CN102827671B - Antiwear lithium base grease composition - Google Patents
Antiwear lithium base grease composition Download PDFInfo
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- CN102827671B CN102827671B CN201210303680.5A CN201210303680A CN102827671B CN 102827671 B CN102827671 B CN 102827671B CN 201210303680 A CN201210303680 A CN 201210303680A CN 102827671 B CN102827671 B CN 102827671B
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- stearic acid
- base oil
- lithium soap
- grease
- soap
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Abstract
The invention relates to an antiwear lithium base grease composition which comprises the following components: 3.2 to 8.2 % of 12-OH lithium stearate soap, 0.8 to 2.0 % of lithium stearate soap, 89.0 to 95.8 % of mineral base oil containing high sulfur and 0.2 to 0.8 % of diphenylamine. The composition is characterized by using the mineral base oil containing high sulfur to prepare the ntiwear lithium base grease. The product has small diameter of wearing crack in four-ball testing and good anti-attrition effect, can effectively improve friction and wearing situations when machinery equipment runs, and can be used for lubrication of automobile, engineering machinery and other machinery equipment.
Description
Technical field
The invention belongs to technical field of lubricating grease, particularly relate to a kind of wear-resistant compound lithium base grease.
Background technology
Lubricating grease is a kind of viscosifying agent to be scattered in base oil, then add various additives and the semi-fluid that obtains to semi-solid paste.Its major function is anti-attrition, protection and sealing.In order to improve the antifriction effect of lubricating grease, normally in lubricating grease, add the organic or inorganic compound of various sulfur-bearings, phosphorus, molybdenum, lead and other elements, as sulfuration Oleum Gossypii semen, sulfide isobutene, tritolyl phosphate, molybdenumdisulphide, graphite, lead naphthenate etc.These compounds are all the wear preventive additives that are widely adopted in lubricating grease.
Improving the approach of lithium soap grease anti-attrition, is mainly to realize by add the anti-friction composition of various sulfur-bearings, phosphorus, boron, molybdenum, lead and other elements in lithium saponify at present both at home and abroad.But this compounds, when improving lubricating grease anti-attrition ability, also tends to band and serves side effect.As vulcanize Oleum Gossypii semen and make lithium soap grease structural stability variation, can increase minute oil mass of lubricating grease when using or store; Sulfide isobutene brings irritating smell to lubricating grease; Tritolyl phosphate, lead naphthenate etc. have certain toxicity, belong in the world the product that is progressively eliminated or limits use; Graphite, molybdenumdisulphide can make lithium soap grease be black, to product, bring certain pollution, affect apparent condition.In addition, add anti-friction composition also to increase to a certain extent the manufacturing cost of lubricating grease.
CN101096611A < < antifriction antiwear lubricating grease composition > >, proposition is utilizing calcium soap, calcium complex soap, soda soap, barium soap, compound barium soap, lithium soap, compound lithium soap, aluminium soap, compound aluminium soap, petroleum wax, wilkinite, polyureas, composite polyurea etc. to come in lubricating grease that the conventional base oil of multiviscosisty makes, by adding the nano titanium oxide of longer chain fatty acid or aliphatic amide finishing, obtain antifriction antiwear lubricating grease composition.
CN89109441.5 < < Antifrictional lithium-base composite grease > >, in the compositing lithio ester that has proposed to make in three kinds of acid such as hydroxy fatty acid, di-carboxylic acid and hydroxycarboxylic acid, add one group and contain composite additive anti-oxidant, antirust and raising oiliness, obtain Antifrictional lithium-base composite grease.
CN85100213 < < lithium base heavy-duty hyper-pressure lubricating grease > >, proposed in lithium saponify, add olefine sulfide oleum gossypii seminis, lead naphthenate, benzotriazole stearylamine, dibutyl dithiocaarbamate lead, dibutyl dithiocaarbamate oxygen moly-sulfide etc., obtain having the lubricating grease of wear-resistant, anti-extreme pressure and water repelling property.
The sliding グ リ of Te Open 2006-16459 < < Run ー ス Group becomes thing > >, proposed to use the lithium soap of lipid acid and hydroxy fatty acid, after mixing with Copoloid, the iron soap of a certain proportion of lipid acid and hydroxy fatty acid, by special process multiviscosisty base oil, obtain low-friction coefficient and there is the lubricating grease of good lubricity.
Lithium soap grease is by three kinds of colloidal dispersion systems that component forms such as lipid acid lithium soap, base oil and additives.By using various additives, improve the antifriction effect of lithium soap grease, be the technological method generally adopting both at home and abroad.But, utilize the mineral base oil of high sulfur content to prepare wear-resistant lithium soap grease, there is no open report.
Summary of the invention
Object of the present invention, is to provide a kind of wear-resistant compound lithium base grease of preparing with the mineral base oil of high sulfur content.In this composition, do not need to add the anti-friction composition that contains sulphur, phosphorus, boron, molybdenum, lead and other elements.
Wear-resistant compound lithium base grease provided by the invention, comprises lipid acid lithium soap viscosifying agent, high containing sulfur minerals base oil and amine antioxidants.Take composition gross weight as benchmark, and each component and percentage composition are:
(1) 12-OH stearic acid lithium soap 3.2～8.8%;
(2) stearic acid lithium soap 0.8～2.2%;
(3) high containing sulfur minerals base oil 88.2～95.8%;
(4) pentanoic 0.2～0.8%.
Preferred composition gross weight is benchmark, and each component concentration is:
(1) 12-OH stearic acid lithium soap 3.6～8.2%;
(2) stearic acid lithium soap 0.9～2.1%;
(3) high containing sulfur minerals base oil 89.0～95.2%;
(4) pentanoic 0.3～0.7%.
Said 12-OH stearic acid lithium soap is white powder industrial goods, also can be obtained by 12-OH stearic acid and equimolar monohydrate lithium hydroxide direct reaction.
Said stearic acid lithium soap is white powder industrial goods, also can be obtained by stearic acid and equimolar monohydrate lithium hydroxide direct reaction.
Said high containing sulfur minerals base oil, refers to sulphur content ≮ 0.25%, adopts oil reduced pressure distillate and the commercially available mineral base oil that obtain refining through sulfuric acid-carclazyte technique.100 ℃ of kinematic viscosity are 6.0～16.0mm
2/ s, preferably 7.0～14.0mm
2/ s.
Said pentanoic is commercially available industrial goods.
Production technique of the present invention is: 40.0～65.0% high containing sulfur minerals base oils are dropped in still, add 12-OH stearic acid lithium soap and stearic acid lithium soap, stir and heat up; When temperature is raised to 210～220 ℃, stop heating, keep temperature to stir 1～5min; To remain high containing sulfur minerals base oil and drop into quick cooling material in still, temperature adds pentanoic while reaching 140～150 ℃; Stir, can go out still.After grinding with three-roll grinder, obtain finished product.
Feature of the present invention, is to have adopted a kind of high-sulphur mineral base oil that has, and makes wear-resistant lithium soap grease.This lubricating grease can make full use of domestic existing base oil resource, can eliminate or improve the detrimentally affect that some anti-friction composition brings to PERFORMANCE OF GREASES simultaneously.The grinding defect diameter of this product four-ball test is little, and antifriction effect is good, and the friction and wear situation in the time of effectively improving mechanical means running, can also reduce LUBRICATING GREASES cost.Product of the present invention, can be used for the lubricated of automobile, engineering machinery and other mechanical means.
Embodiment
The raw material that embodiment adopts can be that industrial product or by product directly obtain, and also can obtain with following methods: as 12-OH stearic acid lithium soap is obtained by 12-OH stearic acid and equimolar monohydrate lithium hydroxide direct reaction; Stearic acid lithium soap is obtained by stearic acid and equimolar monohydrate lithium hydroxide direct reaction.Property of raw material is: high containing sulfur minerals base oil is sulphur content ≮ 0.25%, adopts oil reduced pressure distillate refining and obtain and kinematic viscosity is 6.0～16.0mm through sulfuric acid-carclazyte technique
2the commercially available mineral base oil of/s.Above-mentioned condition can realize the present invention in a word.
Example 1
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 6.8%;
(2) stearic acid lithium soap 1.7%;
(3) high containing sulfur minerals base oil 91.0%;
(4) pentanoic 0.5%.
By high containing sulfur minerals base oil (0.28%, 100 ℃ of kinematic viscosity 9.6mm of sulphur content
2/ s) 510g drops in still, adds 12-OH stearic acid lithium soap 68g, stearic acid lithium soap 17g.Heat up and stir, when temperature is raised to 210～220 ℃, stop heating, keep temperature 2min.Stirring adds high containing sulfur minerals base oil 400g, carries out chilling.Temperature adds pentanoic 5g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Example 2
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 8.0%;
(2) stearic acid lithium soap 2.0%;
(3) high containing sulfur minerals base oil 89.6%;
(4) pentanoic 0.4.
By high containing sulfur minerals base oil (0.26%, 100 ℃ of kinematic viscosity 11.2mm of sulphur content
2/ s) 500g drops in still, adds 12-OH stearic acid lithium soap 80g, stearic acid lithium soap 20g.Heat up and stir, when temperature is raised to 210～220 ℃, stop heating, keep temperature 3min.Stirring adds high containing sulfur minerals base oil 396g, carries out chilling.Temperature adds pentanoic 4g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Example 3
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 3.2%;
(2) stearic acid lithium soap 0.8%;
(3) high containing sulfur minerals base oil 95.8%;
(4) pentanoic 0.2%.
By high containing sulfur minerals base oil (0.25%, 100 ℃ of kinematic viscosity 6.0mm of sulphur content
2/ s) 383g drops in still, adds 12-OH stearic acid lithium soap 32g, stearic acid lithium soap 8g.Stir and heat up, when temperature is raised to 210～220 ℃, stop heating, keep temperature 5min.Stirring adds high containing sulfur minerals base oil 575g, carries out chilling.Temperature adds pentanoic 2g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Example 4
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 8.8%;
(2) stearic acid lithium soap 2.2%;
(3) high containing sulfur minerals base oil 88.2%;
(4) pentanoic 0.8%.
By high containing sulfur minerals base oil (0.29%, 100 ℃ of kinematic viscosity 16mm of sulphur content
2/ s) 573g drops in still, adds 12-OH stearic acid lithium soap 88g, stearic acid lithium soap 22g.Heat up and stir, when temperature is raised to 210～220 ℃, stop heating, keep temperature 3min.Stirring adds mineral base oil 309g, carries out chilling.Temperature adds pentanoic 8g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Example 5
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 3.6%;
(2) stearic acid lithium soap 0.9%;
(3) high containing sulfur minerals base oil 95.2%;
(4) pentanoic 0.3%.
By high containing sulfur minerals base oil (0.26%, 100 ℃ of kinematic viscosity 7.0mm of sulphur content
2/ s) 428g drops in still, adds 12-OH stearic acid lithium soap 36g, stearic acid lithium soap 9g.Heat up and stir, when temperature is raised to 210～220 ℃, stop heating, keep temperature 3min.Stirring adds high containing sulfur minerals base oil 524g, carries out chilling.Temperature adds pentanoic 3g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Example 6
Wear-resistant compound lithium base grease, component and mass percent are as follows:
(1) 12-OH stearic acid lithium soap 8.2%;
(2) stearic acid lithium soap 2.1%;
(3) high containing sulfur minerals base oil 89.0%;
(4) pentanoic 0.7%.
By high containing sulfur minerals base oil (0.31%, 100 ℃ of kinematic viscosity 14.0mm of sulphur content
2/ s) 520g drops in still, adds 12-OH stearic acid lithium soap 82g, stearic acid lithium soap 21g.Heat up and stir, when temperature is raised to 210～220 ℃, stop heating, keep temperature 1min.Stirring adds high containing sulfur minerals base oil 370g. to carry out chilling.Temperature adds pentanoic 7g in the time of 140～150 ℃.Stir.Go out still, grind three times.The performance of gained lubricating grease is listed in to table 1.
Comparative example 1
For No. 3 commercially available lithium soap greases, by lipid acid lithium soap, common mineral base oil etc., made.Its performance is listed in to table 1.
Comparative example 2
For No. 00 commercially available lithium soap grease, by lipid acid lithium soap, common mineral base oil etc., made.Its performance is listed in to table 1.
Comparative example 3
No. 2 wear-resistant lithium soap greases for commercially available graphitiferous.Its performance is listed in to table 1.
Table 1
The wear-resistant performance of lubricating grease can adopt the SH/T wear-resistant performance measurement method of 0204 < < lubricating grease (four-ball tester method) > > to judge.Test conditions is revolution 1200r/min, load 392N, time 60min.After off-test, measure the grinding defect diameter of steel ball, and with the size of grinding defect diameter, judge the quality of the wear-resistant performance of lubricating grease.Grinding defect diameter is little, and abrasion resistance is good; And grinding defect diameter is large, show that abrasion resistance is poor.Known by table 1: with commercially available No. 3 and No. 00 lithium soap grease comparison, the product four-ball test grinding defect diameter that the present invention obtains is less.This abrasion resistance that shows that the present invention obtains product is better than commercially available No. 3 and No. 00 universal lithium base grease.The present invention obtains product and No. 2 wear-resistant lithium soap grease comparisons commercially available graphitiferous, and four ball grinding defect diameters approach, and show that both have suitable abrasion resistance.In a word, the present invention obtains wear-resistant lithium soap grease, and the grinding defect diameter of four-ball test is little, and antifriction effect is good, friction, abrasive conditions in the time of effectively improving mechanical means running.Product of the present invention, can be used for the lubricated of automobile, engineering machinery and other mechanical means.
Claims (3)
1. a wear-resistant compound lithium base grease, is characterized in that take that composition gross weight is as benchmark, each component percentage composition:
(1) 12-OH stearic acid lithium soap 3.2～8.8%;
(2) stearic acid lithium soap 0.8～2.2%;
(3) high containing sulfur minerals base oil 88.2～95.8%;
(4) pentanoic 0.2～0.8%;
Described high containing sulfur minerals base oil is to adopt oil reduced pressure distillate refine and obtain through sulfuric acid-carclazyte technique, and sulphur content ≮ 0.25%, and 100 ℃ of kinematic viscosity are 6.0～16.0mm
2/ s.
2. a kind of wear-resistant compound lithium base grease claimed in claim 1, is characterized in that take that composition gross weight is as benchmark, each component percentage composition:
(1) 12-OH stearic acid lithium soap 3.6～8.2%;
(2) stearic acid lithium soap 0.9～2.1%;
(3) high containing sulfur minerals base oil 89.0～95.2%;
(4) pentanoic 0.3～0.7%.
3. composition as claimed in claim 1 or 2 is for comprising the lubricated purposes of the mechanical means of automobile, engineering machinery.
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| CN201210303680.5A CN102827671B (en) | 2012-08-23 | 2012-08-23 | Antiwear lithium base grease composition |
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|---|---|---|---|
| CN201210303680.5A CN102827671B (en) | 2012-08-23 | 2012-08-23 | Antiwear lithium base grease composition |
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| CN102827671B true CN102827671B (en) | 2014-04-30 |
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| CN104830406A (en) * | 2015-05-14 | 2015-08-12 | 新乡市恒星化工有限责任公司 | Special lubricating grease for Raymond mill and preparation method of special lubricating grease |
| CN105542915A (en) * | 2015-12-23 | 2016-05-04 | 中山大学惠州研究院 | Super-fining treatment method of lubricating material |
| CN112608780B (en) * | 2020-12-07 | 2022-07-19 | 武汉博达特种润滑技术有限公司 | Low-odor automobile lubricating grease composition and preparation method thereof |
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