CN102244153A - Preparation method of graphite heat radiation fin - Google Patents
Preparation method of graphite heat radiation fin Download PDFInfo
- Publication number
- CN102244153A CN102244153A CN2011100981009A CN201110098100A CN102244153A CN 102244153 A CN102244153 A CN 102244153A CN 2011100981009 A CN2011100981009 A CN 2011100981009A CN 201110098100 A CN201110098100 A CN 201110098100A CN 102244153 A CN102244153 A CN 102244153A
- Authority
- CN
- China
- Prior art keywords
- graphite
- powder
- heat radiation
- radiation fin
- radiating sheet
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 45
- 239000010439 graphite Substances 0.000 title claims abstract description 45
- 230000005855 radiation Effects 0.000 title abstract description 10
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- -1 graphite compound Chemical class 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010306 acid treatment Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 abstract description 5
- 239000006087 Silane Coupling Agent Substances 0.000 abstract 1
- 241000276425 Xiphophorus maculatus Species 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 206010067482 No adverse event Diseases 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a preparation method of a graphite heat radiation fin. The preparation method comprises the following steps: 1. mixing fined graphite power with carbon element content of more than 99.999% with strong acid for acid treatment; and then soaking for 150 minutes at the temperature higher than 100 DEG C; 2. rinsing the graphite powder which is subjected to the acid treatment till the pH value is between 6.6 and 6.8; 3. then adding the graphite powder, metal powder, a silane coupling agent, a titanate coupling agent into pure water, mixing fully, carrying out high-temperature expansion on the mixture for 2 hours at 1000 DEG C-1200 DEG C, and then cooling to the room temperature slowly and drying to obtain a graphite compound; 4. extruding the graphite compound into a platy graphite heat radiation fin by using a graphite coiling device; and 5. spraying an aluminum layer on the surface of the graphite heat radiation fin. The preparation method of the graphite heat radiation fin has no harmful defect on the graphite material, and no environment pollution is caused in the production process, the mechanical strength and purity of the prepared graphite heat radiation fin are improved greatly, and the service life of the prepared graphite heat radiation fin is long.
Description
Technical field
The present invention relates to a kind of manufacture method of graphite radiating sheet, relate in particular to a kind of manufacture method of graphite radiating sheet of energy quick heat radiating.
Background technology
Along with developing rapidly of microelectronics integrated technology and high density printed board packaging technology, packaging density improves rapidly, and thousands of times of ground of the volume of LED element dwindle, and LED instrument and equipment develop towards light, thin, short, little direction day by day.Can discharge higher heat when LED is luminous, the working heat environment of LED moves rapidly to the high temperature direction; At this moment, the heat run-up, the increase that produce when LED is reflective under the environment for use temperature, make the LED still can high efficient and reliable ground operate as normal, and heat-sinking capability becomes the critical limitation in LED light decay and useful life thereof the factor that influences timely.Reliability when ensureing that LED is luminous needs to use the material of excellent combination properties such as high reliability, high thermal conductivity, adds radiator structure efficiently.The heat transferred radiator of like this could be rapidly, in time LED being gathered makes LED in time dispel the heat, and ensures that LED's is normally reflective.
Present employed heat sink material substantially all is an aluminium alloy, but the conductive coefficient of aluminium is not very high (237W/mK), and the heat conductivility of Jin Heyin is higher, but price is too high, and the conductive coefficient of copper takes second place (398W/mK), but weight of copper is big, easily oxidation, and price is not low yet.And graphite material has high temperature resistant, in light weight (only being the 1/2-1/5 of conventional metals Heat Conduction Material), the thermal conductivity height, chemical stability is strong, thermal coefficient of expansion is little, replace traditional metal heat-conducting material, the miniaturization, microminiaturization and the high powerization that not only help LED, and effectively alleviate the weight of LED element, increase payload.But graphite hardness and mechanical strength can not show a candle to metal, and this has brought difficulty to following process.
In traditional graphite chemical treatment, what generally adopt is strong oxidizer acid (mixed liquor of the concentrated sulfuric acid and red fuming nitric acid (RFNA)), treatment temperature is a normal temperature to 100 ℃, processing time is at 5 minutes more than the kind, so that make graphite granule be subjected to abundant erosion, and then, remove unnecessary acid through washing, carry out the high temperature expansion process at last.But can be the part graphite granule dissolved falls for this method, and the product impurity that makes is more, can only be used for conventional heat radiation product.
