CN106519650B - A kind of polymer composite and polymer composite bearing shell - Google Patents
A kind of polymer composite and polymer composite bearing shell Download PDFInfo
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- CN106519650B CN106519650B CN201611004860.8A CN201611004860A CN106519650B CN 106519650 B CN106519650 B CN 106519650B CN 201611004860 A CN201611004860 A CN 201611004860A CN 106519650 B CN106519650 B CN 106519650B
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08K2201/00—Specific properties of additives
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- C—CHEMISTRY; METALLURGY
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- 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
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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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
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Abstract
The present invention provides a kind of polymer composites, and in parts by weight, be prepared by the raw material for including following component: 100 parts of performed polymer, the performed polymer are prepared by diisocyanate and dihydric alcohol polymerization reaction；4~41 parts of cross-linking aid；1~40 part of functional polymer；A parts of graphene, 5 A≤30 <；3~30 parts of carbon fibers；2~25 parts of coupling agents and/or silicone oil；2~50 parts of lubrication nanoparticle.Compared with prior art, the present invention introduces functional polymer and graphene filler simultaneously in polymer composite, functional polymer, graphene and performed polymer, cross-linking aid comprehensive function under, the polymer composite made has preferable wear resistance, is still being able to maintain preferable mechanical property with higher hardness and bearing capacity while.The present invention also provides a kind of polymer composite bearing shells.
Description
Technical field
The present invention relates to technical field of composite materials more particularly to a kind of polymer composites and polymer composite
Bearing shell.
Background technique
Bearing shell is the part of sliding bearing and journal contact, and shape is the semi-cylindrical of tiles, there is monoblock type and dissection type
Two kinds.Bush material generally by the wear-resistant materials such as bronze, antifriction alloy, timber, ceramics, graphite, polymer or rubber prepare and
At.The bearing shell weight of metal material is big, and shafting structure is complicated, and coefficient of friction is larger；The bearing shell wearability of ceramics and graphite material
It is good, but matter is crisp, not impact resistance；The bearing shell wearability of rubber material is good, elasticity is good, but bearing capacity is poor, not easy to be processed.
Polymer composites bearing shell overcomes the shortcomings that above-mentioned material bearing shell, and hardness is adjustable, elasticity is good, wearability is good,
It can use, can also be used under unlubricated ambient condition under the lubricant mediums such as water or oil.Therefore, using polymer as bearing shell
Material gets more and more people's extensive concerning, such as preferable using nylon as the macromolecule bush material wearability of representative, but heat resistance compared with
Difference keeps its resistance to dry friction poor；Preferable as the bush material heat resistance of representative using polytetrafluoroethylene (PTFE), coefficient of friction is small, still
It is not easy with metal be bonded；It is high as the bush material wear-resisting property of representative using poly(aryl ether ketone), it is easy to process, but its elasticity is smaller,
It is unfavorable for the protection to axis.
Although there is multiple polymers material bearing shell in the prior art, but the bearing shell comprehensive performance of these materials is poor.Cause
This, is badly in need of that a kind of elasticity modulus is high, bearing capacity is strong, the bush material of the good combination properties such as easy to process at present, to be applied to
The various fields such as ship, water pump, hydraulic generator, steam turbine, lathe.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of polymer composite and bearing shell, height provided by the invention
Molecular composite material elasticity modulus is high, bearing capacity is strong and easy to process.
The present invention provides a kind of polymer composites, in parts by weight, are prepared by the raw material for including following component
It arrives:
100 parts of performed polymer, the performed polymer are prepared by diisocyanate and dihydric alcohol polymerization reaction；
4~41 parts of cross-linking aid；
1~40 part of functional polymer；
A parts of graphene, 5 A≤30 <；
3~30 parts of carbon fibers；
2~25 parts of coupling agents and/or silicone oil；
2~50 parts of lubrication nanoparticle.
Preferably, the diisocyanate includes isophorone diisocyanate, toluene di-isocyanate(TDI), dimethylbenzene alkane-
4,4 '-diisocyanate, 1,5- naphthalene diisocyanate, paraphenylene diisocyanate, dimethylbenzene biphenyl diisocyanate and hexamethylene
One or more of diisocyanate.
Preferably, the dihydric alcohol includes polytetrafluoro furans glycol, polycaprolactone glycol, polyethylene glycol, polypropylene glycol, gathers
One or more of carbonate diol and polyoxytetramethylene glycol.
Preferably, the cross-linking aid includes 3,3 '-two chloro- 4,4 '-diaminodiphenyl-methanes, 1,4-butanediol, right
One of benzenediol dihydroxyethyl ether, glycerol, trimethylolpropane, 1,3 butylene glycol and 3,5- dimethythiotoluene diamine or
It is several.
Preferably, the functional polymer includes polyimide resin, ultra-high molecular weight polyethylene, polyvinyl chloride, ring
One in oxygen resin, polyphenylene sulfide, polyformaldehyde, polycarbonate, polytetrafluoroethylene (PTFE), phenolic resin, ABS resin, nylon and paraffin
Kind is several.
Preferably, the coupling agent is silane coupling agent.
Preferably, the lubrication nanoparticle includes one of metal powder, molybdenum disulfide, graphite and talcum powder or several
Kind.
Preferably, the metal powder includes tungsten powder, molybdenum powder, copper powder, cobalt powder, nickel powder, titanium valve, aluminium powder, glass putty, lead powder, manganese
One or more of powder and magnesium powder.
Preferably, the mass content of isocyanate group is 5~10% in the performed polymer.
Compared with prior art, the present invention introduces functional polymer simultaneously in polymer composite and graphene is filled out
Material, in functional polymer and graphene filler and performed polymer, cross-linking aid and other compositions carbon fiber, coupling agent and lubrication
Under the comprehensive function of nanoparticle, the high molecular material made has preferable wear resistance, with higher
Preferable mechanical property is still able to maintain while hardness and bearing capacity.Therefore, polymer composite provided by the invention
Elasticity modulus is high, bearing capacity is strong and easy to process, is highly suitable to be applied for bearing shell product.
The present invention provides a kind of polymer composite bearing shells, including macromolecule composite wood described in above-mentioned technical proposal
Material.
Bearing shell provided by the invention includes polymer composite described in above-mentioned technical proposal, and this bearing shell has simultaneously
Elasticity modulus is high, bearing capacity is strong, the good comprehensive performance such as easy to process, has broad application prospects.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of polymer composites, in parts by weight, are prepared by the raw material for including following component
It arrives:
100 parts of performed polymer, the performed polymer are prepared by diisocyanate and dihydric alcohol polymerization reaction；
4~41 parts of cross-linking aid；
1~40 part of functional polymer；
A parts of graphene, 5 A≤30 <；
3~30 parts of carbon fibers；
2~25 parts of coupling agents and/or silicone oil；
2~50 parts of lubrication nanoparticle.
Polymer composite provided by the invention includes the performed polymer of 100 parts by weight, and the performed polymer is by diisocyanate
Ester and dihydric alcohol polymerization reaction are prepared.In the present invention, the nco value of the performed polymer is preferably 4~25%, more preferably
5~15%, most preferably 5~10%.In the present invention, the diisocyanate can for aliphatic diisocyanate and/or
Aromatic diisocyanate preferably includes isophorone diisocyanate, toluene di-isocyanate(TDI) (TDI), diphenyl-methane -4,
4 '-diisocyanate (MDI), 1,5- naphthalene diisocyanate (NDI), paraphenylene diisocyanate (PPDI), dimethyl diphenyl two are different
One or more of cyanate (TODI) and hexamethylene diisocyanate (HDI), more preferably paraphenylene diisocyanate
(PPDI) or 1,5- naphthalene diisocyanate (NDI).
