CN105110312A - Carbon nanotube graphite composite material and preparation method and device thereof - Google Patents
Carbon nanotube graphite composite material and preparation method and device thereof Download PDFInfo
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Abstract
The invention relates to a carbon nanotube graphite composite material and a preparation method and device thereof. The preparation method includes the following steps that carbon nanotube dispersion liquid and graphite dispersion liquid are prepared respectively; the carbon nanotube dispersion liquid and the graphite dispersion liquid are sequentially conveyed to a forming net, meanwhile vacuum dehydration is carried out, and a carbon nanotube graphite composite prefabricated body is obtained, wherein the oven-dry ratio of carbon nanotubes and expanded graphite is 1:0.1-5; the carbon nanotube graphite composite prefabricated body is dried, stripped and rolled, and accordingly the carbon nanotube graphite composite material is obtained. The technology that the carbon nanotube graphite composite material is filtered and prepared through an all-wet method is adopted, and technology efficiency is high, and large-scale production can be conveniently performed. Meanwhile, the technology adopting the all-wet method effectively solves the problem that a natural graphite film is difficult to thin through dry type rolling, and the minimum thickness of the composite material can be 30 microns.
Description
Technical field
The present invention relates to technical field of nano material, particularly relate to a kind of carbon nanotube graphite composite material and preparation method thereof and device.
Background technology
Carbon nanotube is as a kind of carbon nanomaterial, has low density, high-modulus, high-specific surface area, and excellent electrical and thermal conductivity performance, has wide prospect of the application at numerous areas.At present, commercial carbon nanotube directly usual in several nanometer to tens nanometers, length usually at several micron to tens microns, length-to-diameter ratio can arrive 1000, macroscopic view is seen and is presented pulverulence, and anxious easily reunion when using, and therefore directly uses and seems cumbersome.
Carbon nanotube being made film material is a good mode of carrying out sizable application.Membranaceous (or perhaps paper-like) material that the carbon nanotube that this use is simple is made is called carbon nanotube paper (Buckypaper), is the earliest to adopt the mode of suction filtration carbon nano tube dispersion liquid to synthesize in 1998 in laboratory by Nobel laureate RichardSmalley.Carbon nanotube paper intensity derives from the winding effect of Van der Waals force between carbon nanotube and carbon nanotube.Therefore, carbon nanotube paper retains the low density of carbon nanotube, the feature of high-specific surface area, simultaneously due to the specific surface area that microscale is high, therefore also remain high blackness, but mechanical strength heat-conductivity conducting performance is but had a greatly reduced quality relative to single carbon nanotube.Such as, for heat conduction, the theoretical thermal conductivity of single-root carbon nano-tube is 6600W/mK, and the thermal conductivity of carbon nanotube paper is 10-766W/mK (thermal conductivity that open source literature " NanoLett.2012; 12,4848-485 " reports a kind of carbon nanotube paper aligned of very high-density reaches 766W/mK).Although this is because carbon nanotube has high axial specific conductivity and thermal conductivity, but carbon nanotube yardstick is minimum, a carbon nanotube paper is overlapped by numerous carbon nanotube to form, cause numerous contact resistance and thermal contact resistance thus, therefore the expectation of carbon nanotube paper performance in this regard and people greatly differs from each other.
Graphite film is a kind of well thermally conductive material, its in the thermal conductivity along direction, face usually at 200-1800W/mK.Conduction graphite film has two kinds, and one adopts expanded graphite dry-pressing system to form natural stone ink film, another kind be adopt the method for high temperature graphitization organic film by synthetic graphite film.Such as patent CN103539111A discloses a kind of preparation method of high thermal conductivity natural flexible graphite film, adopts expanded graphite to insert rolling press and carry out roll extrusion, this graphite guide hotting mask the thinnest be 0.1mm, thermal conductivity coefficient is up to 620W/mK.Patent CN103011141A discloses a kind of Kapton that adopts and after 2500-3000 DEG C of high temperature graphitization, obtains synthetic graphite film, thickness 0.0125mm to 0.075mm, plane thermal conductivity >=1450 ± 200W/mK.Natural graphite film production cost is lower, has good heat conductivility, but it is lower than synthetic graphite heat conducting film thermal conductivity, and simultaneously owing to being adopt direct dry method roll extrusion powder, thickness is also difficult to accomplish very thin, usually maximum at 0.1mm.Synthetic graphite has high plane thermal conductivity performance, and thickness also can be accomplished very thin, but its working condition harshness (needing 2500-3000 DEG C of high temperature), and production cost is high.In addition, graphite Z-direction heat conductivility is not good, and the relative carbon nanotube paper of blackness is poor.
