CN106219529A - The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke - Google Patents
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke Download PDFInfo
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- CN106219529A CN106219529A CN201610603101.7A CN201610603101A CN106219529A CN 106219529 A CN106219529 A CN 106219529A CN 201610603101 A CN201610603101 A CN 201610603101A CN 106219529 A CN106219529 A CN 106219529A
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- graphite sheet
- conductive graphite
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- temperature
- metallurgical coke
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Abstract
The invention discloses the technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke, including 1) get the raw materials ready；2) precomminution；3) pre-screening；4) except ferrum；5) high-temperature calcination；6) cooling；7) separating twice；8) screening；9) mixing；10) die mould and heating；11) high temperature graphitization；12) gum；13) compacting thermal trough；14) cutting；This processing technique step is scientific and reasonable, the processing technique of prior art is improved, the process that raw material is become more meticulous, make its granularity more uniformity, improve the qualification rate of finished product, and then improve electric conductivity and the heat conductivity of conductive graphite sheet, and its chemical stability can also be improved by this technique, reduce its thermal expansivity, and easily machine-shaping.
Description
Technical field
The present invention relates to the conductive graphite sheet of a kind of electronics field, particularly relate to a kind of based on metallurgical coke preparation height
The technique of conductive radiator conductive graphite sheet.
Background technology
Conductive graphite sheet is a kind of brand-new heat conduction and heat radiation material, along two square uniform heat conduction, shielding thermal source and assembly
Simultaneously improving the performance of consumption electronic product, color is usually black, and material is that native graphite is through exquisiteness processing, heat conductivity
In the horizontal direction be up to 1500W/M-K, use IC, CPU, MOS, LED, fin, LCD-TV, notebook computer, communication apparatus,
Wireless exchange board, DVD, handheld device etc..
Conductive graphite sheet is because of nonmetallic materials, but has heat conductivity the highest as metal and electric conductivity,
Its heat-conductivity conducting is the most relatively better than aluminium foil or Copper Foil, but the conduction that conductive graphite sheet is produced in existing production technology
Property and heat conductivity more reach optimal, essentially consist in raw material processing stage and calcination stage, to heat conduction stone in prior art
The process of ink sheet raw material becomes more meticulous not, causes in its raw material containing more impurity component so that the heat conduction stone that final production goes out
The quality of ink sheet is not high enough, and qualification rate reduces, and can affect it preferably to shop property and heat conductivity.
Summary of the invention
For the problem of above-mentioned existence, it is desirable to provide prepare high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke
Technique, this processing technique step is scientific and reasonable, improves the processing technique of prior art, becomes more meticulous raw material
Process so that it is granularity more uniformity, improve the qualification rate of finished product, so improve conductive graphite sheet electric conductivity and
Heat conductivity, and its chemical stability can also be improved by this technique, reduce its thermal expansivity, and easily machine-shaping.
To achieve these goals, the technical solution adopted in the present invention is as follows:
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke, comprises the following steps:
1) get the raw materials ready: choose the metallurgical coke raw material as conductive graphite sheet；
2) precomminution: above-mentioned metallurgical coke is crushed in advance through disintegrating apparatus the medium size of 60-80mm；
4) except ferrum: size-reduced metallurgical coke is carried out in being placed in trash separator except ferrum operates；
5) high-temperature calcination: calcine the metallurgical coke particles through remove impurity in calciner, calcining is divided into four-stage, respectively
For the precalcining stage: this stage is that precalcining phase temperature increases to 200 by increase per minute for the temperature in calciner 40 DEG C
DEG C, this stage calcination time 10 min；Intermediate calcination stage: this stage is by increase by 25 per minute for the temperature in calciner
DEG C, intermediate calcination stage temperature increases to 900 DEG C, this stage calcination time 30 min, and is incubated after temperature is raised to 900 DEG C
10-15min；Rear calcination stage: this stage is by increase per minute for the temperature in calciner 20 DEG C, and rear calcination stage temperature increases
Add to 1200-1300 DEG C, this stage calcination time 15-20 min；Insulation calcination stage: the temperature in this stage is always held at
1200-1300 DEG C, insulation calcining 30min at such a temperature；
6) cooling: the metallurgical coke particles calcined cools down in revolution cooler, uses multiple nozzle to metallurgical coke
Grain water spray chilling, the discharging when detecting temperature and reaching 120-150 DEG C, form coke；
7) separating twice: the cooled smelter coke completed is ground into, through disintegrating apparatus, little that grain diameter is 0.3-0.5mm
Grain；
8) screening: carry out three level screen through the little granule of smelter coke of separating twice respectively through screening plant, filter out size
Consistent granule is out；
9) mixing: little for smelter coke granule and binding agent are carried out kneading, forms compound；
10) die mould and heating: in a mold by compressing for above-mentioned compound, being pressed into square sheet shape, its thickness is at 0.01-
Between 0.02mm, form conductive graphite sheet base substrate, arrange in mould and add hot channel, by adding hot channel, compressing is led
Hot graphite flake base substrate tentatively heats, heating and temperature control between 200-300 DEG C, heat time heating time 30min；
11) high temperature graphitization: carry out high fire stons in the conductive graphite sheet base substrate of above-mentioned heating is fed directly to high temperature graphitization stove
Inkization operates；
12) gum: the conductive graphite sheet after high temperature graphitization is cooled to when 50-60 DEG C heat-resisting two-sided its bottom surface coating one layer
Glue, and one layer of release paper is adhered in conductive graphite sheet bottom surface；
13) compacting thermal trough: the conductive graphite sheet after gum is placed in mould, and surface suppresses width and the degree of depth is equal thereon
Thermal trough for 1mm；
14) cutting: the conductive graphite sheet base substrate after graphitization forms the conductive graphite sheet of finished product, and cooling down, Jin Ertong
Cross cutting equipment and cut into the size of needs.
As preferably, the trash separator in described step (3) includes trash extraction box, charging aperture, discharging opening and crutcher,
At the charging aperture of described trash extraction box, vertically arranged at least one piece is removed iron plate, and is additionally provided with net at the charging aperture of described trash extraction box
Sieve uniform distributor.
As preferably, arranging rotary open type lid at described charging aperture, described rotary open type lid one end is certainly
By holding, the other end is hingedly connected on the casing of described trash extraction box by jointed shaft.
As preferably, described step (7) three level screen, be by little for smelter coke granule respectively through 400 mesh, 200 mesh and
100 mesh mesh screens carry out three level screen.
As preferably, in described step (8), the little granule of smelter coke and binding agent carry out kneading with the ratio of 5:1, wherein
Binding agent is coal tar pitch.
The invention has the beneficial effects as follows: compared with prior art, the present invention thes improvement is that,
One, sets up except ferrum operates, and because containing the impurity such as irony in the raw material of pulverizing, therefore needs by trash separator its inside
Impurity is purged, and so can improve the purity of raw material, so improve the quality of processing, electric conductivity and heat conductivity as well as
Improve, also remove during the irony impurity in raw material is prevented from following process oxidized；
Its two, calcination stage is divided into four-stage, by the control of four-stage different temperatures, it is possible to preferably improve metallurgy
The quality of burnt calcining and efficiency, and the most different in the state of each stage metallurgical coke, use the rational calcination operation can
Improve the crystal forming effect after metallurgical coke shapes, and moisture in metallurgical coke and volatile material can more preferably, more fill
That divides vapors away；
Its three, increase the screening stage, the final uniformity improving raw material is had a very big impact by setting up of screening stage, this
Bright mentality of designing is to be sieved by three grades of screen clothes, thus can be further ensured that the uniformity of raw material degree, improves yield rate；
Its four, the present invention also set up die mould and heating before high temperature graphitization, heated immediately after die mould completes, be into
A transition before row high temperature graphitization, so can improve the efficiency of high temperature graphitization, enters high temperature after reducing again die mould
Gap in graphitizing furnace.
Its five, use the gum processing method under keeping warm mode, improve the activity of glue molecule, gum can not only be improved
Effect, and gum efficiency can also be improved, and then improve the adhesiving effect of conductive graphite sheet and circuit board etc..
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conductive graphite sheet of the present invention.
Wherein: 1-conductive graphite sheet, 2-thermal trough.
Detailed description of the invention
In order to make those of ordinary skill in the art be better understood on technical scheme, below in conjunction with the accompanying drawings and
Technical scheme is further described by embodiment.
