CN114369487A - High-temperature-resistant long-life lubricating grease and preparation method thereof - Google Patents
High-temperature-resistant long-life lubricating grease and preparation method thereof Download PDFInfo
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- CN114369487A CN114369487A CN202210039723.7A CN202210039723A CN114369487A CN 114369487 A CN114369487 A CN 114369487A CN 202210039723 A CN202210039723 A CN 202210039723A CN 114369487 A CN114369487 A CN 114369487A
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- Prior art keywords
- grease
- base oil
- lubricating grease
- antioxidant
- resistant long
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- 239000004519 grease Substances 0.000 title claims abstract description 60
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000002199 base oil Substances 0.000 claims abstract description 31
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- -1 alkyl poly benzyl toluene derivative Chemical class 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000002562 thickening agent Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 239000000344 soap Substances 0.000 claims description 7
- 150000001492 aromatic hydrocarbon derivatives Chemical class 0.000 claims description 5
- DMBHHRLKUKUOEG-UHFFFAOYSA-N N-phenyl aniline Natural products C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- HOGQKPKMJVCDRN-UHFFFAOYSA-M lithium 2,2,3,3,4,4,5,5,6,6,7,7-dodecahydroxyoctadecanoate Chemical compound OC(C(C(C(C(C(C(=O)[O-])(O)O)(O)O)(O)O)(O)O)(O)O)(CCCCCCCCCCC)O.[Li+] HOGQKPKMJVCDRN-UHFFFAOYSA-M 0.000 claims description 4
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005727 Friedel-Crafts reaction Methods 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N para-hydroxytoluene Natural products CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 11
- 238000007254 oxidation reaction Methods 0.000 abstract description 11
- 230000006698 induction Effects 0.000 abstract description 3
- 229920013639 polyalphaolefin Polymers 0.000 description 7
- 238000002156 mixing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic compounds
- C10M2203/045—Well-defined cycloaliphatic compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a high-temperature-resistant long-life lithium-based lubricating grease and a preparation method thereof, wherein the high-temperature-resistant long-life lithium-based lubricating grease comprises the following components in percentage by mass: 50% -80% of base oil; 10% -20% of thickening agent; 2-10% of extreme pressure antiwear agent; 1% -5% of antioxidant; 0.1% -2% of anticorrosive agent; 0.5 to 5 percent of viscosity improver; wherein the sum of the mass percentages of the components is 100%. The high-temperature-resistant long-life lubricating grease and the preparation method thereof have the following advantages: after the antioxidant additive alkyl poly benzyl toluene derivative is added into the lubricating grease, the oxidation induction period of the lubricating grease is longer, which shows that the lubricating grease has better oxidation stability and better extreme pressure performance.
Description
Technical Field
The invention relates to lubricating grease, in particular to high-temperature-resistant long-life lubricating grease and a preparation method thereof.
Background
At present, the rapid development of modern industry has increasingly stringent requirements on the performance of lubricating grease, and the lubricating grease is required to have the characteristics of high quality, good performance and long service life. At present, lithium-based lubricating grease is most widely applied in China, generally can be used for a long time at a temperature of below 130 ℃ and for a short time at a temperature of below 150 ℃, and has the characteristics of good economy, wide application range and the like compared with other lubricating grease.
The oxidation stability of the lubricating grease is used as an important evaluation index of the quality and the service life of the lubricating grease, the main influencing factors of the oxidation stability and the high-temperature stability of the lubricating grease are base oil, antioxidant and soap base type, and the base oil is generally selected from paraffin base oil and synthetic hydrocarbon base oil with high viscosity index and good high-temperature performance. In addition, the antioxidant can greatly improve the high-temperature stability and oxidation stability of the lubricating grease, and the high-temperature lubricating grease mainly comprises lithium complex lubricating grease, calcium complex sulfonate lubricating grease, polyurea lubricating grease and the like. The lithium grease has the widest market application and the largest output, but the high-temperature oxidation performance of the lithium grease is poorer than that of polyurea grease and composite calcium sulfonate grease, and the improvement of the oxidation stability of the lithium grease has important significance.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides high-temperature-resistant long-life lubricating grease and a preparation method thereof.
