CN201785338U - Composite heat-dissipating graphite material - Google Patents
Composite heat-dissipating graphite material Download PDFInfo
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- CN201785338U CN201785338U CN2010202824126U CN201020282412U CN201785338U CN 201785338 U CN201785338 U CN 201785338U CN 2010202824126 U CN2010202824126 U CN 2010202824126U CN 201020282412 U CN201020282412 U CN 201020282412U CN 201785338 U CN201785338 U CN 201785338U
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Abstract
The utility model provides a composite heat-dissipating graphite material, which belongs to the field of heat-dissipating products and comprises a graphite material body and a surface hot melting type metal body which is leveled with the surface of the graphite material body or higher than the graphite material body. The composite heat-dissipating graphite material enhances the combination of the heat-dissipating material and a heating component and also improves the heat-dissipating performance.
Description
Technical field
The utility model belongs to the heat sink article field, the structure formation that particularly a kind of height of realizing by graphite products dispels the heat.
Background technology
Current, the tempo of various electronic products is very fast.Such as, notebook computer or mobile phone that we often use, its arithmetic speed is more and more faster, function from strength to strength, size is more and more littler simultaneously.Can also in this case, when the performance of computer is promoted, reduce size? on the basis of development related hardware technology and software engineering, also have a great difficulty to overcome, be exactly the heat dissipation problem of product.
How to solve the heat dissipation problem of product, various solutions are arranged.Current electronic product, such as, the arithmetic processor of notebook computer is provided with compulsory fan usually, and the radiator element that is used for dispelling the heat.The radiator element that is adopted mostly is the good copper product of the capacity of heat transmission.But, use heat sink material, there are some difficulties to overcome.At first, be exactly between heat sink material and the heat generating components, have the slit usually, this slit is either large or small, all can influence radiating efficiency.In addition, the heat dispersion of high heat sink material has decisive influence to radiating effect equally.
In recent years, graphite is subjected to numerous researchists' attention as high thermal conductivity material.Because the wetting property of graphite and metal is poor, the scientific research personnel proposes metals such as copper or aluminium are distributed in the graphite particle as engaging material, forms the decentralized compound system.For example, Chinese patent (application number 200580049340) has proposed a kind of high heat conductance graphite particle decentralized complex body and manufacture method thereof, the graphite particle curing that is covered with high heat conductance metals such as silver, copper, aluminium forms, by the volume ratio of regulation and control graphite particle and metal, the engaging force of regulation and control composite base material and relational structure.
The utility model content
The purpose of this utility model provides a kind of composite heat-conducting graphite material, thereby can realize good heat conduction function, and making has good intervention relation between product and the heat generating components.
Composite radiating graphite material described in the utility model, it comprises the graphite material body, this graphite material body is provided with the hot-melting type metallic object, wherein, described hot-melting type metallic object is by the hot-melting type metal base the formed metal dots of fusion to take place on the graphite material body under the condition of high temperature.
Further, described composite radiating graphite material also has following technical characterictic:
Described graphite material body is the laminate structure of being made up of graphite.
Described hot-melting type metal base is at least a in silver, gold, copper, the aluminium.
Described hot-melting type metallic object is arranged on the surface of graphite material body.
Described hot-melting type metallic object is on the surface that the regular distribution shape is arranged on the graphite material body.
The surface of described hot-melting type metallic object is surperficial equal with the graphite material body, or is higher than the surface of graphite material body.
Advantage of the present utility model is:
Composite radiating graphite material described in the utility model comprises the graphite material body, and this graphite material body is provided with the hot-melting type metallic object, and the surface of this hot-melting type metallic object is surperficial equal with the graphite material body, or is higher than the surface of graphite material body.Compare with conventional art, have following advantage:
(1) on the surface of graphite substrate the heat conductivility good metal is set, this metal forms the contact on graphite substrate surface, thereby has strengthened combining of heat sink material and heat generating components;
(2) adopt graphite to be used as heat sink material, thereby improve its heat dispersion.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is the structure iron of composite radiating graphite material described in the utility model.
Fig. 2 is the schema of the manufacture method of composite radiating graphite material described in the utility model.
Fig. 3 a is the synoptic diagram that forms a kind of embodiment of hot-melting type metallic object on the graphite material body, before the hot melt.
Fig. 3 b is the synoptic diagram that forms a kind of embodiment of hot-melting type metallic object on the graphite material body, behind the hot melt.
Embodiment
With reference to the accompanying drawings, in conjunction with specific embodiments the utility model is described further.
