CN109181821A - A kind of multi-purpose grease and preparation method thereof - Google Patents
A kind of multi-purpose grease and preparation method thereof Download PDFInfo
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- CN109181821A CN109181821A CN201810947536.2A CN201810947536A CN109181821A CN 109181821 A CN109181821 A CN 109181821A CN 201810947536 A CN201810947536 A CN 201810947536A CN 109181821 A CN109181821 A CN 109181821A
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- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- 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
- C10M2207/127—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 polycarboxylic
- C10M2207/1276—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 polycarboxylic used as thickening agent
-
- 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
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- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/047—Thioderivatives not containing metallic elements
-
- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- 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
Abstract
The invention discloses a kind of multi-purpose grease and preparation method thereof.The lubricating grease includes being mixed to form compounding base oil by weight 40:60 by PAO4 and PAO6 base oil, using 12- hydroxy stearic acid, azelaic acid and boric acid as Compound-acid and LiOHH2O is saponified the complex lithium thickening agent to be formed and antioxidant and extreme pressure anti-wear additives.Lubricating grease of the invention the high-temperature bearing service life, it is anti-get rid of rouge ability, extreme pressure and antiwear behavior, shear stability in terms of performance more preferably and other performances also comply with relevant criterion requirement, various engine lubrication fields can be more broadly used for.
Description
Technical field
The present invention relates to a kind of lubricating grease fields, more specifically, are related to a kind of multipurpose profit of boracic acid type thickening agent
Consistent lubricant and preparation method thereof.
Background technique
Lubricating grease is for guaranteeing that machine operation reliability and maintainability have important role.Especially engine is with lubricating grease master
It is used for the bearings of the components such as various engine motors, instrument, engine accessory power rating wheel, gear, chain and operating mechanism node
It lubricates and protects, many using the working position of grease lubrication on vehicle or aircraft, operating condition is again different, thus lubricating grease
Brand and model it is more.Raising with people to engine calls, such as service life, power etc., to the use temperature of consistent lubricant
The needs of range, load-carrying ability, medium-resistance, protective capacities etc. constantly propose new demand, it is therefore desirable to develop new profit
Consistent lubricant is to adapt to the needs developed.
Currently, developed lubricating grease mainly has compound lithium gease (such as CN96120874), polyurea grease (such as
CN101440329, CN1465680), bentonite grease (such as US4,711,732), high basicity composite mahogany grease of calcium sulfonic acid (such as
US5,015,401) etc..
However, the mechanical stability of polyurea grease is poor, exists when for wheel bearing and get rid of rouge distinct issues.Swelling
Long time running can be thinning within the bearing for native lubricating grease, and its wear resistence and resistance to marring be not high, and compatibility is poor.Compound sulphur
The cryogenic property of sour calcium-base grease is poor, especially low temperature torque, even if using the lower PAO4 base oil of viscosity, it is low
Warm torque performance is not able to satisfy the index request of multi-purpose grease still.And complex lithium thickening agent has good high and low temperature
Energy, oxidation stability, colloid stability, shear stability and compatibility, at present multiduty general-purpose grease product in the world
It is all made of complex lithium thickening agent, although there are still certain for China uses at present such as No. 931 lubricating grease and No. 936 lubricating grease
The problem of performance indicator can satisfy requirement, but other performance index cannot meet the requirements, application range is still not enough extensively.
Summary of the invention
According to an aspect of the present invention, the present invention provides a kind of multi-purpose grease, including base oil, base oil is
The compounding base oil of PAO4 and PAO6 base oil, the weight ratio of PAO4 and PAO6 base oil are 40:60.
Multi-purpose grease further includes complex lithium thickening agent, includes boric acid in complex lithium thickening agent, further includes that 12- hydroxyl is hard
Resin acid, azelaic acid and LiOHH2O, wherein boric acid is 16 parts by weight in the complex lithium thickening agent of every 100 parts by weight；
LiOHH2O is 15-40 parts by weight, remaining is 12- hydroxy stearic acid and azelaic acid, wherein 12- hydroxy stearic acid and azelaic acid
Weight ratio be 0.6:1-0.9:1.