Therefore, prior art is badly in need of a kind of method and apparatus preparing carbon nanotube graphite composite material.
Summary of the invention
Based on this, the object of this invention is to provide a kind of preparation method of carbon nanotube graphite composite material.
Concrete technical scheme is as follows:
A preparation method for carbon nanotube graphite composite material, comprises the steps:
Carbon nanotube and tensio-active agent are added to the water by the mass ratio of 1:0.45-2.0, the obtained carbon nano tube dispersion liquid of dispersion;
Expanded graphite and tensio-active agent are added to the water by the mass ratio of 1:0.4-2.0, the obtained graphite dispersing solution of dispersion;
Carbon nano tube dispersion liquid and graphite dispersing solution are delivered to successively (or the mixed solution of carbon nano tube dispersion liquid, carbon nano dispersion fluid and graphite dispersing solution, graphite dispersing solution are delivered on forming net successively) on forming net, carry out vacuum hydro-extraction simultaneously, obtain carbon nanotube graphite compound precast body, wherein the over dry of carbon nanotube and expanded graphite is than being 1:0.1-5;
Described carbon nanotube graphite compound precast body is carried out drying stripping, roll-in, obtain described carbon nanotube graphite composite material.
Wherein in an embodiment, described carbon nanotube graphite compound precast body has also carried out heat treatment operation after drying is peeled off, and the processing parameter of described heat treatment operation is 150-400 DEG C of process 1-30s.
Wherein in an embodiment, the opposite side being also included in the graphite linings of described carbon nanotube graphite composite material encloses one layer of polymeric thin film layer.
Wherein in an embodiment, the method for described dispersion is ultrasonic wave dispersion.
Wherein in an embodiment, described tensio-active agent is selected from sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, polysorbate85, tween 80, polysorbate60, polysorbate40, polysorbas20, polyacrylate, block type nonionogenic tenside, phosphoric acid ester salt form tensio-active agent, polyethenoxy alkylphenols, Triton X-100, sugar glycocide surfactant, one or several in sucrose fatty ester.
Another object of the present invention is to provide a kind of carbon nanotube graphite composite material.
Concrete technical scheme is as follows:
The carbon nanotube graphite composite material that above-mentioned preparation method prepares.
Wherein in an embodiment, this carbon nanotube graphite composite material comprises the carbon nanotube layer and graphite linings that stack gradually; The thickness of described carbon nanotube layer is 0.2-500 μm; The thickness of described graphite linings is 1-500 μm;
Or it comprises the carbon nanotube layer, transition layer and the graphite linings that stack gradually; Described transition layer is the mixolimnion of carbon nanotube and graphite; The thickness of described carbon nanotube layer is 0.2-500 μm; The thickness of described transition layer is 0.2-100 μm; The thickness of described graphite linings is 1-500 μm.
Wherein in an embodiment, the opposite side of described graphite linings is also provided with polymer film layer, is also provided with or is not provided with layer of metal electrode between described graphite linings and described polymer film layer.
Another object of the present invention is to provide a kind of device preparing above-mentioned carbon nanotube graphite composite material.
Concrete technical scheme is as follows:
Prepare a device for above-mentioned carbon nanotube graphite composite material, comprise storage tank, head box, forming net, vacuum filtration equipment and rolling equipment; The bottom of described head box and the side of described forming net be arranged in parallel, and the angle between forming net and horizontal plane is 5-40 °; Be provided with multiple dividing plate in described head box, head box is divided into multiple container cavity along the direction that forming net runs by dividing plate; The quantity of described storage tank is identical with the quantity of described container cavity, and is communicated with described container cavity respectively; Described vacuum filtration equipment is used for carrying out processed to forming net; Described rolling equipment is used for carrying out roll operation to the product after processed.
Wherein in an embodiment, the bottom of described dividing plate and described head box is provided with the gap of 1-5mm.
Wherein in an embodiment, the travelling speed of described forming net is 0.5-100m/min; Angle between described forming net and horizontal plane is 10-20 °.
Wherein in an embodiment, this device also comprises high-temperature processing device, for carrying out pyroprocessing to the product after processed.
Wherein in an embodiment, two operating surfaces of described rolling equipment are rigid smooth surface.
Wherein in an embodiment, the operating surface that described rolling equipment contacts with the carbon nanotube layer of described carbon nanotube graphite composite material is flexible smooth surface, and another operating surface is rigid smooth surface.
Beneficial effect of the present invention is as follows:
The device preparing carbon nanotube graphite composite material of the present invention is continuous wet moulding device, the continuous seepage of carbon nanotube graphite composite material can be realized, and the mechanism regulated owing to devising zoned pressure (arranges dividing plate in head box, the bottom of dividing plate and head box is provided with the gap of 1-5mm, when there is difference of altitude in the liquid level of the liquid of dividing plate both sides, gap location will produce pressure difference, the accommodating cavity making liquid level low produces liquid mixing district near the position of dividing plate, this mixing zone will form transition layer on forming net), make to make transition layer and become abnormal simple.Angle wherein between forming net and horizontal plane is set to 10-20 degree, its objective is: nano material dehydration is more difficult, needs an inclination angle, ensures enough dehydrating amounts.
The carbon nanotube graphite composite material adopting said apparatus to prepare effectively combines the advantage of carbon nanotube and graphite, save carbon nanotube high-specific surface area on the one hand, high blackness, the advantage of microscale, simultaneously in conjunction with the advantage of graphite film, carbon nanotube graphite composite material electrical and thermal conductivity performance is all had greatly improved, and matrix material has more actual application prospect relative to simple carbon nanotube paper.Adopt Whote-wet method to filter and prepare carbon nanotube graphite composite material technique, process efficiency is high, be convenient to carry out amplification scale production, simultaneously effectively overcome dry type roll extrusion and make natural stone ink film owing to have employed Whote-wet method technique and be difficult to thin problem, the minimum thickness of matrix material can reach 30 microns.
In the carbon nanotube graphite composite material compound that the present invention prepares, lug is enclosed polymeric film and very can be facilitated and use as electrode, after this encloses polymeric film on the one hand, total mechanical strength greatly improves, be convenient to carry out transporting and post-production, the film enclosed on the other hand can directly as the encapsulating film of energy storage device below, and without the need to increasing encapsulation again, operate very easy.
