CN107696870A - Rice wheat straw graphene single track vehicles pantograph sliding block and its production technology - Google Patents
Rice wheat straw graphene single track vehicles pantograph sliding block and its production technology Download PDFInfo
- Publication number
- CN107696870A CN107696870A CN201711122814.2A CN201711122814A CN107696870A CN 107696870 A CN107696870 A CN 107696870A CN 201711122814 A CN201711122814 A CN 201711122814A CN 107696870 A CN107696870 A CN 107696870A
- Authority
- CN
- China
- Prior art keywords
- wheat straw
- rice wheat
- sliding block
- straw graphene
- slider body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 240000000359 Triticum dicoccon Species 0.000 title claims abstract description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 54
- 239000010902 straw Substances 0.000 title claims abstract description 54
- 238000005516 engineering process Methods 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 230000003137 locomotive effect Effects 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052790 beryllium Inorganic materials 0.000 claims description 9
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 9
- 229910052718 tin Inorganic materials 0.000 claims description 9
- 239000010946 fine silver Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000012271 agricultural production Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000001994 activation Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a kind of rice wheat straw graphene single track vehicles pantograph sliding block, for single rail electric traction locomotive, including slider body, the slider body is rectangular-shape, slider body side is provided with elongated notch, notch sets along in the middle part of slider body side and is square parallel to slider body bottom surface, notch, and pocket side wall gradually collapses from the outside to the core；The slider body is rice wheat straw graphene alloy sliding block.Rice wheat straw graphene single track vehicles pantograph sliding block density of the present invention is big, hardness is big, and friction and wear behavior and electric conductivity are superior, and the operation of single rail electric traction locomotive can be made very unimpeded, extend pantograph sliding block service life.The advantages of main material is extracted by rice wheat straw, makes agricultural production recycling waste, can reduce environmental pollution, while also processing cost is low, cheap.
Description
Technical field
The present invention relates to electric locomotive technical field, more particularly to a kind of rice wheat straw graphene single track vehicles pantograph to slide
Block and its production technology.
Background technology
Pantograph sliding block is the electrical equipment that single rail electric traction locomotive obtains electric energy from contact net, installed in locomotive bottom
Portion.Load current passes through contact line and pantograph shoe contact, smooth degree contact between sliding block and contact line of contact surface
Pressure, transition resistance, contact area are relevant, depending on the interaction between pantograph and contact net, therefore single track pantograph
The quality of the alloy material of sliding block directly affects single rail electric traction locomotive normal operation.Present pantograph alloy sliding block, it is general
Store-through maintenance cost it is higher and easily in failure when break contact net, the problem of anti-wear performance is poor, and service life is short.
The content of the invention
It is an object of the invention to provide a kind of rice wheat straw graphene single track vehicles pantograph sliding block and its production technology,
In solving the problems, such as that existing pantograph sliding block maintenance cost is high, anti-wear performance is poor, service life is short, improve pantograph easily in event
The present situation of contact net is broken during barrier.
To achieve the above object, the technical scheme is that：A kind of rice wheat straw graphene single track vehicles pantograph is slided
Block, for single rail electric traction locomotive, including slider body, the slider body is rectangular-shape, and slider body side is provided with
Elongated notch, notch are set and parallel to slider body bottom surface along in the middle part of slider body side, and notch is square, pocket side wall
Gradually collapse from the outside to the core；The slider body is rice wheat straw graphene alloy sliding block.
Preferably, the rice wheat straw graphene alloy sliding block includes following components to one kind as this programme：Fine copper,
99.99 fine silver, beryllium, tin, rice wheat straw graphene, phosphorus, lead.
A kind of production technology of rice wheat straw graphene single track vehicles pantograph sliding block, comprises the following steps：
Step 1: weigh following component：Fine copper, 99.99 fine silver, beryllium, tin, rice wheat straw graphene, phosphorus, lead；
Step 2: fine copper is put into sealing smelting furnace, temperature rises to 1100 DEG C；After fine copper melts completely, silver and stirring 1 are added
Hour, pour nitrogen in whipping process；Then add beryllium and stir 30 minutes；When liquid color turns white in stove, rice wheat is added
Stalk graphene simultaneously stirs 1 hour；
Step 3: temperature is down to 950 DEG C, lead is added, is stirred 10 minutes after standing 30 minutes；Add tin and stir 1 hour；
Step 4: temperature rises to 1050 DEG C, nitrogen is discharged in temperature-rise period；Chlorine then is poured, is discharged after 20 minutes；Rush again
Enter nitrogen, add phosphorus and stir 30 minutes；
It is cooled and shaped Step 5: liquid in stove is poured into mould, obtains rice wheat straw graphene alloy block；
Step 6: rice wheat straw graphene alloy block is put into fire in electric furnace, fire temperature is 800 DEG C, is used during fire
Nitrogen is protected；
Step 7: the rice wheat straw graphene alloy block after fire is forged into rectangular-shape；
Step 8: machining, carries out slot treatment to rice wheat straw graphene alloy block, obtains rice wheat straw graphene single track
Motorcycle pantograph sliding block.
Index by rice wheat straw graphene single track vehicles pantograph sliding block made from the above method is as follows：
Brinell hardness >=85HB；
Resistivity >=0.34u Ω m；
Bulk density≤8.1g/cm3；
Impact flexibility >=4.22/cm2；
Tensile strength >=157Mpa；
Bending strength >=90Mpa；
Weight wear resistance ratio≤the locomotive kilometers of 240g/ ten thousand.
The beneficial effects of the invention are as follows：Rice wheat straw graphene single track vehicles pantograph sliding block density of the present invention is big, hardness is big, rubs
Wipe polishing machine and electric conductivity is superior, the operation of single rail electric traction locomotive can be made very unimpeded, extend pantograph sliding block and use
Life-span.Rice wheat straw graphene single track vehicles pantograph sliding block main material of the present invention is extracted by rice wheat straw, agricultural production is given up
The advantages of gurry recycles, and can reduce environmental pollution, while also processing cost is low, cheap.
Brief description of the drawings
Fig. 1 is the structural representation of rice wheat straw graphene single track vehicles pantograph sliding block of the present invention.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below in conjunction with accompanying drawing.
As shown in figure 1, a kind of rice wheat straw graphene single track vehicles pantograph sliding block, for single rail electric traction locomotive,
Including slider body 1, the slider body 1 is rectangular-shape, and the side of slider body 1 is provided with elongated notch 2, and notch 2 is along cunning
Set in the middle part of the side of block body 1, notch 2 is square, and the side wall of notch 2 gradually collapses form inclined-plane from the outside to the core；The notch 2 is deep
Degree, the bottom surface of notch 2 is formed slopely inclined-plane from one end to the other end；The slider body 1 is rice wheat straw graphene alloy
Sliding block.
The rice wheat straw graphene alloy sliding block includes following components：Fine copper, 99.99 fine silver, beryllium, tin, rice wheat straw
Graphene, phosphorus, lead.
A kind of production technology of rice wheat straw graphene single track vehicles pantograph sliding block, comprises the following steps：
Step 1: weigh following component：Fine copper, 99.99 fine silver, beryllium, tin, rice wheat straw graphene, phosphorus, lead；
Step 2: fine copper is put into sealing smelting furnace, temperature rises to 1100 DEG C；After fine copper melts completely, silver and stirring 1 are added
Hour, pour nitrogen in whipping process；Then add beryllium and stir 30 minutes；When liquid color turns white in stove, rice wheat is added
Stalk graphene simultaneously stirs 1 hour；
Step 3: temperature is down to 950 DEG C, lead is added, is stirred 10 minutes after standing 30 minutes；Add tin and stir 1 hour；
Step 4: temperature rises to 1050 DEG C, nitrogen is discharged in temperature-rise period；Chlorine then is poured, is discharged after 20 minutes；Rush again
Enter nitrogen, add phosphorus and stir 30 minutes；
It is cooled and shaped Step 5: liquid in stove is poured into mould, obtains rice wheat straw graphene alloy block；
Step 6: rice wheat straw graphene alloy block is put into fire in electric furnace, fire temperature is 800 DEG C, is used during fire
Nitrogen is protected；
Step 7: the rice wheat straw graphene alloy block after fire is forged into rectangular-shape；
Step 8: machining, carries out slot treatment to rice wheat straw graphene alloy block, obtains rice wheat straw graphene single track
Motorcycle pantograph sliding block.
Wherein, the production technology of the rice wheat straw graphene is：
By rice wheat straw oxygen deprivation calcining powdered carbon is made, by after the powdered carbon activation process under 2400 to 2600 degrees Celsius of environment stone
Mo Hua, and Delanium is made through activation, enhancing processing；
The concentrated sulfuric acid is added in reaction pot, the concentrated sulfuric acid is cooled to less than 0 degree Celsius, the Delanium is added and is stirred,
Sodium nitrate is added to react 50 minutes under 3 degrees Celsius of environment；
Potassium permanganate is added in reaction pot, temperature control is reacted 1 hour at 98 to 100 degrees Celsius, then controls temperature to be down to
35 degrees Celsius are reacted 1 hour；
Drying obtains rice wheat straw graphene in 30 to 45 degrees Celsius of environment after the centrifuge washing removal concentrated sulfuric acid.
Index by rice wheat straw graphene single track vehicles pantograph sliding block made from the above method is as follows：
Brinell hardness >=85HB；
Resistivity >=0.34u Ω m；
Bulk density≤8.1g/cm3；
Impact flexibility >=4.22/cm2；
Tensile strength >=157Mpa；
Bending strength >=90Mpa；
Weight wear resistance ratio≤the locomotive kilometers of 240g/ ten thousand.
The rice wheat straw graphene single track vehicles pantograph sliding block density is big, hardness is big, friction and wear behavior and conduction
Superior performance, the operation of single rail electric traction locomotive can be made very unimpeded, extend pantograph sliding block service life.Main material is by rice wheat
Stalk extracts, and makes agricultural production recycling waste, can reduce environmental pollution, at the same also processing cost is low, price just
The advantages of suitable.
Described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the present invention.
Claims (4)
1. a kind of rice wheat straw graphene single track vehicles pantograph sliding block, for single rail electric traction locomotive, including slider body,
Characterized in that, the slider body is rectangular-shape, slider body side is provided with elongated notch, and notch is along slider body side
Middle face sets and is square parallel to slider body bottom surface, notch, and pocket side wall gradually collapses from the outside to the core, the sliding block sheet
Body is rice wheat straw graphene alloy sliding block.
A kind of 2. rice wheat straw graphene single track vehicles pantograph sliding block as claimed in claim 1, it is characterised in that the rice
Wheat Straw graphene alloy sliding block includes following components：Fine copper, 99.99 fine silver, beryllium, tin, rice wheat straw graphene, phosphorus, lead.
3. a kind of production technology of rice wheat straw graphene single track vehicles pantograph sliding block, it is characterised in that comprise the following steps：
Step 1: weigh following component：Fine copper, 99.99 fine silver, beryllium, tin, rice wheat straw graphene, phosphorus, lead；
Step 2: fine copper is put into sealing smelting furnace, temperature rises to 1100 DEG C；After fine copper melts completely, silver and stirring 1 are added
Hour, pour nitrogen in whipping process；Then add beryllium and stir 30 minutes；When liquid color turns white in stove, rice wheat is added
Stalk graphene simultaneously stirs 1 hour；
Step 3: temperature is down to 950 DEG C, lead is added, is stirred 10 minutes after standing 30 minutes；Add tin and stir 1 hour；
Step 4: temperature rises to 1050 DEG C, nitrogen is discharged in temperature-rise period；Chlorine then is poured, is discharged after 20 minutes；Rush again
Enter nitrogen, add phosphorus and stir 30 minutes；
It is cooled and shaped Step 5: liquid in stove is poured into mould, obtains rice wheat straw graphene alloy block；
Step 6: rice wheat straw graphene alloy block is put into fire in electric furnace, fire temperature is 800 DEG C, is used during fire
Nitrogen is protected；
Step 7: the rice wheat straw graphene alloy block after fire is forged into rectangular-shape；
Step 8: machining, carries out slot treatment to rice wheat straw graphene alloy block, obtains rice wheat straw graphene single track
Motorcycle pantograph sliding block.
4. a kind of production technology of rice wheat straw graphene single track vehicles pantograph sliding block as claimed in claim 3, its feature
It is, the index of the rice wheat straw graphene single track vehicles pantograph sliding block is as follows：
Brinell hardness >=85HB；
Resistivity >=0.34u Ω m；
Bulk density≤8.1g/cm3；
Impact flexibility >=4.22/cm2；
Tensile strength >=157Mpa；
Bending strength >=90Mpa；
Weight wear resistance ratio≤the locomotive kilometers of 240g/ ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122814.2A CN107696870A (en) | 2017-11-14 | 2017-11-14 | Rice wheat straw graphene single track vehicles pantograph sliding block and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122814.2A CN107696870A (en) | 2017-11-14 | 2017-11-14 | Rice wheat straw graphene single track vehicles pantograph sliding block and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107696870A true CN107696870A (en) | 2018-02-16 |
Family
ID=61179455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711122814.2A Pending CN107696870A (en) | 2017-11-14 | 2017-11-14 | Rice wheat straw graphene single track vehicles pantograph sliding block and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107696870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020056577A1 (en) * | 2018-09-18 | 2020-03-26 | 江苏金麦穗新能源科技股份有限公司 | Production process for rice-wheat straw graphene as friction material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
| US20120074094A1 (en) * | 2010-09-24 | 2012-03-29 | Kuang Hong Precision Co., Ltd. | Manufacturing Method for Forming Circuit Structure on Non-Conductive Carrier |
| CN202399927U (en) * | 2011-11-08 | 2012-08-29 | 北京赛德高科铁道电气科技有限责任公司 | Pantograph slide plate |
| CN105671357A (en) * | 2016-01-21 | 2016-06-15 | 河北工程大学 | Copper-based pantograph slide plate material and preparation method thereof |
| CN106395799A (en) * | 2016-08-25 | 2017-02-15 | 江苏金麦穗新能源科技股份有限公司 | Production process of rice wheat straw graphene for friction material |
| CN207388889U (en) * | 2017-11-14 | 2018-05-22 | 盐城金麦穗科技发展有限公司 | A kind of rice wheat straw graphene single track vehicles pantograph sliding block |
-
2017
- 2017-11-14 CN CN201711122814.2A patent/CN107696870A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
| US20120074094A1 (en) * | 2010-09-24 | 2012-03-29 | Kuang Hong Precision Co., Ltd. | Manufacturing Method for Forming Circuit Structure on Non-Conductive Carrier |
| CN202399927U (en) * | 2011-11-08 | 2012-08-29 | 北京赛德高科铁道电气科技有限责任公司 | Pantograph slide plate |
| CN105671357A (en) * | 2016-01-21 | 2016-06-15 | 河北工程大学 | Copper-based pantograph slide plate material and preparation method thereof |
| CN106395799A (en) * | 2016-08-25 | 2017-02-15 | 江苏金麦穗新能源科技股份有限公司 | Production process of rice wheat straw graphene for friction material |
| CN207388889U (en) * | 2017-11-14 | 2018-05-22 | 盐城金麦穗科技发展有限公司 | A kind of rice wheat straw graphene single track vehicles pantograph sliding block |
Non-Patent Citations (1)
| Title |
|---|
| 蒋智清: "物理化学实验指导", 陕西师范大学出版总社有限公司, pages: 144 - 145 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020056577A1 (en) * | 2018-09-18 | 2020-03-26 | 江苏金麦穗新能源科技股份有限公司 | Production process for rice-wheat straw graphene as friction material |
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Application publication date: 20180216 |
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