CN108794832A - A kind of bearing composite material and preparation method - Google Patents
A kind of bearing composite material and preparation method Download PDFInfo
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- CN108794832A CN108794832A CN201810318062.5A CN201810318062A CN108794832A CN 108794832 A CN108794832 A CN 108794832A CN 201810318062 A CN201810318062 A CN 201810318062A CN 108794832 A CN108794832 A CN 108794832A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
A kind of bearing composite material and preparation method, belongs to technical field of composite materials.Solve the problems, such as how to provide a kind of good bearing composite material and preparation method of comprehensive performance.The composite material of the present invention, is made of 100 parts by weight nitrile rubbers, 30-35 parts per weight of thermoplastic polyurethane, 10-15 parts by weight epoxy resin, 2-5 parts by weight epoxy resin curing agent, 3-8 parts by weight oyster shell whiting, 0.5-1 parts by weight titanium carbide, 3-4.5 parts by weight chlorinated paraffin, 2-4 parts by weight of polyurethane fiber, 0.5-1 parts by weight nano imvite, 2-3 parts by weight polycarbodiimide, 2-4 parts by weight polytetrafluoroethylene powder, 10-30 parts by weight of crosslinking agent, 3-5 parts of peroxide initiator and 0.5-1.5 parts by weight antioxidants.The composite material has good antibacterial property, wearability, water resistance, oil resistivity, anti-flammability, mechanical mechanics property and hot property.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of bearing composite material and preparation method.
Background technology
Bearing is that component that is fixed and reducing load friction coefficient is played in mechanical transmission course, its major function is branch
The mechanical rotary body of support is widely used in aeronautical engineering, flies to reduce mechanical load friction coefficient of the equipment in transmission process
The fields such as machine, automobile, ship, lathe, motor, household electrical appliance.
According to the difference of the friction properties of the moving elements, bearing can be divided into two class of rolling bearing and sliding bearing.Sliding bearing is
Refer to the bearing to work under sliding friction.Traditional sliding bearing mostly uses steel and is made, but the hardness of steel is relatively low, is done using steel
At bearing it is not wear-resisting, and heat resistance is poor, and when bearing is chronically at hot environment, bearing easily expands made of steel
Deformation, causes bearing corrosion, service life accordingly to shorten.Sliding bearing prepared by resin material can be lubricated with self-lubricating or using water
Agent has the advantages such as pollution-free, energy consumption is small, friction coefficient is low, security performance is high compared to traditional metal class sliding bearing,
Therefore it has obtained widely applying on naval vessel, still, the bearing inner sleeve of resin class bearing is often contacted with main shaft, because not having bullet
Property, it is poor to the sundries wrapping property such as silt, therefore abrasive wear is very serious, the service life is also very short.It is the oil resistivity of rubber class bearing, resistance to
Aqueous, heat-resisting quantity, damping noise reduction are excellent, but low speed stick-slip characteristic is apparent.If resin class bearing and rubber can be had both
The advantages of glue bearing, can be more suitable for the work requirements of existing bearing.In the prior art, there are some resinous materials and rubber
Class Material cladding is studied as bearing material, but the effect of obtained material is barely satisfactory.
Invention content
In view of this, the purpose of the present invention is how to provide one kind having good antibacterial property, wearability, water resistance, resistance to
The bearing composite material and preparation method of oiliness, anti-flammability, mechanical mechanics property and hot property.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem is taken.
Bearing composite material, composition and parts by weight are：
Preferably, the mesh number of the oyster shell whiting is 300-500.
Preferably, the antioxidant be antioxidant 1010, antioxidant 264, one or both of antioxidant 1076 with
On mixture.
Preferably, the thermoplastic polyurethane is polyether polyurethane.
Preferably, the epoxide number of the epoxy resin is 0.4-0.9；Epoxy resin is bisphenol A type epoxy resin, Bisphenol F
The mixing of one or more of type epoxy resin, novolac epoxy resin.
Preferably, the epoxy curing agent is a kind of in diethylenetriamine, triethylene tetramine, m-xylene diamine.
Preferably, the peroxide initiator is cumyl peroxide or benzoyl peroxide.
Preferably, the crosslinking agent is one or both of ethylene glycol, butanediol, hexylene glycol, 1,4-butanediol.
The present invention also provides the preparation methods of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, adds
Enter in mixer and be kneaded, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material.
