CN110105696A - A kind of preparation method of water lubriucated bearing composite rubber material - Google Patents
A kind of preparation method of water lubriucated bearing composite rubber material Download PDFInfo
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- CN110105696A CN110105696A CN201910361115.6A CN201910361115A CN110105696A CN 110105696 A CN110105696 A CN 110105696A CN 201910361115 A CN201910361115 A CN 201910361115A CN 110105696 A CN110105696 A CN 110105696A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K3/00—Use of inorganic substances as compounding ingredients
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Abstract
The present invention relates to a kind of preparation methods of water lubriucated bearing composite rubber material, belong to technical field of bearings.The present invention is using acrylic rubber as basis material, it is kneaded with nitrile rubber, prepare a kind of water lubriucated bearing composite rubber material, acrylic rubber is by esters of acrylic acid main monomer, elastomer made of cure site monomer and function monomer copolymerization, with preferable mechanical property, wearability, tear resistance is strong, the chemical property of acrylic rubber is stablized, rubber has preferable cold resistance, simultaneously, the gas permeability of acrylic rubber is low, olefin(e) acid ester rubber has good oil resistance, nitrile rubber chemical-resistant stability is good, processing performance is good, curingprocess rate is accelerated, tensile strength improves, therefore, acrylic rubber and nitrile rubber mixing are prepared into water lubriucated bearing composite rubber material, it can effectively improve the mechanical property of compounded rubber, heat-resisting quantity and oil resistance.
Description
Technical field
The present invention relates to a kind of preparation methods of water lubriucated bearing composite rubber material, belong to technical field of bearings.
Background technique
Bearing is widely used support accessory in machine, and what application range was most wide within the bearing is exactly miscellaneous cunning
Dynamic bearing.According to relevant statistics, there are about 1/3 energy consumptions in various forms of frictions in the world at present, wherein sliding
The consumption of bearing accounts for about 1/10.Therefore modern rotating requires bearing to have good bearing capacity, high reliability and longevity
Life.For using water or seawater etc low-viscosity (mobile) liquid lubrication also to require have very high bearing capacity and wearability.Solve this
There are two types of approach for problem: one is to provide extraneous high pressure liquid source, that is, uses hydrostatic bearing；Second is that utilizing hydrodynamic
Bearing.Using the friction pair of hydrldynamic pressure lubrication, the overwhelming majority is the convergence wedge using high viscosity liquid.Engineering practice is compeled to be essential
The high load capacity bearing using low-viscosity (mobile) liquid as lubricating fluid is developed, such as more severe in operating conditions such as metallurgy, mine, waterpower
The mechanical equipment applied in industry generally requires to be lubricated with conveying liquid (the especially low-viscosity (mobile) liquids such as water, seawater).
This is than using oil lubrication to have unique superiority.It does not need the different bearing chambers such as the lubrication feedway under special part, and
The sealing device for preventing conveying liquid from mixing with oil, in this embodiment it is not even necessary in forced feed lubrication item, therefore enormously simplify lubricating system
Structure.
From 1886 Britain hydraulician Reynolds (Reynolds) derive famous hydrodynamic lubrication equation (i.e. Reynolds
Equation), propose hydrodynamic lubrication theory so far, people become increasingly abundant to friction, abrasion and the research and development of lubrication, lubricate
Theory is also gradually improved, but research and application of the people to water lubriucated bearing especially rubber shaft bearing, is with Muijderman
Low viscosity fluid hydrodynamic bearing it is theoretical based on grow up.Since the latter stage forties, the Soviet Union is made to using water always
In-depth study is carried out for the hydrostatic bearing of lubricating fluid and the characteristic of hydrodynamic bearing and material.Britain, Germany and day
A large amount of work has been done in terms of the 50, the sixties also research in water lubriucated bearing by this and other many countries.The sea of Britain
Ward-Tyler Corporations in glandless pump structure use water-lubricated slide bearing, shaft material be martensitic stain less steel or
Carbon steel chrome-faced.And bush material is that asbestos fill phenol acid anhydride resin, using effect is preferable.The Vickers (Vickers) of Germany
Water lubricated rubber bearing is then used in deep well pump and in immersible pump with John Cameron Mitchell (Michell) company, i.e., is made with rubber material
Bearing shell.Canadian Thomson-Ge Erdeng Co., Ltd uses water lubrication system in the bearing of marine rear shaft, stainless
Steel shaft holds compound strata condensation material and makees bearing shell.Japan is widely used water lubrication shaft in centrifugal pump and marine centrifugal pump
It holds；In large combustion engines oil tanker in auxiliary boiler feed pump, using self contained water lubriucated bearing, bush material is carburizing conjunction
Gold.Toshiba also develops pump water lubriucated bearing etc. on steam turbine generator and hydrogenerator.
