CN103660484A - Flexible graphite paper, and manufacturing method and thickening structure thereof - Google Patents
Flexible graphite paper, and manufacturing method and thickening structure thereof Download PDFInfo
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- CN103660484A CN103660484A CN201210358232.5A CN201210358232A CN103660484A CN 103660484 A CN103660484 A CN 103660484A CN 201210358232 A CN201210358232 A CN 201210358232A CN 103660484 A CN103660484 A CN 103660484A
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Abstract
The invention provides flexible graphite paper, and a manufacturing method and a thickening structure thereof. The manufacturing method of the flexible graphite paper comprises the following steps: coating a first thin film with a thickening solution to form the thickening structure; heating the thickening structure to enable the first thin film and the thickening solution to form the flexible graphite paper, wherein the heat transfer sectional area of the flexible graphite paper is greater than that of the first thin film, and the heat conduction coefficient of the flexible graphite paper is ranges from 1,200 to 6,000 W/m DEG C.
Description
Technical field
The invention relates to a kind of soft graphite paper and manufacture method thereof and thicken structure, especially about a kind of for maintaining soft graphite paper and the manufacture method thereof of high thermal conductivity coefficient and thickening structure.
Background technology
Traditional graphite paper method is if increase thickness nothing more than being to use thicker polyimides (PI) film to carry out sintering and its graphitization.If but PI film thickness is when blocked up, in high temperature sintering graphitizing method, the gas often producing because of PI film sintering causes graphite paper in the easy embrittlement of graphited stage.Therefore conventional graphite paper thickening method generally thickens when mediating and by graphite paper is overlapping with glue material, yet because the thermal conductivity factor of glue material is very low, thereby utilize the overall thermal conductivity of the graphite paper that glue material thickens also can be along with reduction.
The method that another kind of traditional graphite paper thickens is to utilize Delanium paper or natural expanded graphite sheet to make graphite paper and Delanium paper or natural expanded graphite sheet integrally formed by crossing high pressure compression method, yet because the thermal conductivity factor of natural expanded graphite sheet is lower, although the soft graphite paper that therefore method makes thus thickens, its thermal conductivity factor also declines thereupon.
Summary of the invention
The problem existing in order to improve above-mentioned prior art, the invention provides a kind of manufacture method with the soft graphite paper of the effect of thickening.
In view of the existing problem of prior art, therefore, the present invention is to provide a kind of manufacture method of soft graphite paper, and it comprises the following step: coating one thickens solution and in a first film, forms one and thicken structure; And heat this and thicken structure, make this first film and this thicken solution and form this soft graphite paper, wherein the heat transfer sectional area of this soft graphite paper is greater than the heat transfer sectional area of this first film, and the thermal conductivity factor scope of this soft graphite paper is between 1200 to 6000W/m ℃.
In addition, the present invention also provides a kind of and thickens structure it comprises the first film and thickening layer.This first film is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite.In addition, thickening layer is to be arranged on this first film, this thickening layer be selected from polyimide solution, containing carbon solution and flake graphite alkene.
Moreover the present invention separately provides a kind of soft graphite paper, it comprises graphite paper body, and wherein, this graphite paper body thickness is between 23 microns to 300 microns, and the thermal conductivity factor scope of this graphite paper body is between 1200 to 6000W/m ℃.
Other object of the present invention, part will be stated in follow-up explanation, and part can be learnt easily in description of contents, or can be learnt by enforcement of the present invention.Each aspect of the present invention can be utilized specifically noted element and combination in accompanying claim and understand and reach.Need to understand, the general remark of first stating and following detailed description be use for example only all, not in order to limit the present invention.
Summarize quite widely technical characterictic of the present invention and advantage above, but make the present invention's detailed description below be obtained better understanding.Other technical characterictic and the advantage that form claim target of the present invention will be described in below.Persond having ordinary knowledge in the technical field of the present invention should be appreciated that, can quite easily utilize the concept below disclosing to can be used as modification with specific embodiment or design other structure or method and realize the object identical with the present invention.Persond having ordinary knowledge in the technical field of the present invention also should be appreciated that, this class equivalence construction cannot depart from the spirit and scope of the present invention that accompanying claim defines.
Accompanying drawing explanation
Fig. 1 is according to the flow chart of the manufacture method of the soft graphite paper of one embodiment of the invention;
Fig. 2 is for according to the profile that the first film step is provided of one embodiment of the invention;
Fig. 3 is for to thicken solution in the profile of the first film step according to the coating of one embodiment of the invention;
Fig. 4 is for thickening according to one embodiment of the invention that structure is pressurizeed and the profile of heating steps;
Fig. 5 is for according to the profile of soft graphite paper after the completing of one embodiment of the invention;
Fig. 6 is the profile that thickens Structural superposition according to still another embodiment of the invention;
Fig. 7 is the profile that thickens Structural superposition according to another embodiment of the present invention;
Fig. 8 is the profile that thickens structure according to another embodiment of the present invention;
Fig. 9 for according to another embodiment of the present invention thicken that structure is pressurizeed and the profile of heating steps;
Figure 10 is the profile of soft graphite paper after completing according to another embodiment of the present invention;
Figure 11 is the flow chart of the manufacture method of soft graphite paper according to still another embodiment of the invention; And
Figure 12 is according to the schematic diagram after structure pressing that thickens of an embodiment more of the present invention.
Wherein, description of reference numerals is as follows:
110 the first films
120 second films
130 thicken solution
140 thicken structure
140 ' thicken structure
150 smooth plate objects
190 soft graphite papers
200 soft graphite papers
300 thicken structure
310 the first films
330 thickening layers
1010 steps
1020 steps
1030 steps
1040 steps
1050 steps
1060 steps
1070 steps
1080 steps
The specific embodiment
The present invention at this, inquire into for the manufacture method of soft graphite paper.In order to understand up hill and dale the present invention, will detailed step and structure be proposed in following description.Apparently, execution of the present invention is not defined in the known specific details of those skilled in the relevant art.On the other hand, well-known structure or step are not described in details, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment of the present invention will be described in detail as follows, yet except these are described in detail, the present invention can also implement in other embodiments widely, and scope of the present invention circumscribed not, its with after the scope of the claims be as the criterion.
Fig. 1 is the flow chart of one embodiment of the invention, and the manufacture method of this soft graphite paper comprises the following step.Step 1010 coating thickens solution and forms and thicken structure in the first film.Step 1040 heating thickens structure.
Please refer to the profile of the soft graphite paper method shown in Fig. 2 to Fig. 3 and the flow chart shown in Fig. 1 and elaborate as follows.
As shown in Fig. 2 matching step 1010, provide the first film 110.In this embodiment, the first film 110 can distinctly be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite (highly oriented pyrolytic graphite).
As shown in Fig. 3 matching step 1010, the present invention is that coating thickens solution 130 in the first film 110 and forms one and thicken structure 140 in this embodiment.In this embodiment, thicken the group that solution 130 is selected from polyimide solution, contains carbon solution and composition thereof.If while thickening solution 130 for polyimide solution, the solute percentage by weight of polyimide solution, also can be between 15 to 25% between 10 to 50%.If thicken solution 130, be, while containing carbon solution, containing carbon solution, to can be graphene solution, its solute percentage by weight is between 0.01 to 50%.
As shown in Fig. 4 matching step 1040, thicken structure 140 and be for example positioned over, between two smooth plate objects 150 (carbon plate or graphite cake), smooth plate object 150 can apply a strength in thickening structure 140, make the suffered pressure of smooth plate object 150 between 0.025 to 0.1kg/cm2.Meanwhile, to thickening structure 140, carry out heating steps 1040.
In embodiment as shown in Fig. 4 matching step 1040, thicken structure 140 and can heat high temperature induction furnace (not shown) by use and utilize above-mentioned smooth plate object 150 to press.Thickening structure 140 is to be heated to 2800 ℃ by room temperature.In this embodiment, thicken structure 140 and be, but be not limited to, by stepwise heating mode, heated, also can be directly by room temperature, be heated between 2400 ℃ to 2800 ℃ of temperature.Stepwise heating mode, particularly, in the time of can being heated to 1000 ℃ following (comprising 1000 ℃) by room temperature, heating per minute is no more than 2 ℃, while being heated to above 2800 ℃ following (comprising 2800 ℃) by 1000 ℃, heating per minute is no more than 10 ℃, and this stepwise heating mode can make to thicken structure 140 and in graphited process, is unlikely to produce fold and breaks.When if the first film 110 is polyimide film, when stepwise heating, below being heated to 1000 ℃ by room temperature, in the situation of (comprising 1000 ℃), need to utilize smooth plate object 150 to pressurize, yet during the situation of (comprising 2800 ℃) below being heated to above 2800 ℃ by 1000 ℃, thicken structure 140 and can select pressurization or not pressurize.If the first film 110 during for carbonization polyimide film and high orientation pyrolytic graphite, is to be heated between 2400 ℃ to 2800 ℃ of temperature by room temperature, and thickens structure 140 and can select pressurization or not pressurize.
