CN108585913A - A kind of use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan - Google Patents

A kind of use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan Download PDF

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CN108585913A
CN108585913A CN201810209881.6A CN201810209881A CN108585913A CN 108585913 A CN108585913 A CN 108585913A CN 201810209881 A CN201810209881 A CN 201810209881A CN 108585913 A CN108585913 A CN 108585913A
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charcoal
graphene
carbon
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pantograph pan
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CN108585913B (en
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邵海成
刘桂武
乔冠军
张相召
赵立军
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Inner Mongolia pate New Material Technology Co.,Ltd.
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Jiangsu University
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
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    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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Abstract

The invention belongs to transportation and communication accessory technical fields, are related to a kind of preparation method of use for electric locomotive graphene modification charcoal/charcoal pantograph pan.The present invention has the characteristics that high strength ＆ high electric-conduction and high thermal conductivity using graphene, functional modification is carried out to carbon/carbon composite using graphene, graphene is passed through after organic solvent and resin mixed diluting, pressurization is immersed in the porous carbon/carbon composite green body after chemical vapor deposition process, then carbon/carbon composite pantograph pan is modified using graphene made from solidification, charing and graphitization technique, its bending strength >=270MPa, shear strength >=120MPa, impact flexibility >=2.7J/cm2, the μ Ω .m of resistivity≤11.5, wear rate≤11.0mm/10000km has excellent in mechanical performance, the advantage that high mechanical strength, toughness are good, resistivity is low, self-lubricating property is good and anti-friction wear resistance is strong.

Description

A kind of use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan
Technical field
The invention belongs to transportation and communication accessory technical fields, and in particular to a kind of use for electric locomotive graphene modification The preparation method of charcoal/charcoal pantograph pan.
Background technology
Pantograph pan is the critical component that electric locomotive obtains electric energy from contact net for power supplying, is mounted on the most upper of pantograph Portion is directly in contact with contact line conducting wire.Pantograph pan works in the natural environment, and in operation with contact line conducting wire Constantly generate friction and impact.The relationship of pantograph pan and contact line conducting wire constitutes a pair of of machinery and rubs with the special of electrical couplings Pair is wiped, therefore there are strict requirements to the comprehensive performance of the selection of material.
As electric locomotive inputing power from contact net critical component, that is, pantograph pan technology of preparing improvement With the improvement of performance etc. still without being well solved, the pantograph pan that the country uses relies on import mostly, is badly in need of Develop electrical contact sliding material meeting actual use operating mode, haveing excellent performance.
Slide plate is broadly divided into Metal Substrate slide plate and charcoal system slide plate two major classes by material, and Metal Substrate slide plate includes simple metal slide plate And powder shaped charge liner；Charcoal system slide plate includes pure carbon slides and metallic cementation carbon slide plate.Wherein, simple metal slide plate with contact due to leading Wire rod matter is close, and affinity is strong, extremely serious to contact lead abrasion, has eliminated at present.Powder shaped charge liner be divided into iron-based and Copper-based two kinds.Iron-based is suitable for steel-core aluminium contact wire, copper-based to be suitable for copper contact wire.Powder shaped charge liner high mechanical strength, Shock resistance is preferable, and resistivity is low, there is certain self lubricity, itself wearability is good, and service life is longer, general reachable Ten thousand kilometers of 3.5-7, is widely adopted at present.But since the base material of powder shaped charge liner is still metallic object, with contact wire material Matter is similar, and powder shaped charge liner is still extremely serious to contact lead abrasion.The great advantage of pure carbon slides is that self-lubricating property is excellent It is good, it is small to contact wire wear.Electromagnetic noise is small when carbon slide plate slides, and high temperature resistant, and are-tight property is strong, is not easy to send out with contact wire Raw weldering phenomenon.But carbon slide plate mechanical strength is low, poor impact resistance, and conducting wire hard spot frangibility and broken, charcoal are encountered in operation Slide plate intrinsic resistance is big, and Contact Temperature is high, it is possible to cause conducting wire to cross thermal oxide, accelerate lead abrasion.Soak metal carbon slide plate tool Have the characteristics that pure carbon slides property small to lead abrasion and are-tight is strong, while electric conductivity and mechanical strength ratio pure carbon slides are carried It is high.But the mechanical strength of metal carbon slide plate is soaked, especially impact strength needs to be further increased.
