CN106147936A - A kind of lubricant composition and preparation method thereof - Google Patents
A kind of lubricant composition and preparation method thereof Download PDFInfo
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- CN106147936A CN106147936A CN201510189204.9A CN201510189204A CN106147936A CN 106147936 A CN106147936 A CN 106147936A CN 201510189204 A CN201510189204 A CN 201510189204A CN 106147936 A CN106147936 A CN 106147936A
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Abstract
The present invention relates to grease field, specifically provide a kind of lubricant composition and preparation method thereof.Described lubricant composition contains base oil and the nitrile rubber particle with cross-linked structure prepared by cross-linking radiation method being dispersed in described base oil, described base oil is continuous phase, described nitrile rubber particle is dispersion phase, and relative to the described base oil of 100 weight portions, the content of described nitrile rubber particle is 10-180 weight portion.The lubricant composition that the present invention provides can regulate viscosity effectively along with the change of temperature, temperature limit width, compared with the lubricant composition containing the nitrile rubber particle obtained by peroxide crosslinking, its kinematic viscosity when 40 DEG C is relatively low, and kinematic viscosity is higher when 100 DEG C.Additionally, the lubricant composition that the present invention provides also has the antiwear and friction reduction property of excellence.
Description
Technical field
The present invention relates to a kind of lubricant composition, the preparation method of described lubricant composition and by this
The lubricant composition that method prepares.
Background technology
Grease is usually and is dispersed in one or more lube base oils by thickening agent, and through saponification
Reaction and obtain semisolid, kollag.Common grease thickener is divided into soap base, non-soap base
And hydrocarbyl type, soap base thickening agent mostly is soap, such as stearic acid calcium salt, 12-hydroxy stearic acid calcium
Salt, non-soap base thickening agent then includes organic polyureas, inorganic compound etc., and alkyl thickening agent is usually paraffin
Class.The grease using above-mentioned thickening agent to prepare typically can meet commonly used demand, but along with the modern times
Industrial boom, PERFORMANCE OF GREASES is required more and more higher by the high-grade, precision and advanced plant equipment continued to bring out, and needs
Meet broader use temperature range, more high shear rates, bigger load-up condition etc..Thus, novel
The exploitation of grease thickener or compound additive is in widespread attention.
Nano material refers to the solid material being made up of the ultrafine dust being smaller in size than 100 nanometers.Due to it
There is the features such as specific surface area is big, good dispersion, easy-sintering, hardness are big, and there is good antifriction
Compressive property and nanoparticle have certain repair to wear surface, and therefore, it can improve lube system
The service life of system.Additionally, just because of use the lubricating oil prepared of nano material additive, grease anti-
Mirror good tribological property, utilize nano material additive to prepare high-performance grease and have well
Prospect.
Prior art has had the report of a large amount of application about inorganic nano-particle in grease field
Road.Such as, CN104046407A discloses a kind of lubricating oil (fat) antiwear and antifriction compound additive, its
Consist of oxide nano rare earth Coated white mica, add base oil or lubrication with the ratio of 0.5-3%
In fat, i.e. can significantly reduce coefficient of friction, reduce wear scar diameter.CN104031717A discloses one
Planting aluminium nitride and copper mixing nanometer lubricating grease additive, this compound additive particle size range is
50-200nm.The grease using this additive to prepare has good antiwear and friction reduction property, and coefficient of friction can
Reduce 23.6-15.8%, 6-7 times can be extended friction durability.CN103525513A discloses a kind of high temperature
Lubricant composition and preparation method, wherein use boron nitride micropowder as thickening agent, with graphite microparticles and
MCA (melamine cyanurate) is as extreme pressure anti-wear additives, and the grease of preparation has the high temperatures of excellence
Energy, extreme pressure and antiwear behavior and oxidation stability.Although by adding the grease that inorganic nano material obtains
Compositions has high temperature resistant, pressure, the anti-wear performance of excellence, but life-time service easily sinters and remains in
Friction surface, affects lubricant effect.Additionally, most inorganic nano additives need to join with conventional thickening agent
Closing and use, the PERFORMANCE OF GREASES being prepared out can be improved, and therefore adds manufacture and uses
Cost.
Additionally, in addition to inorganic nano-particle, also have some to lead at grease about organic fine particles gel
The report of the application in territory.Such as, the patent of Rhein Chemie Rheinau GmbH's application
CN1856527A, CN1840622A and CN1861673A disclose a kind of non-crosslinkable organic
Micro gel in medium and the micro gel of crosslinking are for the temperature of modified non-crosslinked organic media
Degree relies on the purposes of performance.But, this several patents application is pointed out bar none, described micro gel
Be all use chemical crosslinking mode (such as, by with polyfunctional compound's crosslinking copolymerization or passed through
Oxide cross-links) micro gel for preparing rather than the micro gel with high-energy radiation crosslinking.On
State the micro gel that patent application thinks that high-energy radiation cross-links to be actually unable in preparing on an industrial scale, radiation
Property cobalt source the using with serious safety problem, and by the micro gel of crosslinking with radiation of high-energy radiation
Time in plastic matrix, can occur to tear effect between substrate and dispersion phase, thus compromise and contain
There are the mechanical performance of the plastics of this micro gel, swelling behavior, stress corrosion cracking performance etc..But,
Rhein Chemie Rheinau GmbH application patent CN1856527A, CN1840622A and
The viscosity temperature characteristic of the lubricant composition disclosed in CN1861673A is poor, gluing of this lubricant composition
Spend along with the reduction of temperature can be increased dramatically, and along with the rising of temperature can strongly reduce, but at low temperature
Lower viscosity is excessive or the at high temperature too small application the most not utilizing lubricant composition of viscosity, and this will be very
The application of this lubricant composition is limited in big degree.Therefore, need exploitation one badly and have the most viscous
The lubricant composition of warm nature energy.