Preferably, the cavity temperature of the mixer is 30-90 DEG C, mixing time 45-90min；The speed of mainshaft is
100-120rpm。
Compared with prior art, beneficial effects of the present invention are：
Bearing composite material provided by the invention has good antibacterial property, wearability, water resistance, oil resistivity, fire-retardant
Property, mechanical mechanics property and hot property.Through experimental tests, in room temperature, 300 DEG C and -20 DEG C of seawater, load 1000N, rotating speed
1000RPM, time 60min, abrasion loss are only respectively 0.002g-0.003g, 0.006g-0.010g and 0.003g-0.004g；It draws
It is 51MPa-54MPa, elongation at break 298%-321%, tearing strength 22.4KN/m-26.7KN/m, oxygen index (OI) to stretch intensity
It is 30 or more.
The preparation method of the bearing composite material of the offer of the present invention is simple for process, easy to operate.
Specific implementation mode
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are only the feature and advantage further illustrated the present invention, rather than to the claims in the present invention
Limitation.
The bearing composite material of the present invention, by the nitrile rubber of 100 parts by weight, the thermoplastic poly ammonia of 30-35 parts by weight
Ester, the epoxy resin of 10-15 parts by weight, the epoxy curing agent of 2-5 parts by weight, the oyster shell whiting of 3-8 parts by weight, 0.5-1 weights
Measure the nanometer illiteracy of the titanium carbide of part, the chlorinated paraffin of 3-4.5 parts by weight, the polyurethane fiber of 2-4 parts by weight, 0.5-1 parts by weight
De- soil, the polycarbodiimide of 2-3 parts by weight, the polytetrafluoroethylene powder of 2-4 parts by weight, the crosslinking agent of 10-30 parts by weight, 3-5
The peroxide initiator of parts by weight and the antioxidant composition of 0.5-1.5 parts by weight.
In the present invention, nitrile rubber is base material.
In the present invention, thermoplastic polyurethane can be that polyether polyurethane may be polyester polyurethane, to improve material
The water resistance of material, it is preferred to use polyether polyurethane, and hard section mass fraction is 40% or more.
In the present invention, on the one hand the addition of epoxy resin increases the interface binding force of material, on the other hand improve material
Corrosion resistance.Preferably, the epoxide number of epoxy resin is 0.4-0.9；Epoxy resin is bisphenol A type epoxy resin, Bisphenol F type ring
The mixing of one or more of oxygen resin, novolac epoxy resin.Epoxy curing agent is diethylenetriamine, triethylene four
It is a kind of in amine, m-xylene diamine.
In the present invention, the addition of oyster shell whiting can assign material excellent antibiotic property and water resistance, and reinforcing material is resistance to
Mill property and mechanical strength.To improve dispersibility, the preferably mesh number of oyster shell whiting is 300-500.Oyster shell whiting preferably 4 parts by weight.
In the present invention, titanium carbide is added, when material at high temperature rubs, friction coefficient can be effectively reduced, reduce friction
The generation of heat, even if also unaffected in hygrometric state；And the wearability of material is improved, it can ensure that material has under high temperature hygrometric state
There are enough intensity, hardness to maintain running at high speed for bearing.
In the present invention, chlorinated paraffin is added, that is, is used as compatilizer, improves the compatibility of material.It is used as self-lubricating agent, drop again
Low-friction coefficient；Meanwhile chlorine element is introduced in the material, increase the hydrolytic resistance of material and improves the anti-flammability of material.It is preferred that
Chlorinated paraffin is 4-4.5 parts by weight.
In the present invention, the polyurethane fiber of addition and polyurethane homogeneity does not introduce dissimilar materials, improves material extension at break
While rate, do not increase interfacial separation, does not influence material impact resistance.
In the present invention, the addition of nano imvite makes the leakproofness of polyurethane material and high temperature resistance increase substantially,
And then the antibiotic property of material is improved, and coordinate with chlorinated paraffin, increase the anti-flammability of material.
In the present invention, polycarbodiimide provides material excellent hydrolysis and acid-fast alkali-proof corrosive power.
In the present invention, polytetrafluoroethylene powder improves the wear-resisting property and mechanical property of material, and can improve polyurethane material
Hydrolysis ability.
In the present invention, antioxidant be antioxidant 1010, antioxidant 264, one or more of 1076 mixing
Object.
In the present invention, peroxide initiator is cumyl peroxide or benzoyl peroxide.
In the present invention, crosslinking agent is one or both of ethylene glycol, butanediol, hexylene glycol, 1,4-butanediol.
The present invention also provides the preparation methods of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, adds
Enter in mixer and be kneaded, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material.It is preferred that
, the cavity temperature of the mixer is 30-90 DEG C, mixing time 45-90min；The speed of mainshaft is 100-120rpm.
It further illustrates the present invention with reference to embodiments.
Embodiment 1
Bearing composite material, by the nitrile rubber of 100 parts by weight, 30 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 15 parts by weight, the diethylenetriamine of 5 parts by weight, the oyster shell whiting of 8 parts by weight, 0.5 parts by weight
Titanium, the chlorinated paraffin of 4.5 parts by weight, the polyurethane fiber of 4 parts by weight, the nano imvite of 0.5 parts by weight, 3 parts by weight it is poly-
Carbodiimides, the polytetrafluoroethylene powder of 4 parts by weight, the 1,4- butanediols of 10 parts by weight, 5 parts by weight benzoyl peroxide and
The antioxidant 1010 of 1.5 parts by weight forms.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
Embodiment 2
Bearing composite material, by the nitrile rubber of 100 parts by weight, 35 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 10 parts by weight, the diethylenetriamine of 2 parts by weight, the oyster shell whiting of 3 parts by weight, 1 parts by weight
The poly- carbonization of titanium, the chlorinated paraffin of 3 parts by weight, the polyurethane fiber of 2 parts by weight, the nano imvite of 1 parts by weight, 2 parts by weight
Diimine, the polytetrafluoroethylene powder of 2 parts by weight, the butanediol of 30 parts by weight, the benzoyl peroxide of 3 parts by weight and 0.5 weight
The antioxidant 1010 composition of part.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 60 DEG C, mixing time 75min, speed of mainshaft 100rpm.
Embodiment 3
Bearing composite material, by the nitrile rubber of 100 parts by weight, 33 parts by weight thermoplastic polyurethane (polyester-type),
The carbonization of the bisphenol A type epoxy resin of 12 parts by weight, the diethylenetriamine of 3 parts by weight, the oyster shell whiting of 5 parts by weight, 0.8 parts by weight
Titanium, the chlorinated paraffin of 4 parts by weight, the polyurethane fiber of 3 parts by weight, the nano imvite of 0.6 parts by weight, 2.5 parts by weight it is poly-
Carbodiimides, the polytetrafluoroethylene powder of 3 parts by weight, the crosslinking agent of 20 parts by weight, the benzoyl peroxide of 4 parts by weight and 1.0
The antioxidant 1076 of parts by weight forms.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 30 DEG C, mixing time 90min, speed of mainshaft 120rpm.
Comparative example 1
Bearing composite material, by the nitrile rubber of 100 parts by weight, the thermoplastic polyurethane (polyether-type) of 30 parts by weight, 8
The oyster shell whiting of parts by weight, the titanium carbide of 0.5 parts by weight, the chlorinated paraffin of 4.5 parts by weight, the polyurethane fiber of 4 parts by weight, 0.5
The 1,4- of the nano imvite of parts by weight, the polycarbodiimide of 3 parts by weight, the polytetrafluoroethylene powder of 4 parts by weight, 10 parts by weight
The antioxidant 1010 of butanediol, the benzoyl peroxide of 5 parts by weight and 1.5 parts by weight forms.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
Comparative example 2
Bearing composite material, by the nitrile rubber of 100 parts by weight, 30 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 15 parts by weight, the diethylenetriamine of 5 parts by weight, the oyster shell whiting of 1 parts by weight, 0.5 parts by weight
Titanium, the chlorinated paraffin of 4.5 parts by weight, the polyurethane fiber of 4 parts by weight, the nano imvite of 0.5 parts by weight, 3 parts by weight it is poly-
Carbodiimides, the polytetrafluoroethylene powder of 4 parts by weight, the 1,4- butanediols of 10 parts by weight, 5 parts by weight benzoyl peroxide and
1.5 the antioxidant 1010 of parts by weight forms.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
Comparative example 3
Bearing composite material, by the nitrile rubber of 100 parts by weight, 30 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 15 parts by weight, the diethylenetriamine of 5 parts by weight, the oyster shell whiting of 8 parts by weight, 0.5 parts by weight
Titanium, the polyurethane fiber of 4 parts by weight, the nano imvite of 0.5 parts by weight, the polycarbodiimide of 3 parts by weight, 4 parts by weight
Polytetrafluoroethylene powder, the 1,4- butanediols of 10 parts by weight, 5 parts by weight benzoyl peroxide and 1.5 parts by weight antioxidant
1010 compositions.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
Comparative example 4
Bearing composite material, by the nitrile rubber of 100 parts by weight, 30 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 15 parts by weight, the diethylenetriamine of 5 parts by weight, the oyster shell whiting of 8 parts by weight, 0.5 parts by weight
The poly- carbon of titanium, the chlorinated paraffin of 4.5 parts by weight, the glass fibre of 4 parts by weight, the nano imvite of 0.5 parts by weight, 3 parts by weight
Change diimine, the polytetrafluoroethylene powder of 4 parts by weight, the 1,4- butanediols of 10 parts by weight, 5 parts by weight benzoyl peroxide and
The antioxidant 1010 of 1.5 parts by weight forms.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
Comparative example 5
Bearing composite material, by the nitrile rubber of 100 parts by weight, 30 parts by weight thermoplastic polyurethane (polyether-type),
The carbonization of the bisphenol A type epoxy resin of 15 parts by weight, the diethylenetriamine of 5 parts by weight, the oyster shell whiting of 8 parts by weight, 0.5 parts by weight
Titanium, the chlorinated paraffin of 4.5 parts by weight, the polyurethane fiber of 4 parts by weight, the polycarbodiimide of 3 parts by weight, 4 parts by weight it is poly-
Tetrafluoroethene powder, the 1,4- butanediols of 10 parts by weight, 5 parts by weight benzoyl peroxide and 1.5 parts by weight antioxidant
1010 compositions.
