CN104291311B - The preparation technology of electronic equipment graphite heat-conducting fin - Google Patents
The preparation technology of electronic equipment graphite heat-conducting fin Download PDFInfo
- Publication number
- CN104291311B CN104291311B CN201410487442.3A CN201410487442A CN104291311B CN 104291311 B CN104291311 B CN 104291311B CN 201410487442 A CN201410487442 A CN 201410487442A CN 104291311 B CN104291311 B CN 104291311B
- Authority
- CN
- China
- Prior art keywords
- hour
- keep
- obtaining
- constant temperature
- heat
- 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.)
- Active
Links
Landscapes
- Carbon And Carbon Compounds (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The preparation technology of a kind of electronic equipment graphite heat-conducting fin of disclosure, comprises the following steps: by adding ethylene glycol in polyamic acid solution, be coated on a glass substrate layer after being sufficiently stirred for; It is positioned in the baking oven of vacuum environment, 100 DEG C of constant temperature 0.9 ~ 1.1 hour, then it is warmed up to 300 DEG C, constant temperature is natural cooling after 0.9 hour, thus obtaining Kapton; By Kapton under inert gas shielding, from room temperature to 250 DEG C, keep 0.9 ~ 1.1 hour, then heat to 500 DEG C, keep 1 hour; Then rise to 800 DEG C, keep 0.9 ~ 1.1 hour; Being warming up to 1200 DEG C again, cooling down after preserving 0.9 ~ 1.1 hour, thus obtaining the carbonized film of pre-burned; Adopt the carbonized film of the pre-burned of the calender described step 4 of calendering. The present invention all improves heat conductivility in the vertical direction with horizontal direction, it is to avoid hot-spot, and heat-transfer rate is fast, forms the graphite linings of biaxial tension, high-modulus.
Description
Technical field
The present invention relates to the preparation technology of a kind of electronic equipment graphite heat-conducting fin, belong to adhesive tape technical field.
Background technology
The acceleration of the upgrading of electronic product, highly integrated and high performance electronics increasing, work package volume size is more and more less, and speed and the efficiency of work are more and more higher, and caloric value is increasing. At present, known metal class radiating subassembly has been subjected to the restriction of its material and the self-radiating limit, it is necessary to adopt the heat sink material of advanced heat radiation technique and excellent performance to be defined as away heat, it is ensured that effective work of its electronic product.
And graphite radiating material, because of distinctive low-density and high coefficient of heat transfer and low thermal resistance, become hyundai electronics series products and solve the preferred material of heat dissipation technology. Its heat conductivity is generally below 600, and graphite single facet to heat conductivity up to 2200, it can be seen that the heat conductivility of graphite heat radiation fin has the very big rising space in theory. Additionally, due to graphite easily forms layered crystal structure, and interlayer is absent from orderly structure, so having significant anisotropy, namely axial thermal conductivity coefficient often only towards 1/tens, this characteristic limits the range of application of graphite heat radiation fin.
Summary of the invention
It is an object of the present invention to provide the preparation technology of a kind of electronic equipment graphite heat-conducting fin, the graphite heat-conducting fin that this preparation technology obtains all improves heat conductivility in the vertical direction with horizontal direction, avoid adhesive tape hot-spot, adhesive tape hot-spot is also avoided in the diffusion not only improving heat, improve performance and the life-span of product, and product versatility and convenience.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of adhesive tape graphite heat radiation fin, comprises the following steps:
Step one, by polyamic acid solution add ethylene glycol, be coated on a glass substrate layer after being sufficiently stirred for;
Step 2, under nitrogen protection, 80 DEG C of constant temperature 0.9 ~ 1.1 hour;
Step 3, it is positioned in the baking oven of vacuum environment, 100 DEG C of constant temperature 0.9 ~ 1.1 hour, then it is warmed up to 300 DEG C, constant temperature is natural cooling after 0.9 hour, thus obtaining Kapton;
Step 4, by Kapton under inert gas shielding, from room temperature to 250 DEG C, keep 0.9 ~ 1.1 hour, then heat to 500 DEG C, keep 1 hour; Then rise to 800 DEG C, keep 0.9 ~ 1.1 hour; Being warming up to 1200 DEG C again, cooling down after preserving 0.9 ~ 1.1 hour, thus obtaining the carbonized film of pre-burned;
Step 5, employing calender roll the carbonized film of the pre-burned of described step 4;
Step 6, rise to 2400 DEG C with the speed of 19 ~ 21 degree/min, keep 0.9 ~ 1.1 hour, then be warming up to 2900 DEG C, cool down after keeping 1.8 ~ 2.2 hours, thus obtaining the main graphite film fired;
Step 7, the graphite film that then master of step 6 gained fires carry out rolling thus obtaining described graphite heat radiation fin.