Summary of the invention
The invention aims to the defect overcoming existing lubricant composition viscosity temperature characteristic poor, and
There is provided a kind of and there is the lubricant composition of excellent viscosity temperature characteristic, the preparation method of a kind of lubricant composition
And the lubricant composition prepared by the method.
The present inventor finds after further investigation, Rhein Chemie Rheinau GmbH's application
Grease group disclosed in above-mentioned several patents CN1856527A, CN1840622A and CN1861673A
Dispersion phase in compound is to use polyfunctional compound or peroxide to be obtained by chemical crosslinking mode
Micro gel, although the lubricant composition containing this microgel particle can reduce organic to a certain extent
The coefficient of friction of medium, but the viscosity of these lubricant compositions is influenced by temperature relatively big, and temperature is too
High (viscosity is the least) or the lowest (viscosity is the biggest) all can limit the use of this lubricant composition, is suitable for
Temperature range is narrower.And the rubber particles with cross-linked structure prepared by cross-linking radiation method with pass through
Polyfunctional compound or peroxide is used to carry out the rubber grain with cross-linked structure of chemical crosslinking preparation
Son has diverse microstructure.When the dispersion phase in lubricant composition is by cross-linking radiation side
When prepared by method has the nitrile rubber particle of cross-linked structure, corresponding lubricant composition has good
Viscosity temperature characteristic, it is possible to very well regulate viscosity along with the change of temperature, reduces low temperature viscosity and improves
High temperature viscosity, therefore, it can make up the impact caused viscosity due to the change of temperature to a great extent.
Additionally, high-energy radiation the most very cleaning, safety and the efficient energy, the most by a lot of flourishing
Country is widely used for the fields such as health care, food processing, commercial production, is to use chemistry to hand on the contrary
There is some very important problems, as the highest in production efficiency, peroxide in linked method (peroxide)
Residual and the environmental pollution etc. that may cause, these all can limit its application.Based on this, complete this
Invention.
Specifically, the invention provides a kind of lubricant composition, wherein, described lubricant composition contains
Have base oil and be dispersed in described base oil by prepared by cross-linking radiation method, there is cross-linked structure
Nitrile rubber particle, described base oil is continuous phase, and described nitrile rubber particle is dispersion phase, and phase
For the described base oil of 100 weight portions, the content of described nitrile rubber particle is 10-180 weight portion.
Present invention also offers the preparation method of a kind of lubricant composition, the method is by base oil and passes through
The nitrile rubber particle to be disperseed of cross-linked structure that prepared by cross-linking radiation method have mixes and disperses,
And relative to the described base oil of 100 weight portions, described in the consumption of nitrile rubber particle to be disperseed be
10-180 weight portion.
Present invention also offers the lubricant composition prepared by said method.
The lubricant composition that the present invention provides can regulate viscosity effectively along with the change of temperature, viscous temperature
Excellent performance, nitrile rubber particle therein disperses up to nanoscale, and makes base oil keep stablizing not
It is easy to run off, therefore, the temperature limit width of this lubricant composition, still can under high temperature high shear
Enough keep viscosity higher, it is possible to meet the lubricating requirement of 100 DEG C of temperature occasions used above, be suitable for all
The field of grease applications, especially temperature are higher, antiwear and antifriction requires high field, such as heavy load machine
Tool, the lubrication occasion running equipment steady in a long-term, and can also compounding with other lubricating additives use,
Prepare special lubricant composition.Additionally, the antiwear and antifriction of the lubricant composition of present invention offer
Can be excellent, nanoscale scattered nitrile rubber particle both can improve the wearability of lubricant composition, again
Similar micro-bearing effect can be played, thus increase rolling friction and reduce interface friction force.
Owing to cross-linking radiation makes the special construction that rubber particles had, the grease composition that the present invention provides
The ageing-resistant performance of thing is excellent, and the most easy to change, the most this lubricant composition can be as excellent performance
Grease use, be especially applicable to the viscosity temperature characteristic to lubricating oil system, ageing properties and frictional property
Higher field can be required.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with
Detailed description below is used for explaining the present invention together, but is not intended that limitation of the present invention.?
In accompanying drawing:
The infrared spectrogram of a kind of nitrile rubber particle that Fig. 1 provides for the present invention.
Detailed description of the invention
Hereinafter the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The lubricant composition that the present invention provides contains base oil and is dispersed in passing through in described base oil
Prepared by cross-linking radiation method has the nitrile rubber particle of cross-linked structure, and described base oil is continuous phase,
Described nitrile rubber particle is dispersion phase.Wherein, described nitrile rubber particle divides in stable in base oil
Bulk state, and relative to the described base oil of 100 weight portions, the content of described nitrile rubber particle is
10-180 weight portion.
The lubricant composition provided according to the present invention, as discussed previously with respect to described in 100 weight portions
Base oil, the content of described nitrile rubber particle is 10-180 weight portion, but so that base oil and
Nitrile rubber particle plays more preferable coordinated effect, and and then makes the lubricant composition obtained have
Preferably viscosity temperature characteristic, it is preferable that relative to the described base oil of 100 weight portions, described nitrile rubber
The content of particle is 10-160 weight portion, more preferably 10-120 weight portion.
