CN102703168A - Extreme pressure antiwear additive composition and application thereof to lubricating grease - Google Patents
Extreme pressure antiwear additive composition and application thereof to lubricating grease Download PDFInfo
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- CN102703168A CN102703168A CN201210204306XA CN201210204306A CN102703168A CN 102703168 A CN102703168 A CN 102703168A CN 201210204306X A CN201210204306X A CN 201210204306XA CN 201210204306 A CN201210204306 A CN 201210204306A CN 102703168 A CN102703168 A CN 102703168A
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Abstract
The invention belongs to the technical field of lubricating grease and provides an extreme pressure antiwear additive composition. The extreme pressure antiwear composition consists of a thiadiazoles compound and an organic bismuth compound. When the extreme pressure antiwear additive composition provided by the invention is added into the lubricating grease, the extreme pressure antiwear performances of the lubricating grease can be obviously improved and the extreme pressure antiwear additive composition also can take effects of inhibiting the metal corrosiveness of oils and prolonging the oxidation induction time. The extreme pressure antiwear additive composition can be widely applied to various commercial lubricating grease such as composite lithium saponify, 12-hydroxyl lithium saponify, composite aluminium-based grease, polyurea grease and the like.
Description
Technical field
The invention belongs to technical field of lubricating grease, is a kind of extreme-pressure anti-friction additive composite that is applicable to multiple railway grease specifically.
Background technology
Along with modern machinery and equipment power, speed, the isoparametric raising day by day of precision; Working load is increasingly high, and environment for use is also more and more harsher, causes the wearing and tearing of mechanical component and life-span all to receive great influence; For the lubricity of improving lubricating grease with prolong equipment life; We need reduce the friction resistance between the friction surface to wherein adding a certain amount of extreme pressure anti-wear additives, prevent the wearing and tearing and the scratch of material.Therefore, research has the ashless environment-friendly type grease additive of outstanding extreme pressure and abrasion resistance, and very important meaning is arranged.
2; 5-dimercapto-1; 3, the 4-Thiadizole dimer has good extreme pressure property and corrosion inhibition performance in railway grease, and this thiadiazoles ring and metallic surface that mainly is attributed to wherein forms stronger bidentate chelate bond; Make it tightly be adsorbed on the metallic surface, thereby play the buffering load and suppress the corrosive effect.But this mechanism of action has also suppressed additive the wearing and tearing that friction chemical reaction reduces material has taken place in the metallic surface, causes this additive to be difficult to improve at the abrasion resistance of railway grease.Therefore, how to select a kind of novel method for use, overcome the defective of Thiadizole dimer abrasion resistance difference, guarantee extreme pressure and corrosion inhibition performance that it is good simultaneously, undoubtedly research and development high-performance railway grease is had crucial directive significance.
In order to come effective head it off; We have developed a kind of thiadiazole compound and bismuth organic compound composite additive of containing; This compositions of additives has not only shown outstanding extreme pressure and wear-resistant synergisticing performance in railway grease, but also has shown good antioxygen and corrosion inhibition effect.
Summary of the invention
The object of the invention is exactly to above problem, has proposed a kind of extreme-pressure anti-friction additive composite, and the extreme pressure of ashless thiadiazoles polymer of the prior art in railway grease, wear-resistant and corrosion resistance all are significantly improved.
A kind of extreme-pressure anti-wear compositions of additives of the present invention is characterized in that comprising following component (to add the weight percent meter in the oil product):
Thiadiazole compound, 0.5-3%, bismuth organic compound, 0.5-8%.
Described thiadiazole compound is 2,5-dimercapto-1,3,4-Thiadizole dimer, 2,5-dimercapto-1,3, one of 4-thiadiazoles polymer, thiadiazoles derivative or their mixture.
Described bismuth compound is one of two butane group dithiocarbamic acid bismuth compounds, naphthenic acid bismuth, bismuth trioleate, Bismuth Octoate compound or their mixture.
