CN107523378A - A kind of stability benzimidazole antioxidant for lubricating oil and preparation method thereof - Google Patents
A kind of stability benzimidazole antioxidant for lubricating oil and preparation method thereof Download PDFInfo
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- CN107523378A CN107523378A CN201710722967.4A CN201710722967A CN107523378A CN 107523378 A CN107523378 A CN 107523378A CN 201710722967 A CN201710722967 A CN 201710722967A CN 107523378 A CN107523378 A CN 107523378A
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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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/06—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic nitrogen-containing compound
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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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/12—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
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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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/05—Metals; Alloys
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
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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
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
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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
- 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
- C10M2227/04—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 having a silicon-to-carbon bond, e.g. organo-silanes
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- 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
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- 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
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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 relates to technical field of lubricating oil, more particularly to a kind of stability benzimidazole antioxidant for lubricating oil and preparation method thereof, the stability benzimidazole antioxidant for lubricating oil, is made up of the material of following parts by weight：20 ~ 50 parts of benzimidazole, 5 ~ 15 parts of metal dust, 8 ~ 12 parts of oil-soluble group, 3 ~ 6 parts of silane coupler, 2 ~ 6 parts of surfactant, 20 ~ 100 parts of organic solvent.Benzimidazole and metal dust are uniformly dispersed by the present invention in advance, then oil-soluble group is introduced into benzimidazole molecular structure, form one kind two and dredge ether benzimidazole, obtain that there is more stable antioxygen anti-corrosion and antiwear and friction reduction property than single thin ether benzimidazole by the two stability benzimidazole antioxidant dredged ether benzimidazole coating metal powder and formed, obtained benzimidazole antioxidant.
Description
Technical field
The present invention relates to technical field of lubricating oil, more particularly to a kind of stability benzimidazole antioxygen for lubricating oil
Agent and preparation method thereof.
Background technology
With technological progress, gear develops to small size, high-mechanic, high speed direction, and gear-box size and its lubricating oil hold
Amount constantly reduces, and frictional force and working oil temperature are in the trend stepped up between the flank of tooth, and this accelerates the friction mill of gear teeth face
Damage, have impact on the service behaviour of equipment.Therefore, the importance of gear lubrication increasingly shows, and it is excellent to usually require that lubricating oil has
Extreme pressure and antiwear behavior, load resistance can and suitable viscosity and good viscous warm nature, good thermal oxidation stability, anti-bubble
Property, water separable performance energy and rustless property, adhesiveness and shear stability etc., to realize the mill for reducing gear and other moving components
Damage and friction, scattered heat, prevent from corroding and get rusty, reduce work noise, the effect such as cleaning and extension gear life, meeting
The needs of various operating modes.
Oil ageing be one by oxygen and thermal initiation, and by the transition metal-catalyzed chemical process such as copper, iron, nickel,
External condition necessary to Motor Engine Cylinder just provides oil ageing reaction, can be regarded as a lubricating oil oxygen
Change reactor, it is therefore desirable to engine oil must possess good antioxygenic property, and with the development of engine technology,
It is also increasingly harsh to the performance requirement of lubricating oil, it is even more to propose very high requirement to antioxidant for lubricant oil.In many cases,
It has been difficult between meeting the performance requirement of lubricating oil product, it is necessary to further investigate different antioxidant to rely solely on single antioxidant
And the synergy between other additives and antioxidant, provide more comprehensive anti-oxidant scheme for lubricating oil product exploitation.
The antioxidant compound system with synergy of research at present and application comparative maturity includes：Aromatic amine and sulfur-bearing
Additive compound system；Aromatic amine and phenolic antioxidant compound system；Aromatic amine and organic molybdenum compound system；Borate
With aromatic amine compound system etc..In addition, also HMW aromatic amine compound and boron-containing dispersant compound system, this system
The effect of excellent antioxygen of lubricating oil can be assigned and mitigate oxidation greasy filth；The antioxygen of Chinese patent CN200510048003.3 reports
Agent system includes aromatic amine compound, 2.6- BHTs, tricresyl phosphate and benzotriazole fatty amine salt, this primary antibody
Oxygen system greatly improves the thermal oxidation stability of lubricating oil product, can be in long-term 100 DEG C, short-term 200 DEG C of uses.