The lubricant composition provided according to the present invention, it is preferable that the average particle of described nitrile rubber particle
Footpath is 20-2000nm, more preferably 50-1000nm, particularly preferred 70-500nm.When by described butyronitrile
When the mean diameter of rubber particles controls within the above range, it is possible to more effectively regulate lubricant composition
Viscosity, be suitable for broader use temperature range.
The lubricant composition provided according to the present invention, it is preferable that the gel of described nitrile rubber particle contains
Amount is more than 60 weight %, more than more preferably 75 weight %, more than particularly preferably 80 weight %.
When the gel content of described nitrile rubber particle is controlled within the above range, it is possible to along with the change of temperature
Change the viscosity more effectively regulating lubricant composition, be suitable for broader use temperature range.At this
In bright, described gel content be this area for characterizing a kind of Common Parameters of rubber cross degree, it is pressed
Record according to the method disclosed in CN1402752A.
In the present invention, described nitrile rubber particle can be to be obtained not with acrylonitrile compolymer by butadiene
Modified rubber particle, it is also possible to the modified rubber obtained with acrylonitrile and other olefin-copolymerizations for butadiene
Particle.Wherein, the kind of other alkene described can be selected according to the composition of target nitrile rubber particle
Selecting, all can know these those skilled in the art, therefore not to repeat here.When described nitrile rubber particle is
During modified butadiene acrylonitrile rubber particle, it is preferably the modified butadiene acrylonitrile rubber particle containing carboxyl and/or ester group (i.e.,
Described nitrile rubber particle is obtained by butadiene, acrylonitrile and the olefin-copolymerization containing carboxyl and/or ester group
Arrive), such as, carboxy terminated nitrile rubber particle.In described nitrile rubber particle, acrylonitrile unit unit
Content can be 1-70 weight %, preferably 5-70 weight %.
Additionally, the nitrile rubber particle that the present invention provides is preferably equal phase structure.In the present invention, described
" equal phase structure " refer under existing microtechnique observe, do not find in nitrile rubber particle layering,
The phenomenon that split-phase etc. are the most homogeneous.
The lubricant composition provided according to the present invention, the high-energy ray source used by described cross-linking radiation is permissible
At least one in cobalt source, ultraviolet, high-energy electron accelerator, it is preferable that described high-energy ray source
Wavelength less than 0.1 μm, for example, cobalt source.Additionally, generally, the dosage of irradiation should make rubber
The gel content of the nitrile rubber particle after glue latex cross-linking radiation reaches more than 60 weight %, preferably up to
More than 75 weight %, more than more preferably up to 80 weight %.Specifically, the dosage of irradiation can be
0.1-30Mrad, preferably 0.5-20Mrad.
The kind of described base oil is not particularly limited by the present invention, can be mineral base oil, it is possible to
Think synthetic base oil, it is also possible to for the mixture of both the above base oil.
Described mineral base oil carries out division according to China base oil criteria for classification QSHR 001-95 and includes:
Low-viscosity index mineral base oil (viscosity index (VI) VI≤40), middle viscosity index (VI) mineral base oil (40 ＜
Viscosity index (VI) VI≤90), high viscosity index (HVI) mineral base oil (90 ＜ viscosity index (VI) VI≤120), the highest
Viscosity index (VI) mineral base oil (120 ＜ viscosity index (VI) VI≤140) and superhigh viscosity index mineral base
Oil (viscosity index (VI) VI ＞ 140) five class base oil.And according to GB/T1995-1998 national standard " stone
Oil product viscosity index (VI) calculates method " defined, viscosity index (VI) (VI) represents that oil viscosity varies with temperature
One of this feature about quantitative values.For the oil product that kinematic viscosity is close, viscosity index (VI) is the highest, represents
Oil viscosity varies with temperature the least.Specifically, described mineral base oil mainly include alkane, cycloalkane,
Aromatic hydrocarbons, cycloalkanes aromatic hydrocarbons and oxygen-containing, nitrogenous, organic compounds containing sulfur and the non-hydrocarbonylation such as colloid, asphalitine
Compound, wherein almost without alkene.Described mineral base oil can be by high boiling point, height in crude oil relatively
The hydro carbons of molecular mass and the mixture of non-hydrocarbons through air-distillation/decompression distillation, solvent refining, dewaxing,
The techniques such as depitching prepare.From the point of view of mineral base oil distillate, its hydro carbons carbon number distribution is generally C20-C40,
Boiling spread is about 300-550 DEG C, and relative molecular mass is 250-1000 or higher.
Described synthetic base oil be then typically with prepared by methodology of organic synthesis, there is stable chemical constitution
Lubricating oil with property.Described synthetic base oil is selected from synthesizing hydrocarbon, alkylaromatic hydrocarbon, synthetic ester, gathering
Ether, halogenated hydrocarbons, polysiloxanes and at least one contained in fluorocarbon oil.The synthetic base oil of above-mentioned each kind
Can be single pure material or the mixture being made up of homologue.Wherein, described synthesis hydrocarbon is low selected from ethylene
Polymers, propylene oligomer, polybutene, polyisobutylene, poly alpha olefin (PAO), poly internal olefins hydrocarbon and on
State at least one in the halogenated product of synthesis hydrocarbon.Wherein, described poly alpha olefin do not include ethylene low polymer,
Propylene oligomer and poly 1-butene.Described alkylaromatic hydrocarbon is selected from alkylbenzene, alkylnaphthalene and contains hetero atom
At least one in the alkylaromatic hydrocarbon of (oxygen, sulfur, halogen etc.).Described synthetic ester selected from monoesters, dibasic acid esters,
Polyol ester, polymer esters, carbonic ester, phosphate ester, citrate, esters of silicon acis and olefin-propylene
At least one in esters of gallic acid copolymer.Described polyethers is selected from aliphatic polyether, polyphenylene oxide, poly-polythiaether
With at least one in perfluoroalkyl polyethers.Described polysiloxanes selected from two polysiloxanes, cyclotrisiloxane,
At least one in four polysiloxanes, eight polysiloxanes and the poly-tetrasiloxane of ring.