Since using water lubriucated bearing the mid-50 in marine centrifugal pump and axial-flow pump, the initial stage sixties is opened for China
Beginning carries out theory study and the Test And Research Work of this respect.Such as the core of two the first designing institutees, machine portion design pumps water lubrication shaft
It holds；The phenol acid anhydride plastics water lubriucated bearing used on three station large-sized vertical-type axial-flow pump of Jiangdu；The water lubrication modeling used on submersible pump
Expect thrust bearing etc..70,80, the report of this respect nineties it is less, especially using rubber as the water lubrication shaft of bush material
It holds.Currently, the water lubriucated bearing of domestic application is relatively still less.Such as the water lubricated rubber bearing applied on pump be mostly from
Germany introduces technology, and by model test, comparison and evaluation test etc. sum up empirical parameter and fabricate.Domestic production
Producer is also seldom, and wherein sliding bearing research institute in Shenyang combines with composed by Xi'an Communications University's lubrication theory and bearing research
Body did some beneficial explorations in this respect.
In terms of bearing antifriction material, the present common bearing lining material of people is mainly include the following types: 1) bidery metal
(also known as babbit): including tinbase and Dandelion metal etc..2) acid bronze alloy: including cupro lead, Allen's metal, tin bronze,
Phosphor bronze, aluminium bronze etc..3) acieral: including mock silver, alusil alloy etc..4) zinc-containing alloy: including cadmium base alloy, casting
Iron, silver etc..5) rubber, graphite, timber, jewel, ceramics etc..6) engineering plastics: nylon, phenol acid anhydride resin, epoxy resin and poly- four
Fluorine dilute (PTFE) and their mixture etc..7) powder sintered bearing material: copper-based, ferrous alloy etc..8) thin foil etc..By
It is a kind of low-viscosity (mobile) liquid in water, at 50 DEG C, the absolute viscosity of water is about the 1/65 of turbine oil viscosity.And lubricating liquid film is held
Loading capability is directly proportional to viscosity, with square being inversely proportional for film thickness；Therefore equal to obtain in all identical situation of other conditions
Bearing capacity, then the thickness of moisture film is only the 1/8 of oil film thickness.This shows that water lubriucated bearing bearing capacity is relatively low, and
It probably works under non-fluid friction operating condition, is easy to produce contacting with each other for bearing shell and axle journal adapted storeroom；Therefore, water
The performance of lubricating bearing material is to determine a principal element of its working performance and service life.
In the above eight class bearings lining material, the country was once used to or was still used at present production water lubriucated bearing
Material have lignumvitae, fabroil, rubber, plastics, ceramics, graphite product, metal, alloy and metallo-plastic etc. several.
But the thermal expansion of plastic bearing and water imbibition lead to the variation of bearing clearance, ceramic high brittleness and low shock resistance,
And they in water solid particle it is highly sensitive, limit their application.And rubber shaft bearing then overcome it is above main
Disadvantage, it is insensitive to silt, buffer vibration suppression the advantages that make operating condition it is more severe place can more show water lubrication rubber
The superiority of glue bearing.Therefore water lubricated rubber bearing especially marine pump, slush pump, sewage pump etc. in the industry of part at home
It has broad application prospects in industry.
It oneself is moved since metal shaft does not allow for solids to follow, but inclusiveness ground roll pushes away them, therefore it wears
Less.Axle journal has very smooth surface simultaneously, this facilitates the abrasion for reducing rubber shaft bearing.Due to the elasticity of rubber, in this way
Bearing to the deflection of axis and vibrate insensitive, can work in dirty water, but do not allow to work in the case where cutting off the water supply, water profit
Sliding rubber shaft bearing has the advantage that 1) coefficient of friction is small.Data shows that rubber shaft bearing has very little under conditions of water lubrication
Coefficient of friction, the coefficient of friction of good metal bearing in the oil is close (about 0.005~0.01) with processing.
2) wear-resisting, it is durable.Excellent fit due to material is to making friction power loss very little, thus journal surface wears very little.It is special
The rubber topping material softness of system and high resilience, have good inclusiveness, make to be embedded in impurity and are imported by the revolution of axle journal
It is washed away in water flowing groove by lubrication water.Therefore it ensure that rubber shaft bearing mantle friction very little, so that bearing lasts a long time.