As shown in Figure 1, composite radiating graphite material 100 described in the utility model comprises graphite material body 200, and this graphite material body 200 is provided with hot-melting type metallic object 300.Wherein, described graphite material body 200 is by to graphite substrate, for example, at least a in pyrolytic graphite, kish and the natural graphite carries out mechanical workout, or carrying out that high temperature carbonization is handled and other forming processes obtain, its corresponding fusing point is generally more than 3000 ℃.Corresponding concrete radiator structure, structure that can prefabricated this graphite material body 200, for example, it can be unidimensional wire, strip, thread, banded, also lamelliforms such as the tetragon of two dimension, circle, Polygons, also structure such as three-dimensional hexahedron.In the utility model, for example and without limitation, as shown in Figure 1, described graphite material body 200 preferably has the two dimensional surface shape of laminate structure.
Aforesaid graphite material body 200 is provided with hot-melting type metallic object 300, and this hot-melting type metallic object 300 is by the hot-melting type metal base metal dots that fusion forms to take place on the graphite material body 200 under the condition of high temperature.It is arranged on the graphite material body 200 with the corresponding surface of heater block on, and be the regular distribution shape.Wherein, described hot-melting type metal base is at least a in the good silver of heat conductivility, gold, copper, the aluminium, and particularly, silver point is 961.8 ℃, and boiling point is 2213 ℃; The fusing point of gold is 1064 ℃, and boiling point is 2807 ℃; The fusing point of copper is 1083.4 ℃, and boiling point is 2567 ℃; The fusing point of aluminium is 660.4 ℃, and boiling point is 2467.0 ℃.
As innovative point of the present utility model, the surface of this hot-melting type metallic object 300 is surperficial equal with the graphite material body, or is higher than the surface of graphite material body.In the utility model, preferably the surface of hot-melting type metallic object 300 is higher than the surface of graphite material body.Like this, on the one hand, the contact of this hot-melting type metallic object 300 can be got involved in the heat generating components better, thereby has strengthened combining of heat sink material and heat generating components; On the other hand, hot-melting type metallic object 300 itself is the good thermally conductive material of heat dispersion, as the heat radiation contact that is arranged on the graphite material body 200, can quicken the conduction of heat, thereby reach better radiating effect.
It should be noted that in the utility model the surface of described hot-melting type metallic object is higher than the surface of graphite material body, its formation condition can comprise following one at least:
(1) heating mode by regulation and control graphite material body (for example, type of heating: microwave heating, electric-arc heating, resistance wire heating etc.), temperature rise rate (for example, 50 ℃/s is rapidly heated, 5 ℃/s etc. heats up at a slow speed) or the real time temperature (melting temperature of hot-melting type metal, perhaps, be higher than the melting temperature of hot-melting type metal and be lower than arbitrary temp between its boiling point), the fusion situation of control hot-melting type metal base on the graphite material body;
(2) rate of temperature fall by regulation and control graphite material body (for example, 80 ℃/s of fast cooling, 10 ℃/s etc. lowers the temperature at a slow speed) or cooling method (condensed fluid, as water, liquid nitrogen etc., air blast cooling etc.), form different cooling gradients, the curing situation of control hot-melting type metal base on the graphite material body.
The schema of the manufacture method of the composite radiating graphite material that reference is shown in Figure 2, as the hot-melting type metal base, its corresponding fusing point is 961.8 ℃ with argent, boiling point is 2213 ℃, specific as follows explanation.
Shown in Fig. 3 a, at first has the graphite material body 200 of laminate structure, simultaneously by the graphite substrate preparation, prepare monodispersed miniature silver-colored particle 400 by the hot-melting type argent, according to real needs, the visual particular case of the granularity of this silver particle 400 and being provided with is generally between micron order or Nano grade.
According to silver point is 961.8 ℃, and boiling point is 2213 ℃, and graphite material body 200 is heated to (961.8 ℃, 2213 ℃) temperature range, for example, the temperature of graphite material body 200 can be 1000 ℃, 1500 ℃, 2000 ℃ all can, i.e. the temperature range that can fuse of argent.
Shown in Fig. 3 b, when the temperature of graphite material body 200 rises to (961.8 ℃, 2213 ℃) temperature range in the time, the silver-colored particle 400 that is arranged on graphite material body 200 surfaces promptly fuses, the silver that is in molten state promptly can partly be got involved in the graphite material body 200.
To be in the graphite material body cooling of the condition of high temperature, the part of Jie Ruing not, be accompanied by the temperature-fall period curing molding of graphite material body, on graphite material body 200, form the contact that is higher than the graphite material body surface, promptly get hot-melting type metallic object 300, thereby be prepared into composite radiating graphite material with hot-melting type argent.
More than be to description of the present utility model and non-limiting, based on other embodiment of the utility model thought, all among protection domain of the present utility model.