In technique scheme, further improved plan is as follows:
1, in such scheme, described step 2, under nitrogen protection, 80 DEG C of constant temperature 1 hour;
Described step 3, it is positioned in the baking oven of vacuum environment, 100 DEG C of constant temperature 1 hour, then it is warmed up to 300 DEG C, constant temperature is natural cooling after 1 hour, thus obtaining Kapton.
2, in such scheme, described step 4, by Kapton under argon shield, rise to 250 DEG C with 5 degree/min speed from room temperature, keep 1 hour, then with 3 degree/min, rise to 500 DEG C, keep 1 hour, then rise to 800 DEG C with the speed of 5 degree/min, keep 1 hour, rising to 1200 DEG C with the speed of 10 degree/min again, cooling down after preserving 1 hour, thus obtaining the carbonized film of pre-burned;
Described step 6, rise to 2400 DEG C with the speed of 20 degree/min, keep 1 hour, then rise to 2900 DEG C with the speed of 20 degree/min, cool down after keeping 2 hours, thus obtaining the main graphite film fired.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and effect:
1. the preparation technology of electronic equipment graphite heat-conducting fin of the present invention, the graphite heat-conducting fin of its acquisition both vertically and horizontally all improves heat conductivility, avoid adhesive tape hot-spot, achieve the uniformity of heat conductivility, hot-spot is also avoided in the diffusion not only improving heat, improve performance and the life-span of product, and product versatility and convenience.
2. the preparation technology of electronic equipment graphite heat-conducting fin of the present invention, it forms the graphite linings of biaxial tension, high-modulus based on specific components of the present invention and technique, it is possible to decrease Kapton volume contraction in sintering process.
Accompanying drawing explanation
Accompanying drawing 1 is the thermal weight loss schematic diagram of Kapton of the present invention;
Accompanying drawing 2 is the thermal change schematic diagram of Kapton of the present invention;
Accompanying drawing 3 is graphite heat-conducting fin XRD diffracting spectrum of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment: the preparation technology of a kind of electronic equipment graphite heat-conducting fin, comprises the following steps:
Step one, by polyamic acid solution add ethylene glycol, be coated on after being sufficiently stirred on glass substrate layer;
Step 2, under nitrogen protection, 80 DEG C of constant temperature 0.95 hour;
Step 3, it is positioned in the baking oven of vacuum environment, 100 DEG C of constant temperature 1.05 hours, then it is warmed up to 300 DEG C, constant temperature is natural cooling after 0.9 hour, thus obtaining Kapton;
Step 4, by Kapton under inert gas shielding, rise to 250 DEG C with 4.5 degree/min speed from room temperature, keep 0.92 hour, then with 2.5 degree/min, rise to 500 DEG C, keep 1 hour; Then rise to 800 DEG C with the speed of 5 degree/min, keep 1 hour; Rising to 1200 DEG C with the speed of 9.5 degree/min again, cooling down after preserving 1.05 hours, thus obtaining the carbonized film of pre-burned;
Step 5, employing calender roll the carbonized film of the pre-burned of described step 4;
Step 6, rise to 2400 DEG C with the speed of 19.5 degree/min, keep 1.05 hours, then rise to 2900 DEG C with the speed of 21 degree/min, cool down after keeping 2.1 hours, thus obtaining the main graphite film fired;
Step 7, the graphite film that then master of step 6 gained fires carry out rolling thus obtaining described graphite heat radiation fin.
From figure accompanying drawing 3, it can be seen that the diffraction maximum of graphite-structure, it was demonstrated that the formation of graphite-structure.