3) buffering, vibration suppression, low noise.This is the incomparable advantage of other water lubriucated bearings.Rubber material elasticity compared with
Good, interior damping is larger, can be effectively prevented or slowing down vibration, noise and impact.In addition, the deformation of rubber may also function as mitigation
The effect of the stress of axis, and have the ability of automatic positoning.
4) insensitive to installing and impacting, it is at low cost, it is light-weight, it can be machined；Running expense is low, can simplify
The structure etc. of machine.
The disadvantage is that poor thermal conductivity, oil resistant, starting torque be not big.But all in all, water lubricated rubber bearing be still it is underwater most
One of suitable bearing, it not only saves valuable non-ferrous metal and lubriation material, and eliminates complicated lubricant supply
System simplifies machine construction, improves maintainability.Thus have broad application prospects.
It can be said that each step of water lubricated rubber bearing development process, is all that the development with water lubriucated bearing is inseparable.
I.e. the latter stage forties occurs, 50, the sixties done more work, 70,80, the research nineties it is less.Although domestic certain joints
Body has the experience of some maturations in terms of water lubricated rubber bearing, has developed some new products and achieves certain achievement.
But compared with foreign countries, gap is also larger, however it remains many problems to be solved:
Although 1) experience of the water lubricated rubber bearing in terms of manufacturing production is more, present country's water lubricated rubber bearing
Design and manufacture be also merely resting on the experience stage, and many empirical datas still continue to use the data of foreign countries 50, the sixties, very much
Domestic current water lubricated rubber bearing material has not been suitable for it and using status.
2) the theoretically domestic system report for occurring water lubricated rubber bearing not yet, obtains also very not in foreign study
Deeply, especially to the lubrication mechanism of water lubricated rubber bearing, hydrodynamic lubrication can be formed, if can be formed, is formed
Bearing, speed and load-up condition of hydrodynamic lubrication etc. are not studied explicitly.
Summary of the invention
The technical problems to be solved by the invention: thermal expansion and water imbibition for plastic bearing lead to the change of bearing clearance
Change, ceramic high brittleness and low shock resistance and they in water solid particle it is highly sensitive, limit theirs
Using rubber shaft bearing is the disadvantage is that poor thermal conductivity, and the big problem of oil resistant, starting torque, it is multiple not provide a kind of water lubriucated bearing use
Close the preparation method of rubber material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) by acrylic rubber, nitrile rubber, modified carbon black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010
It is placed in blender, 30 ~ 40min is stirred with 200 ~ 240r/min revolving speed under room temperature, obtains mixture；
(2) mixture is placed in two-roll mill, 15 ~ 20min of mill under conditions of 100 ~ 120 DEG C obtains mill rubber；
(3) mill rubber is placed in vulcanizing press, sulphur is added, vulcanize 20 ~ 40min, room temperature cooling obtains water lubriucated bearing
Use composite rubber material.
The acrylic rubber, nitrile rubber, modified carbon black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant
1010, the parts by weight of sulphur are 40 ~ 60 parts of acrylic rubber, 20 ~ 30 parts of nitrile rubbers, 12 ~ 18 parts of modified carbon blacks, 8 ~ 12 parts
Carbon fiber, 6 ~ 9 parts of copper powders, 4 ~ 6 parts of glycerine, 2 ~ 3 parts of stearic acid, 0.4 ~ 0.6 part of antioxidant 1010,2 ~ 3 parts of sulphur.
Conditions of vulcanization described in step (3) is 160 ~ 200 DEG C, 16 ~ 18MPa.
The specific preparation step of modified carbon black described in step (1) are as follows:
(1) carbon black is added in nitric acid, 40 ~ 60min is stirred with 400 ~ 500r/min revolving speed under room temperature, obtains mixed liquor；
(2) mixed liquor is placed in ultrasonic oscillator, 1 ~ 2h of ultrasonic disperse obtains dispersion liquid；
(3) dispersion liquid is placed in centrifugal separator, 10 ~ 15min is centrifugated with 4000 ~ 4500r/min revolving speed under room temperature, is gone
Lower layer's solid is washed with deionized 3 ~ 5 times, is placed in 40 ~ 50 DEG C of baking ovens dry 40 ~ 60min, obtains modified carbon black.
The parts by weight of the carbon black, nitric acid are the nitric acid of 30 ~ 40 parts of carbon blacks, 120 ~ 160 parts of mass concentrations 10%.