Claims (6)
1. composite radiating graphite material, it comprises the graphite material body, it is characterized in that:
This graphite material body is provided with the hot-melting type metallic object, and wherein, described hot-melting type metallic object is by the hot-melting type metal base the formed metal dots of fusion to take place on the graphite material body under the condition of high temperature.
2. a kind of composite radiating graphite material according to claim 1 is characterized in that: the laminate structure of described graphite material body for being made up of graphite.
3. a kind of composite radiating graphite material according to claim 1 is characterized in that: described hot-melting type metal is at least a in silver, gold, copper, the aluminium.
4. a kind of composite radiating graphite material according to claim 1 is characterized in that: described hot-melting type metallic object is arranged on the outside surface of graphite material body.
5. a kind of composite radiating graphite material according to claim 3 is characterized in that: described hot-melting type metallic object is on the outside surface that the regular distribution shape is arranged on the graphite material body.
6. a kind of composite radiating graphite material according to claim 3 is characterized in that: the surface of described hot-melting type metallic object is surperficial equal with the graphite material body, or is higher than the surface of graphite material body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202824126U CN201785338U (en) | 2010-08-05 | 2010-08-05 | Composite heat-dissipating graphite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202824126U CN201785338U (en) | 2010-08-05 | 2010-08-05 | Composite heat-dissipating graphite material |
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| Publication Number | Publication Date |
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| CN201785338U true CN201785338U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202824126U Expired - Lifetime CN201785338U (en) | 2010-08-05 | 2010-08-05 | Composite heat-dissipating graphite material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344780A (en) * | 2010-08-05 | 2012-02-08 | 常州碳元科技发展有限公司 | Composite heat dissipating graphite material and manufacturing method thereof |
| CN102514277A (en) * | 2011-11-16 | 2012-06-27 | 常州碳元科技发展有限公司 | Heat dissipation material with graphite film and graphene composite structure and implementation method thereof |
| CN105081333A (en) * | 2014-05-20 | 2015-11-25 | 中国科学院宁波材料技术与工程研究所 | Graphite-metal heat conduction composite material and preparation method thereof |
| CN110402064A (en) * | 2019-06-21 | 2019-11-01 | Oppo广东移动通信有限公司 | Cooling fin and preparation method thereof, housing unit and electronic equipment |
-
2010
- 2010-08-05 CN CN2010202824126U patent/CN201785338U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344780A (en) * | 2010-08-05 | 2012-02-08 | 常州碳元科技发展有限公司 | Composite heat dissipating graphite material and manufacturing method thereof |
| CN102514277A (en) * | 2011-11-16 | 2012-06-27 | 常州碳元科技发展有限公司 | Heat dissipation material with graphite film and graphene composite structure and implementation method thereof |
| CN102514277B (en) * | 2011-11-16 | 2015-10-21 | 碳元科技股份有限公司 | There is heat sink material and the implementation method of graphite film and graphene composite structure |
| CN105081333A (en) * | 2014-05-20 | 2015-11-25 | 中国科学院宁波材料技术与工程研究所 | Graphite-metal heat conduction composite material and preparation method thereof |
| CN110402064A (en) * | 2019-06-21 | 2019-11-01 | Oppo广东移动通信有限公司 | Cooling fin and preparation method thereof, housing unit and electronic equipment |
| CN110402064B (en) * | 2019-06-21 | 2021-03-12 | Oppo广东移动通信有限公司 | Heat radiating fin, preparation method thereof, shell assembly and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: XU SHIZHONG Effective date: 20110701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201203 MAILBOX 203-32, NO. 470, CHUNXIAO ROAD, ZHANGJIANG HIGH-TECH. PARK, PUDONG NEW DISTRICT, SHANGHAI TO: 213122 ROOM 306, BUILDING A, NO. 18, HUASHAN ROAD, XINBEI DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110701 Address after: 306 room 213122, building A, 18 Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 201203 Shanghai Chunxiao road Pudong New Area Zhangjiang hi tech Park No. 470 203-32. Patentee before: Xu Shizhong |
|
| DD01 | Delivery of document by public notice |
Addressee: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Xu Shizhong Document name: Notification of Passing Examination on Formalities |
|
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU TANYUAN TECHNOLOGY CO., LTD Free format text: FORMER NAME: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT CO., LTD. Owner name: TANYUAN SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU TANYUAN TECHNOLOGY CO., LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 306 room 213122, building A, 18 Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: TANYUAN TECHNOLOGY Co.,Ltd. Address before: 306 room 213122, building A, 18 Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee before: Jiangsu carbon dollar Polytron Technologies Inc. Address after: 306 room 213122, building A, 18 Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: Jiangsu carbon dollar Polytron Technologies Inc. Address before: 306 room 213122, building A, 18 Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110406 Effective date of abandoning: 20150617 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110406 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |