CN105154195A - Extreme pressure complex grease composition - Google Patents
Extreme pressure complex grease composition Download PDFInfo
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- CN105154195A CN105154195A CN201510530155.0A CN201510530155A CN105154195A CN 105154195 A CN105154195 A CN 105154195A CN 201510530155 A CN201510530155 A CN 201510530155A CN 105154195 A CN105154195 A CN 105154195A
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- extreme pressure
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- selenium powder
- mineral oil
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Abstract
The invention discloses an extreme pressure complex grease composition, comprising, by weight, 93-97% of basic grease, 0.5-2% of an antioxidant, 0.5-2% of an anti-wear agent, 0.5-1% of a copper corrosion inhibitor, and 1-3% of an extreme pressure agent. The basic grease is made by: stirring and reacting mineral oil and a thickening agent at 90-110 DEG C for 2-3h, dewatering a reaction product at 150-170 DEG C for 2-3h, reacting a dewatering product at 200-210 DEG C for 0.5-1h, cooling a reaction product to 90 DEG C, and grinding a cooling product via a three-roll grinder. The extreme pressure agent is selenium powder. The selenium powder is used as the extreme pressure agent for the first time that has excellent extreme pressure performance, and the defects that a traditional extreme pressure agent has strong smell and may corrode a friction pair are overcome.
Description
Technical field
The present invention relates to a kind of extreme pressure compound lithium base grease composition, belong to technical field of lubricating grease.
Background technology
Complex lithium grease (complexlithiumgrease) is by the compound lithium soap multiviscosisty base oil of hydroxy fatty acid lithium soap and low molecular acid lithium salts composition generation and adds lubricating grease prepared by additive, there is excellent high-temperature behavior, may be used for multiple fields such as automobile, iron and steel, railway, aviation, is a kind of multiple-effect, long-life lubricating grease.
Usually the extreme pressure anti-wear additives being applied to lubricating grease comprises the materials such as some sulfocompounds (sulfide isobutene, polysulfide), P contained compound (phosphoric acid ester, phosphorous acid ester), nano boric acid salt.A kind of grease composition as patent CN104053758A report improves lubricating grease extreme pressure property by adding sulfide aliphatic acid ester, and active sulphur content accounts for more than 0.18% of grease composition, and sintering load can reach 400Kg.Patent CN101649243B reports a kind of high/low temperature lubricating grease and preparation method thereof, and using sulfide isobutene, tritolyl phosphate, di-n-butyl phosphite as extreme pressure anti-wear additives, sintering load is 4000N.Patent CN101705143B reports a kind of high-extreme pressure water-resistant antirust lubricating grease and preparation method thereof, and using dialkyl dithiocarbamate as extreme pressure anti-wear additives, simultaneously with antioxygen, erosion-resisting effect, sintering load is 3920N.Patent CN101575548B reports universal joint special grease and preparation method thereof, and using borate and P contained compound as extreme pressure anti-wear additives, gained lubricating grease extreme pressure property is excellent, and sintering load reaches more than 400Kg.Patent CN102250671B reports the high extreme pressure compound lithium grease composition of a kind of wide temperature, using at least one in dialkyl dithiocarbamate, zinc dialkyl dithiophosphate, boric acid ester, thiophosphatephosphorothioate as extreme pressure anti-wear additives, the sintering load of gained lubricating grease is 3089N.
We can find out in existing invention, are mostly using the organic compound containing S, P, B isoreactivity element as extreme pressure anti-wear additives, and there is not been reported in the application that our literature survey shows using selenium powder as extreme pressure anti-wear additives.
Summary of the invention
The object of the present invention is to provide a kind of extreme pressure compound lithium base grease composition, the component that said composition comprises and weight percent are: basic fat 93 ~ 97%, oxidation inhibitor 0.5 ~ 2%, anti-wear agent 0.5 ~ 2%, copper corrosion inhibitor 0.5 ~ 1%, extreme pressure agent 1 ~ 3%; Described basic fat is with mineral oil, viscosifying agent at 90-110 DEG C of stirring reaction 2-3h, is cooled to 90 DEG C, grinds to form fat after 150-170 DEG C of dehydration 2-3h, 200-210 DEG C of reaction 0.5-1h; Described extreme pressure agent is selenium powder.
