CN106146019B - A kind of preparation method of fibre reinforced pantograph carbon slide carbon item - Google Patents
A kind of preparation method of fibre reinforced pantograph carbon slide carbon item Download PDFInfo
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- CN106146019B CN106146019B CN201510188478.6A CN201510188478A CN106146019B CN 106146019 B CN106146019 B CN 106146019B CN 201510188478 A CN201510188478 A CN 201510188478A CN 106146019 B CN106146019 B CN 106146019B
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Abstract
The present invention provides a kind of preparation methods of fibre reinforced pantograph carbon slide carbon item, comprising: is uniformly mixed pantograph carbon slide carbon raw material and pore creating material, mixture is made；Compression process is carried out to the mixture, base at the beginning of the carbon slipper carbon item containing pore creating material is made；By carrying out calcination process to base at the beginning of the carbon slipper carbon item, the pore creating material in the first base of the carbon slipper carbon item is burnt up, equally distributed hole is formed in the carbon slipper carbon item, to obtain the carbon slipper carbon item with pore structure；Metal impregnation processing is carried out to the carbon slipper carbon item with pore structure, the carbon slipper carbon item with equally distributed metal is made.The present invention controls the number and shape of the hole inside carbon item by the way that pore creating material is added, and the reticular structure that the metal for being allowed to impregnate is evenly distributed, so that the resistivity of carbon item is low, conductive capability is strong, and intensity is high, long service life.
Description
Technical field
The present invention relates to a kind of preparation methods of fibre reinforced pantograph carbon slide carbon item, more particularly to one kind to have
The preparation method of the fibre reinforced pantograph carbon slide carbon item of the metal of even distribution, belongs to electric locomotive technical field.
Background technique
Electric locomotive is to obtain electric energy from contact net, the locomotive driven with traction electric machine.With the development of electric railway,
Electric locomotive has also obtained development at full speed, from direct current generator locomotive to AC transmission electric power locomotive.The big function of First in 1979
Rate AC drive locomotive is born in Germany, has attracted new era of the development of electric locomotive.It is higher in order to obtain big transport power
The power of speed, electric locomotive is increasing.Chinese first electrified circuit Baoji is built up to phoenix state line within 1961, electric power machine
The power of vehicle develops to 6400kw, 9600kw till now from 4740kw.China railways main line using 25kv, 50hz's
Contact net power supply mode.Power is the motor locomotive of 9600kw, and the efficiency of electric locomotive AC Drive motor is 80%-85%,
It needs to obtain 480A electric current from contact net, if considering further that certain overload capacity, the 1000A electric current that needs to obtain.
Electric locomotive is flowed by pantograph carbon slide from contact net, is transmitted to other on AC Drive motor and locomotive
Electrical equipment, then by grounding carbon brush, it is directed to the earth, to be formed into a loop.Pantograph carbon slide carbon item has superior resistance to
Mill property, and to the abrasion very little of contact net, there is preferable electric conductivity, to widely be used.But with locomotive function
The increase of rate, as previously mentioned, the electric current flowed is increasing, pure carbon slipper is no longer satisfied requirement, it would be desirable to be able to the bigger electricity of carrying
The material of current density, the carbon slipper for the impregnating metal that has thus been born.It is by the method for pure carbon carbon impregnating metal, to reduce it
Resistivity improves its current density for allowing to carry.
The carbon slipper of impregnating metal is that a large amount of holes present in carbon substrate are filled up metal, forms practical solidifying body,
Hole on previous carbon item is all self-assembling formation in carbon production process, these holes are dispersed in carbon item in dotted, thus
Cause the metal of dipping be also into it is dotted be dispersed in carbon item, can not achieve the effect that the resistivity of best reduction carbon item.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of fibre reinforced pantograph carbon slide carbon item
Preparation method, by controlling the number and shape of carbon internal void, the metal for being allowed to impregnate is uniformly distributed, can obtain lower
Resistivity, allow through bigger electric current.
