CN102311846B - High-temperature-resistant universal extreme-pressure grease lubricant and preparation method thereof - Google Patents
High-temperature-resistant universal extreme-pressure grease lubricant and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-temperature-resistant universal extreme-pressure grease lubricant and a preparation method thereof. The grease lubricant is prepared by taking petroleum calcium sulfonate, base oil, glacial acetic acid, dodecahydroxyl stearic acid, boric acid, calcium hydroxide and arylamine antioxidant as raw materials and utilizing a simpler production process; the production process has fewer procedures and lower production cost, and the production efficiency is improved; meanwhile, the grease lubricant has a stronger commonality while being applied and the grease lubricant can be applied to the fields with higher requirements on temperature, precision and bearing capability; the grease lubricant is stable in lubrication performance and longer in use period. The commonality of the grease lubricant provided by the invention is improved and the type of product is specially researched.
Description
Technical field
Required lubricant medium of machinery and preparation method thereof, particularly lubricating grease that a kind of versatility is stronger and preparation method thereof the present invention relates to turn round.
Background technology
Lubricating grease is compared with thin oil lubricant as lubricant medium commonly used has stability and anti-oxidation characteristics preferably, is suitable for the kinematic accuracy height, supporting capacity requires in the movable machinery high, that rotating speed is high and the drain period is long; Particularly in the micromachine bearing higher to running accuracy, supporting capacity and noise requirements, lubricating grease obtains using more widely.The lubricating grease of composite sulfoacid calcium soap type is the class new type high temperature multipurpose grease that last century, the mid-80 grew up, and it has the excellent comprehensive performance, thereby has stronger universal performance, has caused to pay attention to widely and close concern.But, the grease lubrication less stable of composite sulfoacid calcium soap type of the prior art, resistance to elevated temperatures is relatively poor; Though, can be applied to that temperature, supporting capacity and lubricity are had many-sided occasion that requires, but, in the occasion of having relatively high expectations for temperature and supporting capacity, then needing has special lubricating grease, just, the lubricating grease of existing composite sulfoacid calcium soap type also has uncertainty, product performance instability on versatility; And, the LUBRICATING GREASES technology more complicated of existing composite sulfoacid calcium soap type, production cost height.
Therefore, need the stronger lubricating grease of a kind of versatility, have comparatively simple production technique, operation is less, and production cost is lower, enhance productivity, simultaneously, have stronger versatility during the control grease applications, be suitable for the applications that temperature, precision and supporting capacity are had relatively high expectations, lubricity is stable, and life cycle is longer.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of high temperature resistant omnipotent extreme pressure grease and preparation method thereof, have comparatively simple production technique, operation is less, and production cost is lower, enhance productivity, simultaneously, have stronger versatility during the control grease applications, be suitable for the applications that temperature, precision and supporting capacity are had relatively high expectations, lubricity is stable, and life cycle is longer.
High temperature resistant omnipotent extreme pressure grease of the present invention, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 20-65%, base oil 30-77%, glacial acetic acid 0.2-1.5%, ten dihydroxystearic acid 0.1-10%, boric acid 0.5-5%, calcium hydroxide 2-10% and arylamine antioxidant 0.1-1%;
Described base oil is one or more the mixture in paraffinic base, cycloalkyl and the intermediate base lubricating oil of deep refining, and the kinematic viscosity in the time of 100 ℃ is between the 20-60 centistoke, and open flash point is between 180-300 ℃, and pour point is between-30-0 ℃; The total basicnumber of calcium mahogany sulfonate is at 380-420.
Further, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 31.5%, base oil 50%, glacial acetic acid 1%, ten dihydroxystearic acids 8%, boric acid 3%, calcium hydroxide 6% and arylamine antioxidant 0.5%;
Kinematic viscosity during 100 ℃ of described base oils is at 40 centistokes, and open flash point is at 240 ℃, and pour point is at 0 ℃; The total basicnumber of calcium mahogany sulfonate is 400.
The invention also discloses a kind of preparation method of high temperature resistant omnipotent extreme pressure grease, may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed 10-20: 1 mixed, and heat temperature raising obtains the non-newtonian fluid high alkaline calcium sulfonate to 30-100 ℃ of carbonization; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with water by 5-10: 1 mixed, take by weighing calcium hydroxide and water by weight percentage by 0.5-1: 1 mixed forms suspension, mix to be incorporated in 80-120 ℃ of reaction and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add arylamine antioxidant at last.
Further, among the step a, the mixture of calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and water are pressed 15: 1 mixed, and heat temperature raising to 80 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate;
Further, among the step b, boric acid and water are pressed 8: 1 mixed, and calcium hydroxide and water form suspension by 0.8: 1 mixed, mix being incorporated in 100 ℃ of reactions with ten dihydroxyl lipid acid and remaining base oil.
The invention has the beneficial effects as follows: high temperature resistant omnipotent extreme pressure grease of the present invention and preparation method thereof, adopt comparatively simple production technique, operation is less, production cost is lower, enhances productivity, simultaneously, has stronger versatility during the control grease applications, be suitable for applications that temperature, precision and supporting capacity are had relatively high expectations, lubricity is stable, and life cycle is longer.Improve the versatility of product, special development the type product.
Embodiment
Embodiment one
The high temperature resistant omnipotent extreme pressure grease of present embodiment, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 31.5%, base oil 50%, glacial acetic acid 1%, ten dihydroxystearic acids 8%, boric acid 3%, calcium hydroxide 6% and arylamine antioxidant 0.5%; Wherein the raw material arylamine antioxidant is directly obtained by outsourcing;
Base oil in the present embodiment is the mixture of paraffinic base, cycloalkyl and the intermediate base lubricating oil arbitrary proportion of deep refining, and the kinematic viscosity in the time of 100 ℃ is at 40 centistokes, and open flash point is at 240 ℃, and pour point is at 0 ℃; The total basicnumber of calcium mahogany sulfonate is 400.
The preparation method of the high temperature resistant omnipotent extreme pressure grease of present embodiment may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed 15: 1 mixed, and heat temperature raising to 80 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with the mixed of water by 8: 1, take by weighing calcium hydroxide and water by weight percentage and form suspension by 0.8: 1 mixed, mix to be incorporated in 100 ℃ of reactions and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add the arylamine antioxidant of determining percentage composition at last.
Relatively seeing the following form of the lubricating grease of present embodiment and the calcium sulfonate complex grease of prior art:
This shows, lubricating grease of the present invention all substantially exceeds the complex calcium sulfonate grease of prior art in every performance index, have resist high temperature preferably, the utmost point carries and resistance to corrosion, thereby has stability preferably, work-ing life is longer, saves use cost.
Embodiment two
The high temperature resistant omnipotent extreme pressure grease of present embodiment, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 20%, base oil 77%, glacial acetic acid 0.3%, ten dihydroxystearic acids 0.1%, boric acid 0.5%, calcium hydroxide 2% and arylamine antioxidant 0.1%; Wherein the raw material arylamine antioxidant is directly obtained by outsourcing;
Base oil in the present embodiment is the mixture of paraffinic base, cycloalkyl and the intermediate base lubricating oil arbitrary proportion of deep refining, and the kinematic viscosity in the time of 100 ℃ is at 20 centistokes, and open flash point is at 180 ℃, and pour point is at-30 ℃; The total basicnumber of calcium mahogany sulfonate is 380.
The preparation method of the high temperature resistant omnipotent extreme pressure grease of present embodiment may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed 10: 1 mixed, and heat temperature raising to 30 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with the mixed of water by 5: 1, take by weighing calcium hydroxide and water by weight percentage and form suspension by 0.5: 1 mixed, mix to be incorporated in 80 ℃ of reactions and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add the arylamine antioxidant of determining percentage composition at last.
Relatively seeing the following form of the lubricating grease of present embodiment and the calcium sulfonate complex grease of prior art:
This shows, lubricating grease of the present invention all substantially exceeds the complex calcium sulfonate grease of prior art in every performance index, have resist high temperature preferably, the utmost point carries and resistance to corrosion, thereby has stability preferably, work-ing life is longer, saves use cost.
Embodiment three
The high temperature resistant omnipotent extreme pressure grease of present embodiment, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 65%, base oil 30%, glacial acetic acid 0.2%, ten dihydroxystearic acids 1%, boric acid 0.8%, calcium hydroxide 2% and arylamine antioxidant 1%; Wherein the raw material arylamine antioxidant is directly obtained by outsourcing;
Base oil in the present embodiment is the paraffin base lubricating oil of deep refining, and the kinematic viscosity in the time of 100 ℃ is at 60 centistokes, and open flash point is at 300 ℃, and pour point is at-10 ℃; The total basicnumber of calcium mahogany sulfonate is 380.