The consumption of described mineral oil and viscosifying agent is respectively 90 ~ 94%, 6 ~ 10% of both total masses.
Described mineral oil is 150BS base oil.
Described viscosifying agent by mol ratio be the 12-oxystearic acid of 1:0.5:2, sebacic acid and LiOH form.
Described oxidation inhibitor is 2,6 ditertiary butyl p cresol or dinonyldiphenylamine.
Described anti-wear agent is DHP dihexylphosphoric acid ester amine salt.
Described copper corrosion inhibitor is 2,5-dimercapto-1,3,4-thiadiazole.
The purity of described selenium powder is greater than 99%.
The present invention compared with prior art has the following advantages:
Organic compounds containing sulfur (sulfide isobutene, polysulfide) etc. is different as extreme pressure agent from using in prior art, the present invention uses selenium powder as lubricating grease extreme pressure agent first, not only there is excellent extreme pressure property, overcome the shortcomings such as traditional extreme pressure agent smell is heavy, corrosion friction pair simultaneously, there is higher practical value.
Embodiment
Embodiment 1
150BS92g, viscosifying agent 8g, water 10g are added with in churned mechanically 250mL there-necked flask, is warming up to 95 DEG C of stirring reaction 2h, be then warming up to 160 DEG C and stir 2h dehydration, be warming up to 210 DEG C of reaction 30min again, be cooled to 90 DEG C, be transferred to three-roll grinder and grind to form fat, based on fat A.
Embodiment 2
Get basic fat A97g, add 2,5-dimercapto-1,3,4-thiadiazole 0.5g, 2,6 ditertiary butyl p cresol 0.5g, DHP dihexylphosphoric acid ester amine salt 1g, selenium powder 1g, be heated to 90 DEG C and stir 30min to evenly, be transferred to three-roll grinder grinding evenly, obtain composition B.
Embodiment 3
Get basic fat A95g, add 2,5-dimercapto-1,3,4-thiadiazole 0.5g, 2,6 ditertiary butyl p cresol 2g, DHP dihexylphosphoric acid ester amine salt 0.5g, selenium powder 2g, be heated to 90 DEG C and stir 30min to evenly, be transferred to three-roll grinder grinding evenly, obtain composition C.
Embodiment 4
Get basic fat A96g, add 2,5-dimercapto-1,3,4-thiadiazole 0.5g, dinonyldiphenylamine 0.5g, DHP dihexylphosphoric acid ester amine salt 2g, selenium powder 1g, be heated to 90 DEG C and stir 30min, being transferred to three-roll grinder grinding subsequently evenly, is the finished product D.
Embodiment 5
Get basic fat A93g, add 2,5-dimercapto-1,3,4-thiadiazole 1g, dinonyldiphenylamine 2g, DHP dihexylphosphoric acid ester amine salt 2g, selenium powder 3g, be heated to 90 DEG C and stir 30min, being transferred to three-roll grinder grinding subsequently evenly, is the finished product E.
The performance test results of table 1 embodiment product
1test conditions: 1450rpm, 392N, 30min, room temperature.
As can be seen from the test results, four ball sintering loads of the compound lithium base grease composite containing selenium powder, all at more than 620Kg, show that prepared lubricating grease has excellent extreme pressure property.
Claims (8)
1. an extreme pressure compound lithium base grease composition, is characterized in that the component that said composition comprises and weight percent are: basic fat 93 ~ 97%, oxidation inhibitor 0.5 ~ 2%, anti-wear agent 0.5 ~ 2%, copper corrosion inhibitor 0.5 ~ 1%, extreme pressure agent 1 ~ 3%; Described basic fat is with mineral oil, viscosifying agent at 90-110 DEG C of stirring reaction 2-3h, is cooled to 90 DEG C, grinds to form fat after 150-170 DEG C of dehydration 2-3h, 200-210 DEG C of reaction 0.5-1h; Described extreme pressure agent is selenium powder.