Extreme-pressure anti-friction additive composite of the present invention can be widely used in the various railway grease; Like 12-hydroxyl lithium saponify, compositing lithio ester, aluminum complex grease, polyurea grease etc., in use the weight percent content with 1.0-8% joins in the railway grease; And contain the additive that can contain other types in the railway grease that is added with extreme-pressure anti-wear component of the present invention, like oxidation inhibitor, peace and quiet dispersing additive and rut preventives etc.
After in railway grease, adding extreme-pressure anti-friction additive composite of the present invention; Can find out by experimental data; Said composition can obviously improve the extreme pressure and the abrasion resistance of railway grease, and can suppress the metal protection and the antioxidant property that improves railway grease of railway grease effectively.
Embodiment
Embodiment 1-4
With 2 of Different Weight percentage concentration; 5-dimercapto-1; 3,4-Thiadizole dimer, dibutyl dithiocaarbamate bismuth, naphthenic acid bismuth and bismuth trioleate successively join in the compositing lithio ester (commercially available), after the heating for dissolving; Obtain embodiment 1-4, estimate extreme pressure, wear-resistant, the corrosion inhibition and antioxidant property of different railway grease prescriptions.Utilize four-ball tester to measure average wear scar diameter and the wear-resistant and extreme pressure property of sintering load evaluation additive mixture in railway grease, test conditions: the GCr15 steel ball, rotating speed 1450r/min, room temperature, long time consuming 60min, loading is 392N.Measure the corrosion inhibition performance of compositions of additives in railway grease, test conditions: 100 ℃ of temperature, time 24h through copper strip test.The antioxidant property of railway grease adopts differential scanning calorimetric experimental evaluation, test conditions: the heavy 2.00mg of test oil sample, oxygen flow 60mLmin
-1, temperature is 180 ℃.Experimental result is seen table 1.The result can find out from table, 2, and 5-dimercapto-1; 3; 4-Thiadizole dimer, 2,5-dimercapto-1,3; All shown good extreme pressure and wear-resistant synergisticing performance after 4-thiadiazoles polymer and dibutyl dithiocaarbamate bismuth are composite, their compound backs are also showing good synergism aspect corrodibility that suppresses railway grease and the raising antioxidant property simultaneously.
Table 1
Embodiment 5-7
With 2 of Different Weight percentage concentration; 5-dimercapto-1; 3; 4-thiadiazoles derivative (production of trade names
U.S. R.T.Vanderbilt company) and dibutyl dithiocaarbamate bismuth successively join in the aluminum complex grease (commercially available); After the heating for dissolving, obtain embodiment 5-7, estimate its wear-resistant, extreme pressure property.Utilize four-ball tester, measure extreme pressure and abrasion resistance that average wear scar diameter, last non seizure load, sintering load are estimated oil product.Test conditions: room temperature, GCr15 steel ball, rotating speed 1450r/min, room temperature, load 392N, long time consuming 60min; Measure the corrosion inhibition performance of compositions of additives in railway grease, test conditions: 100 ℃ of temperature, time 24h through copper strip test.Experimental result is seen table 2.The result can find out from table, and is of the present invention 2,5-dimercapto-1,3, and 4-thiadiazoles derivative and dibutyl dithiocaarbamate bismuth not only have good extreme pressure and wear-resistant synergisticing performance in railway grease, and have shown erosion resistance preferably.
Table 2
Embodiment 8-10
With 2 of Different Weight percentage concentration, 5-dimercapto-1,3,4-Thiadizole dimer and naphthenic acid bismuth, bismuth trioleate, Bismuth Octoate join in the 12-hydroxyl lithium saponify (commercially available), obtain embodiment 8-10 after the heating for dissolving, estimate its anti-extreme pressure and abrasion resistance.Utilize four-ball tester to measure the abrasion resistance of average wear scar diameter evaluation railway grease, wherein through measuring the abrasion resistance of average wear scar diameter evaluation railway grease, test conditions: rotating speed 1450r/min, room temperature, long time consuming 60min, load 392N; Utilize terraced nurse to agree trier and measure test specimen and do not abrade and block the maximum load of stinging, i.e. OK value, the OK value is big more, and extreme pressure property is good more, and test conditions is: speed of mainshaft 800r/min, test period 10min.Experimental result is seen table 3.The result can find out from table; 2 of different ratios, 5-dimercapto-1,3; After 4-Thiadizole dimer and organic acid bismuth salt compound are composite; Railway grease when its wear scar diameter exists less than single agent, and its terraced nurse agree the OK value tangible increase also arranged, and explains that Thiadizole dimer and organic acid bismuth salt compound have good extreme-pressure anti-wear synergisticing performance after composite.