The power of ultrasonic disperse described in step (2) is 400 ~ 500W.
The specific preparation step of acrylic rubber described in step (1) are as follows:
(1) butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate are added in deionized water,
10 ~ 12min is stirred with 200 ~ 250r/min revolving speed under 50 ~ 60 DEG C of water bath condition, keeps the temperature, obtains crylic acid ester mixture liquid；
(2) sodium dithionite, ammonium persulfate are added in crylic acid ester mixture liquid, nitrogen protection are passed through, in 50 ~ 60 DEG C of water
1 ~ 2h is stirred to react with 240 ~ 280r/min revolving speed under the conditions of bath, obtains reaction lotion；
(3) by dehydrated alcohol be added reaction lotion in, under room temperature with 180 ~ 200r/min revolving speed stir 8 ~ 10min, stand 30 ~
40min, filtering, takes solid, obtains reaction polymer；
(4) reaction polymer is washed 2 ~ 4 times with dehydrated alcohol, then be washed with deionized 1 ~ 3 time, be placed in 60 ~ 70 DEG C of baking
Dry 40 ~ 60min, room temperature cooling obtain acrylic rubber in case.
The butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate, hydrosulfurous acid
Sodium, ammonium persulfate, dehydrated alcohol, deionized water parts by weight be 20 ~ 40 parts of butyl acrylates, 20 ~ 40 parts of ethyl acrylates, 20
~ 40 parts of methyl methacrylates, 0.6 ~ 1.2 part of lauryl sodium sulfate, 0.1 ~ 0.2 part of sodium dithionite, 0.1 ~ 0.2 part of mistake
Ammonium sulfate, 10 ~ 20 parts of dehydrated alcohols, 40 ~ 80 parts of deionized waters.
The rate that is passed through of nitrogen described in step (2) is 30 ~ 40mL/min.
The present invention is compared with other methods, and advantageous effects are:
(1) it is kneaded with nitrile rubber using acrylic rubber as basis material, prepares a kind of water lubriucated bearing use by the present invention
Composite rubber material, acrylic rubber are as made of the copolymerization of esters of acrylic acid main monomer, cure site monomer and function monomer
Elastomer has excellent high temperature resistant oil resistance, and acrylic rubber resilience is high, hardness is moderate, and compression set
It is small, there is preferable mechanical property, wearability, tear resistance is strong, and the chemical property of acrylic rubber is stablized, and adapts to work and is situated between
Mass-energy power is strong, it is not easy to generate swelling, decompose, hardening, have certain weatherability, the main chain of acrylic rubber is saturated carbon
Chain, side group are polar ester groups, since atomic number of alkyl carbon purpose increases, enhance the polarity of ester group, generate biggish shielding effect
It answers, therefore the water resistance of acrylic rubber is improved, simultaneously because polar screen effect, makes the effect between rubber molecule
Power is reduced, and increases internal plasticity, therefore the brittleness temperature of rubber reduces, rubber has preferable cold resistance, due to its master
Chain does not have unsaturated bond, therefore acrylic rubber also has the characteristics that good resistance to ozone, UV radiation and weatherability,
Meanwhile the gas permeability of acrylic rubber is low, due to the presence of its side ester group, acrylic rubber has stronger pole
Property, the solubility parameters of acrylic rubber differ larger with general nonpolar mineral oil, and acrylic rubber is with good resistance to
Oiliness energy, nitrile rubber are a kind of excellent combination properties, and the special synthetic rubber claimed especially with oil resistivity, nitrile rubber is fourth two
The copolymer of alkene and acrylonitrile due to containing itrile group polar group in nitrile rubber molecular structure, thus has excellent oil resistant
Property, nitrile rubber chemical-resistant stability is good, and the content for improving acrylonitrile in its structure can be such that relative density increases, and processing performance is good
Good, curingprocess rate is accelerated, and tensile strength improves, and therefore, acrylic rubber and nitrile rubber mixing is prepared water lubriucated bearing
With composite rubber material, the mechanical property, heat-resisting quantity and oil resistance of compounded rubber can effectively improve；
(2) present invention prepares a kind of water lubriucated bearing composite rubber material by addition modified carbon black, carbon fiber and copper powder,
Carbon black is a kind of amorphous carbon, light, pine and superfine black powder, surface area are very big, be carbonaceous material in lack of air
Under the conditions of through imperfect combustion or product obtained by being thermally decomposed, the structural of carbon black is to be polymerized to chain or Portugal between carbon black particle
The degree of grape shape indicates, the condensate group that is made of the number of particles in the size of condensate, form and each condensate
At carbon black be known as super-normal structure black, the structural height of carbon black, spatial network channel easy to form, and survivable, Gao Jie
Structure carbon black pellet is thin, and netted chain accumulation is close, and large specific surface area, unit mass particle is more, is conducive to form chain type in rubber
Conductive structure improves the wear-resisting property of material to play good reinforcing effect to rubber material, and carbon fiber is by organic fibre
Dimension is piled up along fiber axial direction, through microcrystalline graphite material obtained from carbonization and graphitization processing.Carbon fiber light weight,
Intensity is high, and carbon fiber, which is added, can effectively reduce the staring torque of material, and copper metal has good thermal conductivity and stability, adds
Entering copper powder can effectively improve the heating conduction of compounded rubber.
Specific embodiment
Based in parts by weight, 20 ~ 40 parts of butyl acrylates, 20 ~ 40 parts of ethyl acrylates, 20 ~ 40 parts of first are weighed respectively
Base methyl acrylate, 0.6 ~ 1.2 part of lauryl sodium sulfate, 0.1 ~ 0.2 part of sodium dithionite, 0.1 ~ 0.2 part of ammonium persulfate,
10 ~ 20 parts of dehydrated alcohols, 40 ~ 80 parts of deionized waters, by butyl acrylate, ethyl acrylate, methyl methacrylate, dodecane
Base sodium sulphate is added in deionized water, 10 are stirred under 50 ~ 60 DEG C of water bath condition with 200 ~ 250r/min revolving speed ~
12min, heat preservation, obtains crylic acid ester mixture liquid, and sodium dithionite, ammonium persulfate are added in crylic acid ester mixture liquid, with 30 ~
The airflow rate of 40mL/min is passed through nitrogen protection, anti-with the stirring of 240 ~ 280r/min revolving speed under 50 ~ 60 DEG C of water bath condition
Answer 1 ~ 2h, obtain reaction lotion, by dehydrated alcohol be added reaction lotion in, under room temperature with 180 ~ 200r/min revolving speed stirring 8 ~
10min stands 30 ~ 40min, and filtering takes solid, obtains reaction polymer, reaction polymer is washed 2 ~ 4 times with dehydrated alcohol,
It is washed with deionized again 1 ~ 3 time, is placed in 60 ~ 70 DEG C of baking oven dry 40 ~ 60min, room temperature cooling obtains acrylate rubber
Glue；Again according to parts by weight, the nitric acid for weighing 30 ~ 40 parts of carbon blacks, 120 ~ 160 parts of mass concentrations 10% respectively, is added nitre for carbon black
In acid, 40 ~ 60min is stirred with 400 ~ 500r/min revolving speed under room temperature, mixed liquor is obtained, mixed liquor is placed in ultrasonic oscillator
In, 1 ~ 2h of ultrasonic disperse, obtains dispersion liquid under conditions of 400 ~ 500W, dispersion liquid is placed in centrifugal separator, under room temperature with
4000 ~ 4500r/min revolving speed is centrifugated 10 ~ 15min, and sub-cloud solid is washed with deionized 3 ~ 5 times, is placed in 40 ~ 50 DEG C
Dry 40 ~ 60min, obtains modified carbon black in baking oven；Again according to parts by weight, respectively weigh 40 ~ 60 parts of acrylic rubber, 20 ~
30 parts of nitrile rubbers, 12 ~ 18 parts of modified carbon blacks, 8 ~ 12 parts of carbon fibers, 6 ~ 9 parts of copper powders, 4 ~ 6 parts of glycerine, 2 ~ 3 parts of stearic acid,
0.4 ~ 0.6 part of antioxidant 1010,2 ~ 3 parts of sulphur, by acrylic rubber, nitrile rubber, modified carbon black, carbon fiber, copper powder, third
Triol, stearic acid, antioxidant 1010 are placed in blender, are stirred 30 ~ 40min under room temperature with 200 ~ 240r/min revolving speed,
Mixture is obtained, mixture is placed in two-roll mill, 15 ~ 20min of mill under conditions of 100 ~ 120 DEG C obtains mill rubber,
Mill rubber is placed in vulcanizing press, sulphur is added, vulcanizes 20 ~ 40min under conditions of 160 ~ 200 DEG C, 16 ~ 18MPa,
Room temperature cooling obtains water lubriucated bearing composite rubber material.
