CN105461340B - A kind of pantograph band cooling function C/C composite carbon slippers and preparation method thereof - Google Patents

A kind of pantograph band cooling function C/C composite carbon slippers and preparation method thereof Download PDF

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CN105461340B
CN105461340B CN201510909259.2A CN201510909259A CN105461340B CN 105461340 B CN105461340 B CN 105461340B CN 201510909259 A CN201510909259 A CN 201510909259A CN 105461340 B CN105461340 B CN 105461340B
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composites
density
carbon
skeleton
cooling function
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CN105461340A (en
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肖鹏
方华婵
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Hangzhou leader new material Co., Ltd.
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Hangzhou Leader New Material Co Ltd
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
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    • B60—VEHICLES IN GENERAL
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Abstract

The present invention relates to a kind of pantograph band cooling function C/C composite carbon slippers and preparation method thereof, belong to use for electric locomotive Material Field.Band cooling function C/C composite carbon slippers designed by the present invention, it is made up of the cooling agent of skeleton and infiltration with surface in skeleton；The skeleton is C/C composites, and the fusion temperature of the cooling agent is 40 120 DEG C, the mass ratio of the cooling agent and skeleton is 6 15：85‑94.Its preparation method is：Using density as 1.60~1.7g/cm3C/C composites be raw material, after carrying out graphitization processing to the raw material, obtain skeleton, skeleton is dried after dipping cooling agent processing, and band cooling function C/C composite carbon slippers are obtained after weightening 5 13% on the basis of raw material.Preparation technology of the present invention is simple, composition design is reasonable, the function admirable of gained carbon slipper, is easy to large-scale commercial application.

Description

A kind of pantograph band cooling function C/C composite carbon slippers and preparation method thereof
Technical field
The present invention relates to a kind of pantograph band cooling function C/C composite carbon slippers and preparation method thereof, belong to electricity Power locomotive Material Field.
Background technology
The bullet train of electric propulsion is that the electric current on power network is transferred into locomotive electrical system by pantograph carbon slide, So as to supply high speed train motive, locomotive normal operation is maintained.
During train operation, changed by the electric current of carbon slipper with the change of the actual traction power of locomotive, the temperature of carbon slipper Degree also changes therewith.For locomotive from static to during accelerating to maximal rate, the actual traction power of locomotive is maximum, passes through carbon The electric current of slide plate is also maximum.By taking EMUs carbon slipper as an example, locomotive passes through carbon from static to during accelerating to 350km/h The electric current of slide plate may be up to 400A.In the case of instantaneous short circuit, 1000A is even as high as by the electric current of carbon slipper.High current When passing through carbon slipper, the temperature of carbon slipper can be caused to raise.Temperature is too high, and carbon slide bonding face may be caused to ftracture, cause carbon Carbon draw runner on slide plate comes off, and influences the service life of carbon slipper, or even spoils wire, serious threat traffic safety.
To ensure that electric locomotive is safe for operation, extend the service life of carbon slipper, carbon slipper allows for independently cooling. In presently disclosed carbon slipper patent, the relevant report with cooling function C/C composite carbon slippers is not directed to.
The content of the invention
The technical problems to be solved by the invention are when passing through high current for C/C composite carbon slippers, to cause slide plate Temperature raises, and easily causes slide plate cracking, influences traffic safety, there is provided a kind of pantograph band cooling function C/C composite material carbons Slide plate and preparation method thereof.
A kind of pantograph of present invention band cooling function C/C composite carbon slippers, by skeleton and infiltration in skeleton and The cooling agent composition on surface；The skeleton is C/C composites, and the fusion temperature of the cooling agent is 45-200 DEG C, is preferably 50-150 DEG C, more preferably 60-120 DEG C；The mass ratio of the cooling agent and skeleton is 6-15：85-94 is preferably 6-10： 90-94, more preferably 6-8：92-94.
A kind of pantograph of present invention band cooling function C/C composite carbon slippers；The cooling agent is selected from paraffin, sulphur One kind in sulphur, dodium thiosulfate.
A kind of pantograph of present invention band cooling function C/C composite carbon slippers；The density of the C/C composites is 1.6-1.7g/cm3, porosity 10-15%.I.e. the density of skeleton is 1.6-1.7g/cm3, porosity 10-15%.
A kind of pantograph of present invention band cooling function C/C composite carbon slippers, the band cooling function C/C composite woods The density for expecting carbon slipper is 1.05-1.2 times of C/C composite densities.With the close of cooling function C/C composite carbon slippers Degree is more preferably 1.7-1.9g/cm3。
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；Comprise the steps：
Using density as 1.60~1.7g/cm3, be preferably 1.65~1.7g/cm3C/C composites be raw material, to described After raw material carries out graphitization processing, skeleton is obtained, skeleton is dried after dipping cooling agent processing, until increasing on the basis of raw material Weight 5-13%, it is preferably weightening 6-9%；Obtain band cooling function C/C composite carbon slippers；The temperature of the graphitization processing For 1800~2600 DEG C, preferably 1800-2300 DEG C, more preferably 2000-2300 DEG C；The fusion temperature of the cooling agent For 45-200 DEG C, preferably 50-150 DEG C, more preferably 60-120 DEG C；Band cooling function C/C composite material carbons are obtained to slide In plate, the mass ratio of the cooling agent and skeleton is 6-15：85-94, it is preferably 6-10：90-94, more preferably 6-8： 92-94。
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；The cooling agent choosing One kind from paraffin, sulphur, dodium thiosulfate.Its it is more excellent formula be：Paraffin.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；When impregnating cooling agent, Controlling dipping temperature, pressure is 1~3MPa, preferably for 60-200 DEG C, preferably 60-100 DEG C, more preferably 60-80 DEG C For 1-2MPa, more preferably 1-1.2MPa, the single impregnation time is 1-5 hours, is preferably 1-3 hours, further preferably For 1-1.5 hours.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；The density is 1.60~1.7g/cm3C/C composites be to be prepared by following step：
Step 1
By 0 ° of individual layer without latitude charcoal cloth, after Carbon fibe net tire, 90 ° of individual layer circulate superposition successively without latitude charcoal cloth, Carbon fibe net tire, Use the method for relay-type acupuncture that density is being made as 0.3~0.6g/cm perpendicular to laying direction introducing Carbon fibe beam32.5D Carbon fibe acupuncture entirety felt；
Step 2
Carbon fibe acupuncture entirety felt it will be placed in after fixing in heating furnace obtained by step 1, under protective atmosphere, in 1500~ 2100 DEG C, preferably 1800-2100 DEG C, more preferably 1800-2000 DEG C, high-temperature heat treatment before progress；Obtain preceding high temperature Overall felt after heat treatment；
Step 3
Overall felt after high-temperature heat treatment before step 2 gained is subjected to chemical vapor deposition pyrolytic carbon processing, deposited Uniformly and density is 1.4~1.5g/cm3C/C composites；
Step 4
It is machined by the size of design draw runner, and resin dipping-charing process is carried out after reserved allowance, directly It is 1.60~1.7g/cm to density is obtained3High density C/C composites
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；It is described in step 2 The one kind of protective atmosphere in argon gas atmosphere, nitrogen atmosphere.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；It is described in step 2 During preceding high-temperature process, control time 3-10h.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；In step 2, preceding height During temperature processing, it is 0.101-0.11MPa to control furnace pressure.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；In step 3, chemistry Vapor deposition pyrolytic carbon processing conditional parameter be：
Carbon-source gas are selected from least one of propylene, natural gas, methane；
Diluent gas is selected from least one of nitrogen, hydrogen；
The volume ratio of carbon-source gas and diluent gas is 08.-1.2:2.8-3.2.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；In step 4, polymerization Polymer impregnated liquid used in thing dipping-charing process is resin solution.The preferably mixed solution of pitch and furane resins composition Or furane resins solution.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；In step 4, by setting The size of draw runner is counted, C/C composites obtained by step 3 are machined, and after reserved allowance, is placed in 40-80 DEG C, be preferably 50-70 DEG C, in more preferably 55-65 DEG C of polymer impregnated liquid, using by the way of impregnating by pressure at dipping After managing 1-3 hours, 180-210 DEG C of progress curing process 2.5-3.5 hour is warming up to；Carbonization treatment, carbon are carried out after the completion of solidification When changing processing, it is 830-880 DEG C to control temperature, and the time of single carbonization treatment is 40-60 hours；At dipping/solidification/carbonization The mode circulate operation of reason is until until it is 1.6~1.7g/cm to obtain density3High density C/C composites.
A kind of preparation method of the pantograph with cooling function C/C composite carbon slippers of the present invention；Obtain band cooling work( Can after C/C composite material carbon draw runners, by it with aluminium support, copper mesh pass through working process by conductive gluing knot, can use In the pantograph carbon slide in high ferro.
Principle and advantage
(1) present invention is prepared for having using chemical vapor deposition with the method for polymer impregnated-carbonization connects perforate Density is 1.60~1.7g/cm3Preferably 1.65~1.7g/cm3C/C composites, for dipping cooling agent provide passage.
(2) method for using pressure impregnation, ensure that cooling agent can be sufficiently impregnated in the hole of C/C composites.
(3) the low-melting characteristic of cooling agent is utilized, when the temperature of carbon slipper is higher than the fusion temperature of cooling agent, cooling agent Rapid heat absorption, takes away heat, so as to reduce the temperature of carbon slipper.
(4) present invention has been obtained the good band cooling function C/C of heat dispersion and answered by technique and the synergy of component Condensation material carbon slipper.
Brief description of the drawings
Fig. 1 is the process chart of pantograph provided in an embodiment of the present invention C/C draw runner preparation methods.
As can be seen from Figure 1 the invention mainly comprises preceding heat treatment, chemical vapor infiltration, it is polymer impregnated-charing, Five committed steps such as heat treatment, cooling agent dipping and machining afterwards.
Specific implementation
Comparative example 1：
Density is used as 0.35g/cm32.5D Carbon fibe acupuncture entirety felts be precast body, pass through chemical vapor infiltration work It is 1.48g/cm that skill, which is prepared for density,3C/C composites, by the dipping of resin three times-charring process, being prepared for density is 1.74g/cm3C/C composites, by 2300 DEG C of high-temperature heat treatments and machining obtain C/C draw runners.
C/C pantograph draw runners in this comparative example are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, the mass ratio for ensureing laminated cloth and net tire is 8:2, by 0 ° of laminated cloth of individual layer, net plies, 90 ° of laminated cloths, net plies successively Circulation superposition, then, uses the method for relay-type acupuncture that density is made as 0.35g/cm3Carbon fibe precast body.
(2) use the graphite frock designed by precast body under argon atmosphere, high-temperature heat treatment before carrying out 1600 DEG C, All times 8 hours, protective atmosphere are argon gas, and pressure is pressure-fired (i.e. only slight beyond the scale of pressure vacuum gauge 0)；
(3) natural gas is used as carbon-source gas, and hydrogen is carrier gas, and the volume ratio of natural gas and hydrogen is 1:3, using heat Graded chemical vapor infiltration method sinks to accumulating pyrolytic carbons to precast body at 950 DEG C, and after 100 hours, C/C composite densities are deposition 0.85g/cm3, using length direction center line as axle, C/C composites are rotated by 90 °, density, which is made, after redeposited 200 hours is 1.48g/cm3C/C composites.
(4) according to carbon draw runner size, every is left surplus 1mm, and the C/C composites of above-mentioned low-density are carried out into machinery adds Work.
(5) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation three times, extrudate density reaches 1.74g/cm3。
(6) product of acquisition is put into high temperature heat treatment furnace, at 2300 DEG C, whole process processing 6 hours, use argon gas for Protective gas.
(7) C/C composites are subjected to milling and grinding, obtain the C/C draw runners of final size.
(8) aluminium support, copper mesh and C/C draw runners are assembled by conductive gluing knot, are prepared for C/C composite carbon slippers, Specific performance is shown in Table 1.
Embodiment 1：
Density is used as 0.35g/cm3Fibre prickling entirety felt be precast body, prepared by chemical vapor infiltration technique Density is 1.48g/cm3C/C composites, by the dipping of resin twice-charring process, it is 1.65g/cm to be prepared for density3 C/C composites, obtain C/C draw runners by 2300 DEG C of high-temperature heat treatments and machining, then by 1 dipping paraffin and machine Processing, it is 1.73g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, the mass ratio for ensureing laminated cloth and net tire is 8:2, by 0 ° of laminated cloth of individual layer, net plies, 90 ° of laminated cloths, net plies successively Circulation superposition, then, uses the method for relay-type acupuncture that density is made as 0.35g/cm3Carbon fibe precast body.
(2) use the graphite frock designed by precast body under argon atmosphere, high-temperature heat treatment before carrying out 1600 DEG C, All times 8 hours, protective atmosphere are argon gas, and pressure is pressure-fired (i.e. only slight beyond the scale of pressure vacuum gauge 0)；
(3) natural gas is used as carbon-source gas, and hydrogen is carrier gas, and the volume ratio of natural gas and hydrogen is 1:3, using heat Graded chemical vapor infiltration method sinks to accumulating pyrolytic carbons to precast body at 950 DEG C, and after 100 hours, C/C composite densities are deposition 0.85g/cm3, using length direction center line as axle, C/C composites are rotated by 90 °, density, which is made, after redeposited 200 hours is 1.48g/cm3C/C composites.
(4) according to carbon draw runner size, every is left surplus 1mm, and the C/C composites of above-mentioned low-density are carried out into machinery adds Work.
(5) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation twice, extrudate density reaches 1.65g/cm3。
(6) product of acquisition is put into high temperature heat treatment furnace, at 2300 DEG C, whole process processing 6 hours, use argon gas for Protective gas.
(7) after C/C composites being carried out into milling and grinding, it is put into vacuum-pressure impregnating autoclave, using paraffin as dipping Agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 150 DEG C, impregnation pressure 2MPa, is protected It is 1.5 hours to press the time.It is cooled to room temperature and obtains C/C draw runners, the C/C draw runners of final size is obtained after Milling Machining.
(8) aluminium support, copper mesh and C/C draw runners are assembled by conductive gluing knot, are prepared for C/C composite carbon slippers, Specific performance is shown in Table 1.
As it can be seen from table 1 the carbon slipper (embodiment 1) of paraffin was impregnated compared with the carbon slipper for being not impregnated with paraffin (comparative example 1) is compared, and temperature reduces about 90 DEG C, and cooling-down effect is notable.
Embodiment 2：
Density is used as 0.55g/cm3Fibre prickling entirety felt be precast body, prepared by chemical vapor infiltration technique Density is 1.46g/cm3C/C composites, by 1 resin dipping-charring process, it is 1.6g/cm to be prepared for density3's C/C composites, C/C draw runners are obtained by 2300 DEG C of high-temperature heat treatments and machining, then added by 1 dipping sulphur and machine Work, it is 1.87g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, the mass ratio for ensureing laminated cloth and net tire is 8:2, by 0 ° of laminated cloth of individual layer, net plies, 90 ° of laminated cloths, net plies successively Circulation superposition, then, uses the method for relay-type acupuncture that density is made as 0.55g/cm3Carbon fibe precast body.
(2) use the graphite frock designed by precast body under argon atmosphere, high-temperature heat treatment before carrying out 1600 DEG C, All times 10 hours, protective atmosphere are argon gas, and pressure is pressure-fired (i.e. only slight beyond the scale of pressure vacuum gauge 0)；
(3) natural gas is used as carbon-source gas, and hydrogen is carrier gas, and the volume ratio of natural gas and hydrogen is 1:3, using heat Graded chemical vapor infiltration method sinks to accumulating pyrolytic carbons to precast body at 950 DEG C, and after 100 hours, C/C composite densities are deposition 0.95g/cm3, using length direction center line as axle, C/C composites are rotated by 90 °, density, which is made, after redeposited 150 hours is 1.46g/cm3C/C composites.
(4) according to carbon draw runner size, every is left surplus 1mm, and the C/C composites of above-mentioned low-density are carried out into machinery adds Work.
(5) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 55 DEG C, dipping pressure Power is 1MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 880 DEG C.After circulation twice, extrudate density reaches 1.60g/cm3。
(6) product of acquisition is put into high temperature heat treatment furnace, at 2300 DEG C, whole process processing 6 hours, use argon gas for Protective gas.
(7) after C/C composites being carried out into milling and grinding, it is put into vacuum-pressure impregnating autoclave, using sulphur as dipping Agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 150 DEG C, impregnation pressure 3MPa, is protected It is 5 hours to press the time.It is cooled to room temperature and obtains C/C draw runners, the C/C draw runners of final size is obtained after Milling Machining.
(8) aluminium support, copper mesh and C/C draw runners are assembled by conductive gluing knot, are prepared for C/C composite carbon slippers, Specific performance is shown in Table 1.
As it can be seen from table 1 the carbon slipper (embodiment 2) of sulphur was impregnated compared with the carbon slipper for being not impregnated with sulphur (comparative example 1) is compared, and temperature reduces 67 DEG C, and cooling-down effect is notable.
Embodiment 3：
Density is used as 0.35g/cm3Fibre prickling entirety felt be precast body, prepared by chemical vapor infiltration technique Density is 1.48g/cm3C/C composites, by the dipping of resin twice-charring process, it is 1.71g/cm to be prepared for density3 C/C composites, obtain C/C draw runners by 2300 DEG C of high-temperature heat treatments and machining, then by 1 dipping dodium thiosulfate and Machining, it is 1.86g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, the mass ratio for ensureing laminated cloth and net tire is 8:2, by 0 ° of laminated cloth of individual layer, net plies, 90 ° of laminated cloths, net plies successively Circulation superposition, then, uses the method for relay-type acupuncture that density is made as 0.55g/cm3Carbon fibe precast body.
(2) use the graphite frock designed by precast body under argon atmosphere, high-temperature heat treatment before carrying out 1600 DEG C, All times 10 hours, protective atmosphere are argon gas, and pressure is pressure-fired (i.e. only slight beyond the scale of pressure vacuum gauge 0)；
(3) natural gas is used as carbon-source gas, and hydrogen is carrier gas, and the volume ratio of natural gas and hydrogen is 1:3, using heat Graded chemical vapor infiltration method sinks to accumulating pyrolytic carbons to precast body at 950 DEG C, and after 100 hours, C/C composite densities are deposition 0.95g/cm3, using length direction center line as axle, C/C composites are rotated by 90 °, density, which is made, after redeposited 200 hours is 1.48g/cm3C/C composites.
(4) according to carbon draw runner size, every is left surplus 1mm, and the C/C composites of above-mentioned low-density are carried out into machinery adds Work.
(5) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 55 DEG C, dipping pressure Power is 1MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 880 DEG C.After circulation twice, extrudate density reaches 1.60g/cm3。
(6) product of acquisition is put into high temperature heat treatment furnace, at 2300 DEG C, whole process processing 6 hours, use argon gas for Protective gas.
(7) after C/C composites being carried out into milling and grinding, it is put into vacuum-pressure impregnating autoclave, using dodium thiosulfate as leaching Stain agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 55 DEG C, impregnation pressure 1MPa, Dwell time is 1.5 hours.It is cooled to room temperature and obtains C/C draw runners, the C/C draw runners of final size is obtained after Milling Machining.
(8) aluminium support, copper mesh and C/C draw runners are assembled by conductive gluing knot, are prepared for C/C composite carbon slippers, Specific performance is shown in Table 1.
As it can be seen from table 1 the carbon slipper (embodiment 3) for impregnating dodium thiosulfate and the carbon slipper phase for being not impregnated with dodium thiosulfate Compared than (comparative example 1), temperature reduces 74 DEG C, and cooling-down effect is notable.
The test result of the C/C composite carbon slippers of table 1
Example The temperature of logical 500A electric currents
Comparative example 1 232℃
Embodiment 1 143℃
Embodiment 2 165℃
Embodiment 3 158℃

Claims (6)

  1. A kind of 1. pantograph band cooling function C/C composite carbon slippers, it is characterised in that：By skeleton and infiltration in skeleton Formed with the cooling agent on surface；The skeleton is C/C composites, and the fusion temperature of the cooling agent is 45-120 DEG C；It is described The mass ratio of cooling agent and skeleton is 6-15：85-94；
    The cooling agent is paraffin；
    The density of the C/C composites is 1.6-1.7g/cm3, porosity 10-15%.
  2. A kind of 2. pantograph according to claim 1 band cooling function C/C composite carbon slippers；It is characterized in that： The density with cooling function C/C composite carbon slippers is 1.05-1.2 times of the density of C/C composites.
  3. A kind of 3. preparation method of pantograph with cooling function C/C composite carbon slippers；It is characterized in that including following steps Suddenly：
    Using density as 1.60 ~ 1.7 g/cm3C/C composites be raw material, to the raw material carry out graphitization processing after, obtain Skeleton, skeleton are dried after impregnating paraffin, obtain the band cooling function C/C composites of the weightening 5-13% on the basis of raw material Carbon slipper；The temperature of the graphitization processing is 1800 ~ 2600 DEG C；The fusion temperature of the paraffin is 45-120 DEG C；Obtain In band cooling function C/C composite carbon slippers, the mass ratio of the paraffin and skeleton is 6-15：85-94.
  4. A kind of 4. preparation method of the pantograph according to claim 3 with cooling function C/C composite carbon slippers；Its It is characterised by：When impregnating paraffin, it is 60-200 DEG C to control dipping temperature, pressure is 1 ~ 3MPa, dip time is 1-5 hours.
  5. A kind of 5. preparation method of the pantograph according to claim 3 with cooling function C/C composite carbon slippers；Its It is characterised by：The density is 1.60 ~ 1.7 g/cm3C/C composites be to be prepared by following step：
    Step 1
    By 0 ° of individual layer without latitude charcoal cloth, after Carbon fibe net tire, 90 ° of individual layer circulate superposition successively without latitude charcoal cloth, Carbon fibe net tire, use The method of relay-type acupuncture is 0.3 ~ 0.6g/cm introducing Carbon fibe beam density is made perpendicular to laying direction32.5D Carbon fibers Tie up acupuncture entirety felt；
    Step 2
    It is placed in after Carbon fibe acupuncture entirety felt obtained by step 1 is fixed in heating furnace, under protective atmosphere, in 1500 ~ 2100 DEG C, high-temperature heat treatment before progress；Overall felt before obtaining after high-temperature heat treatment；
    Step 3
    Overall felt after high-temperature heat treatment before step 2 gained is subjected to chemical vapor deposition pyrolytic carbon processing, obtains depositing homogeneous And density is 1.4 ~ 1.5g/cm3C/C composites；
    Step 4
    It is machined by the size of design draw runner, and resin dipping-carbonization treatment is carried out after reserved allowance, until It is 1.60 ~ 1.7 g/cm to density3High density C/C composites.
  6. A kind of 6. preparation method of the pantograph according to claim 5 with cooling function C/C composite carbon slippers；Its It is characterised by；In step 4：
    By the size of design draw runner, C/C composites obtained by step 3 are machined, and after reserved allowance, put In 40-80 DEG C of polymer impregnated liquid, after impregnation 1-3 hours by the way of impregnating by pressure, 180-210 DEG C is warming up to Carry out curing process 2.5-3.5 hours；Carry out carbonization treatment after the completion of solidification, during carbonization treatment, it is 830-880 to control temperature DEG C, the time of single carbonization treatment is 40-60 hours；The circulate operation in the way of dipping/solidification/carbonization treatment is until obtain close Spend for 1.6 ~ 1.7 g/cm3High density C/C composites；Polymer impregnated liquid used in polymer impregnated-charing process is tree Lipoprotein solution.
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