The technical problem of the invention is mainly solved by the following technical scheme:
the high-temperature-resistant long-life lubricating grease is characterized by comprising the following components in percentage by mass:
50% -80% of base oil;
10% -20% of thickening agent;
2-10% of extreme pressure antiwear agent;
1% -5% of antioxidant;
0.1% -2% of anticorrosive agent;
0.5 to 5 percent of viscosity improver;
wherein the sum of the mass percentages of the components is 100%.
As a preferred embodiment of the present invention,
the base oil comprises naphthenic base oil and PAO base oil,
the thickening agent is lithium dodecahydroxy stearate-based soap,
the antioxidant comprises aromatic hydrocarbon derivatives, octyl/amyl diphenylamine and alkyl p-cresol,
the viscosity improver is ethylene-propylene copolymer.
As a preferred embodiment of the invention, the ratio of the aromatic hydrocarbon derivative, octyl/amyl diphenylamine and alkyl-p-cresol is 2-40:1: 1.
Preferably, the arene derivative is an alkyl poly-benzyl toluene derivative, and the alkyl poly-benzyl toluene derivative is friedel-crafts alkene.
The invention also discloses a preparation method of the high-temperature-resistant long-life lubricating grease, which is characterized by comprising the following steps:
step 1: adding 30% of base oil and lithium dodecahydroxystearate soap into a reaction kettle according to mass fraction, and heating to 180 ℃;
step 2: adding 20-25% of base oil, and heating to 210 ℃;
and step 3: adding the rest base oil, cooling, and grinding into base grease;
and 4, step 4: adding extreme pressure antiwear agent, antioxidant, anticorrosive additive and viscosity improver, stirring, grinding twice, filtering and degassing to obtain the high temperature resisting antioxidant lithium base grease.
The high-temperature-resistant long-life lubricating grease and the preparation method thereof have the following advantages: after the antioxidant additive alkyl poly benzyl toluene derivative is added into the lubricating grease, the oxidation induction period of the lubricating grease is longer, which shows that the lubricating grease has better oxidation stability and better extreme pressure performance.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly and unequivocally define the scope of the present invention.
Example 1
The raw material ratios for preparing the lithium-based grease 1 are shown in table 1, wherein the two types of mineral oil are naphthenic base oil, and the synthetic oil is poly-alpha-olefin (PAO).
TABLE 1 lithium-based lubricating grease raw material ratio 1
The preparation method of the lithium grease comprises the following steps:
step 1: and mixing naphthenic base oil and PAO base oil uniformly, mixing 30% of mixed base oil and 15% of lithium dodecahydroxystearate soap according to mass fraction, and heating to 180 ℃. (ii) a
Step 2: adding 20% of mixed base oil, and heating to 210 ℃;
and step 3: adding the rest 25% of the mixed base oil, cooling, and grinding into base grease;
and 4, step 4: adding an extreme pressure antiwear agent, an antioxidant, an anticorrosive agent and a viscosity improver, uniformly stirring, grinding twice, filtering and degassing to obtain the lithium-based grease.
Example 2
The raw material ratios for preparing the lithium-based grease 2 are shown in table 2, wherein the two types of mineral oil are naphthenic base oil, and the synthetic oil is poly-alpha-olefin (PAO).
TABLE 2 raw material ratio of lithium-based grease 2
The preparation method of the lithium grease comprises the following steps:
step 1: and mixing naphthenic base oil and PAO base oil uniformly, mixing 30% of mixed base oil and lithium dodecahydroxystearate soap according to mass fraction, and heating to 180 ℃.
Step 2: adding 25% of mixed base oil, and heating to 210 ℃.
And step 3: the remaining 25% of the base oil was added, cooled, and ground to base grease.
And 4, step 4: adding an extreme pressure antiwear agent, an antioxidant, an anticorrosive agent and a viscosity improver, uniformly stirring, grinding twice, filtering and degassing to obtain the lithium-based grease.
The analytical data of the properties of the grease samples obtained according to the present invention are shown in table 3, example 1 and example 2, and example 0 is a sample of a lithium grease base without an antioxidant.
