CN109867280A - Graphene powder manufacture system and preparation method - Google Patents

Abstract

A kind of graphene powder manufacture system, for a graphite raw material is separated the graphene powder lower than ten layers of molecular structure, manufacture system includes: to enter material unit for input graphite raw material；Rolling unit, including at least one along the rolling wheel pivoted, and one corresponding rolling wheel auxiliary member, angle is formed between rolling wheel and auxiliary member, for receiving from the graphite raw material for entering material unit, and rolling wheel is pivoted with respect to auxiliary member with differential edge, is applied pressure and frictional force whereby in graphite raw material and is formed graphene forerunner's intermediate product；Supply unit, for accepting graphene forerunner intermediate product；And the impulse unit of at least one enable gas molecule makes at least partly graphene forerunner intermediate product be separated into graphene powder whereby for generating kinetic energy gas molecule impulse graphene forerunner's intermediate product.

Description

Graphene powder manufacture system and preparation method

Technical field

A kind of graphene powder manufacture system and the manufacturing method using the manufacture system.

Background technique

Graphite is mainly made of multilayer planar atomic structure of carbon, and all morals are relied between the atomic structure of carbon of multilayer planar Wa Er active force (Van Der Waals Force), which combines, to be formed, and passing solid-state physics scholar advocates tow -dimensions atom from scientific principle It crystallizes unstable, it is believed that tow -dimensions atom crystallization can not have general environment.However, just in 2004 by Novoselov and The multidigits physicist such as Kostya removes graphite using adhesive tape repeatedly, and a small amount of single layer two-dimensional structure is separated from natural graphite Graphene (Single-layer graphene), and this is published in " field effect of carbon atom film " (Electric Field Effect in Atomically Thin Carbon Films) it publishes in " science " periodical in October, 2004 (American Association for the Advancement of Science), and in the acquisition Nobel Prize in 2010. So, based on above-mentioned atomic structure of carbon there is Fan Dewaer active force to combine between layers, Yao Liyong adhesive tape is removed repeatedly The graphene-structured of single layer is extremely difficult out, but also the studies above is although shocking, but tape method can not be used to largely Produce graphene.

The two-dimensional structure graphite material generally by graphite linings lower than ten layers of single-layer or multi-layer below is known as graphene at present, Wherein, the graphene of single layer has surface hardness about 130GPa, pliability (mechanical flexibility) about Young system Number 1TPa, carrier transport factor (Carrier mobility) about 15000cm2/ (Vs), high-termal conductivity (3000w/mk) and The characteristics such as low resistance (10-6 Ω cm), have suitable difference with the blocky graphite understood in the past in many aspects.It is above-mentioned to make us Surprised characteristic attracts the researcher in each field, and the stone of better quality is constantly pursued in numerous and confused investment research and development, application and popularization Black alkene.Mechanical stripping method common at present, though all optimal graphene of crystallization and electric conductivity can be produced, however yield is extremely low It is applicable only to laboratory and carries out a small amount of verification test, be not appropriate for the scheme as mass production.

Numerous physical characteristics of graphene make us being pleasantly surprised, but unfortunately, the physical characteristic of graphene is but by the number of plies and surface The influences such as functional group are very huge, how to generate the low layer number graphene of stability of characteristics, in response to the subsequent possible extensive use occurred, Production academics is allowed to be fascinated for it.Currently, obtaining a large amount of and stability of characteristics graphite to ask the influence for abolishing Fan Dewaer active force Alkene, the mode being most often discussed are chemical stripping method.

Chemical stripping method is to allow solvent molecule to penetrate between graphite linings by the solvent compatible with graphite is mixed, use and subtract Weak Fan Dewaer active force therebetween, then provide energy with supersonic speed or ultrasonic and break the connection of graphite layers, and mixed There is the suspension liquid of graphene powder；However, when isolating graphene powder from suspension liquid, the graphite with functional group Alkene mealy structure can attract each other and reassemble, and allow such as ten layers or less graphene powder relative rarities obtained.According to Experimental data is shown, using chemical stripping method, the graphene powder that one liter of solvent is typically only capable to obtain about 0.1 g is suspended in In solvent, by powder and solvent separation process, also the number of plies of product can be made to be unevenly distributed, it be by further centrifugation The considerations of purification step can just isolate graphene powder similar in level each other, polymerization losses rate is added, it can be found that such Method is simultaneously uneconomical.

It further analyzes, the double bond (Double being often used in chemical stripping method on the concentrated sulfuric acid and potassinm permanganate and graphite Bond fierce oxidation reaction) is generated, expands interlamellar spacing after making graphite oxidation, using reduces the Fan Dewa that each interlayer attracts each other That active force, makes the surface of part graphite linings with carboxyl (- CO2H), hydroxyl (- OH) and epoxy group, recycles these oxygen-containing officials Energy group (Oxygen functional groups) and hydrone can increase in graphene suspension body because of hydrogen bond attraction Graphene powder amount；But when using this graphite oxide as predecessor, it is also necessary to by the carboxyl at graphene predecessor edge And its oxide removal, graphene powder made of reduction could be applied.

And this reduction process is except needing to wash and filter repeatedly, until remove non-carbon impurity, then through ultrasonic by oxygen Graphite alkene is scattered in solution, and hydrazine (hydrazine, N2H4, H4N2, H2N-NH2) or amine (amine, NH3) is then added, And maintain a period of time in specific high-temperature, the graphene particle of macroscopic could be found in the solution；Then through precipitating, mistake Graphene powder is obtained after filter and drying.Above-mentioned reduction process is in addition to fixed step is complicated, also further due to reduction process It is consumed.In particular, because the carbon structure in graphite linings once by non-uniform vigorous oxidation, allows the graphene powder after reduction The still remaining defect sturcture in part remains functional group, and defect sturcture can allow the graphene characteristic obtained by oxidation-reduction process Deterioration；Though remaining has the graphene of functional group to have the characteristics such as good conduction, the functional group of remaining can not be uniformly distributed, make Output graphene characteristic it is unstable and be difficult to practical application.

It in No. 201610918117.7 patent of invention of CN, just discloses and uses chemical stripping method, adopt intercalator by for a long time Impregnate graphite, allow intercalator penetrate into graphite layers generate intercalated graphite, then by intercalated graphite under high temperature with sodium chloride and chlorination Magnesium melting is exactly graphene predecessor after its cooling, this is similar to aforementioned oxidation method, reduces graphite layers Fan Dewaer whereby Active force, then comminuted steel shot and graphene predecessor are mixed, it is removed, is finally adsorbed again with electromagnet mixed with air-flow crushing mode Comminuted steel shot is recycled one by one, separates graphene powder with comminuted steel shot by comminuted steel shot.However, the aforementioned invention process is such as known, stone is not only allowed Black atomic structure is contaminated, it is difficult to ensure the peculiar characteristic of graphene；Row separation again after this kind of mixed foreign matter, though increase friction Improve removing rate, may also remain comminuted steel shot in powder, dual pollution make painstakingly gained probably be difficult for using.

In terms of again, " prepared using air-flow crushing stripping technology disclosed by No. 201410226056.9 patent of invention of CN In the method for graphene presoma two-dimensional nano graphite powder ", graphene presoma is generated by circulating current method separation graphite raw material Part obtains two-dimensional nano graphite powder.Narration disclosed by the above-mentioned invention is quoted from " by the crushing and removing of circulation, by 8 After hour, so that there is the thickness of 50%~90% graphite powder in 20~80 nanometers in two-dimensional nano sheet graphite powder ".According to list Only 0.334 nanometer of conversion, the graphene of 20 to 80 nanometers of the obtained thickness of the case, the number of plies after removing are about layer graphene thickness 59 layers to 250 layers, then after adding coupling agent according to the case embodiment, make powdered graphite grain thickness about at 73 nanometers, hence it is evident that super The thickness within above-mentioned 10 layers is crossed, is only capable of referred to as powdered graphite rather than the graphene generally assert.That is, it is taken off according to the invention Being made graphite raw material collision using air-flow and rubbed and then removed of dew, can not prepare qualified graphene in fact.

In addition, No. 20160030508.5 invention patent application case as Shanghai Communications University is proposed is " a kind of to prepare stone It is disclosed in the method for black alkene ", graphite layers can be inserted into using the supercritical fluid carbon dioxide of high pressure as intercalation object, with Afterwards pressure release and allow carbon dioxide volume increase, cause the structure of graphite linings and layer to be totally disrupted, obtain pure graphene.So And due to treatment process each time, will by gas boosting in chamber to 8 to 60M Pa, about when 80 to 600 times of atmospheric pressure, and The a collection of graphene of every processing, will pass through the process for being once depressurized to an atmospheric pressure, handle repeatedly, not only expend energy very It is huge, and since treatment process pressure is too high, chamber volume is inevitable very small, and yield is very low, does not meet business operating volume production completely It uses.

For volume production level can be reached, such as No. 103140604 patent application case of TaiWan, China " manufacturer of flake graphite alkene Method " discloses, and shears gas using using caused by air-flow interface of forward and reverse air-flow between first flow path and second flow path Stream bestows the graphite bulk, and the shear flow has a wind speed between 1m/s to 200m/s, but according to the case description, Its so-called flake graphite alkene obtained, range cover from 1~3000000 layer, such extensive range, low compared to the general number of plies It is defined as the standard of graphene in 10 layers, is only capable of calling the powdered graphite that its product is removing, and the big portion of such powdered graphite Divide the characteristic for not having graphene, can not smoothly obtain the graphene of single layer to ten layers of range.

Based on aforementioned, how under conditions of not polluting natural graphite, make the Fan Dewaer effect of graphite between layers Power weakens, and smoothly to remove graphite linings, and smoothly obtains the graphene of single layer to ten layers or so, and do not allow graphene-structured to produce Raw a large amount of uneven defects not will lead to especially a large amount of in the fabrication process with ensuring graphene quality and physicochemical characteristics Environmental pollution, the purpose exactly of the invention to be reached.

Summary of the invention

One of present invention purpose is to provide a kind of graphene manufacture system, destroys Fan Dewa by rolling graphite raw material That power, and graphene powder is made through gas molecule impulse.

A further object of the present invention is to provide a kind of graphene manufacture system, by applying pressure and frictional force in stone Black raw material separates graphite linings, and prepares graphene powder with complete physics processing procedure, avoids environmental pollution whereby.

Another object of the present invention is to provide a kind of graphene manufacture system, makes to be staggered between graphite linings by rolling, then Graphene powder is obtained through gas impulse, the characteristic of product is kept to meet expected and is evenly distributed.

Another object again of the invention, is to provide a kind of graphene manufacturing method, destroys graphite layers using rolling method Fan Dewaerli, then isolate graphene powder with kinetic energy gas molecule impulse avoids chemical contamination and to possess product equal Even good characteristic.

In order to achieve the above objectives, the present invention provides a kind of graphene powder manufacture system, including one for inputting graphite raw material Enter material unit；One rolling unit, the auxiliary of the rolling wheel pivoted including at least one along one and a corresponding aforementioned rolling wheel Part, aforementioned rolling wheel are pivoted with a differential along above-mentioned with respect to the auxiliary member, for receive from it is above-mentioned enter material unit it is above-mentioned Graphite raw material, and apply pressure and frictional force and form graphene forerunner's intermediate product in above-mentioned graphite raw material；One supply unit, For accepting above-mentioned graphene forerunner intermediate product；And the impulse unit of at least one enable gas molecule, for generating kinetic energy gas The above-mentioned graphene forerunner intermediate product of body molecule impulse, makes at least partly graphene forerunner intermediate product be separated into stone whereby Black alkene powder.

And a kind of graphene powder preparation method is provided by the present invention, above-mentioned graphene powder manufacture system is provided by a graphite Raw material separates the graphene powder lower than ten layers of molecular structure, and foregoing graphites alkene powder preparation method includes the following steps: above-mentioned rumble Pinch roller is rotated with a differential relative to above-mentioned auxiliary member along above-mentioned pivot, for applying pressure and frictional force in above-mentioned graphite raw material, mistake The graphite linings of graphite raw material are opened, and form graphene forerunner's intermediate product.It is produced by above-mentioned impulse unit enable gas molecule Raw kinetic energy gas molecule, and with the above-mentioned graphene forerunner intermediate product of above-mentioned kinetic energy gas molecule impulse, so that at least portion Graphene forerunner intermediate product is divided to be separated into graphene powder.

Disclosed graphene manufacture system and preparation method through the invention apply pressure with above-mentioned rolling wheel and above-mentioned auxiliary member Power is in graphite raw material, and the rolling wheel is rotated with differential relative to above-mentioned auxiliary member, for applying pressure and frictional force in above-mentioned graphite Raw material, the graphite linings for the graphite raw material that is staggered, and differential when rotating, break rolling wheel in graphite raw material surfaces increase friction power The combination of bad graphite Fan Dewaerli between layers, allows the graphite linings of graphite raw material to be staggered, then passes through above-mentioned kinetic energy Gas molecule impulse isolates graphene powder with this, avoids the environmental pollution of previous chemical substance separation whereby, while also keeping away Exempt from functional group caused by chemical substance, therefore the characteristic of graphene will not change, function machine will not be caused to be unevenly distributed It is even, it will not more be attracted one another because of function machine, graphene is allowed largely to be combined into the graphite of more layers once again, a large amount of with regard to this acquirement, The graphene powder of general environment and low layer number can be stored in.

Detailed description of the invention

Fig. 1 is the schematic diagram of the first preferred embodiment of graphene powder manufacture system of the present invention.

Fig. 2 is Fig. 1 the first preferred embodiment flow chart.

Fig. 3 is the impulse cell schematics of the second preferred embodiment of graphene powder manufacture system of the present invention.

Fig. 4 is Fig. 3 the second preferred embodiment impulse cell schematics.

Fig. 5 is Fig. 3 the second preferred embodiment impulse cell schematics.

Fig. 6 is the schematic diagram of graphene powder manufacture system third preferred embodiment of the present invention.

Fig. 7 is Fig. 6 third preferred embodiment flow chart.

Symbol description

1 hand-held hopper 1 " of hopper

Rolling unit 2, pivot 202

20,20 " auxiliary member 22,22 " of rolling wheel

24,24 " transfer passage 3 of angle

3 " collector 30 " of conveyer belt

Isolate and purify 32 " impulse unit 4,4 ', 4 " of device

Blower fan 40

42 turntable 43 of blower drum

44 ', 44 " feed inlet 440 ' of turbocharger

441 ' turbine rotor blade 442 ' of air inlet

4420 ' blade tip 4421 ' of blade root

443 ' tonifying Qi hole 444 ' of pivot air supply passage

It cracks chamber 445 ' and cracks chamber inner wall 4450 '

It is pressurized split cavity 446 ' and is pressurized split cavity inner wall 4460 '

Impulse opening 447 '

50,52,54,56 first embodiment step

50 ", 52 ", 54 ", 56 ", 58 " 3rd embodiment steps

Specific embodiment

About aforementioned and other technology contents, feature and effect of the invention, in the preferable reality of following collocation Figure of description The detailed description of example is applied, can be clearly appeared from；Except this, in each embodiment, identical component is indicated with similar label.

The first preferred embodiment of graphene manufacture system of the present invention is as shown in Figures 1 and 2, and manufacture system includes that an example is released Enter material unit, 2, supply units of a rolling unit and an impulse unit 4 for hopper 1.First in step 50, by stone In black raw material merging hopper 1；Rolling unit 2 then includes the rolling wheel 20 and the corresponding rolling rotated along pivot 202 The auxiliary member 22 of wheel 20 receives graphite raw material by being formed by angle 24 between the rolling wheel 20 and the auxiliary member 22.

It as shown by arrows due to rolling wheel 20, is to be rotated along 202 constant speed degree of pivot, and auxiliary member 22 is also in this example One column structure but do not have any power, therefore is stationary state when starting.Work as graphite raw material as described in step 52 again When by the angle 24, rolling wheel 20 rotates driving graphite raw material on one side and moves downwards, but another aspect graphite raw material is squeezing through When between rolling wheel 20 and auxiliary member 22, but because of the speed difference of the two, band actuation assistance 22 is reversely rotated, at this time in rolling wheel 20 To graphite raw material and graphite raw material between auxiliary member 22, a large amount of rubbing action just will form.Especially because rolling wheel 20 Gap between auxiliary member 22 is rather narrow, while increasing the pressure to graphite raw material, and graphite raw material is simultaneously by rolling wheel 20 And frictional force caused by 22 differential speed rotation of auxiliary member, and the pressure effect of clipping each other, on the one hand it is crushed the stone of large area Layer of ink, allowing script by Fan Dewaerli in terms of another, the firm graphite combined between layers open by the changing of the relative positions, and forms the stone ruptured Black alkene forerunner intermediate product.

Certainly know the art person to be readily appreciated that ask increase to exert pressure and generate frictional force, it can be separately or concurrently It is imitated in bump on rolling wheel and auxiliary member, is arranged or applies stressed effect using composite as increase or increases frictional force The means of fruit neither influence implementation of the invention；And auxiliary member either adopts fixed structure or is driven in rolling wheel, is all To make the two generate differential, allow graphite raw material because being formed graphene forerunner intermediate product by pressure and frictional force.

On the one hand, interlayer is wrong due to the rolling process of step 52 between layers for the graphite of graphene forerunner intermediate product It is dynamic, Fan Dewaerli thus weaken or diminish after, be able to graphene forerunner intermediate product either overall dimensions or thickness all Substantially reduce, partial transposition separates between graphite linings, therefore is interpreted as the conveying list an of transfer passage 3 through example in step 54 Member accepts graphene forerunner's intermediate product, and 3 other end of transfer passage is then connected to impulse unit 4, and impulse unit 4 is in this example By taking a blower device as an example, on the one hand with blower fan 40 pressurizes to dry air and dry air is forced to advance, another aspect air blast 42 constriction bore of machine shell, so that the air-flow for hitting graphene forerunner intermediate product is accelerated to close to velocity of sound, then by turntable 43 Increase flow perturbation, above-mentioned graphene forerunner intermediate product advances in above-mentioned transfer passage 3, in step 56 by impulse unit The 4 dry air molecule impulses sent out, graphene forerunner intermediate product is because of swiftly flowing gas molecule collision and friction, portion Divide graphene forerunner intermediate product that can be separated into the graphene powder that thickness is lower than 3nm (about 9 layers), because of graphene powder weight It is lighter than graphene forerunner's intermediate product, discharge port can be taken to by swiftly flowing gas molecule.

Being familiar with the art personage can be readily appreciated that, although in this example enter material unit hopper for, impulse list First example is interpreted as blower device, and conveying device is then by taking transfer passage as an example, but above-mentioned narration is neither limitation of the present invention, pan feeding Unit can be replaced by combination easily or be located away from the material bin of manufacture system, band；The impulse unit of enable gas molecule can be easily It is replaced by any flow accelerator, such as with the blower device of turbocharger, is made by the turbo blade in turbocharger At air-flow, and taking back tonifying Qi hole again with blower device discharge air-flow makes to increase pressure to gas, makes former blower device gas flow rate Moment multiplication, allows and forms shearing action and intermolecular speed difference between the air-flow and fixture of generation, cause the mutual collision of molecule It hits, destroys Fan Dewaerli, graphene forerunner intermediate product is separated because of swiftly flowing gas molecule collision and friction；It is defeated Send unit that can be replaced by common closed transportion band easily, above-mentioned replacement is without for fear of implementation of the invention.