Particularly, thicken the graphitization temperature of structure 140 between 2400 ℃ to 2800 ℃, therefore when temperature is between 2400 ℃ to 2800 ℃, comprises the first film 110 and thicken thickening structure 140 and making macromolecule membrane form soft graphite paper 190 of solution 130, as shown in Figure 5.In addition, above-described embodiment is to take the single structure 140 that thickens as example, however in embodiment as shown in FIG. 6 and 7, thicken structure 140 and smooth plate object 150 can be overlapping or thicken structure 140 itself can be overlapping and carry out above-mentioned heating steps.
The heat transfer sectional area of this soft graphite paper 190 is as shown in Figure 5 greater than the sum total of the heat transfer sectional area of the first film 110, and in other words, the thickness of soft graphite paper 190 is thicker compared with the gross thickness of the first film 110.Soft graphite paper 190 thickness of the present invention are between 23 microns to 300 microns.If the method thickness that thickens graphite paper due to tradition reaches 25 microns when above, the gas producing during soft graphite paper 190 Chang Yinwei graphitization and embrittlement.But because the first film 110 of the present invention is all shaped, because internal stress is directly proportional to thickness, therefore thicken solution 130 and just help to thicken the first film 110, therefore can not increase internal stress, so can overcome the soft graphite paper 190 embrittlement phenomenons that traditional thickening method easily causes.
In addition, traditional thickening method is to utilize glue material or natural graphite flakes that graphite paper is thickened, thereby can cause whole thermal conductivity factor to decline.Utilization of the present invention thickens solution 130 in conjunction with the first film 110.Thicken solution 130 when graphitization temperature (for example, between 2400 ℃ to 2800 ℃), can produce graphited phenomenon, owing to thickening thermal conductivity factor after solution 130 graphitizations, compare highlyer with the thermal conductivity factor of glue material or natural graphite flakes, the whole thermal conductivity factor that therefore method utilization of the present invention thickens the soft graphite paper 190 that solution graphitization produces can not decline.The overall thermal conductivity of the soft graphite paper being produced by traditional thickening method can drop to lower than 1200W/m ℃, but the thermal conductivity factor scope by the soft graphite paper 190 of manufacture method manufacturing of the present invention is between 1200 to 6000W/m ℃, therefore the thermal conductivity factor of soft graphite paper 190 can't decline because graphite paper thickens.These soft graphite paper 190 its thickness are between 23 microns to 300 microns, and the thermal conductivity factor scope of soft graphite paper 190 is between 1200 to 6000W/m ℃.
In addition as shown in Figure 8, the present invention separately comprises and one second film 120 is set is arranged at and thickens on solution 130, so form one thicken structure 140 '.Yet in other embodiment (not shown), also can will thicken the space of 120 of solution 130 injection the first films 110 and the second films, and make to thicken structure 140 ' formation.Particularly, the first film 110 can not be subject to the impact of the second film 120 and while being independently selected from as polyimide film, the second film 120 also can not be subject to the impact of the first film 110 be independently selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite three one of them.
As shown in Fig. 9 matching step 1040, thicken structure 140 ' be positioned between two smooth plate objects 150, smooth plate object 150 can apply a strength in thickening structure 140, make the suffered pressure of smooth plate object 150 between 0.025 to 0.1kg/cm
2.In other embodiments, smooth plate object 150 can apply different strength press thicken structure 140 ', for example respectively with the strength of 500 pounds and 2700 pounds and press thicken structure 140 '.The mode that this difference strength is pressed can make the packing that thickens solution 130 be controlled and can make the stress surface of the first film 110 and the second film 120 to copy the surface roughness of smooth plate object 150.For smooth plate object 150 and the first film 110 and the second film 120 are peeled off smoothly, smooth plate object 150 need to have the good release surface of intrinsic (for example non-gluing aluminium foil), thereby makes to thicken structure 140 ' can be by separated between plate object 150.In addition, in this embodiment, smooth plate object 150 can be carbon plate or graphite cake.
In embodiment as shown in Figure 10 matching step 1040, thicken structure 140 ' can heat high temperature induction furnace and utilize above-mentioned smooth plate object 150 to press by use.Thicken structure 140 ' be to be heated to 2800 ℃ by room temperature.In this embodiment, thicken structure 140 ' be, but be not limited to, by above-mentioned stepwise heating mode, heated, also can be directly by room temperature, be heated between 2400 ℃ to 2800 ℃ of temperature.Particularly, thicken structure 140 ' graphitization temperature between 2400 ℃ to 2800 ℃, therefore when temperature is between 2400 ℃ to 2800 ℃, what comprise the first film 110, the second film 120 and thicken solution 130 thickens structure 140 ' will make macromolecule membrane form soft graphite paper 200, as shown in figure 10.
The heat transfer sectional area of this soft graphite paper 200 is greater than the sum total of the heat transfer sectional area of the first film 110 and the second film 120, and in other words, the thickness of soft graphite paper 200 is thicker compared with the gross thickness of the first film 110 and the second film 120.Soft graphite paper 200 of the present invention comprises graphite paper body, and wherein this graphite paper body thickness is between 23 microns to 300 microns, and the thermal conductivity factor scope of this graphite paper body is between 1200 to 6000W/m ℃.If the method thickness that thickens graphite paper due to tradition reaches 25 microns when above, the gas producing during soft graphite paper Chang Yinwei graphitization and embrittlement.But because the first film 110 of the present invention and the second film 120 are all shaped, because internal stress is directly proportional to thickness, hereat thickening solution 130 just helps in conjunction with the first film 110 and the second film 120, therefore can not increase internal stress, so can overcome the graphite paper embrittlement phenomenon that traditional thickening method easily causes.In addition, thicken structure 140 ' also and can form freestone ink sheet via aforesaid way heating.Moreover, thicken structure 140 ' also can by a plurality of identical thicken structure 140 ' overlapping or mix thicken structure 140 and carry out the step that a plurality of overlapping modes are carried out above-mentioned heating.In addition, above-described embodiment is to thicken structure 140 ' introduction with single, yet thicken structure 140 ' thicken structure 140 shown in Fig. 6 and Fig. 7 being substituted in, and make to thicken structure 140 ' with smooth plate object 150 can be overlapping or thicken structure 140 ' itself can be overlapping and carry out above-mentioned heating steps.
In other embodiment of soft graphite making method made of paper as shown in figure 11, manufacture method separately comprises step 1020, step 1030, step 1050, step 1060 and step 1070 except the step described in Fig. 1.Yet in other various embodiments (not shown), soft graphite making method made of paper is to combine various manufacture methods by arbitrary step of step 1050, step 1060 and step 1070 or the step described in the combination step of individual steps and the embodiment of Fig. 1.For example comprise the manufacture method of step 1010 to 1050 or comprise step 1010 to 1040, the manufacture method of step 1060 and step 1070.
In manufacture method as shown in figure 11, in step 1020, contain the second film 120 thicken structure 140 ' in step 1030 apply strength and pressurization after, can will thicken structure 140 ' residing space (not shown) in the front execution step 1050 of heating steps 1040 vacuumizes, vacuum now, between 0.3 to 0.6 holder (torr), also can be 0.5torr.Then perform step 1060 and will thicken structure 140 ' residing space and pour into nitrogen, now the air pressure of nitrogen, between 0.8 to 1.2 atmospheric pressure, also can be an atmospheric nitrogen.In this embodiment, step 1050 and 1060 can be single circulation, yet in other embodiment (not shown), step 1050 and 1060 can be a plurality of circulations.In addition, when heating steps 1040, also can perform step 1070 and maintain and thicken structure 140 ' residing space in the first air pressure range simultaneously, this first air pressure range is between 0.02 to 0.04MPa, and extraneous gas diffuses to and thickens in structure 140 ' residing space when avoiding leaking gas.