The preparation method of the high temperature resistant omnipotent extreme pressure grease of present embodiment may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed 20: 1 mixed, and heat temperature raising to 100 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with the mixed of water by 10: 1, take by weighing calcium hydroxide and water by weight percentage and form suspension by 1: 1 mixed, mix to be incorporated in 120 ℃ of reactions and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add the arylamine antioxidant of determining percentage composition at last.
Relatively seeing the following form of the lubricating grease of present embodiment and the calcium sulfonate complex grease of prior art:
This shows, lubricating grease of the present invention all substantially exceeds the complex calcium sulfonate grease of prior art in every performance index, have resist high temperature preferably, the utmost point carries and resistance to corrosion, thereby has stability preferably, work-ing life is longer, saves use cost.
Embodiment four
The high temperature resistant omnipotent extreme pressure grease of present embodiment, raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 32.5%, base oil 40%, glacial acetic acid 1.5%, ten dihydroxystearic acids 10%, boric acid 5%, calcium hydroxide 10% and arylamine antioxidant 1%; Wherein the raw material arylamine antioxidant is directly obtained by outsourcing;
Base oil in the present embodiment is the mixture of the intermediate base lubricating oil arbitrary proportion of deep refining, and the kinematic viscosity in the time of 100 ℃ is at 60 centistokes, and open flash point is at 300 ℃, and pour point is at-10 ℃; The total basicnumber of calcium mahogany sulfonate is 380.
The preparation method of the high temperature resistant omnipotent extreme pressure grease of present embodiment may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed 20: 1 mixed, and heat temperature raising to 100 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with the mixed of water by 10: 1, take by weighing calcium hydroxide and water by weight percentage and form suspension by 1: 1 mixed, mix to be incorporated in 120 ℃ of reactions and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add the arylamine antioxidant of determining percentage composition at last.
Relatively seeing the following form of the lubricating grease of present embodiment and the calcium sulfonate complex grease of prior art:
This shows, lubricating grease of the present invention all substantially exceeds the complex calcium sulfonate grease of prior art in every performance index, have resist high temperature preferably, the utmost point carries and resistance to corrosion, thereby has stability preferably, work-ing life is longer, saves use cost.
In the present embodiment, intermediate base lubricating oil is replaced with naphthenic lube oil, the lubricating grease that draws does not have material alterations in nature parameters.
The paraffinic base of above-mentioned deep refining, cycloalkyl, intermediate base lubricating oil and polyalphaolefin synthetic oil all directly obtain by outsourcing, and the said products of selling on the market all can reach service requirements under the prerequisite of control character.
This shows, the lubricating grease that the present invention makes is used for the stronger occasion of high temperature, extreme pressure and corrodibility and has bigger advantage than the complex calcium sulfonate grease of prior art, and for above technique effect, the proportioning of embodiment one and processing parameter, result of use is best, obviously be better than other embodiment, be the best.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. high temperature resistant omnipotent extreme pressure grease, it is characterized in that: raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 20-65%, base oil 30-77%, glacial acetic acid 0.2-1.5%, ten dihydroxystearic acid 0.1-10%, boric acid 0.5-5%, calcium hydroxide 2-10% and arylamine antioxidant 0.1-1%;
Described base oil is more than one the mixture in paraffinic base, cycloalkyl and the intermediate base lubricating oil of deep refining, and the kinematic viscosity in the time of 100 ℃ is between the 20-60 centistoke, and open flash point is between 180-300 ℃, and pour point is between 0 ℃ of-30-; The total basicnumber of calcium mahogany sulfonate is at 380-420.
2. high temperature resistant omnipotent extreme pressure grease according to claim 1, it is characterized in that: raw material for lubricating grease comprises following component by weight percentage: calcium mahogany sulfonate 31.5%, base oil 50%, glacial acetic acid 1%, ten dihydroxystearic acids 8%, boric acid 3%, calcium hydroxide 6% and arylamine antioxidant 0.5%;
Kinematic viscosity during 100 ℃ of described base oils is at 40 centistokes, and open flash point is at 240 ℃, and pour point is at 0 ℃; The total basicnumber of calcium mahogany sulfonate is 400.