In the present invention, the number-average molecular weight of the dihydric alcohol is preferably 800~25000, more preferably 1000~
10000, most preferably 2000~4000.In the present invention, the dihydric alcohol preferably includes polytetrahydrofuran diol, polycaprolactone
One or more of glycol, polyethylene glycol, polypropylene glycol, polycarbonate glycol and polyoxytetramethylene glycol, more preferably
For polytetrahydrofuran diol.
In the present invention, the mass content of isocyanate group is preferably 5~10% in the performed polymer, more preferably 6~
7%.In the present invention, mass content of the dihydric alcohol in performed polymer is preferably 90~95%, and more preferably 93~94%.
In the present invention, the preparation method of the performed polymer is preferred are as follows:
Dihydric alcohol and diisocyanate are subjected to polymerization reaction, obtain performed polymer.
In the present invention, preferably dihydric alcohol is carried out dehydrating before the polymerization reaction.In the present invention, described de-
The temperature of water process is preferably 80~200 DEG C, more preferably 100~160 DEG C, most preferably 120~140 DEG C.In the present invention,
The time of the dehydration is preferably 1~8 hour, more preferably 2~6 hours, most preferably 3~5 hours.In the present invention
In, the dehydration preferably carries out under vacuum conditions.
In the present invention, the polymerization reaction preferably carries out under the protection of nitrogen.In the present invention, the polymerization reaction
Temperature be preferably 80~130 DEG C, more preferably 90~120 DEG C, most preferably 100~110 DEG C.In the present invention, described poly-
The time for closing reaction is preferably 5~240min, more preferably 10~200min, more preferably 50~150min, more preferably 80
~120min, most preferably 100min.
In the present invention, the parts by weight of the cross-linking aid are preferably 4~41 parts, more preferably 10~35 parts, more excellent
It is selected as 15~30 parts, most preferably 20~25 parts.In the present invention, the cross-linking aid preferably includes 3,3 '-two chloro- 4,4 '-
Diaminodiphenyl-methane (MOCA), 1,4- butanediol (BDO), hydroquinone two hydroxy ethyl ether (HQEE), glycerol, trihydroxy methyl
Propane (TMP), 1,3-BDO and 3, one or more of 5- dimethythiotoluene diamine (DMTDA), more preferably Isosorbide-5-Nitrae-
Butanediol.
In the present invention, the parts by weight of the functional polymer are preferably 1~40 part, and more preferably 10~30 parts,
More preferably 15~25 parts, most preferably 20 parts.In the present invention, the functional polymer preferably includes polyimides tree
Rouge, ultra-high molecular weight polyethylene, polyvinyl chloride, epoxy resin, polyphenylene sulfide, polyformaldehyde, polycarbonate, polytetrafluoroethylene (PTFE), phenol
One or more of urea formaldehyde, ABS resin, nylon and paraffin, more preferably epoxy resin, ultra-high molecular weight polyethylene, stone
One or more of wax and polytetrafluoroethylene (PTFE), most preferably polytetrafluoroethylene (PTFE) or ultra-high molecular weight polyethylene.
In the present invention, the ultra-high molecular weight polyethylene is preferably powdered or fiber.In the present invention, described super
The number-average molecular weight of High molecular weight polyethylene is preferably 300000~10000000, and more preferably 1000000~8000000, more
Preferably 3000000~6000000, most preferably 4000000~5000000.In the present invention, the superhigh molecular weight polyethylene
The partial size of alkene is preferably 20~200 μm, more preferably 50~150 μm, most preferably 80~120 μm.
In the present invention, the parts by weight of the graphene are preferably 5~30 parts, and more preferably 10~20 parts, most preferably
It is 15 parts.The present invention does not have special limitation to the type of the graphene and source, and use is well known to those skilled in the art
Graphene can be bought by market and be obtained.