According to data-searching, Chinese invention patent CN1178745A discloses a kind of carbon-carbon composites pantograph pan, Electric locomotive pantograph sliding plate is manufactured using carbon fiber reinforced carbon based composites, using copper facing carbon dust as basis material, use is short Raw material is mixed as bonding agent as reinforcing agent, thermosetting resin and carries out cold pressing and hot pressing, thermosetting resin is made to cure by fiber Molding, this Material for Pantograph Slide friction and wear behavior is good, but mechanical strength is not high.Chinese invention patent CN 101049803A uses the quasi- three-dimensional structure precast body of needled non-woven cloth, passes through chemical vapor deposition pyrolytic charcoal, resin dipping-charing Repeatedly densified for several times, density >=1.70g/cm of system3Materials for Electric Locomotive Pantograph Slide Plate, although this slide plate density It is small, light weight, high mechanical strength, but resistivity is larger, self-lubricating capacities are not strong, worn to conducting wire more serious.It is Chinese special 105152674 A of sharp CN carry out being mixed to get graphene-chopped carbon fiber suspension using graphene and chopped carbon fiber；It will Is placed in 0 DEG C or less freezing in the graphene of predrainage-chopped carbon fiber suspension injection graphite jig, it is freeze-dried and through pressing Power is molded to obtain graphene-chopped carbon fiber reinforcement；The graphene of preparation-chopped carbon fiber enhancing is subjected to chemical vapor deposition Product pyrolytic carbon setting, then carry out multiple coal tar pitch dipping-charing, finally carry out graphitization processing obtain graphene Modified Activated Carbon/ Carbon composite, used short-fibred mechanical intensity is not high.Chinese patent CN 101830723A use the resin of high carbon residue B catalyst and dispersant are added in solution, then is impregnated in carbon fiber braid, pass through later cure under pressure processing and Normal pressure charing process, finally carry out high temperature graphitization processing, although pantograph pan obtained have good frictional behaviour and Electric conductivity, but pure resin densification carbon fiber braid is used, by high-temperature process since resin shrinkage will appear large number of orifices Gap makes slide plate integral strength decline, in addition, resin carbon is hard charcoal, it is larger to the wear extent of conducting wire, it is unfavorable for protecting conducting wire.In Needle-punched carbon fiber entirety felt pickling is removed the colloid on its surface and is dried in vacuo by 105235529 A of state patent CN；It will place Needle-punched carbon fiber entirety felt after reason is soaked into certain density graphene solution, is drained, is dried after taking-up；Needle is pierced into Carbon fiber Whole felt-graphene the precast body of dimension is soaked into certain density cupric ammine complex solution；The needle-punched carbon fiber for introducing copper is whole Body felt-graphene precast body is put into deposition pyrolytic carbon in chemical vapor deposition stove and obtains the carbon/carbon composite of low-density, then Cycle dipping-the charing for carrying out medium temperature coal pitch obtains the carbon/carbon composite that highdensity graphene-copper is modified；It will be made Composite material by figure processing obtain the pantograph pan of high-quality, used short-fibred mechanical intensity is not high, performance side There is certain limitation in face.
Invention content
The purpose of the present invention is in view of the deficiencies of the prior art, and provide it is a kind of it is simple for process, densification effects are good, mechanical strong Degree is high, conduct electricity very well, anti-friction is worn and the use for electric locomotive graphene for having the performance of self-lubricating capacities excellent changes The preparation method of property charcoal/charcoal pantograph pan.
To achieve the goals above, the technical solution adopted in the present invention is：A kind of use for electric locomotive graphene Modified Activated Carbon/ The preparation method of charcoal pantograph pan, it is characterised in that this approach includes the following steps：
Step 1：Using oxidization fiber felt needle nematophore as preform material, precast body density domination is in 0.12g/cm3- 0.30g/cm3。
Step 2：The precast body used in step 1 is subjected to charing process.
Step 3：By treated in step 2, precast body carries out chemical vapor deposition densification, as density >=1.15g/cm3 When be transferred to compact process of lower road.
Step 4：Graphene is subjected to mixed diluting, graphene content control by a certain percentage by organic solvent and resin System stirs evenly in 0.5-2.5wt.%, obtains dip compound.
Step 5：Dipping, curing and carbonization treatment：Dip compound pressurization in step 4 is immersed porous by chemistry In vapor deposition treated carbon/carbon composite green body, pressure is to carry out dipping 2h-10h under 1.0MPa-6.0MPa, then Curing process is carried out, turns retort charing process after coming out of the stove, carbonization temperature is 800 DEG C -1050 DEG C, keeps the temperature 2h-5h, counts repeatedly It is secondary, until density >=1.65g/cm3When be transferred to compact process of lower road.
Step 6：Turn the carbon/carbon composite green body after step 5 densification to carry out pyrographite in high temperature graphitization stove Change is handled, and 1600 DEG C -2500 DEG C are warming up under conditions of heating rate is 5 DEG C/h-200 DEG C/h, is then kept the temperature 2h-4h and is carried out High temperature graphitization processing, natural cooling.
Step 7：By step 6 high temperature graphitization treated carbon/carbon composite green body carries out an again graphene, tree Lipoprotein mixture dipping, curing and carbonization treatment, the same step 5 for the treatment of process.
Step 8：Use for electric locomotive stone is made after over mechanical processing in the carbon/carbon composite green body that step 7 is come out of the stove Black alkene is modified charcoal/charcoal pantograph pan.
A kind of above-mentioned use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, described in step 1 Oxidization fiber felt needle nematophore cloth pin density be 20 needles/cm2- 80 needles/cm2。
A kind of above-mentioned use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, described in step 2 Oxidization fiber felt charing process temperature be 550 DEG C -700 DEG C, heating rate be 2 DEG C/h-20 DEG C/h, soaking time 1h-8h.
A kind of above-mentioned use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, described in step 3 Chemical vapor deposition densification technique, heating rate is 5 DEG C/h-100 DEG C/h, and depositing temperature is 800 DEG C -1050 DEG C, when deposition Between be 50h-300h；Using methane and propane mixture as carbon-source gas, the mixed volume ratio of methane and propane is 1： 0.5-6, gas flow 0.5m3/h-6.0m3/h。
A kind of above-mentioned use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, described in step 4 Resin include phenolic resin, epoxy resin and furfural acetone resin, organic solvent includes N-Methyl pyrrolidone, dodecyl sodium sulfonate Object is mixed by any ratio in sodium or the two.
A kind of above-mentioned use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, step 5 and step Solidification temperature described in seven is 120 DEG C -200 DEG C, and charing heating rate is 5 DEG C/h-80 DEG C/h.
Compared with the prior art, the present invention has the following advantages：
1, compared with the technology of preparing of conventional electric power pantograph pan of locomotive, the present invention using graphene have high intensity, The characteristics of high conductivity and high thermal conductivity, carries out functional modification, by graphene using graphene to carbon/carbon composite After organic solvent and resin mixed diluting, it is compound that porous charcoal/charcoal after chemical vapor deposition process is immersed in pressurization In body of material, carbon/carbon composite pantograph is then modified using graphene made from solidification, charing and graphitization technique and is slided Plate, bending strength >=270MPa, shear strength >=120MPa, impact flexibility >=2.7J/cm2, the μ Ω .m of resistivity≤11.5, Wear rate≤11.0mm/10000km has excellent in mechanical performance, and high mechanical strength, toughness are good, resistivity is low, moisten certainly The advantages that slip can be got well and anti-friction wear resistance is strong.
2, the present invention is using the compact technology that graphene is mixed with dipping to solidification/charing added with solvent and resin, with biography System graphene modification technology compare, technical process is simple, and graphene being evenly distributed in slide plate, be added graphene can more into The resistivity of the reduction slide plate of one step simultaneously improves its self-lubricating property.
3, the use for electric locomotive graphene made from the technology is modified charcoal/charcoal pantograph pan to contact wire wear Measure it is small, can achieve the purpose that protect contact wire.
Description of the drawings
Fig. 1 is the process flow diagram that the present invention prepares that use for electric locomotive graphene is modified charcoal/charcoal pantograph pan.
Specific implementation mode
Embodiment 1
Step 1：Using oxidization fiber felt needle nematophore as preform material, precast body density domination is in 0.12g/cm3, in advance Oxygen silk felt needle nematophore cloth pin density is 20 needles/cm2。
Step 2：The precast body used in step 1 is subjected to charing process, charing process temperature is 550 DEG C, heating speed Rate is 2 DEG C/h, soaking time 1h.
Step 3：By treated in step 2, precast body carries out chemical vapor deposition densification, mixed using methane and propane It closes gas and is used as carbon-source gas, the mixed volume ratio of methane and propane is 1：0.5, gas flow 0.5m3/ h, heating rate For 5 DEG C/h, depositing temperature is 800 DEG C, sedimentation time 300h.As density >=1.15g/cm3When be transferred to compact process of lower road.
Step 4：By graphene by organic solvent with after resin mixed diluting, pressurization is immersed porous by chemical gas In carbon/carbon composite green body after phase deposition processes, graphene content is controlled in 0.5wt.%, is stirred evenly, and surplus is tree Lipoprotein solution, resin are phenolic resin, and organic solvent is N-Methyl pyrrolidone.
Step 5：Carbon/carbon composite green body in step 4 is subjected to curing and carbonization treatment, in the case where pressure is 1.0MPa After carrying out dipping 2h, curing process is carried out, solidification temperature is 120 DEG C, and solidification turns retort charing process, carbonization temperature after coming out of the stove It it is 800 DEG C, charing heating rate is 5 DEG C/h, keeps the temperature 2h, is repeated several times, until density >=1.65g/cm3When be transferred to lower road densification work Sequence.
Step 6：Turn the carbon/carbon composite green body after step 5 densification to carry out pyrographite in high temperature graphitization stove Change is handled, and 1600 DEG C are warming up under conditions of heating rate is 5 DEG C/h, is then kept the temperature 2h and is carried out high temperature graphitization processing, from It is so cooling.
Step 7：By step 6 high temperature graphitization, treated that carbon/carbon composite green body carries out graphene, resin again Impregnation mixture solidification/charing process carries out curing process, solidification temperature is after carrying out dipping 2h under pressure is 1.0MPa 120 DEG C, solidification turns retort charing process after coming out of the stove, and carbonization temperature is 800 DEG C, and charing heating rate is 5 DEG C/h, keeps the temperature 2h.
Step 8：The carbon/carbon composite green body that step 7 is come out of the stove is after over mechanical processing, the use for electric locomotive stone of system Black alkene is modified charcoal/charcoal pantograph pan.
Graphene obtained is modified carbon/carbon composite pantograph pan, bending strength 270MPa, shear strength 120MPa, impact flexibility 2.7J/cm2, resistivity 11.5 μ Ω .m, wear rate 11.0mm/10000km.
Embodiment 2
Step 1：Using oxidization fiber felt needle nematophore as preform material, precast body density domination is in 0.18g/cm3, in advance Oxygen silk felt needle nematophore cloth pin density is 40 needles/cm2。
Step 2：The precast body used in step 1 is subjected to charing process, charing process temperature is 650 DEG C, heating speed Rate is 10 DEG C/h, soaking time 2h.
Step 3：By treated in step 2, precast body carries out chemical vapor deposition densification, mixed using methane and propane It closes gas and is used as carbon-source gas, the mixed volume ratio of methane and propane is 1：3, gas flow 2.5m3/ h, heating rate are 50 DEG C/h, depositing temperature is 900 DEG C, sedimentation time 150h.As density >=1.15g/cm3When be transferred to compact process of lower road.
Step 4：By graphene by organic solvent with after resin mixed diluting, pressurization is immersed porous by chemical gas In carbon/carbon composite green body after phase deposition processes, graphene content is controlled in 1.0wt.%, and surplus is resin solution, is stirred It mixes uniformly, resin is epoxy resin, and organic solvent is dodecyl sodium sulfate.
Step 5：Carbon/carbon composite green body in step 4 is subjected to curing and carbonization treatment, in the case where pressure is 2.5MPa After carrying out dipping 6h, curing process is carried out, solidification temperature is 170 DEG C, and solidification turns retort charing process, carbonization temperature after coming out of the stove It it is 900 DEG C, charing heating rate is 60 DEG C/h, keeps the temperature 3h, is repeated several times, until density >=1.65g/cm3When to be transferred to lower road fine and close Process.
Step 6：Turn the carbon/carbon composite green body after step 5 densification to carry out pyrographite in high temperature graphitization stove Change is handled, and 2000 DEG C are warming up under conditions of heating rate is 100 DEG C/h, is then kept the temperature 4h and is carried out high temperature graphitization processing, Natural cooling.
Step 7：By step 6 high temperature graphitization treated carbon/carbon composite green body carries out an again graphene, tree Lipoprotein mixture impregnates solidification/charing process, after carrying out dipping 6h under pressure is 2.5MPa, carries out curing process, solidification temperature It it is 170 DEG C, solidification turns retort charing process after coming out of the stove, carbonization temperature is 900 DEG C, and charing heating rate is 60 DEG C/h, heat preservation 3h。
Step 8：The carbon/carbon composite green body that step 7 is come out of the stove is after over mechanical processing, the use for electric locomotive stone of system Black alkene is modified charcoal/charcoal pantograph pan.
Graphene obtained is modified carbon/carbon composite pantograph pan, bending strength 280MPa, shear strength 125MPa, impact flexibility 2.75J/cm2, resistivity 11.0 μ Ω .m, wear rate 10.5mm/10000km.
Embodiment 3
Step 1：Using oxidization fiber felt needle nematophore as preform material, precast body density domination is in 0.30g/cm3, in advance Oxygen silk felt needle nematophore cloth pin density is 80 needles/cm2。
Step 2：The precast body used in step 1 is subjected to charing process, charing process temperature is 700 DEG C, heating speed Rate is 20 DEG C/h, soaking time 8h.
Step 3：By treated in step 2, precast body carries out chemical vapor deposition densification, mixed using methane and propane It closes gas and is used as carbon-source gas, the mixed volume ratio of methane and propane is 1：6, gas flow 6.0m3/ h, heating rate are 100 DEG C/h, depositing temperature is 1050 DEG C, sedimentation time 300h.As density >=1.15g/cm3When be transferred to compact process of lower road.
Step 4：By graphene by organic solvent with after resin mixed diluting, pressurization is immersed porous by chemical gas In carbon/carbon composite green body after phase deposition processes, graphene content is controlled in 2.5wt.%, is stirred evenly, and surplus is tree Lipoprotein solution, resin are furfural acetone resin, and organic solvent is N-Methyl pyrrolidone and dodecyl sodium sulfate mixture.
Step 5：Carbon/carbon composite green body in step 4 is subjected to curing and carbonization treatment, in the case where pressure is 6.0MPa After carrying out dipping 10h, curing process is carried out, solidification temperature is 200 DEG C, and solidification turns retort charing process, charing temperature after coming out of the stove Degree is 1050 DEG C, and charing heating rate is 80 DEG C/h, keeps the temperature 5h, is repeated several times, until density >=1.65g/cm3When be transferred to lower road and cause Close process.
Step 6：Turn the carbon/carbon composite green body after step 5 densification to carry out pyrographite in high temperature graphitization stove Change is handled, and 2500 DEG C are warming up under conditions of heating rate is 200 DEG C/h, is then kept the temperature 3h and is carried out high temperature graphitization processing, Natural cooling.
Step 7：By step 6 high temperature graphitization, treated that carbon/carbon composite green body carries out graphene, resin again Impregnation mixture solidification/charing process carries out curing process, solidification temperature is after carrying out dipping 10h under pressure is 6.0MPa 200 DEG C, solidification turns retort charing process after coming out of the stove, and carbonization temperature is 1050 DEG C, and charing heating rate is 80 DEG C/h, heat preservation 5h。
Step 8：The product that step 7 is come out of the stove is after over mechanical processing, use for electric locomotive graphene Modified Activated Carbon/charcoal of system Pantograph pan.
Graphene obtained is modified carbon/carbon composite pantograph pan, bending strength 285MPa, shear strength 130MPa, impact flexibility 2.85J/cm2, resistivity 10.0 μ Ω .m, wear rate 10.3mm/10000km.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention Technical spirit still falls within skill of the present invention to any simple modification, change and equivalent structure transformation made by above example In the protection domain of art scheme.

Claims (6)

1. a kind of use for electric locomotive graphene is modified the preparation method of charcoal/charcoal pantograph pan, which is characterized in that specific steps are such as Under：
Step 1：Using oxidization fiber felt needle nematophore as preform material, precast body density domination is in 0.12g/cm3-0.30g/ cm3；
Step 2：The precast body used in step 1 is subjected to charing process；
Step 3：By treated in step 2, precast body carries out chemical vapor deposition densification, as density >=1.15g/cm3When turn Enter compact process of lower road；
Step 4：Graphene is subjected to mixed diluting by a certain percentage by organic solvent and resin, the control of graphene content exists 0.5-2.5wt.% is stirred evenly, and obtains dip compound；
Step 5：Dipping, curing and carbonization treatment：Dip compound pressurization in step 4 is immersed porous by chemical gaseous phase In carbon/carbon composite green body after deposition processes, pressure is to carry out dipping 2h-10h under 1.0MPa-6.0MPa, is then carried out Curing process turns retort charing process after coming out of the stove, carbonization temperature is 800 DEG C -1050 DEG C, keeps the temperature 2h-5h, is repeated several times, To density >=1.65g/cm3When be transferred to compact process of lower road；
Step 6：Carbon/carbon composite green body after step 5 densification is turned to carry out at high temperature graphitization in high temperature graphitization stove Reason is warming up to 1600 DEG C -2500 DEG C under conditions of heating rate is 5 DEG C/h-200 DEG C/h, then keeps the temperature 2h-4h and carries out high temperature Graphitization processing, natural cooling；
Step 7：By step 6 high temperature graphitization, treated that carbon/carbon composite green body carries out graphene, a resin again mixes Close object dipping, curing and carbonization treatment, the same step 5 for the treatment of process；
Step 8：Use for electric locomotive graphene is made after over mechanical processing in the carbon/carbon composite green body that step 7 is come out of the stove Modified charcoal/charcoal pantograph pan.
2. a kind of use for electric locomotive graphene as described in claim 1 is modified the preparation method of charcoal/charcoal pantograph pan, special Sign is that the oxidization fiber felt needle nematophore cloth pin density described in step 1 is 20 needles/cm2- 80 needles/cm2。
3. a kind of use for electric locomotive graphene as described in claim 1 is modified the preparation method of charcoal/charcoal pantograph pan, special Sign is, the oxidization fiber felt charing process temperature described in step 2 is 550 DEG C -700 DEG C, heating rate is 2 DEG C/h-20 DEG C/ H, soaking time 1h-8h.
4. a kind of use for electric locomotive graphene as described in claim 1 is modified the preparation method of charcoal/charcoal pantograph pan, special Sign is that the chemical vapor deposition densification technique described in step 3, heating rate is 5 DEG C/h-100 DEG C/h, and depositing temperature is 800 DEG C -1050 DEG C, sedimentation time 50h-300h；Using methane and propane mixture as carbon-source gas, methane and propane Mixed volume ratio be 1：0.5-6, gas flow 0.5m3/h-6.0m3/h。
5. a kind of use for electric locomotive graphene as described in claim 1 is modified the preparation method of charcoal/charcoal pantograph pan, special Sign is that the resin described in step 4 includes phenolic resin, epoxy resin and furfural acetone resin, and organic solvent includes N- methyl pyrroles Object is mixed by any ratio in pyrrolidone, dodecyl sodium sulfate or the two.
6. a kind of use for electric locomotive graphene as described in claim 1 is modified the preparation method of charcoal/charcoal pantograph pan, special Sign is, the solidification temperature described in step 5 and step 7 is 120 DEG C -200 DEG C, charing heating rate is 5 DEG C/h-80 DEG C/ h。
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