Further, based on the complex lithium thickening agent of 100 parts by weight, the additional amount of LiOHH2O is 26-36 parts by weight；
The weight ratio of the 12- hydroxy stearic acid and azelaic acid is 0.6:1-0.7:1.Further, the complex lithium based on 100 parts by weight
Thickening agent, the additional amount of LiOHH2O are 31 parts by weight.
The lubricating grease further includes antioxidant and extreme pressure anti-wear additives, wherein the lubricating grease based on 100 parts by weight:
Compounding base oil content is 60% to 70%；
Being thickened agent content is 5% to 12%；
Antioxidant content is 10% to 15%；
Extreme-pressure anti-wear agent content is 5% to 15%；
The sum of each component total amount is 100%.
It is highly preferred that the lubricating grease based on 100 parts by weight:
Compounding base oil content is 64.8%；
Being thickened agent content is 11.8%；
Antioxidant content is 14.3%；
Extreme-pressure anti-wear agent content is 9.1%.
Antioxidant is di-iso-octyldiphenylamine and its derivative.
It is thiadiazoles and its derivative, molybdenum disulfide, sulphur phosphide or its two kinds of any weight ratio that extreme pressure anti-wear additives, which are selected from,
Combination.
According to another aspect of the present invention, the present invention provides a kind of preparation methods of multi-purpose grease, should
Method the following steps are included:
PAO4 and PAO6 base oil is mixed in proportion under room temperature, forms compounding base oil；
It is saponified to obtain complex lithium thickening agent by Compound-acid and LiOHH2O of 12- hydroxy stearic acid, azelaic acid and boric acid.
About 100 DEG C of water of boric acid is dissolved, forming 90 DEG C of boric acid saturated aqueous solutions, (boric acid solubility is about at 90 DEG C
31.3g/100g water), in addition LiOHH2O is added with stirring in about 100 DEG C of water, forms LiOHH2O suspension, wherein
The weight ratio of LiOHH2O and water is about 1:1~1:3 in the LiOHH2O suspension；
The compounding base oil of 2/3 amount is added into reaction kettle, is warming up to about 85 to 120 DEG C, preferably 95 to 110 DEG C, most
Preferably 105 DEG C, after azelaic acid and 12- hydroxy stearate acid dissolution is added, 90 DEG C of boric acid saturated aqueous solutions is added, are sufficiently stirred,
It keeps temperature to 90~95 DEG C, is slowly added to LiOHH2O suspension, adds within 10~30 minutes, be then warming up to 104 DEG C, protect
1 to 3 hour, preferably 2 hours are held, 170 to 195 DEG C, preferably 180 to 190 DEG C are to slowly warm up to, keeps the temperature 1 to 2 hour, preferably 1.5
Hour, the base oil of remaining about 1/3 amount is then added, is further continued for stir about 1 hour, then cools to room temperature；It is stirred at room temperature
Lower addition antioxidant and extreme pressure anti-wear additives, obtain final product.
Beneficial effect
Lubricating grease new material of the invention is with domestic at present such as No. 931 lubricating grease and No. 936 lubricating grease and external use
The lubricating grease of the micro- glue of bentonite compares, and in the high-temperature bearing service life, resists and gets rid of rouge ability, extreme pressure and antiwear behavior, shear stability
Energy etc. performance is more preferably and other performances also comply with relevant criterion requirement, can be more broadly used for various engine lubrications
Field.
Specific embodiment
All raw materials used in the present invention may each be commercially available product.
Embodiment 1
By PAO4 and PAO6 base oil by weight it is that 40:60 is mixed under room temperature, forms compounding base oil；When two
When person's ratio is less than the value, then the low temperature torque performance of lubricating grease is difficult to reach requirement；And when the two ratio is greater than the value, then
The evaporation loss of lubricating grease is difficult to receive.