Additionally, the lubricant composition that the present invention provides can also be containing conventional additive.Described interpolation
The kind of agent includes but not limited to: age resistor, antiwear additive, antilubricant, antioxidant, anti-foaming agent, antirust
Agent, detersive, dispersant, pigment, extreme pressure composition, friction protection compositions, detersive, coupling
At least one in agent etc..The consumption of described additive can be the conventional selection of this area, to this ability
Field technique personnel all can know, therefore not to repeat here.
The preparation method of the lubricant composition that the present invention provides includes base oil and passes through cross-linking radiation
The nitrile rubber particle to be disperseed of cross-linked structure that prepared by method have mixes and disperses, and relative to
The described base oil of 100 weight portions, described in the consumption of nitrile rubber particle to be disperseed be 10-180 weight portion.
According to the preparation method of the lubricant composition that the present invention provides, as discussed previously with respect to 100 weights
The described base oil of amount part, described in the consumption of nitrile rubber particle to be disperseed be 10-180 weight portion, but
So that base oil and nitrile rubber particle to be disperseed play more preferable coordinated effect, and and then make
The lubricant composition obtained has more preferable viscosity temperature characteristic, it is preferable that relative to the institute of 100 weight portions
State base oil, described in the consumption of nitrile rubber particle to be disperseed be 10-160 weight portion, particularly preferably
10-120 weight portion.
The preparation method of lubricant composition provided according to the present invention, it is preferable that described in butyronitrile to be disperseed
Rubber particles is for being 20-2000nm by mean diameter, being more preferably 50-1000nm, particularly preferably
The nitrile rubber particle aggregation of 70-500nm and the rubber particles group that formed.When by described butyronitrile to be disperseed
After rubber particles is dispersed in base oil, the nitrile rubber particle of reunion can be disperseed well,
Thus with 20-2000nm, preferably with 50-1000nm, more preferably divide with the mean diameter of 70-500nm
Cloth is in base oil.The mean diameter of nitrile rubber particle to be disperseed described in additionally, is preferably
20-2000nm, more preferably 50-1000nm, particularly preferably 70-500nm.
The preparation method of lubricant composition provided according to the present invention, it is preferable that described in butyronitrile to be disperseed
The gel content of rubber particles is more than 60 weight %, more than more preferably 75 weight %, particularly preferably
It is more than 80 weight %.When the gel content of described nitrile rubber particle to be disperseed is controlled at above-mentioned model
When enclosing interior, it is possible to along with the change of temperature more effectively regulates the viscosity of lubricant composition, be suitable for more
Wide use temperature range.
Described nitrile rubber particle to be disperseed is preferably equal phase structure.In the present invention, described " homogeneously tie
Structure " refer to observe under existing microtechnique, do not find layering in nitrile rubber particle to be disperseed, divide
The most homogeneous equal phenomenon.
Described nitrile rubber particle to be disperseed can be to be passed through spoke by Butadiene and Acrylonitrile copolymer emulsion
According to crosslinking preparation and wait to disperse unmodified nitrile rubber particle by what spray drying method obtained after drying, also
Can be butadiene with acrylonitrile and other olefin copolymer emulsions be prepared by cross-linking radiation and passes through
What spray drying method obtained after drying treats disperse modified nitrile rubber particle.Wherein, described other alkene
Kind can select, to this people in the art according to the composition of target nitrile rubber to be disperseed particle
Member all can know, therefore not to repeat here.When described nitrile rubber particle to be disperseed is for treating disperse modified butyronitrile
During rubber particles, it is preferably treats disperse modified nitrile rubber particle (i.e., containing carboxyl and/or ester group
Described nitrile rubber particle to be disperseed is total to by butadiene, acrylonitrile and the alkene containing carboxyl and/or ester group
Copolymer emulsion is prepared by cross-linking radiation and is obtained by spray drying), such as, carboxyl butyronitrile to be disperseed
Rubber particles.
In the preparation process of described nitrile rubber particle to be disperseed, the high-energy ray source used by cross-linking radiation
Specifically can be selected from least one in cobalt source, ultraviolet, high-energy electron accelerator, it is preferable that described height
0.1 μm, for example, cobalt source can be less than by radiogenic wavelength.Additionally, generally, the dosage of irradiation
The gel content that should make the nitrile rubber particle after rubber latex cross-linking radiation reaches more than 60 weight %,
Preferably reach more than 75 weight %, more than more preferably up to 80 weight %.Specifically, the dosage of irradiation
Can be 0.1-30Mrad, preferably 0.5-20Mrad.
Described nitrile rubber particle to be disperseed can be commercially available, it is also possible to public according to art technology
The various methods known prepare.Such as, nitrile rubber particle to be disperseed described in can be according to the present invention
The international patent application WO01/40356 (priority date submitted for 18th in JIUYUE in 2000 of applicant
On December 3rd, 1999) and applicant of the present invention in June 15 calendar year 2001 submit international specially
Method disclosed in profit application WO01/98395 (priority date on June 15th, 2000) prepares
Powder nbr rubber particles.The nitrile rubber particle to be disperseed prepared by said method be after drying without
With interleaving agent the most free flowable rubber micropowder, each of which rubber particle is all homogeneous, the most singly
Individual microgranule is the most all homogenizing, does not find to divide under the observation of existing microtechnique in microgranule
The most homogeneous phenomenons such as layer, split-phase.This powdered rubber is by by corresponding rubber latex cross-linking radiation
The particle diameter of rubber particles is fixed.
Additionally, in the cross-linking radiation preparation process of described nitrile rubber particle to be disperseed, can not use
Crosslinking coagent, it is possible to use crosslinking coagent.Described crosslinking coagent can be selected from simple function group crosslinking coagent,
More than two functional group's crosslinking coagents, trifunctional crosslinking coagent, four-functional group crosslinking coagent and five functional groups
Any one in crosslinking coagent.The example of described simple function group crosslinking coagent includes but not limited to: (first
Base) 1-Octyl acrylate, (methyl) Isooctyl acrylate monomer, in (methyl) glycidyl acrylate extremely
Few one；The example of described two functional group's crosslinking coagents includes but not limited to: 1,4-butanediol two (methyl)
Acrylate, 1,6-HD two (methyl) acrylate, diethylene glycol two (methyl) acrylate,
Triethylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, divinylbenzene
In at least one；The example of described trifunctional crosslinking coagent includes but not limited to: trimethylolpropane
Three (methyl) acrylate and/or tetramethylolmethane three (methyl) acrylate；Described four-functional group cross-links
The example of auxiliary agent includes but not limited to: tetramethylolmethane four (methyl) acrylate and/or ethoxyquin Ji Wusi
Alcohol four (methyl) acrylate；The example of the described five above crosslinking coagents of functional group includes but not limited to:
Dipentaerythritol five (methyl) acrylate.In this article, described (methyl) acrylate refers to third
Olefin(e) acid ester or methacrylate.These crosslinking coagents can be applied in combination in any way, as long as they
Contribute to cross-linking under irradiation.Additionally, the addition of described crosslinking coagent is generally dry glue in latex
0.1-10 weight % of weight, preferably 0.5-9 weight %, more preferably 0.7-7 weight %.
Additionally, the preparation method of the lubricant composition of present invention offer can also include additive and base
Plinth oil and nitrile rubber particle to be disperseed together mix and disperse.
The kind of described base oil and additive has been described above being described, and therefore not to repeat here.
The mode of described mixing and redispersion is not particularly limited by the present invention, as long as enabling to described
Nitrile rubber particle to be disperseed is effectively dispersed in base oil thus obtains using base oil as continuous phase also
And the lubricant composition with nitrile rubber particle as dispersion phase.One according to the present invention is the most real
Execute mode, described mixing scattered mode to include:
(1) described nitrile rubber particle to be disperseed added in described base oil and mixed by mechanical agitation
Close so that described in nitrile rubber particle disperse disperse or be suspended in described base oil, tentatively divided
The compositions dissipated；
(2) described preliminary scattered compositions is carried out redispersion, until the nitrile rubber grain after Fen San
The mean diameter of son reaches in the range of 20-2000nm, preferably reaches in the range of 50-1000nm, more
Preferably reach in the range of 70-500nm.Enabled to by this preferred mixing scattered mode
Nitrile rubber particle is dispersed in base oil with initial size, the viscosity temperature characteristic of the lubricant composition obtained
More preferably.
According to the another kind of preferred implementation of the present invention, the preparation method of described lubricant composition is also wrapped
Including step (3), product step (2) obtained is being not less than at a temperature of 80 DEG C, preferably the lowest
At a temperature of 100 DEG C, more preferably place at a temperature of 100-200 DEG C at least 1 hour, preferably put
Put at least 2 hours, more preferably place at least 4 hours, will obtain after most preferably placing 4-10 hour
Product carry out secondary redispersion, the nitrile rubber particle and the base oil that so enable to crosslinking fully soak
Profit is also the most swelling, and nitrile rubber particle with less particle size dispersion in base oil, thus obtain viscous temperature
The more preferable lubricant composition of performance.Additionally, in step (3), by the product of step (2) the lowest
At a temperature of 80 DEG C, place at least 1 hour period, can coordinate and accomplished continuously or intermittently stir, so that stirring
Material is heated evenly.
Mechanical agitation mixing described in step (1) can be entered in existing various mechanical mixing equipments
OK, for example, it is possible to carry out in the mechanical mixing equipment such as homogenizer, kneader.The present invention is to institute
The condition stating mechanical agitation mixing is also not particularly limited, as long as being prepared by cross-linking radiation method making
The nitrile rubber particle to be disperseed with cross-linked structure and before the performance of base oil do not has any change
Put, make the nitrile rubber particle to be disperseed with cross-linked structure prepared by cross-linking radiation method disperse
Or be suspended in base oil, these those skilled in the art all can be known, therefore not to repeat here.