Table 3
Claims (6)
1. an extreme-pressure anti-friction additive composite is characterized in that, said composition comprises following component, has added the weight percent meter in the railway grease:
Component title %
A. thiadiazole compound 0.5-3
B. bismuth organic compound 0.5-8
2. extreme-pressure anti-friction additive composite according to claim 1 is characterized in that: described thiadiazole compound is 2,5-dimercapto-1; 3,4-Thiadizole dimer, 2,5-dimercapto-1; 3, one of 4-thiadiazoles polymer, thiadiazoles derivative or their mixture.
3. thiadiazole compound according to claim 2 is characterized in that: described thiadiazoles derivative is 2,5-dimercapto-1,3,4-thiadiazoles substituent.
4. extreme-pressure anti-friction additive composite according to claim 1 is characterized in that: described bismuth compound is one of bismuth carboxylate compound, dialkyldithiocarbamacompositions bismuth compound or their mixture.
5. bismuth compound according to claim 4 is characterized in that: described bismuth carboxylate compound is one of naphthenic acid bismuth, bismuth trioleate, Bismuth Octoate compound or their mixture.
6. bismuth compound according to claim 4 is characterized in that: described dialkyldithiocarbamacompositions bismuth is the dibutyl dithiocaarbamate bismuth compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204306XA CN102703168A (en) | 2012-06-20 | 2012-06-20 | Extreme pressure antiwear additive composition and application thereof to lubricating grease |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204306XA CN102703168A (en) | 2012-06-20 | 2012-06-20 | Extreme pressure antiwear additive composition and application thereof to lubricating grease |
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| CN102703168A true CN102703168A (en) | 2012-10-03 |
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| CN201210204306XA Pending CN102703168A (en) | 2012-06-20 | 2012-06-20 | Extreme pressure antiwear additive composition and application thereof to lubricating grease |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020042348A1 (en) * | 1997-01-03 | 2002-04-11 | Mcneil Hugh A. | Engine, fuel, gear, and grease treatment compositions and methods related thereto |
| US6541427B1 (en) * | 1997-06-20 | 2003-04-01 | Fuchs Europe Schmierstoffe Gmbh & Co. Kg | Lubricant for maintenance-free cardan shafts |
-
2012
- 2012-06-20 CN CN201210204306XA patent/CN102703168A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020042348A1 (en) * | 1997-01-03 | 2002-04-11 | Mcneil Hugh A. | Engine, fuel, gear, and grease treatment compositions and methods related thereto |
| US6541427B1 (en) * | 1997-06-20 | 2003-04-01 | Fuchs Europe Schmierstoffe Gmbh & Co. Kg | Lubricant for maintenance-free cardan shafts |
Non-Patent Citations (1)
| Title |
|---|
| 姚俊兵: "润滑油脂抗磨极压添加剂研究进展", 《润滑油》 * |
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Owner name: TIANJIN DONGBAO LUBRICATE AXUNGE CO., LTD. Free format text: FORMER OWNER: JINBIN DONGBAO (TIANJIN) TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20131115 |
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Effective date of registration: 20131115 Address after: 300280 No. 3389 Hongqi Road, Dagang Oilfield, Tianjin Binhai New Area Applicant after: Tianjin Dongbao Lubricate Axunge Co., Ltd. Address before: 300280 No. 290, No. four, No. 1, Textile Economic Zone, Binhai New Area, Tianjin Applicant before: Jinbin Dongbao (Tianjin) Technology Development Co.,Ltd. |
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Application publication date: 20121003 |