90 DEG C of water of boric acid is dissolved, formation boric acid saturated aqueous solution is spare, and (boric acid solubility is about at 90 DEG C
31.3g/100g water), in addition by LiOHH2O is added with stirring in about 100 DEG C of water, forms LiOHH2O suspension is spare,
The wherein LiOHH2LiOHH in O suspension2The weight ratio of O and water is 1:1.
The compounding base oil 43.2kg that mixes is added into the reaction kettle of 150L, and (the compounding base oil to be about added is total
The 2/3 of amount), be warming up to 105 DEG C, be then added 12- hydroxy stearic acid 4.14kg and azelaic acid 6.9kg (12- hydroxy stearic acid with
The weight ratio of azelaic acid is about 0.6:1), 90 DEG C of boric acid saturated aqueous solution 8.78kg is added after stirring and dissolving and (wherein dissolves
The boric acid of about 1.88kg), it keeps temperature of reaction system to 90~95 DEG C after being thoroughly mixed uniformly, is then slowly added into
LiOH·H2O suspension 7.84kg, adds for 25 minutes, is then warming up to 104 DEG C, is kept for 2 hours, is to slowly warm up to 180 to 190
DEG C, 1.5 hours are kept the temperature, the base oil 21.6kg of remaining about 1/3 amount is then added at a temperature of this, is further continued for stir about 1 hour,
It then cools to room temperature；
Antioxidant di-iso-octyldiphenylamine 14.3g and extreme pressure anti-wear additives curing are added into the product obtained produced above
Molybdenum 9.1kg obtains final grease product in stir about 1 hour, wherein the grease product based on 100 parts by weight, base oil
Content is 64.8%, and thickening agent content is 11.8%, and antioxidant content is 14.3% and extreme-pressure anti-wear agent content is 9.1%.
Embodiment 2
In addition to the grease product based on 100 parts by weight, base oil content 70%, thickening agent content is 5%, antioxidant
Other than the ratio that content is 15% and extreme-pressure anti-wear agent content is 10% is adjusted, other with operated in embodiment 1 it is identical.
Embodiment 3
In addition to the grease product based on 100 parts by weight, base oil content 60%, thickening agent content is 12%, antioxygen
Other than the ratio that agent content is 13% and extreme-pressure anti-wear agent content is 15% is adjusted, other operate phase with embodiment 1
Together.
Embodiment 4
In addition to the grease product based on 100 parts by weight, base oil content 67%, thickening agent content is 8%, antioxidant
Other than the ratio that content is 11% and extreme-pressure anti-wear agent content is 14% is adjusted, other with operated in embodiment 1 it is identical.
Comparative example 1
Other than being added without boric acid, other according in embodiment 1 step and material ratio prepare grease product.
The performance test results analysis
(1) resist and get rid of rouge ability performance test
The anti-rouge ability of getting rid of of lubricating grease is one of important indicator of its quality level, using the test of ASTM D3527 method
Machine) test is compared to the anti-rouge ability of getting rid of of the lubricating grease prepared in embodiment 1 to 4 and comparative example 1, test result is shown in Table 1
It is shown.
Table 1: Lubricating Greases get rid of rouge ability and compare
By table 1, it can be seen that, lubricating grease new material (embodiment 1-4) test front and back bearings temperature rise of the invention less adds
The comparative example 1 for entering boric acid is low, and guarantor's rouge ability of lubricating grease new material (embodiment 1-4) of the invention also significantly improves.
High in addition to requiring high temperature performance, lubricating grease also needs to have enough adhesivenesses to improve lubricating grease bearing guarantor
Rouge amount, it is therefore necessary to additive appropriate be added, lubricating grease is modified, improve its high and low temperature performance and adhesion property
Deng.
In general, the reason of getting rid of rouge mainly has two aspects, first is that lubricating grease is in bearing use process since machinery is made
With, cause grease consistency to reduce, i.e. the mechanical stability of lubricating grease is not high enough, second is that consistency of grease is insufficient, adhesiveness
Not enough.Solution in the prior art: first is that improve the mechanical stability of lubricating grease by the adjustment to grease thickener,
Second is that adding tackifier appropriate.The present invention can efficiently solve by the way that boric acid is added into thickening agent and get rid of rouge problem, simultaneously
Guarantee the high temperature performance and other performances of lubricating grease.For only with 12- hydroxy stearic acid and binary acid (azelaic acid or the last of the ten Heavenly stems two
Acid) two kinds of acid be Compound-acid preparation thickening agent, test result shows that the lubricating grease shear stability synthesized by it is not high.
(2) high-temperature bearing performance test
The service life of lubricating grease directly influences the m of e phase, mends rouge period and economic benefit etc..
The test of lubricating grease high-temperature bearing performance is exactly an effective means for predicting lubricating grease service life.General engine lubrication rouge is wanted
Asking can be under 177 DEG C of high-temperature condition, and bearing service life reaches 400 hours or more, tries according to described in ASTM D 3336
Proved recipe method carries out bearing performance to the lubricating grease prepared in the lubricating grease and comparative example 1 of embodiment 1 to 4 prepared in accordance with the present invention
Test, is as a result listed in the table below in 2.
Table 2: bearing performance test result
It can be seen that the high-temperature bearing performance of lubricating grease (embodiment 1-4) prepared in accordance with the present invention is good by the data of table 2
It is good.
(3) lubricating grease compatibility test
The compatibility test of lubricating grease prepared in accordance with the present invention and similar lubricating grease is according to GB/T269-1991, SH/T
The test method that 0324-1992 and GB/T 3498-1983 is recorded measures, and specific test method is to mix two kinds of lubricating grease
After conjunction, awl penetration test is carried out after standing 7 days under the conditions of 18~29.5 DEG C, relative humidity are 50%, criterion is mixing
Lubricating grease afterwards does not form jelly, greasy or solid insoluble matter, and cone penetration is in above-mentioned measurement standard prescribed limit.Table 3
It is the lubricating grease of the preparation of embodiment according to the present invention 1 with No. 931 and No. 932 lubricating grease compatibility test results with 4.
Table 3:
Table 4:
It can be seen that lubricating grease according to the present invention has good compatibility with No. 931, No. 932 lubricating grease, with external
Same type lubricating grease also has good compatibility.
Claims (10)
1. a kind of multi-purpose grease, including base oil, it is characterised in that the base oil is PAO4 and PAO6 base oil
Base oil is compounded, the weight ratio of the PAO4 and PAO6 base oil is 40:60.
2. multi-purpose grease according to claim 1, it is characterised in that the lubricating grease further includes complex lithium thickening agent,
It include boric acid in the complex lithium thickening agent.
3. multi-purpose grease according to claim 2, it is characterised in that the complex lithium thickening agent further includes 12- hydroxyl
Stearic acid, azelaic acid and LiOHH2O, wherein boric acid is 16 parts by weight in the complex lithium thickening agent of every 100 parts by weight；
LiOHH2O is 15-40 parts by weight, remaining is 12- hydroxy stearic acid and azelaic acid.
4. multi-purpose grease according to claim 3, which is characterized in that wherein 12- hydroxy stearic acid and azelaic acid
Weight ratio is 0.6:1-0.9:1；And/or the complex lithium thickening agent based on 100 parts by weight, the additional amount of LiOHH2O are 26-36
Parts by weight；The weight ratio of the 12- hydroxy stearic acid and azelaic acid is preferably 0.6:1-0.7:1；And/or it is based on 100 parts by weight
Complex lithium thickening agent, the additional amount of LiOHH2O is preferably 31 parts by weight.
5. multi-purpose grease according to claim 3, it is characterised in that the lubricating grease further includes antioxidant and extreme pressure
Antiwear additive, wherein the base oil weight percent is 60% to 70%, thickening agent weight percent is 5% to 12%, antioxygen
Agent weight percent is 10% to 15%, extreme pressure anti-wear additives weight percent is 5% to 15%, and the sum of each component total amount is
100%；The base oil weight percent is preferably that 64.8%, thickening agent weight percent is preferably 11.8%, antioxidant weight
It is preferably 9.1% that amount percentage, which is preferably 14.3%, extreme pressure anti-wear additives weight percent,.
6. multi-purpose grease according to claim 5, it is characterised in that the antioxidant be di-iso-octyldiphenylamine and
Its derivative；And/or the extreme pressure anti-wear additives are selected from thiadiazoles and its derivative, molybdenum disulfide, sulphur phosphide or its two kinds are any
The combination of weight ratio.
7. the preparation method of multi-purpose grease described in a kind of one of claim 1-6, it is characterised in that include the following steps:
PAO4 and PAO6 base oil is mixed in proportion under room temperature, forms compounding base oil.
8. the preparation method of multi-purpose grease according to claim 7, it is characterised in that the method also includes as follows
Step: it is saponified to obtain complex lithium thickening agent by Compound-acid and LiOHH2O of 12- hydroxy stearic acid, azelaic acid and boric acid.
9. the preparation method of multi-purpose grease according to claim 8, it is characterised in that further include following steps:
About 100 DEG C of water of boric acid is dissolved, 90 DEG C of boric acid saturated aqueous solutions are formed；LiOHH2O is added with stirring about 100
DEG C water in, formed LiOHH2O suspension；
The compounding base oil of 2/3 amount is added into reaction kettle, is warming up to 85-120 DEG C, azelaic acid is added and 12- hydroxyl is hard
After resin acid dissolution, 90 DEG C of boric acid saturated aqueous solutions are added, are sufficiently stirred, keeps temperature to 90-95 DEG C, be slowly added to LiOH
H2O suspension adds for 10~30 minutes, is then warming up to 104 DEG C, is kept for 1 to 3 hour, is to slowly warm up to 170-195 DEG C, protects
Temperature 1 to 2 hour, is then added the compounding base oil of remaining 1/3 amount, is further continued for stirring 1 hour, then cools to room temperature；Room
Temperature is added with stirring antioxidant and extreme pressure anti-wear additives, obtains final product.
10. the preparation method of multi-purpose grease according to claim 9, it is characterised in that the LiOHH2O is suspended
The weight ratio of LiOHH2O and water is 1:1-1:3 in liquid；The base oil of 2/3 amount is added into reaction kettle, is warming up to 95-110 DEG C
Or 105 DEG C, after azelaic acid and 12- hydroxy stearate acid dissolution is added, 90 DEG C of boric acid saturated aqueous solutions are added, are sufficiently stirred, protects
Temperature is held to 90-95 DEG C, is slowly added to LiOHH2O suspension, is added within 10-30 minutes, is then warming up to 104 DEG C, holding 2 is small
When, it is to slowly warm up to 180-190 DEG C, 1-2 hours or 1.5 hours is kept the temperature, the base oil of remaining 1/3 amount is then added, followed by
Continuous stirring 1 hour, then cools to room temperature.
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| CN201810947536.2A CN109181821A (en) | 2018-08-17 | 2018-08-17 | A kind of multi-purpose grease and preparation method thereof |
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| CN201810947536.2A CN109181821A (en) | 2018-08-17 | 2018-08-17 | A kind of multi-purpose grease and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678633A (en) * | 2022-09-09 | 2023-02-03 | 中国科学院兰州化学物理研究所 | Composite lithium prefabricated thickening agent and preparation method thereof, and lubricating grease composition and preparation method thereof |
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| CN101218331A (en) * | 2005-04-26 | 2008-07-09 | 可再生润滑油有限公司 | High temperature biobased lubricant compositions comprising boron nitride |
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| CN106497659A (en) * | 2016-10-05 | 2017-03-15 | 中国石油化工股份有限公司 | A kind of turbine and worm lubricant composition and preparation method |
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| CN115678633A (en) * | 2022-09-09 | 2023-02-03 | 中国科学院兰州化学物理研究所 | Composite lithium prefabricated thickening agent and preparation method thereof, and lubricating grease composition and preparation method thereof |
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Application publication date: 20190111 |