According to the preparation method of the lubricant composition that the present invention provides, dividing again described in step (2)
Dissipate and the secondary redispersion described in step (3) can grind at homogenizer, bead independently of one another
Machine, three-roll grinder, single screw extrusion machine, multi-screw extruder, kneader, dissolvers and ultrasound wave
At least one mixing apparatus in disperser is carried out, preferably at homogenizer, three-roll grinder and ultrasound wave
Carrying out in disperser, the preferred mixing apparatus of these three has processing output height, good mixing effect, follow-up
Clean fairly simple advantage.Most preferably, the secondary in the redispersion of step (2) and step (3)
It is redispersed in homogenizer and carries out.In dispersive process, according to different dust dispersion quality requirements, need by
Cycles samples cools down, then iterates through mixing apparatus and repeatedly disperse, until being dispersed in base oil
In the range of the mean diameter of nitrile rubber particle reaches 20-2000nm, preferably reach 50-1000nm scope
In, in the range of more preferably up to 70-500nm.Additionally, described redispersion and secondary are divided by the present invention again
The condition dissipated is not particularly limited, as long as making base oil and nitrile rubber particle neutral in dispersive process
Can not destroy, and make the particle diameter of nitrile rubber particle reach 20-2000nm, preferably reach
These those skilled in the art all can be known by 50-1000nm, more preferably up to 70-500nm,
This does not repeats.
Additionally, the placement described in step (3) is preferably carried out in existing various airtight firing equipments,
Specifically can carry out in high temperature oven, vacuum high-temperature baking oven, heating kettle or similar airtight adding in heat container,
So can improve heat treatment efficiency, save the energy, base oil and nitrile rubber grain can also be reduced simultaneously
Son contacts with air (oxygen), reduces thermal oxide degree, makes properties of product keep stable.
Present invention also offers the lubricant composition prepared by said method.
Hereinafter will be described the present invention by embodiment.
(1) raw material used in embodiment and comparative example is as follows:
Mineral base oil, Sinopec produces, and the trade mark is Ib150, and viscosity when 40 DEG C is 32.6mm2/ s,
Viscosity index (VI) is 90.
Synthetic base oil, Sinopec produces, and the trade mark is PAO40, poly alpha olefin, viscosity when 40 DEG C
For 40.2mm2/ s, viscosity index (VI) is 120.
Nitrile rubber particle to be disperseed, Sinopec produces, and the trade mark is VP401, and mean diameter is
100nm, gel content is 90 weight %, examines under a microscope, in this nitrile rubber particle to be disperseed
Not finding layering, noted phase separation phenomena, it is used cobalt source to carry out cross-linking radiation method system by acrylonitrile-butadiene rubber latex
Standby and obtained by spray drying process.The infrared spectrogram of this nitrile rubber particle is shown in Fig. 1.From Fig. 1
It can be seen that 2240cm-1Place is the characteristic absorption peak of acrylonitrile unit unit；920cm-1、970cm-1
Etc. be the characteristic absorption peak of butadiene structural units；1450cm-1Place is the feature of styrol structural unit
Absworption peak.
Peroxide crosslinking nitrile rubber particle is according to method system disclosed in patent CN1840622A
Standby and use spray drying process to obtain, rubber latex be acrylonitrile-butadiene rubber latex (with prepare butyronitrile to be disperseed
The composition of the rubber latex that rubber particles VP401 is used is identical), the cross-linking agent of employing is peroxidating two
Isopropylbenzene (DCP), the mean diameter of the final peroxide crosslinking nitrile rubber particle obtained is
100nm, gel content is 90 weight %.
(2) following instrument and equipment and the assay method of the experimental data in embodiment and comparative example measures:
(1) dynamic viscosity: use NDJ-5S type numeral rotating cylinder viscometer to test 40 DEG C and 100 respectively
The dynamic viscosity of the lubricant composition at DEG C, wherein, uses the heating of oil bath temperature control.
(2) oil mass is divided: according to SH/T 0324-92 " grease Stencil oil-dividing algoscopy (static method) "
Standard method is tested, and specifically, is positioned over by sample on 100 mesh copper mesh, stands in 100 DEG C of baking ovens
Within 24 hours, further take out measurement point oil mass.
(3) coefficient of friction: the interface friction of measuring lubricating grease compositions on electronic tension tester
Can, load is 0.2kg, compares aluminum-steel (unlubricated) and the confficient of static friction μ of aluminum-steel (having lubrication)s
With coefficient of kinetic friction μk, wherein, uncoated any grease group in unlubricated expression aluminum-steel material surface
Compound, has lubrication to represent on aluminum-steel surface and has been coated with corresponding lubricant composition.
Embodiment 1
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion mineral base oil Ib150 and 10 weight portions nitrile rubber to be disperseed particle VP401
Mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, and during homogenizing, roller rotating speed is
280 revs/min, during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By said mixture
Material keeps 4 hours in 150 DEG C of high temperature ovens, again by three-roll grinder homogenizing circulation five times, all
During change, roller rotating speed is 280 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, obtains grease composition
Thing, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Comparative example 1
This comparative example is for lubricant composition that reference is described and preparation method thereof.
Lubricant composition is prepared according to the method for embodiment 1, except for the difference that, will nitrile rubber be disperseed
The particle VP401 peroxide crosslinking nitrile rubber particle of identical weight part substitutes, and obtains reference lubrication
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 2
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion mineral base oil Ib150 and 30 weight portions nitrile rubber to be disperseed particle VP401
Mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, and during homogenizing, roller rotating speed is
280 revs/min, during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By said mixture
Material keeps 4 hours in 150 DEG C of high temperature ovens, again by three-roll grinder homogenizing circulation five times, all
During change, roller rotating speed is 280 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, obtains grease composition
Thing, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Comparative example 2
This comparative example is for lubricant composition that reference is described and preparation method thereof.