Based in parts by weight, 40 parts of butyl acrylates, 40 parts of ethyl acrylates, 40 parts of methyl methacrylates are weighed respectively
Ester, 1.2 parts of lauryl sodium sulfate, 0.2 part of sodium dithionite, 0.2 part of ammonium persulfate, 20 parts of dehydrated alcohols, 80 parts go from
Sub- water butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate is added in deionized water, 60
DEG C water bath condition under 12min is stirred with 250r/min revolving speed, keep the temperature, crylic acid ester mixture liquid obtained, by hydrosulfurous acid
Sodium, ammonium persulfate are added in crylic acid ester mixture liquid, nitrogen protection are passed through with the airflow rate of 40mL/min, in 60 DEG C of water-bath
Under the conditions of 1h is stirred to react with 240 ~ 280r/min revolving speed, obtain reaction lotion, dehydrated alcohol be added in reaction lotion, under room temperature
8min is stirred with 180r/min revolving speed, stands 30min, filtering takes solid, obtains reaction polymer, by reaction polymer with anhydrous
Ethanol washing 2 times, then be washed with deionized 1 time, dry 40min is placed in 60 DEG C of baking oven, and room temperature cooling obtains acrylate
Rubber；Again according to parts by weight, carbon black is added in nitric acid the nitric acid for weighing 30 parts of carbon blacks, 120 parts of mass concentrations 10% respectively,
40min is stirred with 400r/min revolving speed under room temperature, mixed liquor is obtained, mixed liquor is placed in ultrasonic oscillator, in the item of 400W
Ultrasonic disperse 1h under part, obtains dispersion liquid, and dispersion liquid is placed in centrifugal separator, with the centrifugation point of 4000r/min revolving speed under room temperature
From 10min, sub-cloud solid is washed with deionized 3 times, is placed in 40 DEG C of baking ovens dry 400min, is obtained modified carbon black；It presses again
Parts by weight meter weighs 40 parts of acrylic rubber, 20 parts of nitrile rubbers, 12 parts of modified carbon blacks, 8 parts of carbon fibers, 6 parts of copper respectively
Powder, 4 parts of glycerine, 2 parts of stearic acid, 0.4 part of antioxidant 1010,2 parts of sulphur, by acrylic rubber, nitrile rubber, Modified Activated Carbon
Black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010 are placed in blender, with the stirring of 200r/min revolving speed under room temperature
30min is mixed, mixture is obtained, mixture is placed in two-roll mill, mill 15min under conditions of 100 DEG C obtains mill rubber
Mill rubber is placed in vulcanizing press by glue, and sulphur is added, and vulcanizes 20 ~ 40min, room temperature under conditions of 160 DEG C, 16MPa
It is cooling, obtain water lubriucated bearing composite rubber material.
Based in parts by weight, 30 parts of butyl acrylates, 30 parts of ethyl acrylates, 30 parts of methyl methacrylates are weighed respectively
Ester, 0.9 part of lauryl sodium sulfate, 0.15 part of sodium dithionite, 0.15 part of ammonium persulfate, 15 parts of dehydrated alcohols, 60 parts go
Butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate are added in deionized water ionized water,
11min is stirred with 225r/min revolving speed under 55 DEG C of water bath condition, keeps the temperature, obtains crylic acid ester mixture liquid, by even two sulfurous
Sour sodium, ammonium persulfate are added in crylic acid ester mixture liquid, nitrogen protection are passed through with the airflow rate of 35mL/min, in 55 DEG C of water
1.5h is stirred to react with 260r/min revolving speed under the conditions of bath, obtains reaction lotion, dehydrated alcohol is added in reaction lotion, under room temperature
9min is stirred with 190r/min revolving speed, stands 35min, filtering takes solid, obtains reaction polymer, by reaction polymer with anhydrous
Ethanol washing 3 times, then be washed with deionized 2 times, dry 50min is placed in 65 DEG C of baking oven, and room temperature cooling obtains acrylate
Rubber；Again according to parts by weight, carbon black is added in nitric acid the nitric acid for weighing 35 parts of carbon blacks, 140 parts of mass concentrations 10% respectively,
50min is stirred with 450r/min revolving speed under room temperature, mixed liquor is obtained, mixed liquor is placed in ultrasonic oscillator, in the item of 450W
Ultrasonic disperse 1.5h under part, obtains dispersion liquid, and dispersion liquid is placed in centrifugal separator, with the centrifugation of 4250r/min revolving speed under room temperature
13min is separated, and sub-cloud solid is washed with deionized 4 times, and dry 50min is placed in 45 DEG C of baking ovens, modified carbon black is obtained；Again
According to parts by weight, 50 parts of acrylic rubber, 25 parts of nitrile rubbers, 15 parts of modified carbon blacks, 10 parts of carbon fibers, 8 are weighed respectively
Part copper powder, 5 parts of glycerine, 2.5 parts of stearic acid, 0.5 part of antioxidant 1010,2.5 parts of sulphur, by acrylic rubber, butyronitrile rubber
Glue, modified carbon black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010 are placed in blender, with 220r/min under room temperature
Revolving speed is stirred 35min, obtains mixture, and mixture is placed in two-roll mill, mill 17min under conditions of 110 DEG C,
Mill rubber is obtained, mill rubber is placed in vulcanizing press, sulphur is added, vulcanizes under conditions of 180 DEG C, 17MPa
30min, room temperature cooling obtain water lubriucated bearing composite rubber material.
