reaction, have deposition to generate; Precipitate with deionized water and organic solvent flushing; Product is dry, obtain formula A compound/MoS
2Composite nano particle.
12. according to the railway grease of claim 10, wherein basic lubricating grease is 12 hydroxy lithium stearate base fat.
13., wherein, be benchmark, constitute each component of grease additive with the weight of basic lubricating grease according to the railway grease of claim 10---promptly constitute two types of materials of grease additive: a kind of formula A compound/MoS
2Composite nano particle; And at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent---content be 0.1-10%.
14. a method for preparing railway grease comprises and mixes a kind of basic lubricating grease and a kind of grease additive that comprises following component:
A. formula A compound/MoS
2Composite nano particle;
B. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
15. a method for preparing railway grease comprises and mixes following component:
A. basic lubricating grease;
B. formula A compound/MoS
2Composite nano particle;
C. at least a auxiliary agent that is selected from following material: oxidation inhibitor and rust-preventive agent.
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|---|---|---|---|
| CN 200610165310 CN101205496B (en) | 2006-12-18 | 2006-12-18 | Grease additive, grease containing the same and preparation thereof |
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| CN104611098A (en) * | 2015-01-04 | 2015-05-13 | 吴江华威特种油有限公司 | Automotive lubricating oil |
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