CN116003157A - Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate - Google Patents
Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate Download PDFInfo
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- CN116003157A CN116003157A CN202310031403.1A CN202310031403A CN116003157A CN 116003157 A CN116003157 A CN 116003157A CN 202310031403 A CN202310031403 A CN 202310031403A CN 116003157 A CN116003157 A CN 116003157A
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- parts
- carbon
- pantograph
- copper
- slide plate
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- ASMQGLCHMVWBQR-UHFFFAOYSA-M diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)([O-])OC1=CC=CC=C1 ASMQGLCHMVWBQR-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000011302 mesophase pitch Substances 0.000 claims abstract description 10
- 239000002116 nanohorn Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 125000006267 biphenyl group Chemical group 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002134 carbon nanofiber Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229920006247 high-performance elastomer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention relates to a composition for a pantograph copper-impregnated carbon slide plate, which comprises the following components in parts by weight: 15-35 parts of mesophase pitch, 15-25 parts of ethylene propylene rubber, 40-50 parts of graphite powder, 7-9 parts of cuprous diphenyl phosphate and 1-3 parts of single-walled carbon nanohorn. The invention also provides a preparation method of the carbon blank for the pantograph copper-impregnated carbon slide plate, which takes the composition as a raw material, and the carbon blank for the pantograph copper-impregnated carbon slide plate. The invention further provides a pantograph copper-impregnated carbon slide plate with low resistivity and high flexural strength.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a composition for a pantograph copper-impregnated carbon slide plate and a prepared pantograph copper-impregnated carbon slide plate.
Background
At present, most rail transit including high-speed railways adopts electric traction, namely adopts a contact net and pantograph combination mode to provide power for rail trains. Wherein the pantograph functions to continuously and stably conduct current from the power supply line to the locomotive or motor car. The sliding plate is mainly arranged at the top of the pantograph and is a part of the pantograph which is directly in friction contact with a power grid wire. The skateboard is used in high-speed, current-carrying and friction environments, and the skateboard material is required to have excellent conductive performance, extremely low friction coefficient, good physical and mechanical properties such as impact resistance and the like. Under the great trend of continuously improving the running speed of the train, more and more requirements and higher requirements are also put forward on the material performance of the pantograph slide plate. These have all prompted the continued development of skateboard materials.
At present, the high-speed railway locomotives at home and abroad mainly use pure carbon sliding plates and metal-immersed carbon sliding plates. The pure carbon sliding plate has positive significance for reducing the abrasion of the lead and prolonging the service life of the lead, but has low mechanical strength and poor impact resistance, and is easy to cause the sliding plate to break or crack in operation to cause the bow net fault. The metal-immersed sliding plate has the excellent performances of high mechanical strength, small resistivity, small abrasion to the lead and strong arc extinguishing property, but has insufficient impact resistance and is easy to fall off or break. The invention discloses a preparation method of a copper-impregnated carbon sliding plate for a pantograph for high-speed rails, which is disclosed in Chinese patent application publication No. CN107556059A (publication No. 2018, 1, 9), wherein the breaking strength of the prepared copper-impregnated carbon sliding plate is 91-106MPa. And the breaking strength of the sliding plate disclosed in the Chinese patent application No. CN113582712A, namely a preparation method of the spiral carbon nanofiber reinforced pantograph sliding plate (2021, 11, 2 days of publication), is only 90-94MPa. These skillets still have a gap compared to the imported product.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a composition for a pantograph copper-impregnated carbon slide plate and the prepared pantograph copper-impregnated carbon slide plate. The copper-impregnated carbon slide plate prepared by the invention has low resistivity and high flexural strength.
In order to achieve the above effects, the present invention adopts the following technical scheme:
the composition for the copper-impregnated carbon slide plate of the pantograph comprises the following components in parts by weight:
15-35 parts of mesophase pitch, 15-25 parts of ethylene propylene rubber, 40-50 parts of graphite powder, 7-9 parts of cuprous diphenyl phosphate and 1-3 parts of single-walled carbon nanohorn.
Preferably, the composition comprises the following components in parts by weight:
22-28 parts of mesophase pitch, 19-21 parts of ethylene propylene rubber, 42-48 parts of graphite powder, 7.5-8.5 parts of cuprous diphenyl phosphate and 1.5-2.5 parts of single-walled carbon nanohorn.
The invention also aims at providing a preparation method of the carbon blank for the pantograph copper-immersed carbon slide plate, which adopts the composition as a raw material and comprises the following steps:
I. preparing the components of the raw materials according to the proportion;
heating the mesophase pitch to 130-150 ℃, adding ethylene propylene rubber, graphite powder, cuprous diphenyl phosphate and single-walled carbon nanohorn, mixing for 20-40 minutes, and extruding to obtain a carbon blank preform;
and III, roasting the carbon blank preform obtained in the step II at 1000-1300 ℃ for 160-170 hours, and cooling to obtain the carbon blank preform.
Therefore, the invention also provides a carbon blank for the pantograph copper-immersed carbon slide plate, which is obtained by the preparation method.
The invention also aims at providing a preparation method of the pantograph copper-impregnated carbon slide plate, which comprises the following operations:
placing the carbon blank and the copper block for the pantograph copper-immersed carbon slide plate into an immersion tank, wherein the mass of the copper block is not less than 5 times of that of the carbon blank, vacuumizing to ensure that the vacuum degree in the tank is more than 0.098MPa, heating to 1350-1400 ℃, and keeping for more than 120 minutes; stopping heating, maintaining vacuum degree, cooling with the tank, and taking out.
The invention also provides the pantograph copper-impregnated carbon slide plate prepared by the preparation method.
The invention adopts the ethylene propylene rubber and the mesophase pitch as the matrix of the carbon blank raw materials, has good compatibility and small viscosity after being heated, is beneficial to the dispersion of other materials, ensures the uniform mixing of the components and can obviously improve the mixing, stirring and extrusion molding performances of the blank. The ethylene propylene rubber has certain strength and is beneficial to keeping the shape of the extruded carbon blank. During the roasting process of the blank, ethylene propylene rubber is ablated basically without residue, and dense pore channels are reserved in the blank and on the surface of the blank, so that copper is immersed in the blank.
The diphenyl cuprous phosphate is decomposed at high temperature, and the product has certain mechanical strength, plays a role of an adhesive for other components, can reduce collapse of the carbon blank and increase the strength of the carbon blank. Meanwhile, with the decomposition of the cuprous diphenyl phosphate, the carbon blank obtains more void channels, which is beneficial to improving the copper leaching amount and reducing the internal porosity in the subsequent copper leaching process, thereby improving the strength of the sliding plate and reducing the resistance of the sliding plate. In addition, copper and copper compounds decomposed by the cuprous diphenyl phosphate can conduct electricity, so that the conductivity of the skateboard is enhanced.
In the prior art, in order to improve the strength of carbon-based skateboards, carbon fiber reinforcement is often adopted. Chinese patent application of invention of publication No. CN107556059a (publication date 2018, 1 month, 9). The single-tube carbon nanohorn adopted by the invention is more uniformly dispersed in the system, and can ensure that the material has higher strength and conductivity. Meanwhile, the carbon nanohorn has a larger internal space, and larger holes and channels can be formed after the carbon blank is baked, so that the copper can be diffused in the sliding plate to form a conductive network in the subsequent dipping process.
In addition, because materials such as fiber and the like are not used, the carbon blank manufacturing method is simple and convenient. Organic solvents such as toluene and the like are not needed, and the method is environment-friendly.
According to the invention, the carbon blank is immersed in a vacuum environment, so that on one hand, air in the carbon blank is pumped out, and copper can enter the carbon blank conveniently; on the other hand, the melting point of copper under vacuum is obviously reduced, the viscosity is reduced, and the dipping effect is also improved.
Detailed Description
The invention is described below with reference to specific examples. It will be appreciated by those skilled in the art that these examples are for illustration of the invention only and are not intended to limit the scope of the invention in any way.
The experimental methods in the following examples are conventional methods unless otherwise specified. The raw materials, reagent materials and the like used in the examples described below are commercially available products unless otherwise specified. Wherein, the purchase condition of partial raw materials is as follows:
mesophase pitch: liaohe petrochemical division of China Petroleum and Natural gas stock Limited
Ethylene propylene rubber, trade name, 8570C, albixin family high Performance elastomer (Changzhou Co., ltd.)
Graphite powder, 80 mesh, qingdao Tianyuan graphite Co., ltd
Diphenyl cuprous phosphate, shanghai score auspicious biotechnology Co., ltd
Single-walled carbon nanohorns: chinese academy of sciences Chengdu organic chemical Co., ltd
Copper: minodyn (Beijing) technology Co., ltd
Examples 1 to 5A method for manufacturing a Pantograph slide plate and a Pantograph slide plate manufactured thereby
The method for preparing the pantograph slide plate of the embodiment 1-5 comprises the steps of preparing a carbon blank and immersing copper; the preparation of the carbon blank comprises the following steps:
I. the components of the raw materials were prepared as shown in table 1;
heating the mesophase pitch to 130-150 ℃, adding ethylene propylene rubber, graphite powder, cuprous diphenyl phosphate and single-walled carbon nanohorn, mixing for 20-40 minutes, and extruding to obtain a carbon blank preform;
and III, roasting the carbon blank preform obtained in the step II at 1000-1300 ℃ for 160-170 hours, and cooling to obtain the carbon blank preform.
Placing the carbon blank into an impregnation tank, placing a copper block, vacuumizing to ensure that the vacuum degree in the tank is more than 0.098MPa, heating to 1350-1400 ℃, and keeping for more than 120 minutes; stopping heating, maintaining vacuum degree, cooling with the tank, and taking out to obtain the pantograph slide plate.
The resistivity and flexural strength of the pantograph slides of examples 1-5 are shown in table 1.
Comparative examples 1-2 preparation method of Pantograph slide plate and Pantograph slide plate prepared by the same
The preparation method of the pantograph slide plate of comparative examples 1-2 also comprises preparation of carbon blank and copper impregnation, and the steps and processes are the same as those of examples 1-5, except that the component amounts of the raw materials of the carbon blank are different, and specifically shown in table 1.
The resistivity and flexural strength of the pantograph slide plates obtained in comparative examples 1-2 are shown in Table 1.
Table 1 carbon raw materials and pan properties of pantograph pan of examples and comparative examples
Claims (6)
1. The composition for the copper-impregnated carbon slide plate of the pantograph comprises the following components in parts by weight:
15-35 parts of mesophase pitch, 15-25 parts of ethylene propylene rubber, 40-50 parts of graphite powder, 7-9 parts of cuprous diphenyl phosphate and 1-3 parts of single-walled carbon nanohorn.
2. The composition according to claim 1, wherein the composition comprises the following components in parts by weight:
22-28 parts of mesophase pitch, 19-21 parts of ethylene propylene rubber, 42-48 parts of graphite powder, 7.5-8.5 parts of cuprous diphenyl phosphate and 1.5-2.5 parts of single-walled carbon nanohorn.
3. A method for preparing a carbon blank for a pantograph copper-impregnated carbon slide plate, which adopts the composition as the raw material according to claim 1 or 2, and comprises the following steps:
I. preparing the components of the raw materials according to the proportion;
heating the mesophase pitch to 130-150 ℃, adding ethylene propylene rubber, graphite powder, cuprous diphenyl phosphate and single-walled carbon nanohorn, mixing for 20-40 minutes, and extruding to obtain a carbon blank preform;
and III, roasting the carbon blank preform obtained in the step II at 1000-1300 ℃ for 160-170 hours, and cooling to obtain the carbon blank preform.
4. A carbon blank for a pantograph copper-impregnated carbon slide plate, obtained by the production method of claim 3.
5. A preparation method of a pantograph copper-immersed carbon slide plate comprises the following operations:
placing the carbon blank and the copper block for the pantograph copper-immersed carbon slide plate in the immersing tank, wherein the mass of the copper block is not less than 5 times that of the carbon blank, vacuumizing to ensure that the vacuum degree in the tank is more than 0.098MPa, heating to 1350-1400 ℃, and keeping for more than 120 minutes; stopping heating, maintaining vacuum degree, cooling with the tank, and taking out.
6. A copper-impregnated carbon slide plate for a pantograph, prepared by the preparation method of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310031403.1A CN116003157B (en) | 2023-01-10 | 2023-01-10 | Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310031403.1A CN116003157B (en) | 2023-01-10 | 2023-01-10 | Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate |
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| Publication Number | Publication Date |
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| CN116003157A true CN116003157A (en) | 2023-04-25 |
| CN116003157B CN116003157B (en) | 2024-02-02 |
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| CN202310031403.1A Active CN116003157B (en) | 2023-01-10 | 2023-01-10 | Composition for pantograph copper-impregnated carbon sliding plate and prepared pantograph sliding plate |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06284506A (en) * | 1993-03-31 | 1994-10-07 | Nippon Steel Corp | Sliding current collecting material for pantograph |
| CN104760504A (en) * | 2015-04-03 | 2015-07-08 | 中南大学 | Carbon fiber reinforced carbon pantograph slider for electric vehicle |
| CN107556059A (en) * | 2017-08-29 | 2018-01-09 | 自贡东新电碳有限责任公司 | A kind of preparation method of high ferro with pantograph with leaching copper carbon slide plate |
| CN108422868A (en) * | 2018-05-10 | 2018-08-21 | 青岛大学 | A kind of pantograph pan carbon fibre composite and preparation method |
| CN110238381A (en) * | 2019-06-24 | 2019-09-17 | 东北大学 | A kind of bullet train graphene copper Material for Pantograph Slide and preparation method |
| CN113582712A (en) * | 2021-09-07 | 2021-11-02 | 泸州职业技术学院 | Preparation method of spiral carbon nanofiber reinforced pantograph slide plate |
| CN114957867A (en) * | 2022-07-14 | 2022-08-30 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Friction body composition for truck composite brake shoe and truck composite brake shoe prepared from friction body composition |
-
2023
- 2023-01-10 CN CN202310031403.1A patent/CN116003157B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06284506A (en) * | 1993-03-31 | 1994-10-07 | Nippon Steel Corp | Sliding current collecting material for pantograph |
| CN104760504A (en) * | 2015-04-03 | 2015-07-08 | 中南大学 | Carbon fiber reinforced carbon pantograph slider for electric vehicle |
| CN107556059A (en) * | 2017-08-29 | 2018-01-09 | 自贡东新电碳有限责任公司 | A kind of preparation method of high ferro with pantograph with leaching copper carbon slide plate |
| CN108422868A (en) * | 2018-05-10 | 2018-08-21 | 青岛大学 | A kind of pantograph pan carbon fibre composite and preparation method |
| CN110238381A (en) * | 2019-06-24 | 2019-09-17 | 东北大学 | A kind of bullet train graphene copper Material for Pantograph Slide and preparation method |
| CN113582712A (en) * | 2021-09-07 | 2021-11-02 | 泸州职业技术学院 | Preparation method of spiral carbon nanofiber reinforced pantograph slide plate |
| CN114957867A (en) * | 2022-07-14 | 2022-08-30 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Friction body composition for truck composite brake shoe and truck composite brake shoe prepared from friction body composition |
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