Accompanying drawing explanation
Fig. 1 is carbon nanotube graphite composite material schematic diagram in embodiment 1 (in figure: 1-carbon nanotube layer, 2-graphite linings);
Fig. 2 is carbon nanotube graphite composite material section S EM photo in embodiment 1 (in figure: A is 10000 times of enlarged views, B is 2000 times of enlarged views);
Fig. 3 is that in embodiment 1, carbon nanotube graphite composite material and pure nano-carbon tube paper dispel the heat comparison diagram;
Fig. 4 is the structural representation (in figure: 1-carbon nanotube layer, 2-graphite linings, 3-carbon nanotube graphite transition layer) of carbon nanotube graphite composite material in embodiment 3;
Fig. 5 is the SEM photo with the carbon nanotube graphite composite material partial cross section of transition layer in embodiment 3;
Fig. 6 is carbon nanotube graphite composite material schematic diagram in embodiment 4;
Fig. 7 is the device (in figure: 1-forming net preparing carbon nanotube graphite composite material in embodiment 2,2-head box, 3-head box dividing plate, 4-first container cavity (for accommodating carbon nano tube dispersion liquid), 5-second container cavity (for accommodating graphite dispersing solution), 6-vacuum filtration equipment, 7-carbon nano tube dispersion liquid storage tank, 8-expanded graphite dispersion liquid storage tank);
Fig. 8 is the device preparing carbon nanotube graphite composite material in embodiment 3;
Fig. 9 is the layout drawing (in figure: the graphite linings surface of 1-carbon nanotube graphite composite material, 2-draws lug, and 3-aluminium props up grid) of silk screen printing aluminium paste and extraction lug in embodiment 5;
Figure 10 is the cross section structure schematic diagram (in figure: 1-PET/PE composite membrane, 2-draws lug, 3-carbon nanotube layer, 4-graphite linings) of the electrode utilizing carbon nanotube graphite composite material to prepare in embodiment 5;
Figure 11 is the supercapacitor structures schematic diagram (in figure: 1-PET/PE composite membrane, 2-draws lug, 3-carbon nanotube layer, 4-graphite linings, 5-PVA gel electrolyte) that the electrode assembling utilizing carbon nanotube graphite composite material to prepare in embodiment 5 becomes.
Embodiment
By the following examples the application is further elaborated.
Embodiment 1
Carbon nanotube and tensio-active agent are added to the water by the mass ratio of 1:1.5, ultrasonic wave is disperseed, obtained carbon nano tube dispersion liquid.
Expansible black lead is put into microwave oven to expand 20s, obtained vermiform expanded graphite, is added to the water expanded graphite and tensio-active agent by the mass ratio of 1:1, obtains expanded graphite dispersion liquid through ultrasonic disperse.
Carbon nano tube dispersion liquid is delivered to forming net, and through the shaping obtained wet carbon nanotube layer of suction filtration, then be added on carbon nanotube layer by expanded graphite dispersion liquid, suction filtration is shaping, and carbon nanotube layer and expanded graphite layer add in the ratio of over dry 1:2.
Dry, obtain carbon nanotube graphite compound precast body, by carbon nanotube graphite compound precast body, be placed in Infrared heaters and carry out pyroprocessing 10s, to remove the residual tensio-active agent impurity in carbon nanotube graphite compound precast body, now precast body thickness is 120 microns.
By obtained carbon nanotube graphite compound precast body, through roll squeezer roll extrusion, i.e. obtained carbon nanotube graphite composite material, now its thickness is 55 microns.Fig. 1 is its structural representation, and Fig. 2 is the SEM photo in the cross section of carbon nanotube graphite composite material.
Heat conductivility is tested: carbon nanotube paper and carbon nanotube graphite composite material are successively affixed on same chip for cell phone, and keep identical envrionment temperature, run same program, testing mobile phone ramp case.Fig. 3 is test result.The heat dispersion of carbon nanotube graphite composite material is obviously better than the heat dispersion of carbon nanotube paper.
Embodiment 2
A kind of device (as shown in Figure 7) preparing carbon nanotube graphite composite material, comprise storage tank 7,8, head box 2, forming net 1, vacuum filtration equipment 6 and rolling equipment (not shown); The bottom of described head box and the side of described forming net be arranged in parallel, and the angle between forming net and horizontal plane is 15 °; Be provided with dividing plate 3 in described head box, head box is divided into the first container cavity 4 and the second container cavity 5 by this dividing plate along the direction that forming net runs; The bottom of described dividing plate and head box is provided with the gap of 2mm; Described high-level storage groove is 2, is connected respectively with described first container cavity and the second container cavity by pipeline; Described vacuum filtration equipment is used for carrying out processed to forming net; Described rolling equipment is used for carrying out roll operation to the product after processed.Described first container cavity is used for accommodating carbon nano tube dispersion liquid, and described second container cavity is used for accommodating graphite dispersing solution.
Fig. 7 shown device is adopted to carry out the preparation of carbon nanotube graphite composite material.In 200L mixer, carbon nano tube dispersion liquid and graphite dispersing solution is prepared respectively by the mode in embodiment 1.Then carbon nano tube dispersion liquid and graphite dispersing solution are pumped to respectively and prepare pond in advance.Subsequently carbon nano tube dispersion liquid is pumped to storage tank 7, graphite dispersing solution is pumped to storage tank 8, storage tank again by fluid transport to head box 2.Regulate 4 as shown in Figure 7, the liquid level of 5 on a sea line, to ensure that two regions are equal at gap place, dividing plate 2 lower end pressure.Whole forming net moves obliquely along with transfer roller, and the travelling speed of described forming net is 0.5-100m/min; Vacuum filtration equipment 6 below forming net realizes high speed dewatering, namely wet carbon nanotube graphite compound precast body has been prepared, then (operating surface that described rolling equipment contacts with the carbon nanotube layer of described carbon nanotube graphite composite material is flexible smooth surface to pass through dry roll-in, another operating surface is rigid smooth surface), namely made carbon nanotube graphite composite material, this structural thickness is 35 microns.
Embodiment 3
The present embodiment adopts Fig. 8 device to carry out the preparation of carbon nanotube graphite composite material, is the liquid level of the liquid level of the first container cavity 4 higher than the second container cavity 5 with Fig. 7 difference.
In 200L mixer, carbon nano tube dispersion liquid and graphite dispersing solution is prepared respectively by the mode in embodiment 1.Then carbon nano tube dispersion liquid and graphite dispersing solution are pumped to respectively and prepare pond in advance.Subsequently carbon nano tube dispersion liquid is pumped to storage tank 7, graphite dispersing solution is pumped to storage tank 8.Regulate the liquid level of liquid level higher than liquid level mouth 5 of liquid level mouth 4 as shown in Figure 8, cause at gap place, barrier film lower end, the dispersion liquid pressure of carbon nano tube dispersion liquid side is higher than the pressure of graphite dispersing solution side, under the effect of the pressure, part carbon nano tube dispersion liquid has penetrated into the second container cavity, define a dynamic mixed solution region, what this part formed out is transition layer.Whole forming net moves obliquely along with transfer roller, and the vacuum filtration equipment below forming net realizes high speed dewatering, has namely prepared wet carbon nanotube graphite compound precast body.By super-dry roll-in, namely made carbon nanotube graphite composite material, Fig. 4 is its structural representation.As the SEM photo of the carbon nanotube graphite composite material partial cross section with transition layer of Fig. 5 display, in figure, the oval region enclosed is transition layer.
Embodiment 4
In 200L mixer, carbon nano tube dispersion liquid and graphite dispersing solution is prepared respectively by the mode in embodiment 1.Carbon nano tube dispersion liquid is delivered to forming net, and through the shaping obtained wet carbon nanotube layer of suction filtration, then be added on carbon nanotube layer by graphite dispersing solution, suction filtration is shaping, and carbon nanotube layer and expanded graphite layer add in the ratio of over dry 2:5.
Dry, obtain carbon nanotube graphite compound precast body, by carbon nanotube graphite compound precast body, be placed in Infrared heaters and carry out pyroprocessing 10s, to remove tensio-active agent impurity residual in carbon nanotube graphite compound precast body, now precast body thickness is 120 microns.
By obtained carbon nanotube graphite compound precast body, through roll squeezer roll extrusion, i.e. obtained carbon nanotube graphite composite material, now its thickness is 48 microns.
Carbon nanotube graphite composite material is placed in attached one deck pp film on film machine.Its structure as shown in Figure 6.
Embodiment 5
Carbon nanotube graphite composite material can be applicable to electrode, specific as follows:
Carbon nanotube and tensio-active agent are added to the water by the mass ratio of 1:1.5, entered ultrasonic wave dispersion, obtained carbon nano tube dispersion liquid.Expansible black lead is put into 900 DEG C of box-type furnaces to expand 5s, obtained vermiform expanded graphite, is added to the water expanded graphite and tensio-active agent by the mass ratio of 1:1, obtains graphite dispersing solution through ultrasonic disperse.
Carbon nano tube dispersion liquid is delivered to forming net, and through the shaping obtained wet carbon nanotube layer of suction filtration, then be added on carbon nanotube layer by graphite dispersing solution, suction filtration is shaping, and carbon nanotube layer and expanded graphite layer add in the ratio of over dry 2:1.
Dry, obtain carbon nanotube graphite compound precast body, by carbon nanotube graphite compound precast body, be placed in Infrared heaters and carry out pyroprocessing 10s, to remove tensio-active agent impurity residual in carbon nanotube graphite compound precast body, now precast body thickness is 100 microns.
By obtained carbon nanotube graphite compound precast body, through roll squeezer roll extrusion, i.e. obtained carbon nanotube graphite composite material, now its thickness is 60 microns.
Adopt screen printing mode at the graphite one side printing aluminium glue grid line as shown in Figure 9 of carbon nanotube graphite composite material, comprise main grid and a grid, and the aluminum foil strip that bonds on main grid, as extraction lug.
By heating carbon nanotube graphite composite material, the hot pressing of PET/PE composite membrane is compound to the graphite side of carbon nanotube graphite composite material, and stays limit, make electrode sections structure as shown in Figure 10.
Electrode is placed in MnSO
4in electrolytic solution, deposit one deck MnO on the carbon nanotubes
2active material, cleaning, drying, the namely obtained electrode being applied to ultracapacitor.This electrode, owing to enclosing one layer of polymeric film on graphite linings surface in advance, can effectively be avoided at deposition MnO
2process, can deposit to reverse side (problem in graphite linings), in compound, polymeric film effectively can increase the mechanical strength of whole electrode, adds the operability of processing below, reduces the risk in transport, course of processing breakage.
Assemble complete ultracapacitor: by above-mentioned for two panels electrode make-up, therebetween last layer PVA gel electrolyte, what then utilize PET/PE composite membrane stays limit, and hot pressing is sealed.This ultracapacitor thickness is only 320 microns, and as scraps of paper shape, structure as shown in figure 11.The ultracapacitor of this scraps of paper shape, because thickness is thin, flexible, light weight, is convenient to attach or be embedded in body surface or interlayer.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (14)
1. a preparation method for carbon nanotube graphite composite material, is characterized in that, comprises the steps:
Carbon nanotube and tensio-active agent are added to the water by the mass ratio of 1:0.45-2.0, the obtained carbon nano tube dispersion liquid of dispersion;
Expanded graphite and tensio-active agent are added to the water by the mass ratio of 1:0.4-2.0, the obtained graphite dispersing solution of dispersion;
Carbon nano tube dispersion liquid and graphite dispersing solution are delivered to successively on forming net, carry out vacuum hydro-extraction simultaneously, obtain carbon nanotube graphite compound precast body, wherein carbon nanotube and the over dry of expanded graphite are than being 1:0.1-5;
Described carbon nanotube graphite compound precast body is carried out drying stripping, roll-in, obtain described carbon nanotube graphite composite material.
2. preparation method according to claim 1, is characterized in that, described carbon nanotube graphite compound precast body has also carried out heat treatment operation after drying is peeled off, and the processing parameter of described heat treatment operation is 150-400 DEG C of process 1-30s.
3. the preparation method according to any one of claim 1-2, is characterized in that, the opposite side being also included in the graphite linings of described carbon nanotube graphite composite material encloses one layer of polymeric thin film layer.
4. the preparation method according to any one of claim 1-2, is characterized in that, the method for described dispersion is ultrasonic wave dispersion.
5. the preparation method according to any one of claim 1-2, it is characterized in that, described tensio-active agent is selected from sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, polysorbate85, tween 80, polysorbate60, polysorbate40, polysorbas20, polyacrylate, block-type surfactants, phosphoric acid ester salt form tensio-active agent, polyethenoxy alkylphenols, Triton X-100, sugar glycocide surfactant, styrene-maleic anhydride copolymer, Styrene-acrylic copolymer, aqueous polyurethane type dispersion agent, one or several in sucrose fatty ester.