The vertical thermal conductivity of embodiment is 200w/mk, and horizontal heat conductivity is 1600w/mk, resist bending experiment > 10000(R5/180 °).
When adopting the preparation technology of above-mentioned electronic equipment graphite heat-conducting fin, the graphite heat-conducting fin of its acquisition all improves heat conductivility in the vertical direction with horizontal direction, avoid adhesive tape hot-spot, achieve the uniformity of heat conductivility, hot-spot is also avoided in the diffusion not only improving heat, improve performance and the life-span of product, and product versatility and convenience; Secondly, it forms the graphite linings of biaxial tension, high-modulus based on specific components of the present invention and technique, it is possible to decrease Kapton volume contraction in sintering process.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this. All equivalences made according to spirit of the invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. the preparation technology of an electronic equipment graphite heat-conducting fin, it is characterised in that: comprise the following steps:
Step one, by polyamic acid solution add ethylene glycol, be coated on a glass substrate layer after being sufficiently stirred for;
Step 2, under nitrogen protection, 80 DEG C of constant temperature 0.9 ~ 1.1 hour;
Step 3, it is positioned in the baking oven of vacuum environment, 100 DEG C of constant temperature 0.9 ~ 1.1 hour, then it is warmed up to 300 DEG C, constant temperature is natural cooling after 0.9 hour, thus obtaining Kapton;
Step 4, by Kapton under inert gas shielding, from room temperature to 250 DEG C, keep 0.9 ~ 1.1 hour, then heat to 500 DEG C, keep 1 hour; Then rise to 800 DEG C, keep 0.9 ~ 1.1 hour; Being warming up to 1200 DEG C again, cooling down after preserving 0.9 ~ 1.1 hour, thus obtaining the carbonized film of pre-burned;
Step 5, employing calender roll the carbonized film of the pre-burned of described step 4;
Step 6, rise to 2400 DEG C with the speed of 19 ~ 21 degree/min, keep 0.9 ~ 1.1 hour, then be warming up to 2900 DEG C, cool down after keeping 1.8 ~ 2.2 hours, thus obtaining the main graphite film fired;
Step 7, the graphite film that then master of step 6 gained fires carry out rolling thus obtaining described graphite heat radiation fin.
2. the preparation technology of graphite heat-conducting fin according to claim 1, it is characterised in that: described step 2, under nitrogen protection, 80 DEG C of constant temperature 1 hour.
3. the preparation technology of graphite heat-conducting fin according to claim 1, it is characterized in that: described step 6, rise to 2400 DEG C with the speed of 19 ~ 21 degree/min, keep 0.9 ~ 1.1 hour, 2900 DEG C are risen to again with the speed of 19 ~ 21 degree/min, cool down after keeping 1.8 ~ 2.2 hours, thus obtaining the main graphite film fired.
4. the preparation technology of graphite heat-conducting fin according to claim 1, it is characterized in that: described step 3, be positioned in the baking oven of vacuum environment that then 100 DEG C of constant temperature 1 hour be warmed up to 300 DEG C, constant temperature is natural cooling after 1 hour, thus obtaining Kapton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487442.3A CN104291311B (en) | 2012-12-28 | 2012-12-28 | The preparation technology of electronic equipment graphite heat-conducting fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487442.3A CN104291311B (en) | 2012-12-28 | 2012-12-28 | The preparation technology of electronic equipment graphite heat-conducting fin |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210580824.1A Division CN103043657B (en) | 2012-12-28 | 2012-12-28 | Graphite radiation fin for adhesive tapes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104291311A CN104291311A (en) | 2015-01-21 |
| CN104291311B true CN104291311B (en) | 2016-06-15 |
Family
ID=52311305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410487442.3A Active CN104291311B (en) | 2012-12-28 | 2012-12-28 | The preparation technology of electronic equipment graphite heat-conducting fin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104291311B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629698B (en) * | 2016-09-15 | 2018-12-18 | 广东思泉新材料股份有限公司 | A kind of production method of ultra-thin graphite slice |
| CN106455442B (en) * | 2016-11-02 | 2019-03-15 | 上海博息电子科技有限公司 | A kind of ultra-thin graphene height leads composite material |
| CN109911893B (en) * | 2018-12-04 | 2022-02-01 | 重庆云天化瀚恩新材料开发有限公司 | Preparation method of heat-conducting artificial graphite gasket |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112086A (en) * | 1993-06-09 | 1995-11-22 | 中国科学院山西煤炭化学研究所 | High crystallinity graphite film material and its preparing method |
| JP2002115064A (en) * | 2000-10-10 | 2002-04-19 | Ulvac Japan Ltd | Method for cleaning cvd system for graphite nanofiber thin film deposition |
| CN102745674A (en) * | 2012-06-25 | 2012-10-24 | 孙伟峰 | Manufacturing mold and manufacturing method of flake graphite film |
| CN102803137A (en) * | 2009-06-22 | 2012-11-28 | 株式会社钟化 | Graphite film and process for producing graphite film |
-
2012
- 2012-12-28 CN CN201410487442.3A patent/CN104291311B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112086A (en) * | 1993-06-09 | 1995-11-22 | 中国科学院山西煤炭化学研究所 | High crystallinity graphite film material and its preparing method |
| JP2002115064A (en) * | 2000-10-10 | 2002-04-19 | Ulvac Japan Ltd | Method for cleaning cvd system for graphite nanofiber thin film deposition |
| CN102803137A (en) * | 2009-06-22 | 2012-11-28 | 株式会社钟化 | Graphite film and process for producing graphite film |
| CN102745674A (en) * | 2012-06-25 | 2012-10-24 | 孙伟峰 | Manufacturing mold and manufacturing method of flake graphite film |
Non-Patent Citations (1)
| Title |
|---|
| 亓淑英.以聚酰亚胺薄膜为原料制备碳膜的结构与性能的研究.《中国优秀硕士论文数据库》.2006, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104291311A (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103043657B (en) | Graphite radiation fin for adhesive tapes | |
| CN103045119B (en) | Heat-dissipating double-sided adhesive tape with ultrahigh heat conductivity coefficient | |
| CN103059761B (en) | High-heat conductivity coefficient graphite heat-radiation adhesive tape | |
| CN102675824B (en) | Insulating heat-conducting composition and electronic device | |
| CN104291311B (en) | The preparation technology of electronic equipment graphite heat-conducting fin | |
| CN103011141A (en) | Method for manufacturing high thermal conductivity graphite film | |
| TW201009551A (en) | Improved heat dissipation for low profile devices | |
| CN106535560A (en) | Manufacturing process for heat-conducting graphite paste films for flat computers | |
| KR20120123645A (en) | Heat conduction tape to horizontality and preparation method thereof | |
| CN104495795A (en) | Graphite flake and preparation method thereof | |
| KR101859005B1 (en) | Multi-layered heat radiation film | |
| CN104310379A (en) | High modulus graphite radiating fin | |
| CN103906418A (en) | Cooling fin and manufacturing method thereof | |
| CN103213973B (en) | Method for preparing flexible highly oriented graphite heat conduction material | |
| CN104176733A (en) | Manufacturing method of high-thermal-conductivity graphite film | |
| CN103509987B (en) | A kind of low-melting point metal alloy Heat Conduction Material and preparation method thereof | |
| CN105838919A (en) | Low-melting-point metal alloy heat conduction material and preparing method thereof | |
| CN104302155B (en) | Graphite heat radiation fin for adhesive tape | |
| CN204801156U (en) | Thermal film of low heat conduction of high even heat | |
| CN105908016A (en) | Low-melting-point metal alloy heat conduction material and preparation method thereof | |
| KR101531630B1 (en) | Thin-heat film and heat-radiation sheet comparing the same | |
| CN203884121U (en) | Radiating fin | |
| CN104812205B (en) | Stretch-proof radiating graphite paster | |
| CN103796493B (en) | Heat conduction graphite patch for adhesive tape and preparation method thereof | |
| CN106455442B (en) | A kind of ultra-thin graphene height leads composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 223900 Sihong Province Economic Development Zone, Suqian, West Ocean West Road, No. 6 Patentee after: Jiangsu Stick new materials Polytron Technologies Inc Address before: 215400 Luoyang, Jiangsu, Taicang Banqiao Town, East Road, No. 221, No. Patentee before: Suzhou Sidike New Material Science & Technology Co., Ltd. |