CN105584121A - Graphite heat diffusion sheet for tablet personal computer and mobile phone - Google Patents
Graphite heat diffusion sheet for tablet personal computer and mobile phone Download PDFInfo
- Publication number
- CN105584121A CN105584121A CN201610138529.9A CN201610138529A CN105584121A CN 105584121 A CN105584121 A CN 105584121A CN 201610138529 A CN201610138529 A CN 201610138529A CN 105584121 A CN105584121 A CN 105584121A
- Authority
- CN
- China
- Prior art keywords
- graphite
- plastic film
- diffusion sheet
- black plastic
- mobile phone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 56
- 239000010439 graphite Substances 0.000 title claims abstract description 56
- 238000009792 diffusion process Methods 0.000 title claims abstract description 39
- 239000002985 plastic film Substances 0.000 claims abstract description 30
- 229920006255 plastic film Polymers 0.000 claims abstract description 30
- 239000003292 glue Substances 0.000 claims abstract description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 229920006289 polycarbonate film Polymers 0.000 claims description 4
- 229920000297 Rayon Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229920000715 Mucilage Polymers 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 20
- 229910052802 copper Inorganic materials 0.000 description 20
- 239000010949 copper Substances 0.000 description 20
- 239000004417 polycarbonate Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Carbon And Carbon Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a graphite heat diffusion sheet for a tablet personal computer and a mobile phone. The heat diffusion sheet comprises a black plastic film, a graphite sheet and a two-face glue layer which are sequentially arranged from top to bottom, wherein the two-face glue layer is attached to the lower surface of the graphite sheet. The black plastic film adheres to the upper surface of the graphite sheet through mucilage glue. The surface of the black plastic film is of an uneven fog face structure. The contact area of the surface and air is increased due to the uneven fog face of the black plastic film, then the surface is processed to be black, the two factors beneficial to heat diffusion are combined together to increase the heat diffusion rate of the black plastic film to air, then the heat convection conduction of the whole diffusion sheet to air is improved by means of the good horizontal heat conductivity of the graphite sheet, and the purpose of rapid heat absorption and diffusion is achieved. The heat diffusion sheet has the good heat diffusion performance, coating and high-temperature baking are not needed in the manufacturing process, no dust pollution is caused in the production and preparation process, the production technology is simple, and the cost is low.
Description
Technical field
The present invention relates to a kind of graphite thermal diffusion sheet, particularly a kind of panel computer and mobile phone graphite thermal diffusion sheet.
Background technology
Existing tablet PC and mobile phone are made up of graphite copper sheet or electrographite sheet with fin, although electrographite sheet effect is very good, but price is high, use seldom, the radiating effect of graphite copper sheet is better than naked copper sheet, but graphite will be coated on copper sheet while making, need complex apparatus and 300-400 degree high-temperature baking, production cost is more high than naked copper sheet, and the manufacture environmental pollution of nano level graphite powder is very serious, and graphite copper sheet radiating effect only exceeds 1/5 than naked copper sheet. Again because the graphite linings on graphite copper sheet surface has good electrical conductivity, if be contained in tablet PC and mobile phone, because of tablet PC and interior of mobile phone space little, be covered with wiring board, for avoiding short circuit, so when graphite copper sheet is contained in little interior volume, its surperficial graphite linings need to cover with nonconducting film. But the porosity characteristic of graphite surface is covered by film like this, little while not covering film with the contact area rate of air, therefore it is not good to be covered with graphite copper sheet thermal diffusivity after film, little with naked copper difference, and graphite copper sheet will 1/5 than naked copper heat diffusion properties in the time not covering film. In tablet PC and this little space utilization of mobile phone, graphite copper sheet cannot have been given play to its advantage.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide the good panel computer of a kind of low cost and thermal diffusivity and mobile phone graphite thermal diffusion sheet.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions: a kind of panel computer and mobile phone thermal diffusion sheet, this thermal diffusion sheet comprises black plastic film, the graphite flake setting gradually from top to bottom and the layers of two-sided that is attached to graphite flake lower surface, described black plastic film is bonded in the upper surface of graphite flake by viscose glue, described black plastic film is rough cloudy surface structure.
Further, described black plastic film is poly terephthalic acid film or polycarbonate film.
Further, the thickness of described black plastic film is 0.005mm-0.05mm.
Further, the thickness of described graphite flake is 0.025-0.5mm.
Further, the thickness of described layers of two-sided is 0.01mm-0.07mm.
The invention has the beneficial effects as follows: the black plastic film with rough cloudy surface is directly attached to graphite flake surface by the present invention, thereby rough cloudy surface has increased the contact area of its surface with air, add surface treatment and become black, these two the favourable factor of thermal diffusion is combined and increased the thermal diffusivity of the surface of black plastic film to air, utilize preferably horizontal pyroconductivity of graphite flake simultaneously, thereby increase the thermal convection current conduction of whole graphite thermal diffusion sheet to air, reached the object of rapid heat absorption and heat radiation. Non-conductive because of the black plastic film in the present invention again, can paste again one deck insulation film, form one than the better more cheap fin of graphite copper sheet. In addition, graphite thermal diffusion sheet of the present invention, in the time making, only need simple laminating machine, and this thermal diffusion sheet integral thickness as thin as a wafer, can tackle the packing problem of small space completely. Graphite thermal diffusion sheet of the present invention not only has than traditional better thermal diffusivity of graphite copper sheet, and does not need coating and high-temperature baking in the time making, and manufacture no dust pollution, and production technology is simple, and cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of panel computer of the present invention and mobile phone graphite thermal diffusion sheet.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
As shown in Figure 1, a kind of panel computer and mobile phone thermal diffusion sheet, this graphite thermal diffusion sheet comprises black plastic film 1, the graphite flake 2 setting gradually from top to bottom and the layers of two-sided 3 that is attached to copper sheet 2 lower surfaces, described black plastic film 1 is bonded in the upper surface of graphite flake 2 by viscose glue, described black plastic film 1 is rough cloudy surface structure.
Furtherly, black plastic film 1 wherein can be poly terephthalic acid film (PET film) or polycarbonate film (PC film).
Furtherly, the thickness of black plastic film 1 is wherein 0.005mm-0.05mm.
Furtherly, the thickness of copper sheet 2 is wherein 0.025-0.5mm.
Furtherly, the thickness of layers of two-sided 3 is wherein 0.01mm-0.07mm.
In the time making this graphite thermal diffusion sheet, taking 0.025mm-0.5mm graphite flake 2 as base material, upper surface sticks black plastic film 1(poly terephthalic acid film or the polycarbonate film that thickness is 0.05mm-0.05mm), and the surface treatment of this black plastic film 1 becomes rough cloudy surface structure, lower surface sticks the layers of two-sided 3 that thickness is 0.01mm-0.07mm, the compound formation thermal diffusion sheet of three, applies on tablet PC and handheld communication machine.
Because graphite flake 2 has the pyroconductivity of good X-Y horizontal plane direction, the pyroconductivity of this horizontal plane direction is 500W/mk, but thermal radiation rate in the Z direction perpendicular to horizontal plane is very poor. So as radiating element, existing technical be on graphite flake, to do a lot of fins, to increase the surface area contacting with air, but this structure is used on the panel computer or mobile phone of small space, will be difficult to insert in casing. And the black plastic film 1 that graphite thermal diffusion sheet of the present invention is cloudy surface by surface is directly attached to graphite flake 2 surfaces. Thereby, the rough cloudy surface of black plastic film has increased the contact area of its surface with air, add surface treatment and become black, and then these two combined and increased the thermal diffusivity of the surface of black plastic film to air the favourable factor of thermal diffusion, make whole graphite thermal diffusion sheet there is the thermal radiation rate in Z direction preferably. Thereby, utilize the summation characteristic of the thermal radiation rate in the graphite flake 2 preferably Z direction that preferably the black plastic film 1 of horizontal pyroconductivity and cloudy surface brings, increase the thermal convection current conduction of whole thermal diffusion sheet to air, reached the object of rapid heat absorption and heat radiation.