Described in leading portion, which is able to be changed or equivalent hyperphoric, preferable in this example second to be convenient to understand It is the blower device with turbocharger that impulse unit 4 ' is released example by embodiment, and please also refer to Fig. 3, Fig. 4 and figure 5, in this example impulse unit 4 ' not in the first preferred embodiment, in addition to impulse unit 4 ' has turbocharger 44 ', and the turbine There is a feed inlet 440 ' to enter cracking chamber 445 ', at least one set for receiving graphene forerunner intermediate product in booster 44 ' Along turbine rotor blade 442 ' and at least one air inlet 441 ' that pivot air supply passage 443 ' rotates, and more it is bordering on turbine 4420 ' the linear velocity of blade root (Linear Velocity) of rotor blade 442 ' is smaller, and is bordering on cracking 4450 ' side of chamber inner wall 4421 ' the linear velocity of blade tip of the turbine rotor blade 442 ' of edge is bigger, when this group of 442 ' high speed rotation of turbine rotor blade, in leaf Sharp 4421 ' places will generate ultrasonic wind speed (being higher than 300m/s).

Air molecule as fluid has certain viscosity, the air molecule speed of contact cracking chamber inner wall 4450 ' Degree must be close to zero, and the air molecule speed close to 442 ' edge of turbine rotor blade is then supersonic speed, so that air point Serious speed difference and laminar flow are generated between son, this makes that the graphene of operating will be carried by air molecule by cracking chamber 445 ' Forerunner's intermediate product, because of the formed shear action of serious speed difference, so that a part therein, by strong shearing impact Removing becomes graphene powder.Since such effect is according to speed difference and to fix probability, in cracking chamber Simply by the presence of sufficient graphene forerunner intermediate product, will constantly there be certain proportion to be impacted and be decomposed into the different stone of thickness Ink powder end or graphene.

It holds as the turbine rotor blade 442 ' in preceding cleavage chamber 445 ' is one or formed with multiple layers of vanes one group Turbine rotor blade 442 ', and then radius is shorter closer to the upper end opening turbine rotor blade 442 ' of cracking chamber 445 ', Otherwise more remote 442 ' radius of then turbine rotor blade is longer, and cracking chamber inner wall 4450 ' can be according to turbine rotor blade 442 ' Half radial pivot air supply passage 443 ' is tapered, allows cracking chamber inner wall 4450 ' and blade tip 4421 ' to maintain a distance, and splitting Solution chamber inner wall 4450 ' can more be provided with bump, groove, to form the shearing work for enhancing removing graphene forerunner intermediate product Firmly, one group of blade as stator more is set in 443 ' outer of pivot air supply passage.

Furthermore under 442 ' high-speed rotation of turbine rotor blade, the winged petiole shape of turbine rotor blade 442 ' can allow cracking Gas particle flows towards a direction in chamber 445 ', after entering gas particle by air inlet 441 ', it then follows bernoulli principle, gradually Flowed from pivot air supply passage 443 ' to cracking chamber inner wall 4450 ', and the number of plies it is high powdered graphite mass particle it is larger and move Dynamic relatively slow, the low graphene powder quality of the number of plies is small and mobile very fast, and especially 4420 ' place's flow velocity of blade root is lower than 4421 ' place of blade tip, It causes that 4421 ' place's gas pressure of blade tip is low and flows back to 4420 ' place of blade root, under multiple disturbance, graphene powder will be made not only It is easy to mobile toward 4420 ' place of blade root, can be also carried by turbulent flow and fly upward upwards, be detached from cracking chamber 445 '；Relatively, the number of plies is high Powdered graphite and graphene forerunner's intermediate product it is heavier, then persistently removed by shear force.

At this point, lighter graphene powder is upwardly into impulse unit 4 ' with air-flow produced by turbine rotor blade 442 ' Pressurization split cavity 446 ', connect in this example pressurization split cavity 446 ' with the air-flow that the blower device of impulse unit 4 ' is discharged Supercharging effect is caused to tonifying Qi hole 444 ', which forms spiral air flow in pressurization split cavity 446 ', makes small part Not yet graphene forerunner intermediate product of the removing as graphene powder, not meeting graphene standard as thickness is higher than ten layers Graphene forerunner's intermediate product, graphene powder can be overweighted by using non-compliant graphite powder weight, will by spiral air flow Non-compliant graphene takes to pressurization split cavity inner wall 4460 ' by gravity, and as gravity traction itself is fallen again Enter to crack and be removed again in chamber 445 '.

By the upward impulse opening 447 ' of impulse unit 4 ', it is logical that impulse opening 447 ' corresponds to pivot tonifying Qi Road 443 ', and the opening that extends internally allows graphene by 443 ' tonifying Qi air-flow institute of pivot air supply passage lower than aforementioned tonifying Qi hole 444 ' It influences, by the graphene powder for being lighter than graphene forerunner's intermediate product as the air-flow of pivot air supply passage 443 ' is sent out.

Due to not increasing other additives in graphite from rolling, impulse removing or even collection process, making to utilize this hair The graphene powder that bright embodiment obtains influences graphene intrinsic propesties by chemistry or other substances, and being conducive to will The range of graphene application significantly extends, and particular device or specific program must be had by taking out graphene and less will receive Just applicable inflexible limit, so that graphene application technology door and derived product development cost are greatly reduced.

Third preferred embodiment of the present invention is as shown in FIG. 6 and 7, to consider that the collection of graphene manufacture system is allowed to operate more For simplicity, supply unit is more provided with a collector 30 " in 4 " downstream of impulse unit and one isolates and purifies device 32 ", and It is conveyer belt 3 " that supply unit in this example, which releases example, and entering material unit then to release example is hand-held hopper 1 ".

Therefore graphite raw material in this example is to be put to enter conveyer belt 3 " with hand-held hopper 1 " by site operation personnel, According to step 50 " when graphite raw material is as conveyer belt 3 " is by rolling wheel 20 ", then through the rolling wheel 20 " and the auxiliary member 22 " Being formed by angle 24 " to apply the auxiliary member 22 " of pressure and frictional force in graphite raw material, this example is a fixing piece, therefore When rolling wheel 20 " is driven rotation, the two can be in step 52 " frictional force is applied in graphite raw material with opposite differential, friction is simultaneously Extruded anisotropic graphite raw material and form graphene forerunner's intermediate product.

Then in step 54 " when, graphene forerunner intermediate product is moved to 4 " place of impulse unit, Yu Ben with conveyer belt 3 " In example, the impulse unit 4 " of enable gas molecule is that one group of ultrasound scanner head by high-frequency oscillation allows air molecule to generate Frequency is higher than the reciprocating vibration of acoustical range and becomes high-energy gas molecules, what therefore energy was passed through with the shock of supersonic kenel Graphene forerunner's intermediate product, the collision and rate of such high energy gases molecule allow graphene forerunner's intermediate product layer and layer Between further separate, certain each layer may also further fragmentation.Then in step 56 ", it is collected with collector 30 " through overshooting Swash 4 " impulse of unit separation at least partly graphene powder and thickness be still higher than graphene by among impulse graphene forerunner Product, and it is subject to screen separation by isolating and purifying device 32 ".

Finally in step 58 " when, thickness is not met to graphene forerunner's intermediate product of graphene standard higher than ten layers, It distinguishes, will produce among the graphene forerunner for not meeting graphene standard through turbocharger 44 " by device 32 " is isolated and purified Object sends conveyer belt 3 " back to again, repeatedly by ultrasonic vibrate and persistently separate, due to rolling, ultrasonic impulse, collect and During isolating and purifying, it is not all mixed into any chemical treating process, so that the graphene powder generated is characteristically complete Uniformly, and environmental pollution is greatly reduced, hence it is evident that improve the missing of the prior art.Certainly, being familiar with the art personage can be light It is readily apparent, even if by collector and isolating and purifying the outside that device is respectively arranged at impulse unit, it will not also influence the present invention Implement.

Described previously is only highly preferred embodiment of the present invention, and using absolutely not is limitation practical range of the invention.All is according to this Equivalent changes and modifications carried out by the content of invention claims and specification all should be the scope that the invention patent covers.

Claims (10)

1. a kind of graphene powder manufacture system, which is characterized in that for a graphite raw material is separated lower than ten layers molecular structure Graphene powder, which includes:

One enters material unit for the above-mentioned graphite raw material of input；

One rolling unit, the auxiliary member of the rolling wheel pivoted including at least one along one and a corresponding aforementioned rolling wheel are aforementioned Rolling wheel is pivoted with a differential along above-mentioned with respect to the auxiliary member, for receive from it is above-mentioned enter material unit above-mentioned graphite it is former Material, and pressure and frictional force are applied to above-mentioned graphite raw material and form graphene forerunner's intermediate product；

One supply unit, for accepting above-mentioned graphene forerunner intermediate product；And

The impulse unit of at least one enable gas molecule, for generating among the above-mentioned graphene forerunner of kinetic energy gas molecule impulse Product makes at least partly graphene forerunner intermediate product be separated into graphene powder whereby.

2. graphene powder manufacture system as described in claim 1, which is characterized in that wherein above-mentioned impulse unit is a kind of gas Flow accelerator.

3. graphene powder manufacture system as claimed in claim 2, which is characterized in that wherein said flow accelerator is one A blower device.

4. graphene powder manufacture system as claimed in claim 3, which is characterized in that wherein above-mentioned blower device includes a tool Turbocharger.

5. graphene powder manufacture system as claimed in claim 2, which is characterized in that wherein said flow accelerator is one Group ultrasound scanner head.

6. graphene powder manufacture system as described in claim 1, which is characterized in that wherein above-mentioned supply unit is a conveying Band.

7. graphene powder manufacture system as described in claim 1, which is characterized in that wherein above-mentioned supply unit is a conveying Channel.

8. such as graphene powder manufacture system described in claim 5 or 6, which is characterized in that wherein above-mentioned supply unit more wraps The collector positioned at above-mentioned impulse unit downstream is included, is mixed in the above-mentioned graphene forerunner of above-mentioned graphene powder for collecting Between product；And one isolate and purify device, for by above-mentioned graphene powder by sieving in above-mentioned graphene forerunner intermediate product point From.

9. a kind of graphene powder preparation method, which is characterized in that for a graphite raw material is separated the stone lower than ten layers of molecular structure Black alkene powder and the graphene manufacture system include one entering material unit, a rolling unit, a supply unit and at least one punching Swash unit, it is aforementioned enter material unit supply into above-mentioned graphite raw material, aforementioned rolling unit include an at least rolling wheel and one it is corresponding before The auxiliary member for stating rolling wheel, for receive from it is above-mentioned enter material unit above-mentioned graphite raw material, aforementioned rolling wheel be along a pivot revolve Turn；Above-mentioned graphene powder preparation method includes the following steps:

A) above-mentioned rolling wheel is rotated with a differential relative to above-mentioned auxiliary member along above-mentioned pivot, for applying pressure and frictional force in above-mentioned Graphite raw material, the graphite linings for the graphite raw material that is staggered, and form graphene forerunner's intermediate product.

B kinetic energy gas molecule) is generated by above-mentioned impulse unit enable gas molecule, and with the punching of above-mentioned kinetic energy gas molecule Above-mentioned graphene forerunner intermediate product is swashed, so that at least partly graphene forerunner intermediate product is separated into graphene powder.

10. graphene powder preparation method as claimed in claim 9, which is characterized in that above-mentioned supply unit is further included positioned at above-mentioned One collector in impulse unit downstream and one device is isolated and purified, which further includes: step C) by upper It is above-mentioned by among impulse graphene forerunner including at least partly graphene powder by impulse separation to state collector collection Product, and by it is above-mentioned isolate and purify device by above-mentioned at least partly graphene powder by the above-mentioned graphene forerunner by impulse among Screen separates in product.