It should be able to meet requirement as lubricating oil product, need to lubricate when usual plant equipment is run to reduce friction,
During use, lubricating oil product in by environment temperature, air oxygen and metal catalytic effect etc. factor influenceed easy oxidation deterioration,
The compound of the low molecule amounts such as alcohols, esters, ketone, acids is generated, the polymerization of HMW is further generated through polycondensation reaction
Thing, i.e. deposit, cause oil viscosity to raise, and greasy property is deteriorated, and abrasion increase, substantially reduce the function of lubricating oil, shorten
The service life of oil product, or even can heavy corrosion plant equipment.Therefore, oil oxidation stability is that oil property is particularly important
One index, all must be added with antioxidant component almost for all lubricating oil products.
According to oil ageing mechanism, conventional oil product antioxidant has radical chain terminator, such as phenol, amine type compound；
Peroxide decomposer, such as sulfide, containing sulfur phosphorus compound.At present, the dialkyl phosphoric acid used in I. C. engine oil
(ZDDP) antioxidant is a kind of multipurpose additive, there is prominent antioxidant effect and outstanding abrasion resistance.Due to environmental requirement, oil
Product tend to low ash and low-phosphorousization, thus the agent dosage is restricted, and is affected by it, the oil oxidation stability and oil product of oil product
Abrasion resistance also declines with the reduction of its dosage.
With preferable oxidation stability, higher viscosity index (VI), preferable thermal conductivity factor and excellent tribological property
Synthesizing ester oil be widely used in Aero-Space, auto industry and some extreme working conditions.With mechanized equipment
To high speed, heavy duty and the development of high-performance parameter, the operating mode of machinery lubrication system work is often increasingly harsher, and temperature is increasingly
It is high.Synthesizing ester oil uses at high temperature for a long time, degradation inevitably occurs, and then influence the normal operation of equipment.
Heterocycle kind antioxidant can use as metal deactivator mostly, and when the metallic compound of variable valency in lubricating oil, they can urge
Change hydroperoxides and resolve into free radical, so as to accelerated oxidation process.Heterocyclic compound and its derivative add as lubricating oil
Agent has good extreme pressure, wear-resistant and antifriction performance, high thermal stability and good antioxygenic property and anticorrosive property
Can, because having broad application prospects.
The content of the invention
Use for the esters oil antioxidant currently used for lubricating oil, inevitably aoxidized at high temperature for a long time
Decay, and then the defects of the normal operation of influence equipment, it is an object of the invention to provide a kind of stability benzene for lubricating oil
And imidazoles antioxidant and preparation method thereof, it has antioxygen anti-corrosion and antiwear and friction reduction property, improves the use effect of antioxidant
Rate.
To solve the above problems, the present invention uses following technical scheme：
A kind of stability benzimidazole antioxidant for lubricating oil, it is made up of following material：Benzimidazole, metal dust, oil
Soluble group, silane coupler, surfactant, organic solvent.The present invention is scattered equal by benzimidazole and metal dust in advance
It is even, oil-soluble group is then introduced into benzimidazole molecular structure, one kind two is formed and dredges ether benzimidazole, obtain by two
The stability benzimidazole antioxidant that ether benzimidazole coating metal powder is formed is dredged, obtained benzimidazole antioxidant is than single
Dredging ether benzimidazole has more stable antioxygen anti-corrosion and antiwear and friction reduction property.
In the present invention, the content of each material is an important factor for influenceing antioxidant properties, it is preferred that described is used to moisten
The stability benzimidazole antioxidant of lubricating oil, is made up of the material of following parts by weight：20 ~ 50 parts of benzimidazole, metal dust 5 ~
15 parts, 8 ~ 12 parts of oil-soluble group, 3 ~ 6 parts of silane coupler, 2 ~ 6 parts of surfactant, 20 ~ 100 parts of organic solvent.Further
Preferably, the described stability benzimidazole antioxidant for lubricating oil, is made up of the material of following parts by weight：Benzimidazole
30 ~ 45 parts, 6 ~ 12 parts of metal dust, 8 ~ 10 parts of oil-soluble group, 3 ~ 5,3 ~ 5 parts of silane coupler, 3 ~ 5 parts of surfactant,
40 ~ 80 parts of organic solvent.
In the present invention, by being coated to metal dust, the oxidation of metal dust is avoided, it is anti-oxidant so as to improve its
Property, it is preferred that the metal dust is at least one of aluminium powder, nickel powder, zinc powder, magnesium powder, cobalt powder, silver powder, bronze.