Based in parts by weight, 40 parts of butyl acrylates, 40 parts of ethyl acrylates, 40 parts of methyl methacrylates are weighed respectively
Ester, 1.2 parts of lauryl sodium sulfate, 0.2 part of sodium dithionite, 0.2 part of ammonium persulfate, 20 parts of dehydrated alcohols, 80 parts go from
Sub- water butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate is added in deionized water, 60
DEG C water bath condition under 12min is stirred with 250r/min revolving speed, keep the temperature, crylic acid ester mixture liquid obtained, by hydrosulfurous acid
Sodium, ammonium persulfate are added in crylic acid ester mixture liquid, nitrogen protection are passed through with the airflow rate of 40mL/min, in 60 DEG C of water-bath
Under the conditions of 2h is stirred to react with 280r/min revolving speed, obtain reaction lotion, dehydrated alcohol be added in reaction lotion, under room temperature with
200r/min revolving speed stirs 10min, stands 40min, and filtering takes solid, obtains reaction polymer, by the anhydrous second of reaction polymer
Alcohol washs 4 times, then is washed with deionized 3 times, is placed in 70 DEG C of baking oven dry 60min, and room temperature cooling obtains acrylate rubber
Glue；Again according to parts by weight, the nitric acid for weighing 40 parts of carbon blacks, 160 parts of mass concentrations 10% respectively carbon black is added in nitric acid, often
60min is stirred with 500r/min revolving speed under temperature, mixed liquor is obtained, mixed liquor is placed in ultrasonic oscillator, in the condition of 500W
Lower ultrasonic disperse 2h, obtains dispersion liquid, dispersion liquid is placed in centrifugal separator, with the centrifuge separation of 4500r/min revolving speed under room temperature
15min, sub-cloud solid are washed with deionized 5 times, are placed in 50 DEG C of baking ovens dry 60min, obtain modified carbon black；Again by weight
Number meter is measured, weighs 60 parts of acrylic rubber, 30 parts of nitrile rubbers, 18 parts of modified carbon blacks, 12 parts of carbon fibers, 9 parts of copper respectively
Powder, 6 parts of glycerine, 3 parts of stearic acid, 0.6 part of antioxidant 1010,3 parts of sulphur, by acrylic rubber, nitrile rubber, Modified Activated Carbon
Black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010 are placed in blender, with the stirring of 240r/min revolving speed under room temperature
40min is mixed, mixture is obtained, mixture is placed in two-roll mill, mill 20min under conditions of 120 DEG C obtains mill rubber
Mill rubber is placed in vulcanizing press by glue, and sulphur is added, vulcanizes 40min under conditions of 200 DEG C, 18MPa, room temperature is cold
But, water lubriucated bearing composite rubber material is obtained.
Water lubriucated bearing prepared by the present invention composite rubber material and city's bearing are detected with rubber material, specifically
Testing result is as follows:
Performance test:
The frictional behaviour for the control sample that water lubriucated bearing rubber composite material and comparative example 1 to Examples 1 to 3 obtain
It is detected.Detection device: MRH-3A type high-speed loop block frictional testing machine.Test condition: load: 66N, revolving speed: 1100rpm,
Time: 96h, lubricant medium: water, temperature: 90 ± 2 DEG C, using the weight difference for the front and back that rubs as abrasion loss.
Table 1 water lubriucated bearing composite rubber material performance characterization
Water lubriucated bearing composite rubber material prepared by the present invention as shown in Table 1, water lubrication coefficient of friction is low, wear-resisting property
Good, abrasion loss is small, excellent combination property.
