CN106978236A - A kind of base oil compounding high temperature complex lithium grease and preparation method thereof - Google Patents

A kind of base oil compounding high temperature complex lithium grease and preparation method thereof Download PDF

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Publication number
CN106978236A
CN106978236A CN201710249295.XA CN201710249295A CN106978236A CN 106978236 A CN106978236 A CN 106978236A CN 201710249295 A CN201710249295 A CN 201710249295A CN 106978236 A CN106978236 A CN 106978236A
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high temperature
base oil
oil
complex lithium
agent
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胡萍
郭阳
骆旎
张信
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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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
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C10M2201/0626—Oxides; Hydroxides; Carbonates or bicarbonates 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
    • 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
    • C10M2207/025—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with condensed 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • 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
    • 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
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • 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
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • 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
    • C10N2030/08—Resistance to extreme temperature
    • 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

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  • 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 present invention provides a kind of base oil compounding high temperature complex lithium grease.It is made up of mineral oil, silicone oil, thickening agent, antioxidant, antirust agent, extreme pressure anti-wear additives, and percetage by weight shared by each raw material is：Mineral oil 47% 52%；Silicone oil 31% 35%；Thickening agent 10% 19%；Antioxidant 1% 3%；Antirust agent 1% 2%；Extreme pressure anti-wear additives 0.5% 1.5%.The present invention also provides the preparation method that the base oil compounds high temperature complex lithium grease.Performance is stable under the lubricating grease high-temperature environment, and can provide the lubricating grease of lasting lubrication antifriction effect.

Description

A kind of base oil compounding high temperature complex lithium grease and preparation method thereof
Technical field
The present invention relates to industrial lubrication field, the more particularly to base oil for being used under high temperature, high load capacity environment is answered With high temperature complex lithium grease and preparation method thereof.
Background technology
The operating temperature more and more higher of many lubricant housings such as cylinder, piston etc., the lubrication for mechanical moving element will Ask is also constantly to propose new requirement --- also to ensure lubricant effect and lubrication energy under the harsh conditions such as high temperature, top load Power, this to increase sharply to the demand of high-performance lubricating grease.
Conventional lubricating grease is oily metal soap grease based on mineral oil at present, and temperature in use is no more than 120 DEG C, temperature Degree is once too high, then can produce serious oxidation, point oil or even drop down drop, lose lubrication.But it is high gentle according to actual requirement The temperature in use of consistent lubricant needs to reach 250 DEG C, and requires that lubricating grease still possesses good high-temperature stability and lubrication at high temperature Property.Therefore, needing exploitation badly, performance is stable in high temperature environments, and can provide the lubricating grease of lasting lubrication antifriction effect.
The content of the invention
The present invention provides performance stabilization under a kind of hot environment to solve above-mentioned technical problem, and can provide lasting profit Base oil compounding high temperature complex lithium grease of sliding antifriction effect and preparation method thereof.The lubricating grease has preferable high temperature steady Qualitative, good high temperature lubricating, in high temperature environments with good lubrication protection effect.
In order to achieve the above object, the technical scheme is that：
A kind of base oil compounds high temperature complex lithium grease, and it is by mineral oil, silicone oil, thickening agent, antioxidant, antirust Agent, extreme pressure anti-wear additives are constituted, and percetage by weight shared by each raw material is：
In such scheme, percetage by weight shared by each raw material is：
In such scheme, the mineral oil is 500SN mineral oil, and the silicone oil is methyl-silicone oil or methyl phenyl silicone oil.
In such scheme, described thickening agent includes C16-C20Organic acid, C6-C12Binary organic acid and lithium hydroxide The aqueous solution.
In such scheme, the C16-C20Organic acid is 12- hydroxy stearic acids；C6-C12Binary organic acid be decanedioic acid, The concentration of lithium hydroxide aqueous solution is 7-10wt%, and the ratio between the amount of 12- hydroxy stearic acids and lithium hydroxide material is 1:1, the last of the ten Heavenly stems two The ratio between amount of acid and lithium hydroxide material is 1:2.
In such scheme, described antioxidant is amine antioxidants or phenolic antioxidant, or is phenolic antioxidant and amine Kind antioxidant press any proportioning mixing antioxidant, the phenolic antioxidant be 2,6- toluene di-tert-butyl phenols, alpha-Naphthol or Four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters；The amine antioxidants are diphenylamines.
In such scheme, described antirust agent is organic acid metal salt antirust agent, and organic acid metal salt antirust agent is One or both of Lanolin Calcium Soap and petroleum sulfonate, Lanolin Calcium Soap and the weight of petroleum sulfonate ratio are when being two kinds 1:1-1:1.2。
In such scheme, the extreme pressure anti-wear additives are two thio dialkyl amido salt.
In such scheme, two thio dialkyl amido salt are dibutyl dithiocaarbamate lead or dibutyl dithio ammonia Base formic acid molybdenum, or mixed by dibutyl dithiocaarbamate lead and dibutyl dithiocaarbamate molybdenum, it is described The weight part ratio that dibutyl dithiocaarbamate lead is mixed with dibutyl dithiocaarbamate molybdenum is (1-1.5):(1- 1.5)。
A kind of described base oil compounds the preparation method of high temperature complex lithium grease, and it comprises the following steps：
1) selection of raw material：The percetage by weight as shared by each raw material is：Mineral oil 47%-52%；Silicone oil 31%-35%； Thickening agent 10%-19%；Antioxidant 1%-3%；Antirust agent 1%-2%；Extreme pressure anti-wear additives 0.5%-1.5%；Selection mineral oil, Silicone oil, thickening agent, antioxidant, antirust agent, extreme pressure anti-wear additives；
2) mixed base oil is used as after mixing mineral oil and silicone oil；
3) by C16-C20Organic acid, antirust agent, antioxidant add 1/3 mixed base oil in, be warming up to 100-105 DEG C Dissolving；Lithium hydroxide aqueous solution is added afterwards；Insulation carries out first step saponification, saponification time 1h；Add C6-C12 Binary organic acid, carry out second step saponification, saponification time 0.5h；Saponification adds 1/3 mixed base oil after terminating, be warming up to 130-140 DEG C, it is dehydrated, is further continued for being warming up to 160-220 DEG C of progress high temperature refining, the high temperature refining time is 10-20 minutes, Then 1/3 mixed base oil is added as quench oil, and is stirred continuously；80 DEG C are cooled to, extreme pressure anti-wear additives is added, is cooled to room Temperature grinding, obtains base oil compounding high temperature complex lithium grease.
Present component is act as：Mineral oil：Grease base plinth oil, is the main component of lubricating grease.Silicone oil：With ore deposit Thing oil is compounded, and improves the high-temperature behavior of base oil.Thickening agent：Base oil is fixed in soap molecule formation network structure, Form the fat of semisolid.Antioxidant：Improve the oxidation resistance of lubricating grease at high temperature.Antirust agent：Lubricating grease is reduced to gold Belong to the corrosion of part.Extreme pressure anti-wear additives：Improve the anti-extreme pressure energy of lubricating grease.
The base oil compounds the property indices of high temperature complex lithium grease：
The beneficial effects of the invention are as follows：Good stability, lubricity can be kept under room temperature to 200 DEG C of environment, it is right Metallic element in hot environment has good lubrication protection effect；Avoid because temperature change it is big caused by lubricating grease The problem of failing or drop down drop；With good extreme pressure anti-wear and adhesion property.
Brief description of the drawings
Fig. 1 is two kinds of base oil molecules and thickening agent interaction of molecules schematic diagram.
Embodiment
The present invention provides a kind of base oil compounding high temperature complex lithium grease, and it is by mineral oil, silicone oil, thickening agent, anti- Oxygen agent, antirust agent, extreme pressure anti-wear additives are constituted, and percetage by weight shared by each raw material is：Mineral oil 47%-52%；Silicone oil 31%- 35%；Thickening agent 10%-19%；Antioxidant 1%-3%；Antirust agent 1%-2%；Extreme pressure anti-wear additives 0.5%-1.5%.
The mineral oil is 500SN mineral oil, and the silicone oil is methyl-silicone oil or methyl phenyl silicone oil.
Described thickening agent includes C16-C20Organic acid, C6-C12Binary organic acid and lithium hydroxide aqueous solution.It is described C16-C20Organic acid is 12- hydroxy stearic acids；C6-C12Binary organic acid be decanedioic acid, the concentration of lithium hydroxide aqueous solution is The ratio between amount of 7-10wt%, 12- hydroxy stearic acid and lithium hydroxide material is 1:1, the amount of decanedioic acid and lithium hydroxide material it Than for 1:2.
Described antioxidant is amine antioxidants or phenolic antioxidant, or is that phenolic antioxidant and amine antioxidants are pressed and appointed The mixing antioxidant for proportioning of anticipating, the phenolic antioxidant is 2,6- toluene di-tert-butyl phenols, alpha-Naphthol or four [β-(3,5- bis- Tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester；The amine antioxidants are diphenylamines.
Described antirust agent be organic acid metal salt antirust agent, organic acid metal salt antirust agent be Lanolin Calcium Soap and One or both of petroleum sulfonate, Lanolin Calcium Soap and the weight of petroleum sulfonate ratio are 1 when being two kinds:1-1:1.2.
The extreme pressure anti-wear additives are two thio dialkyl amido salt.Two thio dialkyl amido salt are dibutyl dithio ammonia Base lead formate or dibutyl dithiocaarbamate molybdenum, or by dibutyl dithiocaarbamate lead and dibutyl dithio ammonia Base formic acid molybdenum is mixed, the weight that described dibutyl dithiocaarbamate lead is mixed with dibutyl dithiocaarbamate molybdenum Amount part is compared for (1-1.5):(1-1.5).
Embodiment 1
A kind of base oil compounds high temperature complex lithium grease, and percetage by weight shared by each component is：Mineral oil 500SN50.4%；Methyl-silicone oil 33.6%；Thickening agent 12%；Antioxidant 2%；Antirust agent 1%；Extreme pressure anti-wear additives 1%.
A kind of base oil compounds the manufacture method of high temperature complex lithium grease, comprises the following steps：By 12- hydroxy stearates Acid, antioxidant, antirust agent are added in 1/3 mixed base oil, are warming up to 100-105 DEG C of dissolving；It is water-soluble that lithium hydroxide is added afterwards Liquid；Insulation carries out first step saponification, saponification time 1h；Decanedioic acid is added, second step saponification, saponification time is carried out 0.5h；Saponification adds 1/3 mixed base oil after terminating, be warming up to 130-140 DEG C, is dehydrated, and is further continued for being warming up to 160-220 DEG C high temperature refining is carried out, the high temperature refining time is 10-20 minutes, then adds 1/3 mixed base oil as quench oil, and constantly Stirring；80 DEG C are cooled to, extreme pressure anti-wear additives is added, is cooled to grinding at room temperature, obtains high temperature complex lithium grease.
A kind of 295 DEG C of base oil compounding high temperature complex lithium grease dropping point of the present embodiment, cone penetration 227.5 (0.1mm), Stencil oil-dividing rate 3.9%.Excellent in stability at high temperature, lubricant effect is stable.