Lubricant composition is prepared according to the method for embodiment 2, except for the difference that, will nitrile rubber be disperseed
The particle VP401 peroxide crosslinking nitrile rubber particle of identical weight part substitutes, and obtains reference lubrication
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 3
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion mineral base oil Ib150 and 50 weight portions nitrile rubber to be disperseed particle VP401
Mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, and during homogenizing, roller rotating speed is
100 revs/min, during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By said mixture
Material keeps 4 hours in 150 DEG C of high temperature ovens, again by three-roll grinder homogenizing circulation five times, all
During change, roller rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, obtains grease composition
Thing, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 4
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion mineral base oil Ib150 and 100 weight portions nitrile rubber to be disperseed particle
VP401 mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, roller during homogenizing
Rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By above-mentioned
Mixed material keeps 4 hours in 150 DEG C of high temperature ovens, circulates five again by three-roll grinder homogenizing
Secondary, during homogenizing, roller rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, is lubricated
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 5
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion synthetic base oil PAO40 and 10 weight portions nitrile rubber to be disperseed particle
VP401 mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, roller during homogenizing
Rotating speed is 280 revs/min, and during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By above-mentioned
Mixed material keeps 4 hours in 150 DEG C of high temperature ovens, circulates five again by three-roll grinder homogenizing
Secondary, during homogenizing, roller rotating speed is 280 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, is lubricated
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 6
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion synthetic base oil PAO40 and 50 weight portions nitrile rubber to be disperseed particle
VP401 mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, roller during homogenizing
Rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By above-mentioned
Mixed material keeps 4 hours in 150 DEG C of high temperature ovens, circulates five again by three-roll grinder homogenizing
Secondary, during homogenizing, roller rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, is lubricated
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
Embodiment 7
Lubricant composition that this embodiment provides for the present invention is described and preparation method thereof.
By 100 weight portion synthetic base oil PAO40 and 100 weight portions nitrile rubber to be disperseed particle
VP401 mixing mechanical agitation are uniform, and then in three-roll grinder, homogenizing circulates five times, roller during homogenizing
Rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 10 μm, obtains mixed material.By above-mentioned
Mixed material keeps 4 hours in 150 DEG C of high temperature ovens, circulates five again by three-roll grinder homogenizing
Secondary, during homogenizing, roller rotating speed is 100 revs/min, and during dispersion, clearance between roll is minimal to 5 μm, is lubricated
Oil/fat composition, its dynamic viscosity, point oil mass and greasy property are shown in Tables 1 and 2 respectively.
The dynamic viscosity of table 1 lubricant composition and point oil mass
The greasy property of table 2 lubricant composition
From the results shown in Table 1, with containing the nitrile rubber particle that obtained by peroxide crosslinking
Lubricant composition compare, containing the butyronitrile rubber with cross-linked structure that obtained by cross-linking radiation method
Lubricant composition (40 DEG C) viscosity when low temperature of micelle is lower, and when high temperature (100 DEG C)
Viscosity is higher, and therefore, the lubricant composition that the present invention provides has more preferable viscosity temperature characteristic, application temperature
Degree wide ranges.
Additionally, from the results shown in Table 2, the antiwear and antifriction of the lubricant composition that the present invention provides
Performance is the most excellent.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, can be to the technical side of the present invention
Case carries out multiple simple variant, and these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as its
Without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (16)
1. a lubricant composition, it is characterised in that described lubricant composition contain base oil and
The nitrile rubber with cross-linked structure prepared by cross-linking radiation method being dispersed in described base oil
Particle, described base oil is continuous phase, and described nitrile rubber particle is dispersion phase, and relative to 100 weights
The described base oil of amount part, the content of described nitrile rubber particle is 10-180 weight portion.
Lubricant composition the most according to claim 1, wherein, relative to 100 weight portions
Described base oil, the content of described nitrile rubber particle is 10-160 weight portion, preferably 10-120 weight
Amount part.
Lubricant composition the most according to claim 1 and 2, wherein, described nitrile rubber grain
The mean diameter of son is 20-2000nm, preferably 50-1000nm, more preferably 70-500nm.
Lubricant composition the most according to claim 1 and 2, wherein, described nitrile rubber grain
The gel content of son is more than 60 weight %, more than preferably 75 weight %, and more preferably 80 weight %
Above.
Lubricant composition the most according to claim 1 and 2, wherein, described nitrile rubber grain
Son has equal phase structure.
Lubricant composition the most according to claim 1 and 2, wherein, described base oil is ore deposit
Thing base oil and/or synthetic base oil；
Preferably, described mineral base oil is selected from the low-viscosity index mineral base of viscosity index (VI) VI≤40
Oil, the middle viscosity index (VI) mineral base oil of 40 ＜ viscosity index (VI) VI≤90,90 ＜ viscosity index (VI) VI≤120
High viscosity index (HVI) mineral base oil, the very high viscosity index (HVI) mineral base of 120 ＜ viscosity index (VI) VI≤140
Plinth oil, viscosity index (VI) VI ＞ 140 superhigh viscosity index mineral base oil at least one；
Preferably, described synthetic base oil is selected from synthesis hydrocarbon, alkylaromatic hydrocarbon, synthetic ester, polyethers, halo
Hydrocarbon, polysiloxanes and at least one contained in fluorocarbon oil；Preferably, described synthesis hydrocarbon selected from ethylene low polymer,
Propylene oligomer, polybutene, polyisobutylene, poly alpha olefin, poly internal olefins hydrocarbon and the halogen of above-mentioned synthesis hydrocarbon
For at least one in product；Preferably, described alkylaromatic hydrocarbon selected from alkylbenzene, alkylnaphthalene and contains
At least one in heteroatomic alkylaromatic hydrocarbon；Preferably, described synthetic ester is selected from monoesters, dibasic acid esters, many
Unit's alcohol ester, polymer esters, carbonic ester, phosphate ester, citrate, esters of silicon acis and olefin-acrylic
At least one in lipin polymer；Preferably, described polyethers is selected from aliphatic polyether, polyphenylene oxide, gathers
At least one in polythiaether and perfluoroalkyl polyethers；Preferably, described polysiloxanes is selected from dimerization silica
At least one in alkane, cyclotrisiloxane, four polysiloxanes, eight polysiloxanes and the poly-tetrasiloxane of ring.