Claims (9)
1. a kind of preparation method of water lubriucated bearing composite rubber material, which is characterized in that specific preparation step are as follows:
(1) by acrylic rubber, nitrile rubber, modified carbon black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010
It is placed in blender, 30 ~ 40min is stirred with 200 ~ 240r/min revolving speed under room temperature, obtains mixture；
(2) mixture is placed in two-roll mill, 15 ~ 20min of mill under conditions of 100 ~ 120 DEG C obtains mill rubber；
(3) mill rubber is placed in vulcanizing press, sulphur is added, vulcanize 20 ~ 40min, room temperature cooling obtains water lubriucated bearing
Use composite rubber material.
2. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 1, which is characterized in that institute
The acrylic rubber stated, nitrile rubber, modified carbon black, carbon fiber, copper powder, glycerine, stearic acid, antioxidant 1010, sulphur
Parts by weight be 40 ~ 60 parts of acrylic rubber, 20 ~ 30 parts of nitrile rubbers, 12 ~ 18 parts of modified carbon blacks, 8 ~ 12 parts of carbon fibers, 6 ~
9 parts of copper powders, 4 ~ 6 parts of glycerine, 2 ~ 3 parts of stearic acid, 0.4 ~ 0.6 part of antioxidant 1010,2 ~ 3 parts of sulphur.
3. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 1, which is characterized in that step
Suddenly conditions of vulcanization described in (3) is 160 ~ 200 DEG C, 16 ~ 18MPa.
4. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 1, which is characterized in that step
Suddenly the specific preparation step of modified carbon black described in (1) are as follows:
(1) carbon black is added in nitric acid, 40 ~ 60min is stirred with 400 ~ 500r/min revolving speed under room temperature, obtains mixed liquor；
(2) mixed liquor is placed in ultrasonic oscillator, 1 ~ 2h of ultrasonic disperse obtains dispersion liquid；
(3) dispersion liquid is placed in centrifugal separator, 10 ~ 15min is centrifugated with 4000 ~ 4500r/min revolving speed under room temperature, is gone
Lower layer's solid is washed with deionized 3 ~ 5 times, is placed in 40 ~ 50 DEG C of baking ovens dry 40 ~ 60min, obtains modified carbon black.
5. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 4, which is characterized in that institute
The parts by weight of the carbon black, nitric acid stated are the nitric acid of 30 ~ 40 parts of carbon blacks, 120 ~ 160 parts of mass concentrations 10%.
6. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 4, which is characterized in that step
Suddenly the power of ultrasonic disperse described in (2) is 400 ~ 500W.
7. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 1, which is characterized in that step
Suddenly the specific preparation step of acrylic rubber described in (1) are as follows:
(1) butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate are added in deionized water,
10 ~ 12min is stirred with 200 ~ 250r/min revolving speed under 50 ~ 60 DEG C of water bath condition, keeps the temperature, obtains crylic acid ester mixture liquid；
(2) sodium dithionite, ammonium persulfate are added in crylic acid ester mixture liquid, nitrogen protection are passed through, in 50 ~ 60 DEG C of water
1 ~ 2h is stirred to react with 240 ~ 280r/min revolving speed under the conditions of bath, obtains reaction lotion；
(3) by dehydrated alcohol be added reaction lotion in, under room temperature with 180 ~ 200r/min revolving speed stir 8 ~ 10min, stand 30 ~
40min, filtering, takes solid, obtains reaction polymer；
(4) reaction polymer is washed 2 ~ 4 times with dehydrated alcohol, then be washed with deionized 1 ~ 3 time, be placed in 60 ~ 70 DEG C of baking
Dry 40 ~ 60min, room temperature cooling obtain acrylic rubber in case.
8. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 7, which is characterized in that institute
Butyl acrylate, ethyl acrylate, methyl methacrylate, lauryl sodium sulfate, sodium dithionite, the persulfuric acid stated
Ammonium, dehydrated alcohol, deionized water parts by weight be 20 ~ 40 parts of butyl acrylates, 20 ~ 40 parts of ethyl acrylates, 20 ~ 40 parts of methyl
Methyl acrylate, 0.6 ~ 1.2 part of lauryl sodium sulfate, 0.1 ~ 0.2 part of sodium dithionite, 0.1 ~ 0.2 part of ammonium persulfate, 10
~ 20 parts of dehydrated alcohols, 40 ~ 80 parts of deionized waters.
9. a kind of preparation method of water lubriucated bearing composite rubber material according to claim 7, which is characterized in that step
Suddenly the rate that is passed through of nitrogen described in (2) is 30 ~ 40mL/min.
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