The present invention prepares high temperature complex lithium grease using mineral oil and oil based on silicone oil compounding.Based on soap oil Gel particles dispersion is theoretical, two kinds of different base oils, and its molecular density is different, and molecular gap is also different, when two kinds of bases During oil mixing, a kind of base oil can adsorb in the middle of the molecular gap of another base oil (Fig. 1), therefore, mixed base The adsorption density of oil is larger, and the basic Chuck Steak of the fibers adsorption of per surface area, the restraining force to base oil is bigger, base oil Energy needed for departing from skeleton is more.Meanwhile, during two kinds of base oil mixing, power can be also acted between base oil molecules, this It can be that chemical action and physical action are carried out simultaneously to plant active force, in identical space, destroyed required for these are acted on Energy is just more.
Advantage of the invention is that：When mineral oil and silicone oil are compounded, mineral oil molecule can enter between silicone molecule, increase Active force between strong two kinds of oil molecules；After fat is crowded into, due to mineral oil molecule, methyl phenyl silicone oil molecule and thick Complicated interaction between agent molecule, strengthens the active force inside lubricating grease, this causes the lubricating grease prepared to have Higher dropping point and stronger high-temperature stability, with preferable high-temperature stability, good high temperature lubricating.
Exclusive use mineral oil grease (percetage by weight is 84%) is listed in table 1, silicone oil lubrication is used alone The test result of compounding base oil, compounds the dropping point of base oil used in fat (percetage by weight is 84%) and the present embodiment Rise and Stencil oil-dividing rate reduction illustrate base oil compounding after, the heat endurance of lubricating grease and colloid stability increase, Its colloform texture is more preferable, it was confirmed that where the advantage of compounding base oil lubricating grease.
The base oil of table 1 compounds lubricating grease and distinguished with single base oil PERFORMANCE OF GREASES
Embodiment 2
A kind of base oil compounds high temperature complex lithium grease, and percetage by weight shared by each component is：Mineral oil 500SN48.6%；Methyl-silicone oil 32.4%；Thickening agent 15%；Antioxidant 1.5%；Antirust agent 1.25%；Extreme pressure anti-wear additives 1.25%.
A kind of base oil compounds the manufacture method of high temperature complex lithium grease, comprises the following steps：By 12- hydroxy stearates Acid, antioxidant 1010, antirust agent are added in 1/3 mixed base oil, are warming up to 100-105 DEG C of dissolving；Lithium hydroxide is added afterwards The aqueous solution；Insulation carries out first step saponification, saponification time 1h；Decanedioic acid is added, second step saponification, saponification is carried out Time 0.5h；Saponification adds 1/3 mixed base oil after terminating, be warming up to 130-140 DEG C, is dehydrated, and is further continued for being warming up to 160-220 DEG C of progress high temperature refining, the high temperature refining time is 10-20 minutes, then adds 1/3 mixed base oil as chilling Oil, and be stirred continuously；80 DEG C are cooled to, extreme pressure anti-wear additives is added, is cooled to grinding at room temperature, high temperature compound lithium base lubrication is obtained Fat.
A kind of 273 DEG C of base oil compounding high temperature complex lithium grease dropping point of the present embodiment, cone penetration 241.2 (0.1mm), Stencil oil-dividing rate 2.2%.Excellent in stability at high temperature, lubricant effect is stable.
Embodiment 3
A kind of base oil compounds high temperature complex lithium grease, it is characterised in that percetage by weight is shared by each component：Ore deposit Thing oil 500SN51.2%；Methyl-silicone oil 34.8%；Thickening agent 10%；Antioxidant 2%；Antirust agent 0.5%；Extreme pressure anti-wear additives 1.5%.
A kind of base oil compounds the manufacture method of high temperature complex lithium grease, comprises the following steps：By C16-C20It is organic Acid, antirust agent are added in 1/3 mixed base oil, are warming up to 100-105 DEG C of dissolving；Lithium hydroxide aqueous solution is added afterwards；Insulation Carry out first step saponification, saponification time 1h；Low molecule binary organic acid is added, second step saponification, saponification is carried out Time 0.5h；Saponification adds antioxidant and 1/3 mixed base oil after terminating, and is warming up to 130-140 DEG C, is dehydrated, is further continued for 160-220 DEG C of progress high temperature refining is warming up to, the high temperature refining time is 10-20 minutes, then adds 1/3 mixed base oil conduct Quench oil, and be stirred continuously；80 DEG C are cooled to, extreme pressure anti-wear additives is added, is cooled to grinding at room temperature, high temperature compound lithium base profit is obtained Consistent lubricant.
A kind of 260 DEG C of base oil compounding high temperature complex lithium grease dropping point of the present embodiment, cone penetration 271.2 (0.1mm), Stencil oil-dividing rate 4.6%.Excellent in stability at high temperature, lubricant effect is stable.

Claims (10)

1. a kind of base oil compounds high temperature complex lithium grease, it is characterised in that it is by mineral oil, silicone oil, thickening agent, antioxygen Agent, antirust agent, extreme pressure anti-wear additives are constituted, and percetage by weight shared by each raw material is：
2. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that each raw material institute Accounting for percetage by weight is：
3. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that the mineral Oil is 500SN mineral oil, and the silicone oil is methyl-silicone oil or methyl phenyl silicone oil.
4. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that described is thick Agent includes C16-C20Organic acid, C6-C12Binary organic acid and lithium hydroxide aqueous solution.
5. a kind of base oil compounding high temperature complex lithium grease according to claim 4, it is characterised in that the C16- C20Organic acid is 12- hydroxy stearic acids；C6-C12Binary organic acid be decanedioic acid, the concentration of lithium hydroxide aqueous solution is 7- The ratio between amount of 10wt%, 12- hydroxy stearic acid and lithium hydroxide material is 1:1, the ratio between amount of decanedioic acid and lithium hydroxide material For 1:2.
6. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that described is anti- Oxygen agent is amine antioxidants or phenolic antioxidant, or is phenolic antioxidant and mixing antioxygen of the amine antioxidants by any proportioning Agent, the phenolic antioxidant is 2,6- toluene di-tert-butyl phenols, alpha-Naphthol or four [β-(3,5- di-t-butyl -4- hydroxy benzenes Base) propionic acid] pentaerythritol ester；The amine antioxidants are diphenylamines.
7. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that described is anti- Rust agent is organic acid metal salt antirust agent, and organic acid metal salt antirust agent is one in Lanolin Calcium Soap and petroleum sulfonate Kind or two kinds, Lanolin Calcium Soap and the weight of petroleum sulfonate ratio are 1 when being two kinds:1-1:1.2.
8. a kind of base oil compounding high temperature complex lithium grease according to claim 1, it is characterised in that the extreme pressure Antiwear additive is two thio dialkyl amido salt.
9. a kind of base oil compounding high temperature complex lithium grease according to claim 8, it is characterised in that two thio two Alkyl amino salt is dibutyl dithiocaarbamate lead or dibutyl dithiocaarbamate molybdenum, or by dibutyl dithio Lead carbamate and dibutyl dithiocaarbamate molybdenum are mixed, described dibutyl dithiocaarbamate lead and two fourths The weight part ratio of base molybdenum dithiocarbamate mixing is (1-1.5):(1-1.5).
10. a kind of base oil as described in claim 4 or 5 compounds the preparation method of high temperature complex lithium grease, its feature It is, it comprises the following steps：
1) selection of raw material：The percetage by weight as shared by each raw material is：Mineral oil 47%-52%；Silicone oil 31%-35%；Thickening Agent 10%-19%；Antioxidant 1%-3%；Antirust agent 1%-2%；Extreme pressure anti-wear additives 0.5%-1.5%；Choose mineral oil, silicon Oil, thickening agent, antioxidant, antirust agent, extreme pressure anti-wear additives；
2) mixed base oil is used as after mixing mineral oil and silicone oil；
3) by C16-C20Organic acid, antirust agent, antioxidant add 1/3 mixed base oil in, be warming up to 100-105 DEG C of dissolving； Lithium hydroxide aqueous solution is added afterwards；Insulation carries out first step saponification, saponification time 1h；Add C6-C12Two First organic acid, carries out second step saponification, saponification time 0.5h；Saponification adds 1/3 mixed base oil after terminating, be warming up to 130- 140 DEG C, it is dehydrated, is further continued for being warming up to 160-220 DEG C of progress high temperature refining, the high temperature refining time is 10-20 minutes, then 1/3 mixed base oil is added as quench oil, and is stirred continuously；80 DEG C are cooled to, extreme pressure anti-wear additives is added, is cooled to room temperature and grinds Mill, obtains base oil compounding high temperature complex lithium grease.
CN201710249295.XA 2017-04-17 2017-04-17 A kind of base oil compounding high temperature complex lithium grease and preparation method thereof Pending CN106978236A (en)

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CN108300543A (en) * 2018-01-23 2018-07-20 合肥欧仕嘉机电设备有限公司 A kind of lubricating grease and preparation method thereof for speed reducer
CN108822929A (en) * 2018-03-30 2018-11-16 深圳市合诚润滑材料有限公司 A kind of braking automobile high temperature prevents seizing lubricating grease and preparation method thereof
CN111100730A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Metal soap-based 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

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108300543A (en) * 2018-01-23 2018-07-20 合肥欧仕嘉机电设备有限公司 A kind of lubricating grease and preparation method thereof for speed reducer
CN108822929A (en) * 2018-03-30 2018-11-16 深圳市合诚润滑材料有限公司 A kind of braking automobile high temperature prevents seizing lubricating grease and preparation method thereof
CN111100730A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Metal soap-based lubricating grease and preparation method thereof
CN111100730B (en) * 2018-10-25 2022-10-21 中国石油化工股份有限公司 Metal soap-based 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

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Application publication date: 20170725