In the present invention, the parts by weight of the carbon fiber are preferably 3~30 parts, and more preferably 5~20 parts, most preferably
15 parts.In the present invention, the carbon fiber can be improved the mechanical properties such as the intensity of polymer composite.The present invention is to described
The type of carbon fiber and source do not have special limitation, can be by market using carbon fiber well known to those skilled in the art
Purchase obtains.In the present invention, the carbon fiber preferably carbon fiber of resistance to combustion.
In the present invention, the parts by weight of the lubrication nanoparticle are preferably 2~50 parts, and more preferably 3~30 parts, more
Preferably 5~20 parts, most preferably 15 parts.In the present invention, the lubrication nanoparticle preferably includes metal powder, curing
One or more of molybdenum, graphite and talcum powder more preferably include metal powder, molybdenum disulfide, graphite and talcum powder.In the present invention
In, the metal powder, molybdenum disulfide, graphite and talcum powder mass ratio be preferably B:1~15:C:D, 0 < B≤10,0 < C≤
8,0 D≤10 <；More preferably 2~6: 4~10: 1~5: 1~5, most preferably 3:6:2:1.
In the present invention, the metal powder preferably include tungsten powder, molybdenum powder, copper powder, cobalt powder, nickel powder, titanium valve, aluminium powder, glass putty,
One or more of lead powder, manganese powder and magnesium powder, more preferably copper powder.In the present invention, the partial size of the molybdenum disulfide is preferred
It is 0.5~2 μm, more preferably 1~1.5 μm, most preferably 1.2~1.3 μm.In the present invention, the graphite is preferably colloid
Graphite.In the present invention, the granularity of the aquadag is preferably 100nm~2.5 μm, more preferably 100nm~1.0 μm, most
Preferably 400nm.In the present invention, the partial size of the talcum powder is preferably 200~1250 mesh, more preferably 325~800 mesh,
Most preferably 600 mesh.
In the present invention, the parts by weight of the coupling agent or silicone oil are preferably 2~25 parts, more preferably 2~10 parts, most
Preferably 5 parts.In the present invention, the effect of the coupling agent is to improve the mobility and filler compatibility that pour material.At this
In invention, the coupling agent is preferably silane coupling agent.The present invention is not special to the type of the silane coupling agent and source
Limitation, using silane coupling agent well known to those skilled in the art, such as KH550, KH560 or KH570 coupling agent, preferably
For KH560 coupling agent.In the present invention, the effect of the silicone oil is mobility and the reduction material friction system for improving pouring material
Number.The present invention does not have special limitation to the type of the silicone oil and source, is using silicone oil well known to those skilled in the art
Can, it can be bought and be obtained by market.
The present invention does not have special limitation to the preparation method of the polymer composite, under stirring conditions, will
Performed polymer, functional polymer, nano lubricating particle, graphene, carbon fiber, coupling agent and/or silicone oil are sufficiently mixed in proportion
After obtain mixed liquor；
It is cast in preheated mold and molds after the mixed liquor is mixed with cross-linking aid；
It is demoulded after product after molding is vulcanized；
Product after demoulding is vulcanized again, obtains polymer composite.
In the present invention, the performed polymer, functional polymer, nano lubricating particle, graphene, carbon fiber, coupling agent
And/or the temperature of silicone oil mixing is preferably 80~200 DEG C, more preferably 100~180 DEG C, more preferably 120~160 DEG C are optimal
It is selected as 130~140 DEG C.In the present invention, the performed polymer, functional polymer, nano lubricating particle, graphene, carbon fiber,
The time of coupling agent and/or silicone oil mixing is preferably 10~120min, more preferably 50~100min, more preferably 60~
100min, most preferably 90min.
In the present invention, the vulcanization can carry out in vulcanizing press.In the present invention, the temperature of the vulcanization is excellent
It is selected as 70~170 DEG C, more preferably 100~150 DEG C, most preferably 120~130 DEG C.In the present invention, the time of the vulcanization
Preferably 5~150 minutes, more preferably 10~120 minutes, more preferably 50~100 minutes, most preferably 70~80 minutes.
In the present invention, the pressure of the vulcanization is preferably greater than 5MPa.In the present invention, the time of the revulcanization be preferably 70~
150 DEG C, more preferably 100~120 DEG C.In the present invention, the time of the revulcanization is preferably 4~40 hours, more preferably
It is 10~30 hours, more preferably 15~25 hours, most preferably 20 hours.
The present invention provides a kind of polymer composite bearing shell, the bearing shell includes high score described in above-mentioned technical proposal
Sub- composite material, the polymer composite has lower coefficient of friction, and has compared with high-bearing capacity and hardness
Also there is preferable mechanical strength simultaneously, the bearing shell that this polymer composite is prepared has very excellent rub resistance
Polishing machine, elasticity modulus are high, bearing capacity is good and easy to process.
Raw material used in following embodiment of the present invention is commercial goods.
Embodiment 1
Polytetrahydrofuran diol (PTMEG2000) 1Kg is weighed, in 130 DEG C of there-necked flasks, heated under vacuum stirring 2
Hour, after system is down to 110 DEG C, lead to N2Protection, is gradually added into toluene di-isocyanate(TDI) (TDI) 269g, and stirring 100min obtains pre-
Ultra-high molecular weight polyethylene micro mist 269g, graphene are added into performed polymer under the conditions of speed of agitator is 800rpm for aggressiveness
190g, carbon fiber 190g, copper powder 38g, KH560 63g, molybdenum disulfide 76g, epoxy resin 114g.60min is sufficiently stirred, stirs
It after uniformly, is added dropwise under Isosorbide-5-Nitrae butanediol 186g, 1000rpm revolving speed and stirs 5min, be added in 110 DEG C of sufficient molds of preheating, close
Mould is placed on 110 DEG C of vulcanizing presses, and pressurize 1.0MPa, after vulcanization 1.5 hours, takes out mold, demoulding is taken out sample and is placed in
120 DEG C after baking close annealing 3 hours to get polymer composite and its axle bush product.
The hardness for the polymer composite sample that the test embodiment of the present invention 1 is prepared is 60shoreD (GB/
T2411-2008)；Tensile strength is 37MPa, and elongation at break is 230% (GB/T1701-2001)；Impact strength is 50KJ/
cm2(GB/T1043.1-2008)；The dry state coefficient of waste is 1.8 × 10-9cm3/N.m(GB/T 3960-1983)；Dry friction coefficient
It is 0.06~0.14, water lubrication coefficient of friction is 0.005~0.016 (GB/T 3960-1983).
Embodiment 2
Polycaprolactone glycol (Mn=2000) 1Kg is weighed, in 130 DEG C of there-necked flasks, heated under vacuum stirring 2 is small
When, after system is down to 110 DEG C, lead to N2Protection, is gradually added into 1,5- naphthalene diisocyanate (NDI) 269g, and stirring 100min obtains pre-
Ptfe micropowder 269g, superhigh molecular weight polyethylene are added into performed polymer under the conditions of speed of agitator is 800rpm for aggressiveness
Alkene 50g, graphene 200g, carbon fiber 195g, copper powder 40g, KH570 63g, silicone oil 20g, molybdenum disulfide 76g, zinc oxide 23g,
Epoxy resin 114g.60min is sufficiently stirred, after mixing evenly, is added dropwise under Isosorbide-5-Nitrae butanediol 186g, 1000rpm revolving speed and stirs
5min is added in 110 DEG C of sufficient molds of preheating, and molding is placed on 110 DEG C of vulcanizing presses, and pressurize 15MPa, vulcanization 1.5
After hour, take out mold, demoulding, take out sample be placed in after 120 DEG C of bakings close annealing 3 hours to get polymer composite and
Its axle bush product.
The hardness for the polymer composite sample that the test embodiment of the present invention 2 is prepared is 65shoreD (GB/
T2411-2008)；Tensile strength is 35MPa, and elongation at break is 220% (GB/T1701-2001)；Impact strength is 52KJ/
cm2(GB/T1043.1-2008)；The dry state coefficient of waste is 1.3 × 10-9cm3/N.m(GB/T 3960-1983)；Dry friction coefficient
It is 0.05~0.12, water lubrication coefficient of friction is 0.003~0.020 (GB/T 3960-1983).
Embodiment 3
Polycaprolactone glycol (Mn=2000) 1Kg is weighed, in 130 DEG C of there-necked flasks, heated under vacuum stirring 2 is small
When, after system is down to 110 DEG C, lead to N2Protection, is gradually added into 1,5- naphthalene diisocyanate (NDI) 269g, and stirring 100min obtains pre-
Polyformaldehyde 200g, paraffin 170g, graphene 375g, carbon are added into performed polymer under the conditions of speed of agitator is 800rpm for aggressiveness
Fiber 251g, copper powder 40g, KH570 63g, zinc oxide 53g, epoxy resin 114g.60min is sufficiently stirred, after mixing evenly, drop
Add MOCA 186g, 5min is stirred under 1000rpm revolving speed, is added in 110 DEG C of sufficient molds of preheating, molding is placed in 110 DEG C
On vulcanizing press, pressurize 15MPa, after vulcanization 1.5 hours, takes out mold, demoulding, taking-up sample, which is placed in 120 DEG C of baking ovens, to move back
Fire is after 3 hours to get polymer composite and its axle bush product.
The hardness for the polymer composite sample that the test embodiment of the present invention 3 is prepared is 68shoreD (GB/
T2411-2008)；Tensile strength is 34MPa, and elongation at break is 245% (GB/T 1701-2001)；Impact strength is 53KJ/
cm2(GB/T1043.1-2008)；The dry state coefficient of waste is 1.4 × 10-9cm3/N.m(GB/T 3960-1983)；Dry friction coefficient
It is 0.04~0.15, water lubrication coefficient of friction is 0.003~0.010 (GB/T 3960-1983).
Embodiment 4
Polyoxytetramethylene glycol (Mn=3000) 1Kg is weighed, in 130 DEG C of there-necked flasks, heated under vacuum is stirred
It mixes 2 hours, after system is down to 110 DEG C, leads to N2Protection is gradually added into 1,5- naphthalene diisocyanate (NDI) 425g, stirs 100min
Performed polymer is obtained, under the conditions of speed of agitator is 800rpm, nylon 170g, polyphenylene sulfide 98g, graphene are added into performed polymer
305g, carbon fiber 401g, molybdenum powder 71g, silicone oil 63g, aquadag 50g.60min is sufficiently stirred, after mixing evenly, is added dropwise
5min is stirred under HQEE216g, 1000rpm revolving speed, is added in 110 DEG C of sufficient molds of preheating, molding is placed in 110 DEG C of plates
On vulcanizer, pressurize 15MPa, after vulcanization 1.5 hours, takes out mold, demoulding, it is small that taking-up sample is placed in 120 DEG C of baking close annealings 3
When after to get polymer composite and its axle bush product.
The hardness for the polymer composite sample that the test embodiment of the present invention 4 is prepared is 70shoreD (GB/
T2411-2008)；Tensile strength is 35MPa, and elongation at break is 255% (GB/T1701-2001)；Impact strength is 55KJ/
cm2(GB/T1043.1-2008)；The dry state coefficient of waste is 1.2 × 10-9cm3/N.m(GB/T 3960-1983)；Dry friction coefficient
It is 0.02~0.12, water lubrication coefficient of friction is 0.001~0.009 (GB/T 3960-1983).