The preparation method of above-mentioned bearing composite material：Composition and parts by weight are first pressed, raw material is weighed, is added in mixer and mixes
Refining, obtains rubber compound；Then rubber compound is placed in mold, after press cure, obtains composite material, the cavity temperature of mixer
It is 90 DEG C, mixing time 45min, speed of mainshaft 120rpm.
The performance of the composite material of embodiment 1-3 and comparative example 1-5 is detected, the results are shown in Table 1.Wherein, it draws
Stretch intensity and examination criteria that elongation at break uses for：GB/T1701-2001.Water lubrication wearability and damp and hot wear-resisting property
Detection method is, respectively in room temperature, 225 DEG C and -20 DEG C of seawater, using MPV50 type ship bearing testers, test condition
For load 1000N, rotating speed 1000RPM, time 60min；The front and back weight difference of sample friction is measured as abrasion loss.Antibiotic property
Test condition is：It by sample preparation at the batten at 10mm × 10mm × 2mm, is put into the culture dish of sterilizing, into culture dish
Sample on the bacterium solution that 0.5 milliliter of coliform count is adjusted to about 10/milliliter is added dropwise every time, by culture dish from outer cover
It is good, it prevents thalline to be mixed into culture dish from outside, takes care of at room temperature.Bacterium solution is taken out after for 24 hours, is moved into culture medium and is trained
It supports, measures the bacterium number for being examined body.Anti-flammability is measured according to ASTM-D2832.
The performance characterization of the composite material of table 1 embodiment 1-3 and comparative example 1-6
As it can be seen from table 1 bearing composite material provided by the invention has good antibacterial property, wearability, water-fast
Property, oil resistivity, anti-flammability, mechanical mechanics property and hot property.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. bearing composite material, which is characterized in that composition and parts by weight are：
2. bearing composite material according to claim 1, which is characterized in that the mesh number of the oyster shell whiting is 300-500.
3. bearing composite material according to claim 1, which is characterized in that the antioxidant is antioxidant 1010, resists
The mixture of one or more of oxygen agent 264, antioxidant 1076.
4. bearing composite material according to claim 1, which is characterized in that the thermoplastic polyurethane is the poly- ammonia of polyether-type
Ester.
5. bearing composite material according to claim 1, which is characterized in that the epoxide number of the epoxy resin is 0.4-
0.9；Epoxy resin is the mixed of one or more of bisphenol A type epoxy resin, bisphenol f type epoxy resin, novolac epoxy resin
It closes.
6. bearing composite material according to claim 1, which is characterized in that the epoxy curing agent is divinyl three
It is a kind of in amine, triethylene tetramine, m-xylene diamine.
7. bearing composite material according to claim 1, which is characterized in that the peroxide initiator is peroxidating two
Isopropylbenzene or benzoyl peroxide.
8. bearing composite material according to claim 1, which is characterized in that the crosslinking agent be ethylene glycol, butanediol, oneself
One or both of glycol, 1,4- butanediols.
9. the preparation method of claim 1-8 any one bearing composite materials, which is characterized in that first press composition and weight
Part, raw material is weighed, is added in mixer and is kneaded, obtain rubber compound；Then rubber compound is placed in mold, after press cure, is obtained
To composite material.
10. the preparation method of bearing composite material according to claim 9, which is characterized in that the chamber of the mixer
Temperature is 30-90 DEG C, mixing time 45-90min；The speed of mainshaft is 100-120rpm.
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| CN111621137A (en) * | 2020-06-22 | 2020-09-04 | 福州大学 | Low-smoke low-toxicity flame-retardant thermoplastic polyurethane composite material and preparation method thereof |
| CN111621137B (en) * | 2020-06-22 | 2021-12-21 | 福州大学 | Low-smoke low-toxicity flame-retardant thermoplastic polyurethane composite material and preparation method thereof |
| CN113214550A (en) * | 2021-05-18 | 2021-08-06 | 中国科学院兰州化学物理研究所 | Water-lubricated bearing composite material and preparation method thereof |
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Application publication date: 20181113 |