CN105540574B - It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill - Google Patents
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill Download PDFInfo
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Abstract
The present invention relates to grapheme material field, and in particular to the preparation method of graphene microchip, more particularly to a kind of to utilize the method for preparing graphene microchip to spray formula airslide disintegrating mill.Enter the interlayer of graphite by the iron chloride of melting, potassium chloride, utilize iron chloride, the characteristic of the easy brittle failure of potassium chloride crystal grain, using talcum powder good fluidity, be difficult reunite characteristic, powder is collided in spray formula airslide disintegrating mill by high velocity air, what is produced hits power, shearing force, frictional force by graphite and talcum powder delamination, is further sorted by grading room, unqualified powder is back to pulverizing chamber, the graphite and talcum powder peeled off output with the gases, obtain graphene film.Continuous, the large-scale production number of plies is realized to be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited; and yield is high, cost is low; it is pollution-free; thickness is met in rubber reinforcement, plastics enhancing, anticorrosion with coat, lubrication, the use requirement of sewage treatment area, is conducive to promoting the large-scale application of graphene.
Description
Technical field
The present invention relates to grapheme material field, and in particular to the preparation method of graphene film, more particularly to a kind of profit
With the method for preparing graphene microchip to spray formula airslide disintegrating mill.
Background technology
Graphene is the another Novel Carbon Nanomaterials being found after CNT, and its appearance makes the crystal knot of carbon
The integral framework including fullerene, CNT, graphene, graphite and diamond has been configured to, has been established from zero to three
The carbon normal form of dimension.Because graphene possesses excellent electricity, mechanics, optical property so that the preparation technology of graphene always with
To receive much concern, the main technique that graphene is prepared at present is to take vapour deposition process, is decomposed at high temperature using gaseous carbon source
The catalytic growth on matrix surface prepares graphene afterwards, and this method prepares high-quality and large area single-layer graphene
Important method.But its working condition is more harsh, power consumption is big, and cost is high.Moreover, directly using gaseous carbon sources largely
Add the danger of production.And another method for using graphite oxide reducing process to prepare graphene, mainly by graphite
Strong oxdiative processing is carried out, obtains after graphite oxide, then stripping is carried out to it preparing graphene oxide, reduction treatment is eventually passed and obtains
To graphene；But it is due to that the preparation method can destroy in graphene-structured, and preparation process that energy consumption is big, efficiency is low, cost
High and pollution environment, it is difficult to promote.
Chinese invention patent application number 201310097659.9 discloses the preparation method of graphene, including：By graphene
Presoma and amine compound are well mixed, and ball milling obtains well mixed graphene for 8~20 hours and mixed with amine compound
Graphite presoma is peeled off using amine compound in powder, wherein ball milling and obtains graphene, the graphite presoma and amido
The mass ratio of compound is 1：（1~10）；, will be aminated by the graphene and amine compound mixed-powder dispersion solvent
Compound dissolves；Filtering, graphene wet-milling is obtained using solvent washing filter cake；And the graphene wet-milling is placed in vacuum done
In 60~120 DEG C in dry case, dry 5~12 hours, graphene dry powder is made.The preparation method technique of the invention is simple, process
It is easy to control, but the graphene quality prepared is uneven, it is difficult to ensure that repeated.
Chinese invention patent application number 201410286173.4 discloses a kind of preparation method of graphene, and it includes following
Step：（1）Graphite oxide is broken into fractionlet with the mode of mechanical shearing or ball milling；（2）Under hydrogen nitrogen or hydrogen argon atmospher, press
Hydrogen volume concentration is 1~19%, and the concentration of nitrogen or argon gas is 99~81%, and gas flow rate is 10~100mL/min, with 5~
Above-mentioned graphite oxide fractionlet is warming up to 250~500 DEG C by 35 DEG C/min heating rates, and soaking time is 5~120min, hydrogen nitrogen
Or hydrogen argon gas flows down and is down to room temperature or naturally cools to room temperature, obtains graphene.The preparation method of the invention is simple to operate, obtains
Graphene reducing degree it is higher, but prepare graphene dispersion it is poor, quality is uncontrollable.
Chinese invention patent application number 201410226056.9 is disclosed prepares graphene using air-flow crushing stripping means
The technique and device of presoma two-dimensional nano graphite powder, the invention device include air supply system, crush stripping system and gas-solid point
From system；In stripping system is crushed, the material that A return ducts, B return ducts and tedge constitute air-flow crushing stripping process is followed
Loop back path；A air entraining pipes, B air entraining pipes and C air entraining pipes constitute the air-flow crushing passage of air-flow crushing stripping process.Prepare graphite
Alkene presoma two-dimensional nano graphite powder carries graphite particle jointly using three bursts of supersonic jets, by the collision of strip jet with
Friction, realizes that high-purity crushing of graphite particle, with peeling off, continuously crushes stripping by the circulation of graphite particle, is derived from two dimension
Nano graphite powder.The invention realizes the crushing and stripping of graphite powder using the mutual collision between graphite particle with friction, obtains
High-purity two-dimensional nano graphite powder, but the preparation method low yield of the invention, product quality is uncontrollable.
Mechanical stripping method be it is a kind of can be existing frequently-used in inexpensive, the pollution-free method for preparing high-quality graphene
Mechanical-physical stripping method includes conventional ball mill, stirring ball-milling, grinding etc., but during abrading-ball grinding graphite, due to part
Apply pressure big, powerful impulsive force can make graphene produce fault of construction, the size of graphene after reduction is peeled off.Therefore, send out
A kind of bright preparation technology is simple, and production safety environmental protection, production cost is low, and yield is high, the stable graphene preparation side of product quality
Method, the application to promoting grapheme material, promotes the development of graphene industry significant.
The content of the invention
High for current graphene production cost, preparation technology is complicated, the small shortcoming of yield, the present invention propose it is a kind of it is low into
The method of this preparation graphene microchip.This method utilizes equal in 500-200 layers of distribution to the spray formula airslide disintegrating mill preparation number of plies
Even graphene microchip, the graphene microchip of preparation can be applied to the composite woods such as rubber, plastics, coating, lubricating oil, sewage disposal
In material, or as the raw material for further preparing graphene, the preparation cost of current graphene can be greatly reduced.
To solve the above problems, the present invention uses following technical scheme：
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill, it is characterised in that：First by graphite powder heat
Talcum powder and dimethyl acetamide are added in processing, heat treatment process and dispersed with stirring is carried out, then being handled by intercalator makes
Graphite powder interlayer is brittle, by the impact produced to the crushing nozzle and feed introduction that spray formula airslide disintegrating mill, shearing force, rubs
Wipe power and peel off graphite, obtain the number of plies in 50-200 layer be uniformly dispersed, good fluidity, be difficult the graphene microchip of reunion, specifically
Method is as follows：
（1）The diformazan that the talcum powder and parts by weight that the graphite powder for being 80-90 by parts by weight, parts by weight are 1-5 are 0.5-1.5
Yl acetamide is mixed, with 300-600rpm rotating speed in mixed at high speed reaction machine under the conditions of heating-up temperature is 250-300 DEG C
Dispersed with stirring 30-60min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2-3:2-3:1 is configured to intercalator, then by step
（1）Obtained mixed powder soaks more than 48h in intercalator, is filtered dry by centrifuge, is dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 3.0-4.0 MPa pressure, a feed introduction is with 2.0-2.8
MPa pressure sprays into pulverizing chamber, powder collision in the form of jet in pulverizing chamber produce the impact of high intensity, shearing force,
Frictional force, powder is in high velocity air during repeated stock, cutting rubbing, and talcum powder and graphite linings are constantly peeled off, and leads to
Cross the screening of grading room, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, reach peel off desired product from
Products export output, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene material reunited.
The graphite powder is any of crystalline flake graphite, expanded graphite, highly oriented graphite, thermal cracking graphite, and particle diameter is situated between
Between 50 microns and 500 microns.
The talcum powder is platy talc, and particle diameter is between 50 microns and 500 microns, and radius-thickness ratio is between 1:10 and 1:
Between 20.
It is described spray formula airslide disintegrating mill is included crushing nozzle, feed introduction, pulverizing chamber, grading room, hopper, lining,
Products export.Using talcum powder good fluidity, be difficult reunite characteristic, by the mixed powder of talcum powder and graphite powder in high speed gas
By graphite and talcum powder delamination in stream collision, further sorted by grading room, unqualified powder is heavy to be back to pulverizing chamber,
Peel off graphite and talcum powder is separated by products export with the gases, obtain graphene microchip.
Described pair of spray formula airslide disintegrating mill is provided with feed introduction and crushes two nozzles of nozzle, and the feed introduction is in powder
Broken room hopper side, inlet pressure 2.0-2.8MPa, inlet diameter 6-10mm, the crushing nozzle is in the powder relative with feed introduction
Broken room opposite side, inlet pressure 3.0-4.0MPa, inlet diameter 6-10mm, pressure by the inert gas generating chamber of compression, by
In setting the pressure for crushing nozzle and feed introduction to there is pressure differential, powder bumps against and moved with same direction in pulverizing chamber,
Preferably crush nozzle and crushed material is sprayed into pulverizing chamber with 3.6MPa pressure, a feed introduction is sprayed with 2.5 MPa pressure
Enter pulverizing chamber, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
In order to promote the extensive use of grapheme material, the present invention proposes a kind of method for preparing graphene microchip, the party
Method is capable of the acquisition number of plies of volume production in 50-200 layers of graphene film, stable production process, and pollution-free, and production cost is compared
Existing graphene preparation method into hundred times of reduction, the graphene microchip of preparation is not only uniformly dispersed, good fluidity, the group of being difficult
It is poly-, and have excellent mechanical strength, conduction, heat conductivility, and good lubrication, high temperature resistant and anticorrosion properties concurrently.By
Be in the thickness of the graphene microchip of preparation in the range of nanoscale, but its radial width can reach it is several to dozens of it is micro-
Graphene microchip can be applied to the composites such as rubber, plastics, coating, lubricating oil by rice, the diameter/thickness ratio with super large
In.Or as the raw material for further preparing graphene, the preparation cost of current graphene can be greatly reduced.
The present invention is a kind of using the method for preparing graphene microchip to spray formula airslide disintegrating mill, utilizes talcum powder mobility
Characteristic that is good, being difficult reunion, makes powder good fluidity during injection, is not easily blocked, and the graphene microchip prepared
Dissipate uniform, good fluidity, be difficult to reunite；Material is collided by high velocity air in spray formula airslide disintegrating mill simultaneously, is produced
Impact, shearing force, frictional force by graphite and talcum powder delamination, further sorted by grading room, using having peeled off graphite
And the high-specific surface area characteristic of talcum powder is separated with bulky grain material, unqualified powder is back to pulverizing chamber, realize it is continuous,
The large-scale production number of plies is uniformly dispersed for 50-200, good fluidity, the graphene microchip for being difficult reunion.
The present invention is not only uniformly dispersed, good fluidity, is difficult using the graphene microchip prepared to spray formula airslide disintegrating mill
Reunite, and pollution-free, yield is high, cost is low, meets in rubber reinforcement, plastics enhancing, anticorrosion with coat, lubrication, sewage disposal
Deng the requirement in field, be conducive to promoting the large-scale application of graphene.Its main performance advantage is as shown in table 1.
Table 1.
A kind of method using to spray formula airslide disintegrating mill preparation graphene microchip of the present invention, compared with prior art, its
Prominent the characteristics of and excellent effect are：
1st, using talcum powder good fluidity, be difficult the characteristic reunited, the graphene microchip of preparation is dissipated uniform, mobility
Well, it is difficult to reunite.
2nd, using the nozzle to spraying two different operating pressure of formula airslide disintegrating mill, allow powder to be collided in pulverizing chamber and peel off,
The graphene microchip that the number of plies is controllable, be evenly distributed is obtained by the sorting of grading room.
3rd, preparation method of the present invention is easily controllable, can be achieved serialization closed production, and the small, cost of input is low, without environment
Pollution, yield are high, with significant market application value.
Brief description of the drawings
To further illustrate using the method for preparing graphene microchip to spray formula airslide disintegrating mill, said by accompanying drawing
It is bright.
Accompanying drawing 1：For to spray formula airslide disintegrating mill schematic diagram.1- products exports；2- grading rooms；3- linings；4- hoppers；5- adds
Expect nozzle；6- pulverizing chambers；7- crushes nozzle.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
Various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill：
（1）The dimethyl second that the talcum powder and parts by weight that the expanded graphite powder for being 80 by parts by weight, parts by weight are 1 are 0.5
Acid amides is mixed, with 300rpm rotating speed dispersed with stirring 30- in mixed at high speed reaction machine under the conditions of heating-up temperature is 250 DEG C
60min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2:2:1 is configured to intercalator, then by step（1）
To mixed powder more than 48h is soaked in intercalator, be filtered dry by centrifuge, be dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 3.0MPa pressure, a feed introduction is sprayed with 2.0 MPa pressure
Enter pulverizing chamber, collision produces impact, shearing force, the frictional force of high intensity, powder to powder in the form of jet in pulverizing chamber
In high velocity air during repeated stock, cutting rubbing, talcum powder and graphite linings are constantly peeled off, and pass through the sieve of grading room
Choosing, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches that peel off desired product produces from products export
Go out, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
Embodiment 2
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill：
（1）The dimethyl that the talcum powder and parts by weight that the highly oriented graphite powder for being 90 by parts by weight, parts by weight are 5 are 1.5
Acetamide is mixed, with 600rpm rotating speed dispersed with stirring in mixed at high speed reaction machine under the conditions of heating-up temperature is 300 DEG C
30min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 3: 3:1 is configured to intercalator, then by step（1）
To mixed powder more than 48h is soaked in intercalator, be filtered dry by centrifuge, be dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 4.0MPa pressure, a feed introduction is sprayed with 2.8MPa pressure
Enter pulverizing chamber, collision produces impact, shearing force, the frictional force of high intensity, powder to powder in the form of jet in pulverizing chamber
In high velocity air during repeated stock, cutting rubbing, talcum powder and graphite linings are constantly peeled off, and pass through the sieve of grading room
Choosing, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches that peel off desired product produces from products export
Go out, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
Embodiment 3
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill：
（1）The dimethyl second that the talcum powder and parts by weight that the crystalline graphite powder for being 85 by parts by weight, parts by weight are 3 are 0.8
Acid amides is mixed, with 400rpm rotating speed dispersed with stirring in mixed at high speed reaction machine under the conditions of heating-up temperature is 260 DEG C
45min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2.1:2.5:1 is configured to intercalator, then by step
（1）Obtained mixed powder soaks more than 48h in intercalator, is filtered dry by centrifuge, is dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 3.6MPa pressure, a feed introduction is sprayed with 2.5 MPa pressure
Enter pulverizing chamber, collision produces impact, shearing force, the frictional force of high intensity, powder to powder in the form of jet in pulverizing chamber
In high velocity air during repeated stock, cutting rubbing, talcum powder and graphite linings are constantly peeled off, and pass through the sieve of grading room
Choosing, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches that peel off desired product produces from products export
Go out, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
Embodiment 4
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill：
（1）The dimethyl that the talcum powder and parts by weight that the thermal cracking graphite powder for being 84 by parts by weight, parts by weight are 4 are 1.2
Acetamide is mixed, with 500rpm rotating speed dispersed with stirring in mixed at high speed reaction machine under the conditions of heating-up temperature is 280 DEG C
45min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2.3:2.8:1 is configured to intercalator, then by step
（1）Obtained mixed powder soaks more than 48h in intercalator, is filtered dry by centrifuge, is dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 3.4MPa pressure, a feed introduction is sprayed with 2.6 MPa pressure
Enter pulverizing chamber, collision produces impact, shearing force, the frictional force of high intensity, powder to powder in the form of jet in pulverizing chamber
In high velocity air during repeated stock, cutting rubbing, talcum powder and graphite linings are constantly peeled off, and pass through the sieve of grading room
Choosing, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches that peel off desired product produces from products export
Go out, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
Embodiment 5
It is a kind of to utilize the method that prepared by graphene microchip to spray formula airslide disintegrating mill：
（1）The dimethyl second that the talcum powder and parts by weight that the expanded graphite powder for being 81 by parts by weight, parts by weight are 2 are 1.3
Acid amides is mixed, with 360rpm rotating speed dispersed with stirring in mixed at high speed reaction machine under the conditions of heating-up temperature is 260 DEG C
35min, obtains mixed powder；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2:2.5:1 is configured to intercalator, then by step（1）
Obtained mixed powder soaks more than 48h in intercalator, is filtered dry by centrifuge, is dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding to spray formula airslide disintegrating mill in spray formula airslide disintegrating mill, setting
Two nozzles are put, nozzle is crushed for one and pulverizing chamber is sprayed into 3.9 MPa pressure, a feed introduction is with 2.2 MPa pressure
Pulverizing chamber is sprayed into, collision produces impact, shearing force, the frictional force of high intensity, powder to powder in the form of jet in pulverizing chamber
Material is in high velocity air during repeated stock, cutting rubbing, and talcum powder and graphite linings are constantly peeled off, and pass through grading room
Screening, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches that peel off desired product produces from products export
Go out, obtain the number of plies in 50-200 layers be uniformly dispersed, good fluidity, be difficult the graphene microchip reunited.
Claims (5)
1. a kind of utilize the method for preparing graphene microchip to spray formula airslide disintegrating mill, it is characterised in that：First by graphite powder heat
Manage and disperse, then interlayer is brittle, by spraying the crushing nozzle of formula airslide disintegrating mill and the impact of feed introduction generation, cutting
Shear force, frictional force peel off graphite, obtain the number of plies micro- in 50-200 layer be uniformly dispersed, good fluidity, the graphene for being difficult reunion
Piece, specific method is as follows：
（1）Talcum powder and parts by weight that the graphite powder for being 80-90 by parts by weight, parts by weight are 1-5 are 0 .5-1 .5 dimethyl
Acetamide is mixed under the conditions of heating-up temperature is 250-300 DEG C, stirred with 300-600rpm rotating speed in mixed at high speed reaction machine
Scattered 30-60min is mixed, mixed powder is obtained；Wherein described talcum powder is platy talc, and particle diameter is micro- between 50 microns and 500
Between rice, radius-thickness ratio is between 1:10 and 1:Between 20；
（2）By iron chloride, potassium chloride, polyethylene glycol with mass ratio 2-3:2-3:1 is configured to intercalator, then by step（1）
To mixed powder more than 48h is soaked in intercalator, be filtered dry by centrifuge, be dried to obtain pre- intercalation powder；
（3）By step（2）Obtained pre- intercalation powder feeding is in spray formula airslide disintegrating mill, two are set to spray formula airslide disintegrating mill
Individual nozzle, crushes nozzle for one and sprays into pulverizing chamber with 3.0-4.0 MPa pressure, a feed introduction is with 2.0-2.8 MPa's
Pressure sprays into pulverizing chamber, and powder collision in the form of jet in pulverizing chamber produces the impact, shearing force, friction of high intensity
Power, powder is in high velocity air during repeated stock, cutting rubbing, and talcum powder and graphite linings are constantly peeled off, by dividing
The screening of level room, the pulverizing chamber that unqualified bulky grain powder is back to continues to collide to peel off, and reaches and peels off desired product from product
Export output, obtain the number of plies in 50-200 layer be uniformly dispersed, good fluidity, be difficult the graphene microchip of reunion.
2. a kind of using the method for preparing graphene microchip to spray formula airslide disintegrating mill according to claim 1, its feature exists
In：Graphite powder is any of crystalline flake graphite, expanded graphite, highly oriented graphite, thermal cracking graphite, particle diameter between 50 microns and
Between 500 microns.
3. a kind of using the method for preparing graphene microchip to spray formula airslide disintegrating mill according to claim 1, its feature exists
In：Described goes out to spray formula airslide disintegrating mill including crushing nozzle, feed introduction, pulverizing chamber, grading room, hopper, lining, product
Mouthful.
4. a kind of using the method for preparing graphene microchip to spray formula airslide disintegrating mill according to claim 1, its feature exists
In：Described is provided with feed introduction and crushing two nozzles of nozzle to spray formula airslide disintegrating mill, and the feed introduction is being crushed
Room hopper side, inlet pressure 2.0-2.8MPa, inlet diameter 6-10mm, the crushing nozzle is in the powder relative with feed introduction
Broken room opposite side, inlet pressure 3.0-4.0MPa, inlet diameter 6-10mm, pressure is produced by the inert gas of compression.
5. a kind of using the method for preparing graphene microchip to spray formula airslide disintegrating mill according to claim 1, its feature exists
In：Graphene microchip prepared by methods described is met in rubber reinforcement, plastics enhancing, anticorrosion with coat, lubrication, sewage treatment area
Application.
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| CN106006624B (en) * | 2016-07-01 | 2018-08-10 | 成都新柯力化工科技有限公司 | A kind of dry state air-flow stripping prepares the method and grapheme material of grapheme material |
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| CN111170345A (en) * | 2020-01-15 | 2020-05-19 | 珠海琴晟新材料有限公司 | preparation method of nano α phase aluminum oxide material |
| CN115347159A (en) * | 2022-07-15 | 2022-11-15 | 广东邦普循环科技有限公司 | Modified cathode material-based crushing method, modified cathode material and preparation method thereof |
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| US7105108B2 (en) * | 2002-08-15 | 2006-09-12 | Advanced Energy Technology Inc. | Graphite intercalation and exfoliation process |
| US8679290B2 (en) * | 2010-10-28 | 2014-03-25 | Empire Technology Development Llc | Exfoliation of graphene by multilayer coextrusion |
| CN103922331A (en) * | 2014-04-28 | 2014-07-16 | 南京新月材料科技有限公司 | Method of preparing graphene powder |
| CN103977870B (en) * | 2014-05-26 | 2016-03-30 | 北京航空航天大学 | Air-flow crushing stripping technology is adopted to prepare the method for Graphene presoma two-dimensional nano graphite powder |
| CN104386680B (en) * | 2014-11-14 | 2016-05-11 | 上海史墨希新材料科技有限公司 | The method of large stretch of Graphene is prepared in scale |
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