The size of metal dust is an important factor for influenceing the antioxygenic property of antioxidant, it is preferred that the metal powder
The particle diameter at end is 5 ~ 20 microns.
Silane coupler can promote benzimidazole to carry out cross-linking reaction with oil-soluble group, it is preferred that the silane is even
Connection agent is positive decyl trimethoxy silane, positive decyl triethoxysilane, positive decyl trichlorosilane, n-octyl trimethoxy silicon
Alkane, n-octytriethoxysilane, n-octyl trichlorosilane, dodecyltrimethoxysilane, dodecyl triethoxysilicane
Alkane, dodecyltrichlorosilane, 17 fluorine decyl trimethoxy silanes, 17 fluorine decyl triethoxysilanes, 17 fluorine decyls
It is trichlorosilane, ten trifluoro octyl group trimethoxy silanes, tridecafluoro-n-octyltriethoxysilane, ten trifluoro decyltrichlorosilanes, complete
Fluorine dodecyltrimethoxysilane, perfluorododecyl triethoxysilane, perfluorododecyl trichlorosilane or trifluoropropyl
At least one of base trimethoxy silane.
The present invention carries out hydrophobically modified by oil-soluble group to benzimidazole, it is preferred that the oil-soluble group is ten
At least one of glycol APEO, tetradecyl alchohol APEO, hexadecanol APEO.
Surfactant can reduce the surface free energy of material, and the surfactant is nonionic surfactant.
It is further preferred that the nonionic surfactant is ester type surfactant, ether type surfactant, amine type surface-active
At least one of agent, acid amide type surfactant and ester-ether type surfactant.It is specific as follows：Ester type surfactant can be with
For at least one of sorbitan fatty acid ester and polyoxyethylene fatty acid ester etc..Ether type surfactant can be polyoxy
At least one of vinyl alkyl alcohol ether and polyethenoxy alkylphenols etc..Amine surfactant can be Polyoxyethylene fatty
Amine etc..Acidamide surfactant can be such as polyoxyethylate amide.Ester ether surface active agent can be sorbitan esters of fatty
Acid ester polyoxyethylene ether type (tween type) etc..It is preferred that sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene fat
Fat amine, polyoxyethylate amide or APEO, more preferred polyoxyethylene fatty amine, polyoxyethylate amide or polyoxyethylene
Ether.Fat in wherein described fatty acid ester, fatty amine refers to C2-C4 straight-chain hydrocarbons.In alkyl alcohol ether, alkylbenzene phenolic ether
Alkyl is C2-C4 straight-chain hydrocarbons.
Organic solvent can improve the uniformity of material mixing, and the present invention does not have special want to the species of organic solvent
Ask, can be example well known to the art personnel as long as can play a part of and dissolve ultra-violet absorber
Such as, the organic solvent is acetone, DMF, 1-METHYLPYRROLIDONE, DMA, dimethyl
Acetamide, dichloromethane, triethyl phosphate, acetone, chloroform, toluene, ethanol, acetic acid, ethyl acetate, formic acid, chloroform, four
At least one of hydrogen furans and dimethyl sulfoxide (DMSO).
The present invention also provides a kind of preparation method of the stability benzimidazole antioxidant for lubricating oil, including following step
Suddenly：
（1）Benzimidazole, surfactant and metal dust are uniformly dispersed in a solvent, obtain mixed system；
（2）To step（1）Mixed system in add oil-soluble group and silane coupler, at 60 ~ 120 DEG C reduced-pressure backflow 2 ~
5h, room temperature is subsequently cooled to, stands 1 ~ 2 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
A kind of stability benzimidazole antioxidant for lubricating oil of the invention and preparation method thereof, with prior art phase
Than, its protrude the characteristics of and excellent effect be：
Benzimidazole and metal dust are uniformly dispersed by the present invention in advance, then introduce oil-soluble into benzimidazole molecular structure
Group, form one kind two and dredge ether benzimidazole, obtain by two stability dredged ether benzimidazole coating metal powder and formed
Benzimidazole antioxidant, obtained benzimidazole antioxidant have more stable antioxygen anti-corrosion than single thin ether benzimidazole
And antiwear and friction reduction property.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 38 parts of imidazoles, 8 parts of aluminium powder, 9 parts of Dodecyl Polyoxyethylene Ether, 4 parts of positive decyl trimethoxy silane, ester type surfactant 4
Part, 60 parts of organic solvent.；
The particle diameter of described aluminium powder is 15 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ester type surfactant is uniformly dispersed in a solvent with aluminium powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter Dodecyl Polyoxyethylene Ether and positive decyl trimethoxy silane, the reduced-pressure backflow 3h at 80 DEG C, be subsequently cooled to room temperature, stand
1 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 2
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 35 parts of imidazoles, 9 parts of aluminium powder, 9 parts of Dodecyl Polyoxyethylene Ether, 4 parts of positive decyl triethoxysilane, ester type surfactant 4
Part, 50 parts of organic solvent.；
The particle diameter of described aluminium powder is 18 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ester type surfactant is uniformly dispersed in a solvent with aluminium powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter Dodecyl Polyoxyethylene Ether and positive decyl triethoxysilane, the reduced-pressure backflow 4h at 90 DEG C, be subsequently cooled to room temperature, stand
1 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 3
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 30 parts of imidazoles, 6 parts of nickel powder, 8 parts of tetradecyl alchohol APEO, 3 parts of positive decyl trimethoxy silane, ether type surfactant 3
Part, 40 parts of organic solvent.；
The particle diameter of described nickel powder is 5 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ether type surfactant is uniformly dispersed in a solvent with nickel powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter tetradecyl alchohol APEO and positive decyl triethoxysilane, the reduced-pressure backflow 2h at 120 DEG C, be subsequently cooled to room temperature, it is quiet
Put 1 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 4
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 45 parts of imidazoles, 12 parts of zinc powder, 10 parts of tetradecyl alchohol APEO, 5 parts of positive decyl triethoxysilane, ether type surfactant
5 parts, 80 parts of organic solvent.；
The particle diameter of described zinc powder is 20 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ether type surfactant is uniformly dispersed in a solvent with zinc powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter tetradecyl alchohol APEO and positive decyl trimethoxy silane, the reduced-pressure backflow 5h at 60 DEG C, be subsequently cooled to room temperature, stand
2 days, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 5
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 21 parts of imidazoles, 6 parts of magnesium powder, 9 parts of hexadecanol APEO, 4 parts of n-octyl trimethoxy silane, ester type surfactant 3
Part, 30 parts of organic solvent；
The particle diameter of described magnesium powder is 6 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ester type surfactant is uniformly dispersed in a solvent with magnesium powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter hexadecanol APEO and n-octyl trimethoxy silane, the reduced-pressure backflow 3h at 70 DEG C, be subsequently cooled to room temperature, stand
1 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 6
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 24 parts of imidazoles, 8 parts of cobalt powder, 9 parts of hexadecanol APEO, 5 parts of dodecyl triethoxysilane, amine surfactant
4 parts, 30 parts of organic solvent；
The particle diameter of described cobalt powder is 8 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Amine surfactant is uniformly dispersed in a solvent with cobalt powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter hexadecanol APEO and dodecyl triethoxysilane, the reduced-pressure backflow 5h at 70 DEG C, be subsequently cooled to room temperature, it is quiet
Put 2 days, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Embodiment 7
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 20 parts of imidazoles, 5 parts of silver powder, 8 parts of Dodecyl Polyoxyethylene Ether, 3 parts of 17 fluorine decyltrichlorosilane, amine surfactant 2
Part, 20 parts of organic solvent；
The particle diameter of described silver powder is 5 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Amine surfactant is uniformly dispersed in a solvent with silver powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter Dodecyl Polyoxyethylene Ether and 17 fluorine decyltrichlorosilanes, the reduced-pressure backflow 2h at 60 DEG C, be subsequently cooled to room temperature, stand
1 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
Comparative example 1：
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 38 parts of imidazoles, 8 parts of aluminium powder, 4 parts of positive decyl trimethoxy silane, 4 parts of ester type surfactant, 60 parts of organic solvent.；
The particle diameter of described iron powder is 15 microns；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ester type surfactant is uniformly dispersed in a solvent with aluminium powder, obtains mixed system；（2）To step（1）Mixed system in plus
Enter positive decyl trimethoxy silane, the reduced-pressure backflow 3h at 80 DEG C, be subsequently cooled to room temperature, stand 1 day, that is, obtain being used to lubricate
The stability benzimidazole antioxidant of oil.
Comparative example 2：
A kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：Benzene
And 38 parts of imidazoles, 9 parts of Dodecyl Polyoxyethylene Ether, 4 parts of positive decyl trimethoxy silane, 4 parts of ester type surfactant, You Jirong
60 parts of agent.；
This is used for the preparation method of the stability benzimidazole antioxidant of lubricating oil, comprises the following steps：（1）By benzimidazole,
Ester type surfactant is uniformly dispersed in a solvent, obtains mixed system；（2）To step（1）Mixed system in add 12
Alcohol APEO and positive decyl trimethoxy silane, the reduced-pressure backflow 3h at 80 DEG C, room temperature is subsequently cooled to, stands 1 day, i.e.,
Obtain the stability benzimidazole antioxidant for lubricating oil.
Test：
The antioxidant of embodiment 1 ~ 7 and comparative example 1 ~ 2 is added in the 5W/30SJ machine oil of commercial distribution respectively, wherein antioxidant
Addition be the lubricating oil 3%, carry out rotary oxygen bomb (BROT), experimental result is as shown in table 1.
Table 1：
| Sample | Oxidation induction period（min） |
| Embodiment 1 | 6250 |
| Embodiment 2 | 5870 |
| Embodiment 3 | 5610 |
| Embodiment 4 | 5430 |
| Embodiment 5 | 5120 |
| Embodiment 6 | 4800 |
| Embodiment 7 | 4630 |
| Comparative example 1 | 2870 |
| Comparative example 2 | 3110 |
| 5W/30SJ gasoline engine oils | 2000 |
Claims (9)
1. a kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that be made up of the material of following parts by weight：
20 ~ 50 parts of benzimidazole, 5 ~ 15 parts of metal dust, 8 ~ 12 parts of oil-soluble group, 3 ~ 6 parts of silane coupler, surfactant 2 ~ 6
Part, 20 ~ 100 parts of organic solvent.
2. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that by following heavy
The material of amount part is made：30 ~ 45 parts of benzimidazole, 6 ~ 12 parts of metal dust, 8 ~ 10 parts of oil-soluble group, silane coupler 3 ~ 5
Part, 3 ~ 5 parts of surfactant, 40 ~ 80 parts of organic solvent.
3. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that the metal
Powder is at least one of aluminium powder, nickel powder, zinc powder, magnesium powder, cobalt powder, silver powder, bronze.
4. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that the metal
The particle diameter of powder is 5 ~ 20 microns.
5. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that the silane
Coupling agent is positive decyl trimethoxy silane, positive decyl triethoxysilane, positive decyl trichlorosilane, n-octyl trimethoxy silicon
Alkane, n-octytriethoxysilane, n-octyl trichlorosilane, dodecyltrimethoxysilane, dodecyl triethoxysilicane
Alkane, dodecyltrichlorosilane, 17 fluorine decyl trimethoxy silanes, 17 fluorine decyl triethoxysilanes, 17 fluorine decyls
It is trichlorosilane, ten trifluoro octyl group trimethoxy silanes, tridecafluoro-n-octyltriethoxysilane, ten trifluoro decyltrichlorosilanes, complete
Fluorine dodecyltrimethoxysilane, perfluorododecyl triethoxysilane, perfluorododecyl trichlorosilane or trifluoropropyl
At least one of base trimethoxy silane.
6. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that the oil is molten
Property group be Dodecyl Polyoxyethylene Ether, tetradecyl alchohol APEO, at least one of hexadecanol APEO.
7. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that the surface
Activating agent is ester type surfactant, ether type surfactant, amine surfactant, acid amide type surfactant and ester-ether type
At least one of surfactant.
8. the stability benzimidazole antioxidant according to claim 1 for lubricating oil, it is characterised in that described organic
Solvent is acetone, DMF, 1-METHYLPYRROLIDONE, DMA, dimethyl acetamide, dichloro
Methane, triethyl phosphate, acetone, chloroform, toluene, ethanol, acetic acid, ethyl acetate, formic acid, chloroform, tetrahydrofuran and two
At least one of methyl sulfoxide.
9. the preparation method of a kind of stability benzimidazole antioxidant for lubricating oil, it is characterised in that comprise the following steps：
（1）Benzimidazole, surfactant and metal dust are uniformly dispersed in a solvent, obtain mixed system；
（2）To step（1）Mixed system in add oil-soluble group and silane coupler, at 60 ~ 120 DEG C reduced-pressure backflow 2 ~
5h, room temperature is subsequently cooled to, stands 1 ~ 2 day, that is, obtain the stability benzimidazole antioxidant for lubricating oil.
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