Black plastic film 1 in the present invention is non-conductive, can paste one deck insulation film again, forms one than the better more cheap fin of graphite copper sheet. On processing procedure, thermal diffusion sheet of the present invention only needs simple laminating machine, and this thermal diffusion sheet integral thickness as thin as a wafer, can tackle the packing problem of small space completely. Graphite thermal diffusion sheet of the present invention not only has than traditional better thermal diffusivity of graphite copper sheet, and does not need coating and high-temperature baking in the time making, and manufacture no dust pollution, and production technology is simple, and cost is low.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included within the scope of patent protection model of the present invention.
Claims (5)
1. a panel computer and mobile phone graphite thermal diffusion sheet, it is characterized in that: this thermal diffusion sheet comprises black plastic film, the graphite flake setting gradually from top to bottom and the layers of two-sided that is attached to graphite flake lower surface, described black plastic film is bonded in the upper surface of graphite flake by viscose glue, the surface of described black plastic film is rough cloudy surface structure.
2. panel computer according to claim 1 and mobile phone thermal diffusion sheet, is characterized in that: described black plastic film is poly terephthalic acid film or polycarbonate film.
3. panel computer according to claim 1 and mobile phone graphite thermal diffusion sheet, is characterized in that: the thickness of described black plastic film is 0.005mm-0.05mm.
4. panel computer according to claim 1 and mobile phone graphite thermal diffusion sheet, is characterized in that: the thickness of described graphite flake is 0.025-0.5mm.
5. panel computer according to claim 1 and mobile phone graphite thermal diffusion sheet, is characterized in that: the thickness of described layers of two-sided is 0.01mm-0.07mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138529.9A CN105584121A (en) | 2016-03-11 | 2016-03-11 | Graphite heat diffusion sheet for tablet personal computer and mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138529.9A CN105584121A (en) | 2016-03-11 | 2016-03-11 | Graphite heat diffusion sheet for tablet personal computer and mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105584121A true CN105584121A (en) | 2016-05-18 |
Family
ID=55924189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610138529.9A Pending CN105584121A (en) | 2016-03-11 | 2016-03-11 | Graphite heat diffusion sheet for tablet personal computer and mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105584121A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719995B2 (en) * | 1987-04-24 | 1995-03-06 | 日本ピラ−工業株式会社 | Electromagnetic shield material |
| CN202936351U (en) * | 2012-10-15 | 2013-05-15 | 斯迪克新型材料（江苏）有限公司 | Ultrathin graphite heat conducting adhesive tape |
| CN202941075U (en) * | 2012-11-01 | 2013-05-15 | 苏州斯迪克新材料科技股份有限公司 | Combined-type graphite heat radiation sheet |
| CN202941077U (en) * | 2012-11-01 | 2013-05-15 | 斯迪克新型材料（江苏）有限公司 | Graphite heat radiation structure for electronic product |
| CN204462998U (en) * | 2014-12-03 | 2015-07-08 | 昆山奇华印刷科技有限公司 | Panel computer and mobile phone thermal diffusion sheet |
-
2016
- 2016-03-11 CN CN201610138529.9A patent/CN105584121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719995B2 (en) * | 1987-04-24 | 1995-03-06 | 日本ピラ−工業株式会社 | Electromagnetic shield material |
| CN202936351U (en) * | 2012-10-15 | 2013-05-15 | 斯迪克新型材料（江苏）有限公司 | Ultrathin graphite heat conducting adhesive tape |
| CN202941075U (en) * | 2012-11-01 | 2013-05-15 | 苏州斯迪克新材料科技股份有限公司 | Combined-type graphite heat radiation sheet |
| CN202941077U (en) * | 2012-11-01 | 2013-05-15 | 斯迪克新型材料（江苏）有限公司 | Graphite heat radiation structure for electronic product |
| CN204462998U (en) * | 2014-12-03 | 2015-07-08 | 昆山奇华印刷科技有限公司 | Panel computer and mobile phone thermal diffusion sheet |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |
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| WD01 | Invention patent application deemed withdrawn after publication |