6. the carbon nanotube graphite composite material for preparing of preparation method described in any one of claim 1-5.
7. carbon nanotube graphite composite material according to claim 6, is characterized in that, it comprises the carbon nanotube layer and graphite linings that stack gradually; The thickness of described carbon nanotube layer is 0.2-500 μm; The thickness of described graphite linings is 1-500 μm;
Or it comprises the carbon nanotube layer, transition layer and the graphite linings that stack gradually; Described transition layer is the mixolimnion of carbon nanotube and graphite; The thickness of described carbon nanotube layer is 0.2-500 μm; The thickness of described transition layer is 0.2-100 μm; The thickness of described graphite linings is 1-500 μm.
8. carbon nanotube graphite composite material according to claim 7, is characterized in that, the opposite side of described graphite linings is also provided with polymer film layer, is also provided with or is not provided with layer of metal electrode between described graphite linings and described polymer film layer.
9. prepare a device for carbon nanotube graphite composite material described in any one of claim 6-8, it is characterized in that, comprise storage tank, head box, forming net, vacuum filtration equipment and rolling equipment; The bottom of described head box and the side of described forming net be arranged in parallel, and the angle between forming net and horizontal plane is 5-40 °; Be provided with multiple dividing plate in described head box, head box is divided into multiple container cavity along the direction that forming net runs by dividing plate; The quantity of described storage tank is identical with the quantity of described container cavity, and is communicated with described container cavity respectively; Described vacuum filtration equipment is used for carrying out processed to forming net; Described rolling equipment is used for carrying out roll operation to the product after processed.
10. device according to claim 9, is characterized in that, the bottom of described dividing plate and described head box is provided with the gap of 1-5mm.
11. devices according to any one of claim 9-10, it is characterized in that, the travelling speed of described forming net is 0.5-100m/min; Angle between described forming net and horizontal plane is 10-20 °.
12. devices according to any one of claim 9-10, it is characterized in that, this device also comprises high-temperature processing device, for carrying out pyroprocessing to the product after processed.
13. devices according to any one of claim 9-10, is characterized in that, two operating surfaces of described rolling equipment are rigid smooth surface.
14. devices according to any one of claim 9-10, it is characterized in that, the operating surface that described rolling equipment contacts with the carbon nanotube layer of described carbon nanotube graphite composite material is flexible smooth surface, and another operating surface is rigid smooth surface.
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| CN106219531B (en) * | 2016-07-29 | 2018-12-25 | 碳元科技股份有限公司 | A kind of preparation method of graphite/nanometer carbon pipe array composite heat conduction film |
| CN107046738A (en) * | 2017-04-06 | 2017-08-15 | 昆明纳太科技有限公司 | Resistance heating element and preparation method thereof |
| CN107046738B (en) * | 2017-04-06 | 2021-01-05 | 昆明纳太科技有限公司 | Resistance heating element and manufacturing method thereof |
| CN110896144A (en) * | 2018-09-12 | 2020-03-20 | 深圳新宙邦科技股份有限公司 | Conductive composition, battery pole piece and battery |
| CN110896144B (en) * | 2018-09-12 | 2021-11-09 | 深圳新宙邦科技股份有限公司 | Conductive composition, battery pole piece and battery |
| CN110950628A (en) * | 2019-12-09 | 2020-04-03 | 宁波中乌新材料产业技术研究院有限公司 | Preparation method of carbon composite material |
| CN112981398A (en) * | 2019-12-13 | 2021-06-18 | 南京源昌新材料有限公司 | Metal-carbon nanotube film composite material and preparation method thereof |
| CN112981398B (en) * | 2019-12-13 | 2023-06-23 | 南京源昌新材料有限公司 | Metal-carbon nano tube film composite material and preparation method thereof |
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