To achieve the above object, the present invention provides a kind of preparation method of fibre reinforced pantograph carbon slide carbon item,
Include:
Pantograph carbon slide carbon raw material and pore creating material are uniformly mixed, mixture is made；
Compression process is carried out to the mixture, base at the beginning of the carbon slipper carbon item containing pore creating material is made；
By carrying out calcination process to base at the beginning of the carbon slipper carbon item, the pore-creating in the first base of the carbon slipper carbon item is burnt up
Agent forms equally distributed hole in the carbon slipper carbon item, to obtain the carbon slipper carbon item with pore structure；
Metal impregnation processing is carried out to the carbon slipper carbon item with pore structure, being made has equally distributed metal
Carbon slipper carbon item.
Wherein, the weight of the pantograph carbon slide carbon raw material and pore creating material are as follows: pantograph carbon slide carbon item
Raw material 68-182, pore creating material 1-30.
In particular, the pantograph carbon slide carbon raw material includes: carbon black, pitch coke, carbon fiber, graphite, sulphur, drip
It is green.
Especially, the weight of the carbon black, pitch coke, carbon fiber, graphite, sulphur, pitch are as follows: carbon black 5-35,
Pitch coke 30-60, carbon fiber 3-10, graphite 8-25, sulphur 2-12, pitch 20-40.
In particular, the carbon black, pitch coke, carbon fiber, graphite, sulphur, the weight of pitch and pore creating material are preferred
For carbon black 20-25, pitch coke 35-45, carbon fiber 4-7, graphite 10-20, sulphur 3-10, pitch 30-35, pore creating material 10-25.
Wherein, the carbon black is black powder, and granularity is 44-420 μm.
In particular, the granularity of the pitch coke is 26-350 μm.
Especially, the length of the carbon fiber be 0.5-5mm, carbon fiber light weight, intensity are big, hardness is high, use its as
The mechanical strength of raw material preparation is high, and flexural strength is big.
In particular, the granularity of the graphite is 26-150 μm.
Especially, the sulphur be pale yellow powder, 44-150 μm of granularity.
In particular, the pitch be dark brown thick liquid, 75 DEG C -90 DEG C of softening point temperature.
The flexural strength for being added to increase carbon item of carbon fiber, graphite, sulphur be added to increase carbon item
Self-lubrication, pitch play bonding effect.
Wherein, it is 0.05-0.5mm that the pore creating material, which is diameter, and length is the molecular compound or organic matter of 1-50mm.
In particular, the molecular compound is nylon and/or polypropylene.
Especially, the organic matter is the animal hairs such as bristles, horsehair, ox hair, one of cotton thread or a variety of.
The present invention artificially increases hole in carbon item by adding pore creating material, controls the number and shape of hole, is allowed to shape
At equally distributed pore network, net metal is formed for subsequent dipping and is laid a solid foundation.
Wherein, the obtained mixture includes:
Carbon black, pitch coke, carbon fiber, graphite, sulphur are uniformly mixed, the first mixture is obtained；
Pitch is added in first mixed material, is uniformly mixed, obtains the second mixture；
Roll processing is carried out to second mixture, obtains the third mixture of sheet；
Pulverization process is carried out to the sheet material, obtains the 4th mixture；
Pore creating material is added in the 4th mixture, is uniformly mixed, mixture is made.
In particular, the processing time for obtaining the first mixture is 30-200min.
Wherein, second mixture that obtains is by first mixed material heating to 130-210 DEG C, then by the drip of fusing
Blueness is added in first mixed material, is uniformly mixed.
Especially, the processing time for obtaining the second mixture is 30-200min.
Wherein, roll processing is carried out to second mixture, obtaining the third mixture includes:
The processing of first time roll is carried out to second mixture, obtains sheet material；
Pulverization process is carried out to the sheet material, obtains comminuting matter；
Second of roll processing is carried out to the comminuting matter, obtains the third mixture of sheet.
In particular, the treatment temperature of the roll processing is 100-180 DEG C.
Especially, the third mixture with a thickness of 1-3mm.
In particular, the granularity of the 4th mixture is 38-420 μm.
After secondary roll and pulverization process, material is mixed more uniform.
Wherein, described that pore creating material is added in the 4th mixture, obtained mixture includes:
Pore creating material is added in the 4th mixture, is uniformly mixed in a heated condition, is obtained thick
Mixture.
In particular, the treatment temperature of mixture is made as 80-180 in described pore creating material is added in the 4th mixture
℃。
Especially, the time of mixture is made as 30-100min in described pore creating material is added in the 4th mixture.
Wherein, the compression process includes:
Precompressed processing is carried out to the mixture, obtains precompressed carbon cylinder；
Hot-pressing processing is carried out to the precompressed carbon cylinder, carbon slipper carbon item just base is made.
In particular, the temperature of the precompressed processing is 50-100 DEG C, time 0.1-3s.
Especially, the pressure of the precompressed processing is 4-8MPa.
In particular, the temperature of the hot-pressing processing is 50-150 DEG C.
Especially, the pressure of the hot-pressing processing is 1-10MPa.
In particular, base at the beginning of the carbon slipper carbon item after the hot-pressing processing is cooled to room temperature, the cooling time is 2-4h.
Wherein, the temperature of the calcination process is 800-1300 DEG C, and the processing time is 150-400h.
Especially, base at the beginning of the carbon slipper carbon item is placed in roaster, is promoted to in-furnace temperature in 100-120h
800-1300 DEG C, and 50-300h is kept the temperature at this temperature.
After calcination process, the pore creating material in carbon slipper carbon item is decomposed at high temperature, forms with uniform pores
The carbon slipper carbon item of structure.
Wherein, the metal impregnation, which is handled, includes:
Copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are uniformly mixed, heating melting, metal impregnation is made
Liquid；
By the way that the carbon slipper carbon item with pore structure to be immersed in the metal impregnation liquid, make metal full of institute
The hole of the carbon slipper carbon item with pore structure is stated, the carbon slipper carbon item with equally distributed metal is made.
In particular, the proportion of the metal impregnation liquid are as follows: copper powder 90-98%, glass putty 0.5-3%, lead powder 0.5-4%, magnesium
Powder 0.2-1%, aluminium powder 0.5-1%, sodium powder 0.1-0.5%, silicon powder 0.1-1%.
Especially, described that metal leaching is carried out to the carbon slipper carbon item with pore structure using the metal impregnation liquid
Stain is handled
The carbon slipper carbon item with pore structure is dried into 1-3h at 200-400 DEG C first；
Then the carbon slipper carbon item with pore structure after drying is placed in sealing impregnating autoclave, impregnating autoclave is taken out true
Sky injects metal impregnation liquid into impregnating autoclave when vacuum degree reaches -0.1MPa, and vacuum impregnation handles 2-10min；Repressurization
To 50-100Mpa, 20-40min is impregnated；
It will finally be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having equal
The carbon slipper carbon item of the metal of even distribution.
Before impregnation, the heating of carbon slipper carbon item is conducive into the hole swell for making slide plate carbon item by high temperature, and make
Hole in rarefaction of air be more advantageous to molten metal under conditions of vacuum and pressurization and be impregnated into hole, formed uniformly point
The reticulated metal structures of cloth.
Advantages of the present invention and advantageous effects are as follows:
1, the preparation method of fibre reinforced pantograph carbon slide carbon item of the invention controls carbon item by the way that pore creating material is added
The number and shape of internal hole, the reticular structure that the metal for being allowed to impregnate is evenly distributed, so that the resistivity of carbon item is low,
Conductive capability is strong.
2, the preparation method of fibre reinforced pantograph carbon slide carbon item of the invention controls carbon item by the way that pore creating material is added
The number and shape of internal hole, the reticular structure that the metal for being allowed to impregnate is evenly distributed can more gather carbon material and gold
Belong to the respective advantage of material, so that the intensity of carbon item is higher, service life increases.
3, the fibre reinforced pantograph carbon slide carbon porosity height prepared using the method for the present invention, up to 10%-
38%；Resistivity is low, and conductive capability is strong, and resistivity≤5 μ Ω m, the pantograph carbon slide carbon item of less impregnating metal reduces
85.7-98.5%；And Rockwell hardness, flexural strength and impact flexibility are significantly increased, wear-resisting property is good；Coefficient of friction is low,
Greasy property is good.
4, the preparation method simple process of fibre reinforced pantograph carbon slide carbon item of the invention, does not need using special
Equipment, it is at low cost, be very suitable to large-scale industrial production.
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
Embodiment 1
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 30min, mixed
Uniformly, the first mixture is obtained；
(2) by the first mixed material heating to 130 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
200min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 100 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 100min at 80 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 4Mpa, and treatment temperature is 100 DEG C, and the time of precompressed is 3s；
(2) precompressed carbon slipper carbon item is preheated to 70 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, carbon is made
The first base of slide plate carbon item；Wherein, the pressure of the hot-pressing processing is 10Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 3h at room temperature, make carbon slipper just base it is cooling,
Be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 800 DEG C in 100h, and in this temperature
Lower heat preservation 50h obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 90%, glass putty 3%, lead powder 4%, magnesium powder 1%, aluminium powder 1%, sodium powder
0.5%, silicon powder 0.5%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1000 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 3h at 200 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 8min；Repressurization impregnates 40min to 50Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Embodiment 2
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 200min, mixed
It closes uniformly, obtains the first mixture；
(2) by the first mixed material heating to 210 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
30min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 180 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 30min at 180 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 8Mpa, and treatment temperature is 50 DEG C, and the time of precompressed is 1s；
(2) precompressed carbon slipper carbon item is preheated to 50 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, carbon is made
The first base of slide plate carbon item；Wherein, the pressure of the hot-pressing processing is 8Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 2h at room temperature, make carbon slipper just base it is cooling,
Be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 1000 DEG C in 110h, and is warm herein
Degree is lower to keep the temperature 300h, obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 98%, glass putty 0.5%, lead powder 0.5%, magnesium powder 0.2%, aluminium powder 0.4%,
Sodium powder 0.3%, silicon powder 0.1%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1050 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 1h at 400 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 2min；Repressurization impregnates 35min to 70Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Embodiment 3
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 60min, mixed
Uniformly, the first mixture is obtained；
(2) by the first mixed material heating to 145 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
90min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 110 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 45min at 160 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 5Mpa, and treatment temperature is 80 DEG C, and the time of precompressed is 0.1s；
(2) precompressed carbon slipper carbon item is preheated to 150 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, is made
The first base of carbon slipper carbon item；Wherein, the pressure of the hot-pressing processing is 1Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 4h at room temperature, make carbon slipper just base it is cooling,
Be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 1300 DEG C in 120h, and is warm herein
Degree is lower to keep the temperature 250h, obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 93%, glass putty 2%, lead powder 3%, magnesium powder 0.4%, aluminium powder 0.6%, sodium powder
0.4%, silicon powder 0.6%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1200 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 2.5h at 250 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 10min；Repressurization impregnates 30min to 80Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Embodiment 4
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 120min, mixed
It closes uniformly, obtains the first mixture；
(2) by the first mixed material heating to 160 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
150min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 130 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 80min at 100 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 6Mpa, and treatment temperature is 90 DEG C, and the time of precompressed is 1.5s；
(2) precompressed carbon slipper carbon item is preheated to 90 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, carbon is made
The first base of slide plate carbon item；Wherein, the pressure of the hot-pressing processing is 4Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 2.5h at room temperature, making carbon slipper, just base is cold
But, be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 900 DEG C in 105h, and in this temperature
Lower heat preservation 200h obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 94%, glass putty 2.5%, lead powder 2%, magnesium powder 0.6%, aluminium powder 0.5%, sodium
Powder 0.1%, silicon powder 0.3%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1100 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 2h at 300 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 4min；Repressurization impregnates 38min to 60Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Embodiment 5
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 150min, mixed
It closes uniformly, obtains the first mixture；
(2) by the first mixed material heating to 175 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
120min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 150 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 60min at 120 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 7Mpa, and treatment temperature is 60 DEG C, and the time of precompressed is 2s；
(2) precompressed carbon slipper carbon item is preheated to 110 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, is made
The first base of carbon slipper carbon item；Wherein, the pressure of the hot-pressing processing is 6Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 3.5h at room temperature, making carbon slipper, just base is cold
But, be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 1200 DEG C in 115h, and is warm herein
Degree is lower to keep the temperature 150h, obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 95%, glass putty 1.5%, lead powder 1%, magnesium powder 0.5%, aluminium powder 0.8%, sodium
Powder 0.2%, silicon powder 1%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1150 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 1.5h at 350 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 6min；Repressurization impregnates 25min to 90Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Embodiment 6
1, prepare raw material according to following weight
2, raw material mixes
(1) carbon black, pitch coke, carbon fiber, graphite, sulphur are added in blender and are stirred 90min, mixed
Uniformly, the first mixture is obtained；
(2) by the first mixed material heating to 190 DEG C, then the pitch of fusing is added in the first mixed material, at stirring
60min is managed, is uniformly mixed, obtains the second mixture；
(3) the second mixture is placed in progress first time roll processing in roller mill, obtains sheet material；By sheet material
It is placed in pulverizer and carries out pulverization process, obtain comminuting matter；Comminuting matter is placed in roller mill and is carried out at second of roll
Reason, obtains the sheet third mixture with a thickness of 1-3mm；Wherein the treatment temperature of roller mill is 160 DEG C；
(4) third mixture is placed in pulverizer and carries out pulverization process, obtain the 4th mixing that granularity is 38-420 μm
Material；
(5) pore creating material is added in the 4th mixture, is stirred 70min at 140 DEG C, obtain thick mixing
Material.
3, compression process
(1) thick mixture is added to progress precompressed processing in vertical hydraulic press, obtains precompressed carbon cylinder；Its
In, the pressure of precompressed is 5.5Mpa, and treatment temperature is 70 DEG C, and the time of precompressed is 2.5s；
(2) precompressed carbon slipper carbon item is preheated to 130 DEG C, is subsequently placed in horizontal hydraulic machine and carries out hot-pressing processing, is made
The first base of carbon slipper carbon item；Wherein, the pressure of the hot-pressing processing is 2Mpa；
8) base at the beginning of the carbon slipper carbon item after hot-pressing processing is taken out, places 3h at room temperature, make carbon slipper just base it is cooling,
Be formed
4, calcination process
Base at the beginning of carbon slipper carbon item is placed in roaster, in-furnace temperature is promoted to 1100 DEG C in 112h, and is warm herein
Degree is lower to keep the temperature 100h, obtains the carbon slipper carbon item with pore structure.
5, impregnation
(1) it stocks up according to the following ratio: copper powder 96%, glass putty 1%, lead powder 1.5%, magnesium powder 0.8%, aluminium powder 0.4%, sodium
Powder 0.15%, silicon powder 0.15%；
(2) copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are poured into crucible after mixing and is heated to
1120 DEG C, make metal molten, obtains metal impregnation liquid；
(3) the carbon slipper carbon item with pore structure is put into baking oven, dries 1.2h at 380 DEG C；
(4) the carbon slipper carbon item after drying is placed in sealing impregnating autoclave, impregnating autoclave is vacuumized, when vacuum degree reaches-
When 0.1MPa, metal impregnation liquid is injected into impregnating autoclave, vacuum impregnation handles 7min；Repressurization impregnates 20min to 100Mpa；
(5) it will be taken out from impregnating autoclave impregnated of the carbon slipper carbon item of metal, be placed in cooling in nitrogen, obtain having uniform
The carbon slipper carbon item of the metal of distribution.
6, performance test
It is tested for the property respectively to the carbon slipper carbon item of metal impregnation before and after the processing is carried out, test result is shown in Table 1 and table
2。
Properties of product testing result before 1 impregnating metal of table
Properties of product testing result after 2 impregnating metal of table
The preparation method that can be seen that fibre reinforced pantograph carbon slide carbon item of the present invention from Tables 1 and 2 data passes through
The number and shape of the hole inside pore creating material control carbon item are added, pore-creating effect is good, and porosity reaches 10%-38%；By
After metal impregnation processing, due to containing equally distributed metal structure, the less carbon slipper of impregnating metal in carbon slipper carbon item
Carbon item is compared, and the resistivity of carbon item substantially reduces, resistivity≤5 μ Ω m, reduces 85.7-98.5%, and bulk density increases, Lip river
The enhancing of family name's hardness, flexural strength improves and impact flexibility is significantly improved.
Claims (3)
1. a kind of preparation method of fibre reinforced pantograph carbon slide carbon item characterized by comprising
Pantograph carbon slide carbon raw material and pore creating material are uniformly mixed, mixture is made；
Compression process is carried out to the mixture, base at the beginning of the carbon slipper carbon item containing pore creating material is made；
By burning up the pore creating material in the first base of the carbon slipper carbon item to base progress calcination process at the beginning of the carbon slipper carbon item,
Equally distributed hole is formed in the carbon slipper carbon item, to obtain the carbon slipper carbon item with pore structure；
Metal impregnation processing is carried out to the carbon slipper carbon item with pore structure, is made with equally distributed metal
Carbon slipper carbon item；
Wherein, the weight of the pantograph carbon slide carbon raw material and pore creating material are as follows: pantograph carbon slide carbon raw material
68-182, pore creating material 1-30；
Wherein, the pantograph carbon slide carbon raw material includes: carbon black, pitch coke, carbon fiber, graphite, sulphur, pitch, heavy
Measure part proportion are as follows: carbon black 5-35, pitch coke 30-60, carbon fiber 3-10, graphite 8-25, sulphur 2-12, pitch 20-40；
Wherein, it is 0.05-0.5mm that the pore creating material, which is diameter, and length is the organic matter of 1-50mm；
Wherein, the organic matter is the animal hair of bristles, horsehair, ox hair, one of cotton thread or a variety of；
Wherein, the temperature of the calcination process is 800-1300 DEG C, and the processing time is 150-400h；
Wherein, the proportion of the metal impregnation liquid are as follows: copper powder 90-98%, glass putty 0.5-3%, lead powder 0.5-4%, magnesium powder 0.2-
1%, aluminium powder 0.5-1%, sodium powder 0.1-0.5%, silicon powder 0.1-1%.
2. preparation method described in claim 1, which is characterized in that the obtained mixture includes:
Carbon black, pitch coke, carbon fiber, graphite, sulphur are uniformly mixed, the first mixture is obtained；
The pitch of fusing is added in first mixed material, is uniformly mixed, obtains the second mixture；
Roll processing is carried out to second mixture, obtains the third mixture of sheet；
Pulverization process is carried out to the sheet material, obtains the 4th mixture；
Pore creating material is added in the 4th mixture, is uniformly mixed, mixture is made.
3. preparation method as described in claim 1, which is characterized in that the metal impregnation, which is handled, includes:
Copper powder, glass putty, lead powder, magnesium powder, aluminium powder, sodium powder and silicon powder are uniformly mixed, heating melting, metal impregnation liquid is made；
By the way that the carbon slipper carbon item with pore structure to be immersed in the metal impregnation liquid, make metal full of described
The carbon slipper carbon item with equally distributed metal is made in the hole of carbon slipper carbon item with pore structure.
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| CN109867523B (en) * | 2017-12-04 | 2021-09-03 | 比亚迪股份有限公司 | Preparation method of high-density carbon sliding plate and high-density carbon sliding plate |
| CN108484195B (en) * | 2018-03-01 | 2020-06-16 | 大同新成新材料股份有限公司 | Preparation method of pantograph carbon slide plate |
| CN108556633B (en) * | 2018-03-21 | 2019-10-01 | 大同新成新材料股份有限公司 | A kind of preparation method of railcar optical fiber early warning pantograph carbon slide |
| CN108585915B (en) * | 2018-06-06 | 2020-10-30 | 大同新成新材料股份有限公司 | Preparation method of low-resistance pantograph slide plate carbon strip |
| CN110156482B (en) * | 2019-05-28 | 2020-12-29 | 西南交通大学 | Copper-impregnated carbon sliding plate material and preparation method of copper-impregnated carbon sliding plate |
| CN116535227B (en) * | 2023-07-05 | 2023-10-10 | 西南交通大学 | Preparation method of carbon fiber in-situ generation nano silver enhanced pantograph carbon slide plate |
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