2. composition as claimed in claim 1, is characterized in that the consumption of described mineral oil and viscosifying agent is respectively 90 ~ 94%, 6 ~ 10% of both total masses.
3. composition as claimed in claim 1 or 2, is characterized in that described mineral oil is 150BS base oil.
4. composition as claimed in claim 1 or 2, it is characterized in that described viscosifying agent by mol ratio be the 12-oxystearic acid of 1:0.5:2, sebacic acid and LiOH form.
5. composition as claimed in claim 1, is characterized in that described oxidation inhibitor is 2,6 ditertiary butyl p cresol or dinonyldiphenylamine.
6. composition as claimed in claim 1, is characterized in that described anti-wear agent is DHP dihexylphosphoric acid ester amine salt.
7. composition as claimed in claim 1, is characterized in that described copper corrosion inhibitor is 2,5-dimercapto-1,3,4-thiadiazole.
8. composition as claimed in claim 1, is characterized in that the purity of described selenium powder is greater than 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510530155.0A CN105154195B (en) | 2015-08-27 | 2015-08-27 | A kind of extreme pressure compound lithium base grease composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510530155.0A CN105154195B (en) | 2015-08-27 | 2015-08-27 | A kind of extreme pressure compound lithium base grease composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105154195A true CN105154195A (en) | 2015-12-16 |
| CN105154195B CN105154195B (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510530155.0A Active CN105154195B (en) | 2015-08-27 | 2015-08-27 | A kind of extreme pressure compound lithium base grease composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937088A (en) * | 2017-11-15 | 2018-04-20 | 清华大学 | Lubricating grease and preparation method thereof |
| CN111979029A (en) * | 2020-09-09 | 2020-11-24 | 中国科学院兰州化学物理研究所 | Composite lithium-based thickening agent, lubricating grease prepared from composite lithium-based thickening agent and preparation method of lubricating grease |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197838A (en) * | 1997-04-09 | 1998-11-04 | 中国石油化工总公司 | Lubricating grease for gear box in nuclear power station |
| CN101993769A (en) * | 2010-11-25 | 2011-03-30 | 无锡中石油润滑脂有限责任公司 | Complex lithium base grease and preparation method thereof |
| CN102226123A (en) * | 2011-05-16 | 2011-10-26 | 卓建材 | Dry type lubricant without containing grease, its mother liquor and its preparation method |
| CN102923777A (en) * | 2012-11-08 | 2013-02-13 | 镇江中孚复合材料有限公司 | Preparation method of six-square-piece shaped selenium doping disulfide niobium |
-
2015
- 2015-08-27 CN CN201510530155.0A patent/CN105154195B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197838A (en) * | 1997-04-09 | 1998-11-04 | 中国石油化工总公司 | Lubricating grease for gear box in nuclear power station |
| CN101993769A (en) * | 2010-11-25 | 2011-03-30 | 无锡中石油润滑脂有限责任公司 | Complex lithium base grease and preparation method thereof |
| CN102226123A (en) * | 2011-05-16 | 2011-10-26 | 卓建材 | Dry type lubricant without containing grease, its mother liquor and its preparation method |
| CN102923777A (en) * | 2012-11-08 | 2013-02-13 | 镇江中孚复合材料有限公司 | Preparation method of six-square-piece shaped selenium doping disulfide niobium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937088A (en) * | 2017-11-15 | 2018-04-20 | 清华大学 | Lubricating grease and preparation method thereof |
| CN107937088B (en) * | 2017-11-15 | 2021-01-26 | 清华大学 | Lubricating grease and preparation method thereof |
| CN111979029A (en) * | 2020-09-09 | 2020-11-24 | 中国科学院兰州化学物理研究所 | Composite lithium-based thickening agent, lubricating grease prepared from composite lithium-based thickening agent and preparation method of lubricating grease |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105154195B (en) | 2018-07-10 |
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