TABLE 3 analysis of the Properties of grease samples
The data in table 3 show that, after the antioxidant additive alkyl poly benzyl toluene derivative of the invention is added into the lithium-based lubricating grease, the oxidation induction period is longer than that of the lubricating grease without the antioxidant additive alkyl poly benzyl toluene derivative, which indicates that the oxidation stability is better; after the antioxidant additive alkyl poly benzyl toluene derivative is added into the lubricating grease, compared with the lubricating grease without the antioxidant additive alkyl poly benzyl toluene derivative, the extreme pressure performance is better, and the additive and the anti-wear extreme pressure additive have synergistic effect.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (5)
1. The high-temperature-resistant long-life lubricating grease is characterized by comprising the following components in percentage by mass:
50% -80% of base oil;
10% -20% of thickening agent;
2-10% of extreme pressure antiwear agent;
1% -5% of antioxidant;
0.1% -2% of anticorrosive agent;
0.5 to 5 percent of viscosity improver;
wherein the sum of the mass percentages of the components is 100%.
2. The high temperature resistant long life grease of claim 1,
the base oil comprises naphthenic base oil and PAO base oil,
the thickening agent is lithium dodecahydroxy stearate-based soap,
the antioxidant comprises aromatic hydrocarbon derivatives, octyl/amyl diphenylamine and alkyl p-cresol,
the viscosity improver is ethylene-propylene copolymer.
3. The high temperature resistant long life grease of claim 2 wherein the ratio of aromatic hydrocarbon derivative, octyl/amyl diphenylamine, alkyl-p-cresol is 2-40:1: 1.
4. The grease of claim 2, wherein the aromatic hydrocarbon derivative is an alkyl poly benzyl toluene derivative, and the alkyl poly benzyl toluene derivative is friedel-crafts alkene.
5. A method for preparing the high temperature resistant long life grease of claim 2, comprising the steps of:
step 1: adding 30% of base oil and lithium dodecahydroxystearate soap into a reaction kettle according to mass fraction, and heating to 180 ℃;
step 2: adding 20-25% of base oil, and heating to 210 ℃;
and step 3: adding the rest base oil, cooling, and grinding into base grease;
and 4, step 4: adding extreme pressure antiwear agent, antioxidant, anticorrosive additive and viscosity improver, stirring, grinding twice, filtering and degassing to obtain the high temperature resisting antioxidant lithium base grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210039723.7A CN114369487A (en) | 2022-01-14 | 2022-01-14 | High-temperature-resistant long-life lubricating grease and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210039723.7A CN114369487A (en) | 2022-01-14 | 2022-01-14 | High-temperature-resistant long-life lubricating grease and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114369487A true CN114369487A (en) | 2022-04-19 |
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| CN202210039723.7A Pending CN114369487A (en) | 2022-01-14 | 2022-01-14 | High-temperature-resistant long-life lubricating grease and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839041A (en) * | 2012-08-23 | 2012-12-26 | 中国石油化工股份有限公司 | Composition of composite lithium grease and preparation method |
| CN104164279A (en) * | 2014-08-05 | 2014-11-26 | 中国石油化工股份有限公司 | Lubricating grease composition for automobile windshield positioning pin and preparation method of lubricating grease composition |
| CN104513126A (en) * | 2013-09-26 | 2015-04-15 | 赵朝华 | Preparation method and applications of alkyl multi-benzyl toluene or alkyl dibenzyl toluene |
| CN107828473A (en) * | 2017-10-30 | 2018-03-23 | 江苏龙蟠科技股份有限公司 | A kind of high-low temperature resistant long-life extreme pressure grease and preparation method thereof |
-
2022
- 2022-01-14 CN CN202210039723.7A patent/CN114369487A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839041A (en) * | 2012-08-23 | 2012-12-26 | 中国石油化工股份有限公司 | Composition of composite lithium grease and preparation method |
| CN104513126A (en) * | 2013-09-26 | 2015-04-15 | 赵朝华 | Preparation method and applications of alkyl multi-benzyl toluene or alkyl dibenzyl toluene |
| CN104164279A (en) * | 2014-08-05 | 2014-11-26 | 中国石油化工股份有限公司 | Lubricating grease composition for automobile windshield positioning pin and preparation method of lubricating grease composition |
| CN107828473A (en) * | 2017-10-30 | 2018-03-23 | 江苏龙蟠科技股份有限公司 | A kind of high-low temperature resistant long-life extreme pressure grease and preparation method thereof |
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Application publication date: 20220419 |