CN203675528U - Graphite film heat conduction radiating fin with wrinkle structure - Google Patents
Graphite film heat conduction radiating fin with wrinkle structure Download PDFInfo
- Publication number
- CN203675528U CN203675528U CN201420026193.3U CN201420026193U CN203675528U CN 203675528 U CN203675528 U CN 203675528U CN 201420026193 U CN201420026193 U CN 201420026193U CN 203675528 U CN203675528 U CN 203675528U
- Authority
- CN
- China
- Prior art keywords
- graphite film
- graphite
- heat
- layer
- radiating fin
- 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.)
- Expired - Fee Related
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 53
- 239000010439 graphite Substances 0.000 title claims abstract description 53
- 230000037303 wrinkles Effects 0.000 title abstract 3
- 239000011888 foil Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011889 copper foil Substances 0.000 claims description 7
- 229920002799 BoPET Polymers 0.000 claims description 6
- 239000005030 aluminium foil Substances 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims description 2
- -1 Hou Du≤0.05mm Substances 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000002969 artificial stone Substances 0.000 claims 1
- 229920002521 macromolecule Polymers 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract 2
- 230000005855 radiation Effects 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Abstract
The utility model provides a graphite film heat conduction radiating fin with a wrinkle structure, and belongs to the technical field of a heat conduction heat dissipation material. The product is composed of an intermediate layer, an isolation type layer and a metallic foil layer. The intermediate layer is a graphite film arranged in a wrinkle form so as to improve the vertical heat conduction capability of the product; the metallic foil layer can improves the heat dissipation performance of the product; and the isolation type layer can improves the mechanical property and processing performance of the graphite film. The heat conduction and heat dissipation efficiencies of such a structure are high, the size is small, the weight is light, integrated design of heat conduction and heat dissipation is realized, and heat can be rapidly conducted and dissipated.
Description
Technical field
The utility model belongs to heat conduction and heat radiation material technology field.
Background technology
In recent years, along with the develop rapidly of 3G network, the electronic products such as smart phone, panel computer become the important component part of people's life gradually." thinner, gentlier, faster ", the volume of many electronic products is more and more less, and caloric value is increasing, and the derivation that can the heat producing in the electronic product course of work quick, safe directly affects stability, life-span and the security performance of electronic product.
Traditional metallic copper, aluminium heat conduction and heat radiation material difficulty have met the lightening requirement of electronic device, an urgent demand Novel heat-conducting heat sink material.
In recent years, graphite film is because its low-density (with Metal Phase ratio), high thermal conductivity coefficient become the desirable heat conduction and heat radiation material of modern electronic product.At present Delanium thermal conductivity of film can to reach 1800W/mK(horizontal), be metallic copper (401W/mK), aluminium (237W/mK) 4 ~ 6 times, be the heat conduction and heat radiation material of new generation most with application potential.
Under normal circumstances graphite film is bonded to the surface of heater members, relies on the conduction of graphite film in-plane Rapid Thermal that heat is on average passed to whole graphite film surface.At graphite film surface-coated PET antistatic backing, can strengthen mechanical strength, toughness and the bending machining performance of graphite film.
At present have two kinds of preparation methods for the graphite film of heat conduction, one is that expanded graphite rolls film forming.This kind of graphite film is not all very desirable in thermal conductivity, conductivity and mechanical properties, and in film, easily exists acid to retain, but cost is extremely low; Another kind method is the graphite film of the polymeric membrane high oriented crystallization that directly graphitization forms in inert atmosphere.Heat conduction, the electric conductivity excellence of graphite film prepared by this kind of method, cost of manufacture is higher.
The graphite film no matter which kind of method is produced, due to the intrinsic architectural feature of graphite, causes graphite film at in-plane
The thermal conductivity high (>=1500W/mK) of (laterally), and be only (1 ~ 5W/mK) perpendicular to the thermal conductivity of membrane plane direction (longitudinally).Just because of this, while adopting in patent [200820224451.3] graphite film glue vertical with aluminium or Copper Foil to connect, the longitudinal heat conducting speed of graphite film is limited, and Yin Er can longitudinally penetrate graphite film and also very limited by aluminium or the quick dispersed heat of Copper Foil.
Therefore, design a kind of heat conduction and heat-radiating integrated device, have ultra-thin, lighter, efficient feature concurrently, in limited space, realizing the quick transmission of heat scatters and disappears with efficient, the chip operation temperature that reduces in time high performance slim large-screen touch-control electronic equipment (smart mobile phone and panel computer) is very necessary.
Summary of the invention
Problem to be solved of the present utility model is that the longitudinal heat-conductive characteristic of common graphite film radiating element is poor, radiating efficiency
Lower shortcoming, provides lightweight, good heat dissipation effect, a kind of graphite film heat conducting and heat radiating fin easy for installation, and it has longitudinal height
The feature of thermal conductivity and high efficiency and heat radiation, is applied to the heat conduction and heat radiation field of electronic product.
The utility model provides a kind of graphite film heat conducting and heat radiating fin with pleated structure, and it comprises metal foil layer, intermediate layer
And release layer.
Intermediate layer is the graphite rete with pleated structure, and its thickness is at 0.02 ~ 0.05mm, horizontal and vertical all have high
Thermal conduction rate.
Metal foil layer is Copper Foil or aluminium foil, and thick degree≤0.05mm is filled with thermal conductive silicon between metal foil layer and graphite rete
Fat.
Release layer is PET gum layer, is made up of PET film and acrylic compounds glue.Wherein Fen Bu You in PET rete≤
The carbon black of 10wt.%.
The utility model has the advantage of: by changing the arrangement mode of graphite film, realized vertical direction and in-plane
Rapid Thermal conduction and the integrated design of heat conduction and heat radiation, be a kind of novel efficient, ultra-thin, ultralight heat conduction and heat radiation device, suitable
For the field of radiating of electronic product.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of a kind of graphite film heat conducting and heat radiating fin with pleated structure of the utility model;
Accompanying drawing 2 is the utility model application schematic diagrames during for chip cooling.
Embodiment
Specific embodiment 1: a kind of graphite film heat conducting and heat radiating fin with pleated structure, comprises red copper Copper Foil heat dissipating layer, graphite
Heat-conducting layer and PET gum layer.Graphite film adopts high temperature pyrolysis graphite film, and graphite film thickness is advisable and is ground through mould at 0.025mm
Be pressed into fold overlay structure, compound with red copper foil after surface-coated silicon grease material.The thickness of red copper foil is 0.025mm.Graphite film
Opposite side applies acrylic compounds glue and PET film rolls compound.PET film thickness 0.02mm, heatproof warm area-20 ~ 150 DEG C.?
Eventually compound rear obtained graphite heat conducting and heat radiating fin, integral thickness is at 0.085 ± 0.005mm, longitudinally thermal conductivity 35W/mK,
Transverse thermal conductivity 1150W/mK.
Specific embodiment 2: a kind of graphite film heat conducting and heat radiating fin with pleated structure, comprises porous aluminium foil heat dissipating layer, graphite
Heat conduction rete and release layer.Aluminium foil adopts porous foam aluminium foil, and aperture is at 20nm ~ 800nm, and aluminum foil thickness is at 80 microns;
Graphite film adopts expanded graphite laminate, realizes the buckle fold structure of graphite film after honeycomb die compacting; Release layer is
PET film, is wherein distributed with the conductive carbon black of 5wt.%.Adopt technique and the step identical with embodiment 1, make composite construction graphite heat conducting and heat radiating fin, integral thickness is in about 0.115mm, longitudinally thermal conductivity 22W/mK, transverse thermal conductivity
780W/m·K。
Claims (4)
1. a graphite film heat conducting and heat radiating fin with pleated structure, is characterized by three-decker, and intermediate layer is graphite rete, both sides
Be respectively metal foil layer and release layer, between metal foil layer and graphite film, adopt heat-conducting silicone grease bonding, release layer and graphite rete are adopted
Connect with acrylic compounds is gluing.
2. a kind of graphite film heat conducting and heat radiating fin with pleated structure described in claim 1, behaves and makes graphite film through overlapping in its intermediate layer
Arrangement forms pleated structure, and artificial stone ink film comprises high oriented graphite film and the expansion that certain kinds macromolecule membrane high temperature pyrolysis forms
Graphite is through rolling the expandable graphite sheet forming.
3. a kind of graphite film heat conducting and heat radiating fin with pleated structure described in claim 1, its release layer is PET film, glue-line is third
Olefin(e) acid class glue, the wherein conductive carbon black of Fen Bu You≤10wt.% in PET layer, the Hou Du≤0.05mm of PET film.
4. a kind of graphite film heat conducting and heat radiating fin with pleated structure described in claim 1, its metal foil layer is characterised in that: Copper Foil or
Aluminium foil, Hou Du≤0.05mm, metal foil layer surface is smooth or rough surface, can be also the metal level of porous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026193.3U CN203675528U (en) | 2014-01-16 | 2014-01-16 | Graphite film heat conduction radiating fin with wrinkle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026193.3U CN203675528U (en) | 2014-01-16 | 2014-01-16 | Graphite film heat conduction radiating fin with wrinkle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203675528U true CN203675528U (en) | 2014-06-25 |
Family
ID=50971768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026193.3U Expired - Fee Related CN203675528U (en) | 2014-01-16 | 2014-01-16 | Graphite film heat conduction radiating fin with wrinkle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203675528U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648428A (en) * | 2015-12-28 | 2016-06-08 | 东莞市青麦田数码科技有限公司 | Light heat dissipation film with sandwich structure and preparation method for light heat dissipation film |
| CN106972096A (en) * | 2016-10-26 | 2017-07-21 | 湾城公司 | A kind of heat-dissipating structure body and application |
| CN107041100A (en) * | 2015-11-02 | 2017-08-11 | Abb技术有限公司 | Power electronics component |
| CN107031144A (en) * | 2017-04-19 | 2017-08-11 | 江苏联科纳米科技有限公司 | A kind of high efficiency and heat radiation metal foil and preparation method and application |
| CN107109155A (en) * | 2015-09-07 | 2017-08-29 | 日东电工株式会社 | Graphite flake bonding sheet |
| WO2018002754A1 (en) * | 2016-06-27 | 2018-01-04 | International Business Machines Corporation | Thermal interface material structures |
| CN108531144A (en) * | 2018-06-15 | 2018-09-14 | 宁波杉越新材料有限公司 | A kind of nested multilayer laminar pleated structure heat-conducting article and preparation method thereof |
| CN108531143A (en) * | 2018-06-15 | 2018-09-14 | 宁波杉越新材料有限公司 | A kind of stratiform pleated structure heat-conducting article |
| CN108769342A (en) * | 2018-05-04 | 2018-11-06 | 珠海格力电器股份有限公司 | A kind of mobile phone battery cover and mobile phone |
| CN111818764A (en) * | 2020-07-17 | 2020-10-23 | 江苏中商碳素研究院有限公司 | Carbon radiating fin and preparation method thereof |
| US11037860B2 (en) | 2019-06-27 | 2021-06-15 | International Business Machines Corporation | Multi layer thermal interface material |
| CN113292971A (en) * | 2021-06-01 | 2021-08-24 | 江西德思恩新材料有限公司 | Artificial graphite film with enhanced tensile strength for heat dissipation function and preparation method thereof |
| US11774190B2 (en) | 2020-04-14 | 2023-10-03 | International Business Machines Corporation | Pierced thermal interface constructions |
| CN108531143B (en) * | 2018-06-15 | 2024-05-14 | 宁波杉越新材料有限公司 | Layered fold structure heat conduction product |
-
2014
- 2014-01-16 CN CN201420026193.3U patent/CN203675528U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107109155A (en) * | 2015-09-07 | 2017-08-29 | 日东电工株式会社 | Graphite flake bonding sheet |
| CN107109155B (en) * | 2015-09-07 | 2018-08-28 | 日东电工株式会社 | Graphite flake bonding sheet |
| CN107041100A (en) * | 2015-11-02 | 2017-08-11 | Abb技术有限公司 | Power electronics component |
| CN105648428B (en) * | 2015-12-28 | 2018-04-10 | 东莞市义仁汽车租赁有限公司 | A kind of lightweight heat dissipation film of sandwich structure and preparation method thereof |
| CN105648428A (en) * | 2015-12-28 | 2016-06-08 | 东莞市青麦田数码科技有限公司 | Light heat dissipation film with sandwich structure and preparation method for light heat dissipation film |
| US10182514B2 (en) | 2016-06-27 | 2019-01-15 | International Business Machines Corporation | Thermal interface material structures |
| WO2018002754A1 (en) * | 2016-06-27 | 2018-01-04 | International Business Machines Corporation | Thermal interface material structures |
| US11013147B2 (en) | 2016-06-27 | 2021-05-18 | International Business Machines Corporation | Thermal interface material structures |
| US10653037B2 (en) | 2016-06-27 | 2020-05-12 | International Business Machines Corporation | Thermal interface material structures |
| CN106972096A (en) * | 2016-10-26 | 2017-07-21 | 湾城公司 | A kind of heat-dissipating structure body and application |
| CN107031144A (en) * | 2017-04-19 | 2017-08-11 | 江苏联科纳米科技有限公司 | A kind of high efficiency and heat radiation metal foil and preparation method and application |
| CN108769342A (en) * | 2018-05-04 | 2018-11-06 | 珠海格力电器股份有限公司 | A kind of mobile phone battery cover and mobile phone |
| CN108531143A (en) * | 2018-06-15 | 2018-09-14 | 宁波杉越新材料有限公司 | A kind of stratiform pleated structure heat-conducting article |
| CN108531144A (en) * | 2018-06-15 | 2018-09-14 | 宁波杉越新材料有限公司 | A kind of nested multilayer laminar pleated structure heat-conducting article and preparation method thereof |
| CN108531144B (en) * | 2018-06-15 | 2023-09-22 | 宁波杉越新材料有限公司 | Nested multi-layer lamellar fold structure heat conduction product and preparation method thereof |
| CN108531143B (en) * | 2018-06-15 | 2024-05-14 | 宁波杉越新材料有限公司 | Layered fold structure heat conduction product |
| US11037860B2 (en) | 2019-06-27 | 2021-06-15 | International Business Machines Corporation | Multi layer thermal interface material |
| US11774190B2 (en) | 2020-04-14 | 2023-10-03 | International Business Machines Corporation | Pierced thermal interface constructions |
| CN111818764A (en) * | 2020-07-17 | 2020-10-23 | 江苏中商碳素研究院有限公司 | Carbon radiating fin and preparation method thereof |
| CN113292971A (en) * | 2021-06-01 | 2021-08-24 | 江西德思恩新材料有限公司 | Artificial graphite film with enhanced tensile strength for heat dissipation function and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 |