In addition, in other embodiments, step 1040 can " part " be carried out with step 1030 simultaneously, for example, while room temperature being heated to 1000 ℃, smooth plate object 150 can be metal fixture, and pressing thicken structure 140 ' and the strength that makes pressing between 0.025 to 0.1kg/cm2.Yet when being heated between 1000 ℃ to 2800 ℃, thicken structure 140 ' can remove this strength that thickens structure 140 ' suffered metal fixture, be therefore just defined as " part " perform step simultaneously 1040 with step 1030.For example, owing to removing (removing metal fixture) after this strength, in the identical accommodation space in high temperature induction furnace, can insert thicken structure 140 ', therefore can make production capacity significantly promote.In addition, owing to utilizing the pressing of metal fixture to thicken structure 140 ' can slow down thickening the gas that structure 140 ' graphitization produces, and then avoid graphite paper embrittlement.Though yet this embodiment removes metal fixture, but can adopt and will thicken structure 140 ' be placed under the first air pressure range (between 0.02 to 0.04MPa), to such an extent as to also can slow down, thicken the gas that structure 140 ' graphitization produces, and then avoid soft graphite paper embrittlement, significantly promote production capacity simultaneously.
In addition, as shown in figure 12, the present invention also provides a kind of structure 300 that thickens, and comprises above-mentioned the first film 310 and thickening layer 330.The first film 310 is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite.This thickening layer 330 arranges on this first film 310.Thickening layer 330 be selected from polyimide solution, containing carbon solution and flake graphite alkene.In other words, thickening layer 330 can be and thickens solution or flake graphite alkene.
In the embodiment of Figure 12, this first film 310 is high orientation pyrolytic graphite.This thickening layer 330 is flake graphite alkene.In this embodiment, the first film 310 and thickening layer 330 are to be formed and thickened structure 300 by pressing mode, but not are formed by coating method.In addition, once this thickens structure 300 and makes after processing via pressing, can form soft graphite paper and need be via the step of any above-mentioned heating, this soft graphite paper bag graphitiferous hard copy body, its thickness is between 23 microns to 300 microns, and the thermal conductivity factor scope of this graphite paper body is between 1200 to 6000W/m ℃.And compression method can be consulted the open disclosed technology contents of case US2011/0045300 description of the U.S., above-mentioned technology contents also can be integrated in the present invention.In addition, in other embodiment (not shown), the second film of high orientation pyrolytic graphite can be arranged on thickening layer, and form similar two floor heights orientation pyrolytic graphite clamping one deck flake graphite alkene sandwich structure thicken structure.Moreover, above-mentioned sandwich style thicken structure also again pressing one sheet graphene layer on the second film to thicken the thickness of structure or graphite paper body.
According to the above, soft graphite of the present invention making method made of paper, not only method is simple and easy, more can effectively avoid overall thermal conductivity to decline and embrittlement, thickens graphite paper simultaneously, is suitable for promoting production capacity and uses.Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention; the those of ordinary skill of any art technology; within not departing from spiritual scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is when being as the criterion depending on the accompanying claim scope person of defining.
Technology contents of the present invention and technical characterstic have disclosed as above, yet persons of ordinary skill in the technical field of the present invention should be appreciated that, in the spirit and scope of the invention that attached claim defines after not deviating from, teaching of the present invention and announcement can be done all replacements and modification.For example, the structure that the many elements that above disclose can be different is implemented or is replaced with the structure of other identical function, or adopts the combination of above-mentioned two kinds of modes.
In addition, the interest field of this case is not limited to device, element or the structure of the specific embodiment disclosing above.Persond having ordinary knowledge in the technical field of the present invention should be appreciated that, based on teaching of the present invention and announcement device, element or structure, no matter existed now or developer in the future, it is to carry out in the identical mode of essence the function that essence is identical with this case embodiment announcement person, and reach the result that essence is identical, also can be used in the present invention.Therefore, following claim scope is to contain such device, element or structure.
Claims (16)
1. a manufacture method for soft graphite paper, is characterized in that, comprises the following step:
Coating one thickens solution and in a first film, forms one and thicken structure; And
Heat this and thicken structure, make this first film and this thicken solution and form this soft graphite paper, wherein the heat transfer sectional area of this soft graphite paper is greater than the heat transfer sectional area of this first film, and the thermal conductivity factor scope of this soft graphite paper is between 1200 to 6000W/m ℃.
2. manufacture method as claimed in claim 1, is characterized in that, the material of this first film is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite.
3. manufacture method as claimed in claim 2, is characterized in that, further comprises to apply a strength and thicken structure in this.
4. manufacture method as claimed in claim 1, is characterized in that, further comprises the various combination step of following arbitrary step or the following step:
This is thickened to the step that the residing space of structure vacuumizes;
This is thickened to residing this space of structure and pour into nitrogen; And
Maintain this and thicken residing this space of structure in the first air pressure range.
5. manufacture method as claimed in claim 1, is characterized in that, separately comprises one second film is set in this, thickens on solution, and this second film is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite.
6. manufacture method as claimed in claim 1, is characterized in that, this thickens the group that solution is selected from polyimide solution, contains carbon solution and composition thereof.
7. manufacture method as claimed in claim 6, is characterized in that, the solute percentage by weight of this polyimide solution is between 10 to 50%.
8. manufacture method as claimed in claim 6, is characterized in that, should be graphene solution containing carbon solution, and the solute percentage by weight of this graphene solution is between 0.01 to 50%.
9. the manufacture method as described in claim 1,2,3,4,5,6,7 or 8, is characterized in that, the thickness of this soft graphite paper is between 23 microns to 300 microns.
10. manufacture method as claimed in claim 3, is characterized in that, further comprises stepwise heating step, in the time of below being wherein heated to 1000 ℃ by room temperature, heating per minute is no more than 2 ℃, is heated to above 2800 ℃ when following by 1000 ℃, and heating per minute is no more than 10 ℃.
11. manufacture methods as described in claim 1 or 3, is characterized in that, this graphitization temperature that thickens structure heating steps is warming up between 2400 ℃ to 2800 ℃.
12. manufacture methods as described in claim 3 or 10, is characterized in that, this thickens structure heating between 1000 ℃ to 2800 ℃ time, and this thickens structure and removes this strength.
13. manufacture methods as described in claim 3 or 10, is characterized in that, this thickens structure heating between between room temperature to 1000 ℃ time, this thicken this suffered strength of structure between 0.025 to 0.1kg/cm
2.
14. 1 kinds thicken structure, it is characterized in that, comprise:
One the first film, this first film is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite; And
One thickening layer, is arranged on this first film, this thickening layer be selected from polyimide solution, containing carbon solution and flake graphite alkene.
15. structures that thicken as claimed in claim 14, is characterized in that, separately comprise one second film, are arranged on this thickening layer, and wherein this second film is to be selected from polyimide film, carbonization polyimide film and high orientation pyrolytic graphite.
16. 1 kinds of soft graphite papers, is characterized in that, comprise:
One graphite paper body, wherein this graphite paper body thickness is between 23 microns to 300 microns, and the thermal conductivity factor scope of this graphite paper body is between 1200 to 6000W/m ℃.
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Cited By (6)
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| CN105885804A (en) * | 2016-05-26 | 2016-08-24 | 哈尔滨工程大学 | Method for preparing graphene all-carbon composite thermal interface material |
| CN106675074A (en) * | 2015-11-10 | 2017-05-17 | 中原大学 | Graphene thin body and manufacture method thereof |
| CN107686109A (en) * | 2017-07-17 | 2018-02-13 | 青岛超碳新材料科技有限公司 | A kind of preparation method of the double-deck carbon-based heat conduction film of high performance graphite graphene |
| CN110451965A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | The production technology of the artificial synthesized graphite film of super thick |
| CN111326591A (en) * | 2018-11-29 | 2020-06-23 | 东泰高科装备科技有限公司 | Flexible solar cell and preparation method thereof |
| CN112897522A (en) * | 2021-03-26 | 2021-06-04 | 浙江华熔科技有限公司 | Ultrathin heat-conducting graphite film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106675074A (en) * | 2015-11-10 | 2017-05-17 | 中原大学 | Graphene thin body and manufacture method thereof |
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| CN107686109A (en) * | 2017-07-17 | 2018-02-13 | 青岛超碳新材料科技有限公司 | A kind of preparation method of the double-deck carbon-based heat conduction film of high performance graphite graphene |
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| CN110451965A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | The production technology of the artificial synthesized graphite film of super thick |
| CN112897522A (en) * | 2021-03-26 | 2021-06-04 | 浙江华熔科技有限公司 | Ultrathin heat-conducting graphite film and preparation method thereof |
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Application publication date: 20140326 |