CN103663415A - Novel graphite flake and manufacturing method thereof - Google Patents
Novel graphite flake and manufacturing method thereof Download PDFInfo
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- CN103663415A CN103663415A CN201210326017.7A CN201210326017A CN103663415A CN 103663415 A CN103663415 A CN 103663415A CN 201210326017 A CN201210326017 A CN 201210326017A CN 103663415 A CN103663415 A CN 103663415A
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- graphite flake
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- novel graphite
- sintering furnace
- vacuum sintering
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Abstract
The invention discloses a novel graphite flake and a manufacturing method thereof. The graphite flake consists of graphene and is in a coiled structure, and the size of the graphite flake is 400m*50m. The method comprises the steps of placing a polyesterimide thin film in the coiled structure into a barrel, and placing the barrel into a vacuum sintering furnace; gradually heating the vacuum sintering furnace to 3000 DEG C at a rate of 2-5 DEG C/minute so as to gradually dehydrogenize, deoxygenate and denitrify the polyesterimide thin film in the heating process; cooling to room temperature to obtain a product. The novel graphite flake in the coiled structure is formed by the method, and the limit on conventional process is broken, so that the size of the graphite flake can reach 400m*50m. The novel graphite flake can be tailored and applied according to products in different small sizes, and the whole coil can be applied to large equipment, thereby not only improving the heat dissipation and heat conducting performance of the graphite flake, but also preventing complexity and inconvenience in the operating process, reducing the labor intensity of operators and saving time and labor.
Description
Technical field
Thermally conductive material field, particularly graphite flake of a kind of artificial coiled material and preparation method thereof the present invention relates to dispel the heat.
Background technology
In recent years, development along with electronic technology, electronic product is constantly updated and is regenerated, the size of its work package is more and more less, speed and the efficiency of work are more and more higher, and its thermal value is also increasing, therefore not only require it to be equipped with corresponding heat abstractor, also to guarantee that heat abstractor has stronger heat-sinking capability, to guarantee the reliability of product performance and to extend its work-ing life.
Graphite radiating thermally conductive material, because its distinctive low density (with respect to metal species) and high heat radiation thermal conductivity and low thermal resistance become the preferred material that hyundai electronics series products solves heat radiation heat conduction technology.Graphite heat radiation fin not only can be along horizontal heat conduction, and vertically heat conduction is especially used laminar structuredly, not only can make better its surface that is applicable to any product, also can effectively play the effect of heat radiation heat conduction.In actual applications, due to all restrictions on technology and equipment, make the size of the graphite heat radiation fin of whole piece sheet structure all be less than 230mm * 180mm, for the product that size is little, can directly apply, and for the large product of size, as main equipment etc. needs two or two to splice above, so not only can affect the performance of its heat radiation heat conduction, also can, because splicing brings the complicated and inconvenient of operation, in use be subject to certain limitation.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of novel graphite sheet and preparation method thereof, utilize coil structure that the size of graphite flake is increased, to reach entire volume applicable to the object on main equipment.
For achieving the above object, technical scheme of the present invention is as follows:
A novel graphite sheet, described graphite flake is comprised of Graphene, and it is coil structure, and the size dimension of described graphite flake is 400m * 50m.
A making method for novel graphite sheet, the method comprises the following steps:
A, polyester-imide film is positioned in drum, and described drum is put into vacuum sintering furnace;
B, described vacuum sintering furnace is warming up to 3000 ℃ gradually with per minute 2-5 ℃, makes the dehydrogenation in temperature-rise period of described polyester-imide film, deoxidation, denitrogenation, make it form the graphite flake being formed by multi-layer graphene;
C, be cooled to room temperature, obtain product.
Preferably, described polyester-imide film is coil structure.
Preferably, on the surface of described drum, be provided with some through holes.
Pass through technique scheme, novel graphite sheet provided by the invention and preparation method thereof, by starting material polyester-imide film is positioned in drum, and it is put into the vacuum sintering furnace heating up gradually together, make the dehydrogenation of polyester-imide film, deoxidation, denitrogenation, and then formed web-like take the novel graphite sheet of Graphene as forming, broken the restriction of traditional technology, make the size of this graphite flake can reach 400m * 50m, not only can cut out and apply according to the undersized product of difference, can also make entire volume be applied on main equipment, not only improved the heat radiation heat conductivility of this graphite flake, also avoided complicated and inconvenient in operating process, reduced operator's labour intensity, save time and laborsaving.
Embodiment
Below the technical scheme in the present invention is clearly and completely described.
A kind of novel graphite sheet provided by the invention, this graphite flake is comprised of Graphene, and it is coil structure, and the size dimension of this graphite flake is 400m * 50m.
The making method of a kind of novel graphite sheet provided by the invention, the method comprises the following steps:
A, the polyester-imide film of coil structure is positioned in drum, and drum is put into vacuum sintering furnace, on the surface of this drum, be provided with some through holes;
B, vacuum sintering furnace is warming up to 3000 ℃ gradually with per minute 2-5 ℃, makes polyester-imide film dehydrogenation gradually, deoxidation, denitrogenation in temperature-rise period, make it form the graphite flake being comprised of multi-layer graphene, hydrogen, oxygen, nitrogen shed by the through hole of drum;
C, be cooled to room temperature, obtain product.
A kind of novel graphite sheet disclosed by the invention and preparation method thereof, by starting material polyester-imide film is positioned in drum, and it is put into the vacuum sintering furnace heating up gradually together, make the dehydrogenation of polyester-imide film, deoxidation, denitrogenation, and then formed web-like take the novel graphite sheet of Graphene as forming, broken the restriction of traditional technology, make the size of this graphite flake can reach 400m * 50m, not only can cut out and apply according to the undersized product of difference, can also make entire volume be applied on main equipment, not only improved the heat radiation heat conductivility of this graphite flake, also avoided complicated and inconvenient in operating process, reduced operator's labour intensity, save time and laborsaving.Meanwhile, the increase due to the size of this graphite flake, can reach heat beyond meter Yuan it, reaches the effect of better heat radiation heat conduction.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a novel graphite sheet, is characterized in that, described graphite flake is comprised of Graphene, and it is coil structure, and the size dimension of described graphite flake is 400m * 50m.
2. a making method for novel graphite sheet, is characterized in that, the method comprises the following steps:
A, polyester-imide film is positioned in drum, and described drum is put into vacuum sintering furnace;
B, described vacuum sintering furnace is warming up to 3000 ℃ gradually with per minute 2-5 ℃, makes the dehydrogenation in temperature-rise period of described polyester-imide film, deoxidation, denitrogenation, make it form the graphite flake being formed by multi-layer graphene;
C, be cooled to room temperature, obtain product.
3. the making method of a kind of novel graphite sheet according to claim 2, is characterized in that, described polyester-imide film is coil structure.
4. the making method of a kind of novel graphite sheet according to claim 2, is characterized in that, is provided with some through holes on the surface of described drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326017.7A CN103663415A (en) | 2012-09-06 | 2012-09-06 | Novel graphite flake and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326017.7A CN103663415A (en) | 2012-09-06 | 2012-09-06 | Novel graphite flake and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN103663415A true CN103663415A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210326017.7A Pending CN103663415A (en) | 2012-09-06 | 2012-09-06 | Novel graphite flake and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829930A (en) * | 2017-02-27 | 2017-06-13 | 深圳丹邦科技股份有限公司 | A kind of web-like continuous graphite alkene film and preparation method thereof |
| CN106892661A (en) * | 2015-12-18 | 2017-06-27 | 李新勇 | Aromatization Graphene section bar preparation technology |
| US10676362B2 (en) | 2017-02-27 | 2020-06-09 | Shenzhen Danbond Technology Co., Ltd | Roll-shaped and continuous graphene film and manufacturing method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008005022A1 (en) * | 2006-07-05 | 2008-01-10 | Owens Corning Intellectual Capital, Llc | Polymer foams containing multi-functional layered nano-graphite |
| CN101306327A (en) * | 2008-07-08 | 2008-11-19 | 大连理工大学 | Spiral carbon membrane and preparation method thereof |
| CN102583345A (en) * | 2012-02-15 | 2012-07-18 | 昆山汉品电子有限公司 | Preparation method of graphene coil stock |
-
2012
- 2012-09-06 CN CN201210326017.7A patent/CN103663415A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008005022A1 (en) * | 2006-07-05 | 2008-01-10 | Owens Corning Intellectual Capital, Llc | Polymer foams containing multi-functional layered nano-graphite |
| CN101306327A (en) * | 2008-07-08 | 2008-11-19 | 大连理工大学 | Spiral carbon membrane and preparation method thereof |
| CN102583345A (en) * | 2012-02-15 | 2012-07-18 | 昆山汉品电子有限公司 | Preparation method of graphene coil stock |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106892661A (en) * | 2015-12-18 | 2017-06-27 | 李新勇 | Aromatization Graphene section bar preparation technology |
| CN106829930A (en) * | 2017-02-27 | 2017-06-13 | 深圳丹邦科技股份有限公司 | A kind of web-like continuous graphite alkene film and preparation method thereof |
| CN106829930B (en) * | 2017-02-27 | 2019-09-13 | 深圳丹邦科技股份有限公司 | A kind of web-like continuous graphite alkene film and preparation method thereof |
| US10676362B2 (en) | 2017-02-27 | 2020-06-09 | Shenzhen Danbond Technology Co., Ltd | Roll-shaped and continuous graphene film and manufacturing method therefor |
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Application publication date: 20140326 |