Embodiment 5
Polycarbonate glycol (Mn=4000) 1Kg is weighed, in 130 DEG C of there-necked flasks, heated under vacuum stirring 2 is small
When, after system is down to 110 DEG C, lead to N2Protection, is gradually added into paraphenylene diisocyanate (PPDI) 230g, and stirring 100min obtains pre-polymerization
Polytetrafluoroethylene (PTFE) 200g, paraffin 170g, graphene 375g are added into performed polymer under the conditions of speed of agitator is 800rpm for body,
Carbon fiber 251g, copper powder 40g, KH570 63g, zinc oxide 53g, epoxy resin 114g.60min is sufficiently stirred, after mixing evenly,
HQEE 386g is added dropwise, 5min is stirred under 1000rpm revolving speed, is added in 110 DEG C of sufficient molds of preheating, molding is placed in 110
On DEG C vulcanizing press, pressurize 15MPa, after vulcanization 1.5 hours, takes out mold, demoulding is taken out sample and is placed in 120 DEG C of baking ovens
To get polymer composite and its axle bush product after annealing 3 hours.
The hardness for the polymer composite sample that the test embodiment of the present invention 5 is prepared is 68shoreD (GB/
T2411-2008)；Tensile strength is 37MPa, and elongation at break is 260% (GB/T1701-2001)；Impact strength is 57KJ/
cm2(GB/T1043.1-2008)；The dry state coefficient of waste is 1.5 × 10-9cm3/N.m(GB/T 3960-1983)；Dry friction coefficient
It is 0.02~0.13, water lubrication coefficient of friction is 0.002~0.009 (GB/T 3960-1983).
Claims (8)
1. a kind of polymer composite is prepared by the raw material of following component in parts by weight:
100 parts of performed polymer, the performed polymer are prepared by diisocyanate and dihydric alcohol polymerization reaction；
4~41 parts of cross-linking aid；
1~40 part of functional polymer；
A parts of graphene, 5 A≤30 <；
3~30 parts of carbon fibers；
2~25 parts of silane coupling agents and/or silicone oil；
2~50 parts of lubrication nanoparticle；The lubrication nanoparticle is metal powder, molybdenum disulfide, graphite and talcum powder.
2. polymer composite according to claim 1, which is characterized in that the diisocyanate includes isophorone
It is diisocyanate, toluene di-isocyanate(TDI), dimethylbenzene alkane -4,4 '-diisocyanate, 1,5- naphthalene diisocyanate, different to benzene two
One or more of cyanate, dimethylbenzene biphenyl diisocyanate and hexamethylene diisocyanate.
3. polymer composite according to claim 1, which is characterized in that the dihydric alcohol includes polycaprolactone two
One or more of alcohol, polyethylene glycol, polypropylene glycol, polycarbonate glycol and polyoxytetramethylene glycol.
4. polymer composite according to claim 1, which is characterized in that the cross-linking aid includes 3, and 3 '-two is chloro-
4,4 '-diaminodiphenyl-methanes, 1,4- butanediol, hydroquinone two hydroxy ethyl ether, glycerol, trimethylolpropane, 1,3- fourth
One or more of two pure and mild 3,5- dimethythiotoluene diamines.
5. polymer composite according to claim 1, which is characterized in that the functional polymer includes polyamides Asia
Polyimide resin, ultra-high molecular weight polyethylene, polyvinyl chloride, epoxy resin, polyphenylene sulfide, polyformaldehyde, polycarbonate, polytetrafluoroethyl-ne
One or more of alkene, phenolic resin, ABS resin, nylon and paraffin.
6. polymer composite according to claim 1, which is characterized in that the metal powder includes tungsten powder, molybdenum powder, copper
One or more of powder, cobalt powder, nickel powder, titanium valve, aluminium powder, glass putty, lead powder, manganese powder and magnesium powder.
7. polymer composite according to claim 1, which is characterized in that the quality of isocyanates in the performed polymer
Content is 5~10%.
8. a kind of polymer composite bearing shell, including polymer composite described in any one of claim 1~7.
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