7. a preparation method for lubricant composition, the method includes handing over by base oil with by irradiation
The nitrile rubber particle to be disperseed of cross-linked structure that prepared by linked method have mixes and disperses, and relatively
In the described base oil of 100 weight portions, described in the consumption of nitrile rubber particle to be disperseed be 10-180 weight
Amount part.
Method the most according to claim 7, wherein, described mixing scattered mode include:
(1) described nitrile rubber particle to be disperseed added in described base oil and mixed by mechanical agitation
Close so that described in nitrile rubber particle disperse disperse or be suspended in described base oil, tentatively divided
The compositions dissipated；
(2) described preliminary scattered compositions is carried out redispersion, until the nitrile rubber grain after Fen San
The mean diameter of son reaches in the range of 20-2000nm, preferably reaches in the range of 50-1000nm, more
Preferably reach in the range of 70-500nm.
Method the most according to claim 8, wherein, the method also includes step (3), will step
Suddenly the product that (2) obtain is being not less than at a temperature of 80 DEG C, is preferably being not less than at a temperature of 100 DEG C
Place at least 1 hour, preferably place at least 2 hours, more preferably place at least 4 hours, incite somebody to action afterwards
To product carry out secondary redispersion.
Method the most according to claim 9, wherein, the redispersion described in step (2) and
Secondary redispersion described in step (3) grinds at homogenizer, bead mill, three rollers independently of one another
In grinding machine, single screw extrusion machine, multi-screw extruder, kneader, dissolvers and ultrasonic disperser
At least one mixing apparatus is carried out, preferably in homogenizer, three-roll grinder and ultrasonic disperser
At least one mixing apparatus is carried out, more preferably carries out in homogenizer；Preferably, in step (3)
Described being placed in airtight firing equipment is carried out.
11. methods according to claim 7, wherein, relative to the described basis of 100 weight portions
Oil, described in the consumption of nitrile rubber particle to be disperseed be 10-160 weight portion, preferably 10-120 weight
Part.
12. according to the method described in any one in claim 7-11, wherein, described in fourth to be disperseed
Nitrile rubber particle is for being 20-2000nm by mean diameter, being preferably 50-1000nm, more preferably
The nitrile rubber particle aggregation of 70-500nm and the nitrile rubber particle cluster that formed.
13. according to the method described in any one in claim 7-11, wherein, described in fourth to be disperseed
The gel content of nitrile rubber particle is more than 60 weight %, more than preferably 75 weight %, more preferably
More than 80 weight %.
14. according to the method described in any one in claim 7-11, wherein, described in fourth to be disperseed
Nitrile rubber particle is equal phase structure.
15. according to the method described in any one in claim 7-11, and wherein, described base oil is
Mineral base oil and/or synthetic base oil；
Preferably, described mineral base oil is selected from the low-viscosity index mineral base of viscosity index (VI) VI≤40
Oil, the middle viscosity index (VI) mineral base oil of 40 ＜ viscosity index (VI) VI≤90,90 ＜ viscosity index (VI) VI≤120
High viscosity index (HVI) mineral base oil, the very high viscosity index (HVI) mineral base of 120 ＜ viscosity index (VI) VI≤140
Plinth oil, viscosity index (VI) VI ＞ 140 superhigh viscosity index mineral base oil at least one；
Preferably, described synthetic base oil is selected from synthesis hydrocarbon, alkylaromatic hydrocarbon, synthetic ester, polyethers, halo
Hydrocarbon, polysiloxanes and at least one contained in fluorocarbon oil；Preferably, described synthesis hydrocarbon selected from ethylene low polymer,
Propylene oligomer, polybutene, polyisobutylene, poly alpha olefin, poly internal olefins hydrocarbon and the halogen of above synthesis hydrocarbon
For at least one in product；Preferably, described alkylaromatic hydrocarbon selected from alkylbenzene, alkylnaphthalene and contains
At least one in heteroatomic alkylaromatic hydrocarbon；Preferably, described synthetic ester is selected from monoesters, dibasic acid esters, many
Unit's alcohol ester, polymer esters, carbonic ester, phosphate ester, citrate, esters of silicon acis and olefin-acrylic
At least one in lipin polymer；Preferably, described polyethers is selected from aliphatic polyether, polyphenylene oxide, gathers
At least one in polythiaether and perfluoroalkyl polyethers；Preferably, described polysiloxanes is selected from dimerization silica
At least one in alkane, cyclotrisiloxane, four polysiloxanes, eight polysiloxanes and the poly-tetrasiloxane of ring.
16. lubricant compositions prepared by the method described in any one in claim 7-15.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054955A (en) * | 2018-09-25 | 2018-12-21 | 中国石油化工股份有限公司 | A kind of composition and its application method improving compatibility between silicone oil and rubber |
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