Summary of the invention
Technical problem to be solved by this invention is the defective that overcomes prior art, provide a kind of to graphite material have no adverse effects, the manufacture method of the graphite radiating sheet of non-environmental-pollution, prepared graphite radiating sheet mechanical strength height, long service life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of manufacture method of graphite radiating sheet, and the making step of graphite radiating sheet is:
1. be carbon elements that levigate graphite powder more than 99.999% is put into the strong acid mixing match and carried out acid treatment, in the temperature more than 100 ℃, soaked 150 minutes then;
2. again being washed to pH value 6.6-6.8 through acid-treated graphite powder;
3. then graphite powder and metal dust, silane coupler, titanate coupling agent are joined in the pure water and fully mix, mixture high temperature under 1000 ℃-1200 ℃ condition was expanded 2 hours, carry out drying after slowly cooling to room temperature again, obtain graphite compound;
4. graphite compound is squeezed into the graphite radiating sheet of sheet by the graphite web apparatus;
5. at the surperficial spraying plating upper aluminum layer of graphite radiating sheet.
As the further design to the aforementioned techniques scheme: the mass percent of aforesaid step each composition in the mixture before dry in 3. is: 55%～65% graphite powder, 5%～10% metal dust, 1.5%～2% silane coupler, 1.5%～2% titanate coupling agent, all the other are pure water.
As the further design to the aforementioned techniques scheme: the strong acid of aforesaid step in 1. is more than one in hydrochloric acid, sulfuric acid or the nitric acid; The metal dust of step in 3. is one or more at least two kinds of combinations of substances in copper powder, silver powder, the aluminium powder.
Graphite material has fabulous chemistry and thermal stability, good thermal conductivity, and electromagnetic radiation shielding and nuclear radiation effectively, its radiating effect is superior.
In sum, compare with the common fin of use of the prior art by the graphite radiating sheet that manufacture method of the present invention is made, overcome that the impurity that exists in the traditional preparation process technology is many, environmental pollution is big, mechanical property is low, useful life is short, defective such as easily come off.Graphite radiating sheet through above-mentioned processing method obtains has no adverse effects to graphite material, non-environmental-pollution in the production process, and its mechanical strength and purity improve greatly, long service life; Heat radiation to electronic components such as LED has very superior radiating effect.
Embodiment
Embodiment 1
The manufacture method of the embodiment of the invention 1 described a kind of graphite radiating sheet, the making step of graphite radiating sheet is:
1. be carbon elements that levigate graphite powder more than 99.999% is put into the strong acid mixing match and carried out acid treatment, in the temperature more than 100 ℃, soaked 150 minutes then;
2. again being washed to pH value 6.6-6.8 through acid-treated graphite powder;
3. then graphite powder and metal dust, silane coupler, titanate coupling agent are joined in the pure water and fully mix, mixture high temperature under 1000 ℃-1200 ℃ condition was expanded 2 hours, carry out drying after slowly cooling to room temperature again, obtain graphite compound;
4. graphite compound is squeezed into the graphite radiating sheet of sheet by the graphite web apparatus;
5. at the surperficial spraying plating upper aluminum layer of graphite radiating sheet.
The mass percent of aforesaid step each composition in the mixture before dry in 3. is: 55%～65% graphite powder, and 5%～10% metal dust, 1.5%～2% silane coupler, 1.5%～2% titanate coupling agent, all the other are pure water.
The strong acid of aforesaid step in 1. is more than one in hydrochloric acid, sulfuric acid or the nitric acid; The metal dust of step in 3. is one or more at least two kinds of combinations of substances in copper powder, silver powder, the aluminium powder.
The above only is preferred embodiment of the present invention, is not technology contents of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. the manufacture method of a graphite radiating sheet, it is characterized in that: the making step of described graphite radiating sheet is:
1. be carbon elements that levigate graphite powder more than 99.999% is put into the strong acid mixing match and carried out acid treatment, in the temperature more than 100 ℃, soaked 150 minutes then;
2. again being washed to pH value 6.6-6.8 through acid-treated graphite powder;
3. then graphite powder and metal dust, silane coupler, titanate coupling agent are joined in the pure water and fully mix, mixture high temperature under 1000 ℃-1200 ℃ condition was expanded 2 hours, carry out drying after slowly cooling to room temperature again, obtain graphite compound;
4. graphite compound is squeezed into the graphite radiating sheet of sheet by the graphite web apparatus;
5. at the surperficial spraying plating upper aluminum layer of graphite radiating sheet.
2. according to the manufacture method of the described graphite radiating sheet of claim 5, it is characterized in that: the mass percent of described step each composition in the mixture before dry in 3. is: 55%～65% graphite powder, 5%～10% metal dust, 1.5%～2% silane coupler, 1.5%～2% titanate coupling agent, all the other are pure water.
3. according to the manufacture method of the described graphite radiating sheet of claim 2, it is characterized in that: the strong acid of described step in 1. is more than one in hydrochloric acid, sulfuric acid or the nitric acid; The metal dust of step in 3. is one or more at least two kinds of combinations of substances in copper powder, silver powder, the aluminium powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098100 CN102244153B (en) | 2011-04-19 | 2011-04-19 | Preparation method of graphite heat radiation fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098100 CN102244153B (en) | 2011-04-19 | 2011-04-19 | Preparation method of graphite heat radiation fin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102244153A true CN102244153A (en) | 2011-11-16 |
| CN102244153B CN102244153B (en) | 2013-05-01 |
Family
ID=44962101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110098100 Expired - Fee Related CN102244153B (en) | 2011-04-19 | 2011-04-19 | Preparation method of graphite heat radiation fin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102244153B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975417A (en) * | 2012-06-13 | 2013-03-20 | 天诺光电材料股份有限公司 | Thermal-conducting fiber reinforced high-thermal-conductivity graphite radiating fin and preparation method thereof |
| CN103298321A (en) * | 2013-06-24 | 2013-09-11 | 江西量一光电科技有限公司 | Tungsten-copper alloy and graphite composite cooling fin and production method thereof |
| JP2014533871A (en) * | 2011-11-17 | 2014-12-15 | イオン ビーム アプリケーションズＩｏｎ Ｂｅａｍ Ａｐｐｌｉｃａｔｉｏｎｓ | RF system for synchrocyclotron |
| CN107835614A (en) * | 2017-10-23 | 2018-03-23 | 江苏都盛科技发展有限公司 | A kind of novel alloy heater |
| CN108551719A (en) * | 2018-04-27 | 2018-09-18 | 厦门奈福电子有限公司 | Have both new material, preparation process and its application of EMI shielding and heat sinking function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103917A (en) * | 1985-05-03 | 1986-10-29 | 山东省北墅生建石墨矿 | Expansible black lead and manufacture method thereof |
| US20020008031A1 (en) * | 2000-05-24 | 2002-01-24 | Barsukov Igor V. | Method of preparing graphite intercalation compounds and resultant products |
| CN1431726A (en) * | 2003-01-10 | 2003-07-23 | 青岛建筑工程学院 | Method for preparing expansible graphite ting powder |
| JP2008002800A (en) * | 2002-06-18 | 2008-01-10 | Toyo Tanso Kk | Inner sheet for carbon crucible using flexible expanded graphite sheet of high purity, and manufacturing method therefor |
| CN101951751A (en) * | 2010-07-29 | 2011-01-19 | 山东天诺光电材料有限公司 | Method for preparing high-thermal conductivity graphite radiating fins |
-
2011
- 2011-04-19 CN CN 201110098100 patent/CN102244153B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103917A (en) * | 1985-05-03 | 1986-10-29 | 山东省北墅生建石墨矿 | Expansible black lead and manufacture method thereof |
| US20020008031A1 (en) * | 2000-05-24 | 2002-01-24 | Barsukov Igor V. | Method of preparing graphite intercalation compounds and resultant products |
| JP2008002800A (en) * | 2002-06-18 | 2008-01-10 | Toyo Tanso Kk | Inner sheet for carbon crucible using flexible expanded graphite sheet of high purity, and manufacturing method therefor |
| CN1431726A (en) * | 2003-01-10 | 2003-07-23 | 青岛建筑工程学院 | Method for preparing expansible graphite ting powder |
| CN101951751A (en) * | 2010-07-29 | 2011-01-19 | 山东天诺光电材料有限公司 | Method for preparing high-thermal conductivity graphite radiating fins |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014533871A (en) * | 2011-11-17 | 2014-12-15 | イオン ビーム アプリケーションズＩｏｎ Ｂｅａｍ Ａｐｐｌｉｃａｔｉｏｎｓ | RF system for synchrocyclotron |
| CN102975417A (en) * | 2012-06-13 | 2013-03-20 | 天诺光电材料股份有限公司 | Thermal-conducting fiber reinforced high-thermal-conductivity graphite radiating fin and preparation method thereof |
| CN103298321A (en) * | 2013-06-24 | 2013-09-11 | 江西量一光电科技有限公司 | Tungsten-copper alloy and graphite composite cooling fin and production method thereof |
| CN107835614A (en) * | 2017-10-23 | 2018-03-23 | 江苏都盛科技发展有限公司 | A kind of novel alloy heater |
| CN108551719A (en) * | 2018-04-27 | 2018-09-18 | 厦门奈福电子有限公司 | Have both new material, preparation process and its application of EMI shielding and heat sinking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102244153B (en) | 2013-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102244153B (en) | Preparation method of graphite heat radiation fin | |
| CN102975417B (en) | The high thermal conductivity graphite radiating fins that a kind of heat conducting fiber strengthens and preparation method | |
| CN103131396B (en) | A kind of heat interfacial material and manufacture method thereof | |
| CN105689914B (en) | A kind of tin cream and preparation method thereof | |
| CN103131274A (en) | Fluororesin radiating paint and preparation method thereof | |
| CN102935518B (en) | Nano silver paste for chip mounting and method for preparing nano silver paste | |
| CN101951751A (en) | Method for preparing high-thermal conductivity graphite radiating fins | |
| CN102504741A (en) | High-heat conductivity and electric conductivity die bonding adhesive for carbon nano tube-filled high-power light-emitting diode (LED) | |
| CN108456802A (en) | A kind of tin bismuth composite alloy and preparation method thereof | |
| CN102692000A (en) | Graphite base plate for LED (light emitting diode) high-power illumination module and manufacturing technology of graphite base plate | |
| CN105199212A (en) | Preparation method of graphene/PVA composite material | |
| CN113043680A (en) | High-heat-dissipation aluminum-based copper-clad plate | |
| CN111519059A (en) | Method for preparing high-performance aluminum-based silicon carbide | |
| CN103117109B (en) | A kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder | |
| CN109108524B (en) | Diamond-nano silver soldering paste heat conduction material and preparation method thereof | |
| CN103360804B (en) | A kind of graphite radiating coating and preparation method thereof | |
| CN113977133A (en) | Corrosion-resistant composite brazing filler metal for copper-aluminum transition wire clamp and preparation method thereof | |
| CN102135250A (en) | LED lamp source dissipating heat efficiently and manufacturing method thereof | |
| CN104144597B (en) | Heat-conduction-fiber-enhanced high heat conductivity graphite cooling fin and manufacturing method | |
| CN103117103B (en) | A kind of solar cell conductive paste containing tetraethyl orthosilicate | |
| CN102213404A (en) | High-efficiency heat-radiation LED heat radiator and manufacture method thereof | |
| CN101826580A (en) | Production process and application of novel LED substrate | |
| CN106086835A (en) | A kind of aluminum and the preparation method of superhydrophobic surface of aluminum alloy | |
| CN105037991B (en) | A kind of bismuthic acid barium nanometer rods electronic package material | |
| CN103117108B (en) | A kind of electrocondution slurry that contains ATEC |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG HUAHUIHUANG PHOTOELECTRIC TECHNOLOGY CO. Free format text: FORMER OWNER: LIANG SHENGGUANG Effective date: 20141020 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141020 Address after: 529000 Jiangmen Province, Jianghai District, high tech Road, No. 4, building 46, No. Patentee after: GUANGDONG HUAHUIHUANG OPTOELECTRONICS TECHNOLOGY CO.,LTD. Address before: 529000, Guangdong, Jiangmen Kaiping three port Street office, Changsha Port Road, No. 85 Patentee before: Liang Shengguang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |