CN110238381B - Graphene copper pantograph sliding plate material for high-speed train and preparation method - Google Patents
Graphene copper pantograph sliding plate material for high-speed train and preparation method Download PDFInfo
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- CN110238381B CN110238381B CN201910548311.4A CN201910548311A CN110238381B CN 110238381 B CN110238381 B CN 110238381B CN 201910548311 A CN201910548311 A CN 201910548311A CN 110238381 B CN110238381 B CN 110238381B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 14
- 239000010949 copper Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 238000007731 hot pressing Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 14
- 239000010439 graphite Substances 0.000 claims description 14
- 239000002041 carbon nanotube Substances 0.000 claims description 12
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000002679 ablation Methods 0.000 abstract 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000006235 reinforcing carbon black Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000006253 pitch coke Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- 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
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/20—Details of contact bow
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention provides a graphene copper pantograph slide plate material for a high-speed train and a preparation method thereof. After all the components are uniformly mixed, the mixture is directly molded by a hot pressing method. The pantograph slide plate prepared by the invention has the advantages of good conductivity, wear resistance, impact resistance, ablation resistance and the like, and meanwhile, the wear of the contact net wire is small. The sliding plate is simple in preparation process, and the performance of the sliding plate is far better than that of a conventional carbon sliding plate and a metal-impregnated sliding plate. The slide plate material is not only suitable for being used as a pantograph slide plate of high-speed trains such as high-speed rails and motor trains, but also suitable for being used as an electric contact material of low-speed vehicles such as subways.
Description
Technical Field
The invention belongs to the field of new materials, and relates to a preparation method of a high-performance graphene copper pantograph slide plate material, which can be used on high-speed trains such as high-speed rails and motor trains, and can also be used on low-speed trains such as urban subways.
Background
The pantograph slide plate is called slide plate for short, and is an important current collecting element on trains such as high-speed rails and motor trains. The slide plate is installed on the pantograph and directly contacts with a contact network wire, and the current on the power transmission network is guided and transmitted to a locomotive power supply system through the contact of the pantograph slide plate and the power transmission network wire so as to maintain the normal operation of the electric locomotive. Therefore, the sliding plate is required to have good performances such as conductivity, wear resistance and impact toughness, and the sliding plate is required to have the lowest possible abrasion to the wires of the contact net. With the rapid development of high-speed rails, the improvement of the performance of the skateboard becomes one of the key research and development points at home and abroad.
There are three main types of skateboards in common use today: carbon slides, powder metallurgy slides, and metal impregnated carbon slides. Carbon sliding plates have good wear resistance, but have high resistivity and poor impact resistance, and are prone to fracture. The powder metallurgy sliding plate has good conductivity and impact toughness, but the abrasion to a contact net lead is serious, so that the contact net is broken. The metal-impregnated carbon sliding plate has higher conductivity and impact toughness than a carbon sliding plate, but the metal-impregnated carbon sliding plate also has serious abrasion to a contact net wire and is easy to break off in the operation process. In order to overcome the defects of the pantograph slide plate in use, various improved pantograph slide plates, such as an aluminum-clad carbon slide plate, a carbon fiber reinforced carbon slide plate, a graphite reinforced aluminum slide plate and the like, are successively developed and developed, and various problems still exist although the performance is improved.
For example, the invention patent with the publication number of CN108422868A discloses a carbon-carbon composite material pantograph pan for an electric locomotive, which uses carbon fiber cloth, phenolic resin, nitrile rubber and graphite powder as continuous phases, and uses chopped carbon fiber and copper fiber as reinforcing phases to prepare a carbon fiber composite material, and not only the preparation process is complex, but also the electrical resistivity of the pan is higher.
Patent publication No. CN108503363A discloses a carbon-carbon composite pantograph carbon slide plate and a preparation method thereof, the slide plate is prepared by taking carbon, pitch coke, semi-reinforcing carbon black, graphite and an adhesive as raw materials through complex processes such as extrusion molding and green body roasting, and has good wear resistance, poor strength and high resistivity.
The invention patent with publication number CN105272254A discloses a preparation method of a pantograph carbon slide plate material, wherein the slide plate uses electrolytic graphene, semi-reinforcing carbon black, acicular petroleum coke and the like as raw materials, and the preparation method comprises the processes of kneading, molding, primary roasting, dipping, secondary roasting and the like. Although the sliding plate has good impact resistance, the preparation process of the sliding plate is complicated, and the comprehensive performance of the sliding plate is not good.
Disclosure of Invention
The invention aims to provide a preparation method of a high-performance pantograph slide plate material aiming at the defects in the prior art. After all the components are uniformly mixed, the mixture is directly molded by a hot pressing method. The specific technical scheme is as follows:
the graphene copper pantograph sliding plate material for the high-speed train comprises the following components in percentage by mass: 2.0-11.0 wt% of graphene, 30.5-60.5 wt% of copper powder, 1.0-19.0 wt% of iron powder, 8.0-37.0 wt% of coke, 1.0-5.0 wt% of carbon nano tube, 0.4-6.2 wt% of graphite fiber and 0.06-0.25 wt% of additive.
The additive is formed by mixing 600-800 mesh titanium powder, 800-1200 mesh tungsten powder and 900-1200 mesh molybdenum powder, wherein the mass ratio of the titanium powder to the tungsten powder to the molybdenum powder is 1:3: 5.
Furthermore, the granularity of the copper powder is 400-600 meshes, and the granularity of the iron powder is 900-1200 meshes.
Furthermore, the carbon nano tube is single-walled or multi-walled, the diameter is 2-10 nm, and the length is 0.5-8 μm.
Further, the coke used has a particle size of 100 to 400 mesh, and the graphite fiber is a high-strength fiber having a diameter of 4 to 8 μm and a length of 0.5 to 3 cm.
The method for preparing the graphene copper pantograph sliding plate material for the high-speed train comprises the following steps:
(1) firstly, uniformly dispersing graphene, an additive and carbon nano tubes in a polyvinyl alcohol solution with the concentration of 8.5% according to the mass ratio of the components of the material, wherein the mass ratio of the graphene to the polyvinyl alcohol is 1:10, then sequentially adding copper powder, iron powder, coke and graphite fibers into the mixed solution, and uniformly stirring;
(2) vacuum drying the mixed solution prepared in the step (1), wherein the drying temperature is 30-50 ℃;
(3) and taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 40-120 MPa, the temperature is 850-1200 ℃, and the heat preservation time is 8-20 minutes, so as to obtain the graphene copper pantograph sliding plate material.
The sliding plate has the beneficial effects of friction and wear resistance, high conductivity, strong shock resistance, self-lubricating property and low abrasion to the contact net wires. The sliding plate is simple in preparation process, and the performance of the sliding plate is far better than that of a conventional carbon sliding plate and a metal-impregnated sliding plate. The slide plate material is not only suitable for being used as a pantograph slide plate of high-speed trains such as high-speed rails and motor trains, but also suitable for being used as an electric contact material of low-speed vehicles such as subways.
Detailed Description
Example 1:
(1) firstly, uniformly dispersing 2 wt% of graphene, 0.20 wt% of additive and 3 wt% of carbon nano tube (the diameter is about 3nm, and the length is about 0.5 μm) in a polyvinyl alcohol solution, and then adding 57 wt% of 400-mesh copper powder, 17 wt% of 900-mesh iron powder, 20.8 wt% of 400-mesh coke and 6 wt% of graphite fiber (the diameter is about 4 μm, and the length is about 2cm) into the solution in sequence, and uniformly stirring.
(2) And (3) drying the mixture in vacuum at the drying temperature of 30 ℃.
(3) And taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 50MPa, the hot-pressing temperature is 1100 ℃, and the heat preservation time is 12 minutes.
The density of the prepared skateboard is 4.27g/cm3Resistivity of 0.12 mu omega m and impact toughness of 5.90J/cm2Bending strength 381MPa, friction coefficient 0.052 and compression strength 370 MPa.
Example 2:
(1) firstly, uniformly dispersing 5 wt% of graphene, 0.10 wt% of additive and 5 wt% of carbon nano tube (the diameter is about 4nm, and the length is about 1 μm) in a polyvinyl alcohol solution, then adding 53 wt% of 500-mesh copper powder, 15 wt% of 1100-mesh iron powder, 19.9 wt% of 200-mesh coke and 2 wt% of graphite fiber (the diameter is about 5 μm, and the length is about 3cm) in the above solution in sequence, and uniformly stirring.
(2) And (3) drying the mixture in vacuum at the drying temperature of 30 ℃.
(3) And taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 80MPa, the hot-pressing temperature is 1000 ℃, and the heat preservation time is 9 minutes.
The density of the prepared skateboard is 4.21g/cm3Resistivity of 0.14. mu. omega. m and impact toughness of 5.72J/cm2Bending strength 370MPa, coefficient of friction0.045 and the compressive strength is 360 MPa.
Example 3:
(1) firstly, uniformly dispersing 8 wt% of graphene, 0.08 wt% of additive and 4 wt% of carbon nano tube (the diameter is about 5nm, and the length is about 2 micrometers) in a polyvinyl alcohol solution, then adding 50 wt% of 600-mesh copper powder, 12 wt% of 1200-mesh iron powder, 23 wt% of 300-mesh coke and 2.92 wt% of graphite fiber (the diameter is about 6 micrometers, and the length is about 1cm) in the above solution in sequence, and uniformly stirring.
(2) And (3) drying the mixture in vacuum at the drying temperature of 30 ℃.
(3) And taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 100MPa, the hot-pressing temperature is 1100 ℃, and the heat preservation time is 8 minutes.
The density of the prepared skateboard is 4.17g/cm3Resistivity of 0.16 mu omega-m and impact toughness of 5.50J/cm2Bending strength 361MPa, friction coefficient 0.040 and compression strength 349 MPa.
Example 4:
(1) firstly, uniformly dispersing 10 wt% of graphene, 0.12 wt% of additive and 2 wt% of carbon nano tube (the diameter is about 8nm, and the length is about 6 micrometers) in a polyvinyl alcohol solution, then adding 48 wt% of 600-mesh copper powder, 10 wt% of 1000-mesh iron powder, 28 wt% of 100-mesh coke and 1.88 wt% of graphite fiber (the diameter is about 8 micrometers, and the length is about 0.5cm) in the above solution in sequence, and uniformly stirring.
(2) And (3) drying the mixture in vacuum at the drying temperature of 30 ℃.
(3) And taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 120MPa, the hot-pressing temperature is 900 ℃, and the heat preservation time is 11 minutes.
The density of the prepared skateboard is 4.11g/cm3Resistivity of 0.18. mu. omega. m and impact toughness of 5.35J/cm2Bending strength 347MPa, friction coefficient 0.032 and compression strength 337 MPa.
Claims (4)
1. The method for preparing the graphene copper pantograph sliding plate material for the high-speed train is characterized by comprising the following steps of:
(1) firstly, uniformly dispersing graphene, an additive and carbon nano tubes in a polyvinyl alcohol solution with the concentration of 8.5% according to the mass ratio of the components of the graphene copper pantograph pan material, wherein the mass ratio of the graphene to the polyvinyl alcohol is 1:10, then sequentially adding copper powder, iron powder, coke and graphite fibers into the mixed solution, and uniformly stirring; the graphene copper pantograph sliding plate material comprises the following components in percentage by mass: 2.0-11.0 wt% of graphene, 30.5-60.5 wt% of copper powder, 1.0-19.0 wt% of iron powder, 8.0-37.0 wt% of coke, 1.0-5.0 wt% of carbon nano tube, 0.4-6.2 wt% of graphite fiber and 0.06-0.25 wt% of additive; the additive is formed by mixing 600-800 mesh titanium powder, 800-1200 mesh tungsten powder and 900-1200 mesh molybdenum powder, and the mass ratio of the titanium powder to the tungsten powder to the molybdenum powder is 1:3: 5;
(2) vacuum drying the mixed solution prepared in the step (1), wherein the drying temperature is 30-50 ℃;
(3) and taking out the dried material, and putting the dried material into a sample hot-pressing groove of a hot press for direct vacuum hot-pressing molding, wherein the pressure during hot pressing is 40-120 MPa, the temperature is 850-1200 ℃, and the heat preservation time is 8-20 minutes, so as to obtain the graphene copper pantograph sliding plate material.
2. The method as claimed in claim 1, wherein the copper powder has a particle size of 400-600 mesh and the iron powder has a particle size of 900-1200 mesh.
3. The method for preparing the graphene copper pantograph pan material for the high-speed train as claimed in claim 1 or 2, wherein the carbon nanotubes used are single-walled or multi-walled, the diameter of the carbon nanotubes is 2-10 nm, and the length of the carbon nanotubes is 0.5-8 μm.
4. The method for preparing the graphene copper pantograph pan material for the high-speed train as claimed in claim 1 or 2, wherein the particle size of the coke is 100-400 meshes, the graphite fiber is a high-strength fiber, the diameter of the graphite fiber is 4-8 μm, and the length of the graphite fiber is 0.5-3 cm.
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| CN110683854A (en) * | 2019-11-21 | 2020-01-14 | 常思荣 | Pantograph carbon slide plate and preparation method thereof |
| CN114457276B (en) * | 2021-12-28 | 2022-11-08 | 苏州市博旺金属工艺制品有限公司 | Preparation method of high-damping composite metal material |
| CN116003157B (en) * | 2023-01-10 | 2024-02-02 | 北京中铁科新材料技术有限公司 | Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate |
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| CN100342054C (en) * | 2005-12-30 | 2007-10-10 | 东北大学 | Pantograph slip plate for electric locomotive and mfg. method thereof |
| CN105291847B (en) * | 2014-07-28 | 2018-05-15 | 湖南元素密码石墨烯高科技有限公司 | A kind of production method of pantograph pan |
| CN105671357B (en) * | 2016-01-21 | 2018-01-16 | 河北工程大学 | A kind of copper-based pantograph sliding material and preparation method thereof |
| CN106007769B (en) * | 2016-05-20 | 2019-03-26 | 大同新成新材料股份有限公司 | A kind of preparation method of use for electric locomotive prestressing force pantograph carbon slide |
| CN109136793A (en) * | 2018-08-28 | 2019-01-04 | 大同新成新材料股份有限公司 | A kind of titanium graphene enhances the preparation method of copper-based carbon slipper composite material |
| CN109108291B (en) * | 2018-09-03 | 2020-07-28 | 大同新成新材料股份有限公司 | Preparation process of carbon fiber reinforced pantograph slide plate |
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