3. the preparation method of the described high temperature resistant omnipotent extreme pressure grease of claim 1 is characterized in that: may further comprise the steps:
A. take by weighing calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and mixing by weight percentage, this mixture and water are pressed the mixed of 10-20:1, and heat temperature raising obtains the non-newtonian fluid high alkaline calcium sulfonate to 30-100 ℃ of carbonization; Described base oil addition is 50% of base oil total amount;
B. take by weighing by weight percentage boric acid and with the mixed of water by 5-10:1, take by weighing calcium hydroxide and water by weight percentage by the mixed formation suspension of 0.5-1:1, mix to be incorporated in 80-120 ℃ of reaction and to obtain lubricating grease with ten dihydroxyl lipid acid and remaining base oil, add arylamine antioxidant at last.
4. the preparation method of high temperature resistant omnipotent extreme pressure grease according to claim 3, it is characterized in that: among the step a, the mixture of calcium mahogany sulfonate, calcium hydroxide, base oil and glacial acetic acid and water are pressed the mixed of 15:1, heat temperature raising to 80 ℃ carbonization obtains the non-newtonian fluid high alkaline calcium sulfonate.
5. the preparation method of high temperature resistant omnipotent extreme pressure grease according to claim 3, it is characterized in that: among the step b, boric acid and water are pressed the mixed of 8:1, the mixed that calcium hydroxide and water are pressed 0.8:1 forms suspension, mixes being incorporated in 100 ℃ of reactions with ten dihydroxyl lipid acid and remaining base oil.
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| CN 201110105621 CN102311846B (en) | 2011-04-26 | 2011-04-26 | High-temperature-resistant universal extreme-pressure grease lubricant and preparation method thereof |
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| CN 201110105621 CN102311846B (en) | 2011-04-26 | 2011-04-26 | High-temperature-resistant universal extreme-pressure grease lubricant and preparation method thereof |
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| CN102311846B true CN102311846B (en) | 2013-07-03 |
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| CN103122266B (en) * | 2012-12-25 | 2014-03-05 | 乌鲁木齐市隆成实业有限公司 | Composite calcium-sulfonate-base lubricating grease and preparation method thereof |
| CN107287004A (en) * | 2016-04-12 | 2017-10-24 | 南京精锐化工科技有限公司 | A kind of efficient and environment-friendly type complex calcium sulfonate grease and preparation method thereof |
| CN107418686A (en) * | 2017-08-23 | 2017-12-01 | 丁伟 | Calcium base lubricating agent constituent |
| CN107523407A (en) * | 2017-08-23 | 2017-12-29 | 丁伟 | The processing method of calcium base lubricating agent constituent |
| CN110951531A (en) * | 2019-12-12 | 2020-04-03 | 无锡科捷化学有限公司 | Method for preparing composite calcium sulfonate-based lubricating grease |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705140A (en) * | 2009-11-09 | 2010-05-12 | 鞍山海华油脂化学有限公司 | High-temperature grease and preparation method thereof |
| CN101705143A (en) * | 2009-11-09 | 2010-05-12 | 鞍山海华油脂化学有限公司 | High-extreme pressure water-resistant antirust lubricating grease and preparation method thereof |
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| US8716200B2 (en) * | 2006-09-13 | 2014-05-06 | Ecolab Usa Inc. | Conveyor lubricants including emulsion of a lipophilic compound and an emulsifier and/or an anionic surfactant and methods employing them |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705140A (en) * | 2009-11-09 | 2010-05-12 | 鞍山海华油脂化学有限公司 | High-temperature grease and preparation method thereof |
| CN101705143A (en) * | 2009-11-09 | 2010-05-12 | 鞍山海华油脂化学有限公司 | High-extreme pressure water-resistant antirust lubricating grease and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 水和温度对极压抗磨剂在复合锂基润滑脂中摩擦学性能的影响;马文全等;《兰州石化职业技术学院学报》;20100630;第10卷(第2期);第11-13页 * |
| 马文全等.水和温度对极压抗磨剂在复合锂基润滑脂中摩擦学性能的影响.《兰州石化职业技术学院学报》.2010,第10卷(第2期),第11-13页. |
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Address after: Guangdong Province, Dongguan City Industrial Road 523808 Songshan Lake Science and Technology Industrial Park No. 6 Patentee after: AMER LUBRICANT TECHNOLOGY CO., LTD. Address before: 523808 Guangdong province Dongguan City Songshan Lake Science and Technology Industrial Park Road No. 6 Patentee before: Dongguan Amer Lubricant Technology Co., Ltd. |