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke, comprises the following steps:
1) get the raw materials ready: choose the metallurgical coke raw material as conductive graphite sheet；
2) precomminution: above-mentioned metallurgical coke is crushed in advance the medium size of 60-80mm through disintegrating apparatus, because of carbon raw material granule
Spend big, in calcination process, not only do not ensure the uniform quality after calcining, and affected by calciner, to charging
Difficulty is caused, it is ensured that the follow-up degree of depth that is capable of is calcined with discharge；
4) except ferrum: size-reduced metallurgical coke is carried out in being placed in trash separator except ferrum operates；
Trash separator includes trash extraction box, charging aperture, discharging opening and crutcher, vertically sets at the charging aperture of described trash extraction box
Put at least one piece and remove iron plate, and at the charging aperture of described trash extraction box, be additionally provided with mesh screen uniform distributor, at described charging aperture
Arranging rotary open type lid, described rotary open type lid one end is free end, and the other end is hingedly connected to by jointed shaft
On the casing of described trash extraction box, the mesh of mesh screen uniform distributor is 60 or 80 mesh, so by by former for the graininess of precomminution
Material enters mesh screen uniform distributor and is spread out uniform blanking, and the granule of blanking will spread out, it is simple to is inhaled by impurity and is removing
On iron plate；
Except iron plate is vertically set up in parallel multiple in trash extraction box, each two is removed and is set to blanking channel between iron plate, precomminution
Granule is from throat-fed, by being inhaled by irony impurity except on iron plate except iron plate during blanking, is rotation because of lid again
Turn open-type lid, therefore when reaching certain thickness except ferrum, open lid, periodically clear up except iron plate, in order to avoid impact
Dust removal rate and effect, it is simple, convenient that lid is arranged to rotary open type lid, it is possible to quickly realizes installing except the cleaning of iron plate
Operation.
5) high-temperature calcination: calcine the metallurgical coke particles through remove impurity in calciner, calciner uses revolution
Kiln is calcined, and calcining is divided into four-stage, the respectively precalcining stage: this stage is by per minute for the temperature in calciner
Increasing by 40 DEG C, precalcining phase temperature increases to 200 DEG C, this stage calcination time 10 min, this stage mainly go moisture removal or
Person's volatile material is to improve electric conductivity, to improve true density etc.；Intermediate calcination stage: this stage is by the temperature in calciner
Increase per minute 25 DEG C, intermediate calcination stage temperature increases to 900 DEG C, this stage calcination time 30 min, and is raised in temperature
Being incubated 10-15min after 900 DEG C, calcining heat gives certain temperature retention time tap density to calcined coke and electricity when 900 DEG C
The improvement of resistance rate index is highly beneficial；Rear calcination stage: this stage is by increase per minute for the temperature in calciner 20 DEG C, after
Calcination stage temperature increases to 1200-1300 DEG C, this stage calcination time 15-20 min, suitably reduces intensification speed in high temperature section
Rate is to improving calcined coke true density and antioxidant activity index is highly beneficial；Insulation calcination stage: the temperature in this stage is always
It is maintained at 1200-1300 DEG C, at such a temperature insulation calcining 30min；
6) cooling: the metallurgical coke particles calcined cools down in revolution cooler, uses multiple nozzle to metallurgical coke
Grain water spray chilling, the discharging when detecting temperature and reaching 120-150 DEG C, form coke；
7) separating twice: the cooled smelter coke completed is ground into, through disintegrating apparatus, little that grain diameter is 0.3-0.5mm
Grain；
8) screening: carry out three level screen through the little granule of smelter coke of separating twice respectively through screening plant, filter out size
Out, three level screen, is to be carried out through 400 mesh, 200 mesh and 100 mesh mesh screens respectively by little for smelter coke granule to consistent granule
Three level screen；The final uniformity improving raw material is had a very big impact by setting up of screening stage, and mentality of designing of the present invention is
Sieved by three grades of screen clothes, thus can be further ensured that the uniformity of raw material degree, improve yield rate；
9) mixing: little for smelter coke granule and binding agent are carried out kneading, forms compound, the little granule of smelter coke and binding agent
Carrying out kneading with the ratio of 5:1, wherein binding agent is coal tar pitch；
10) die mould and heating: in a mold by compressing for above-mentioned compound, being pressed into square sheet shape, its thickness is at 0.01-
Between 0.02mm, form conductive graphite sheet base substrate, arrange in mould and add hot channel, by adding hot channel, compressing is led
Hot graphite flake base substrate tentatively heats, heating and temperature control between 200-300 DEG C, heat time heating time 30min；The present invention is at height
Also set up die mould and heating before temperature graphitization, heat immediately after die mould completes, be by before high temperature graphitization
Individual transition, so can improve the efficiency of high temperature graphitization, enters the gap in high temperature graphitization stove after reducing again die mould；
11) high temperature graphitization: carry out high fire stons in the conductive graphite sheet base substrate of above-mentioned heating is fed directly to high temperature graphitization stove
Inkization operates, and the graphitization temperature scope in pyrographite stove is 1100-1200 DEG C, graphitization time 15-20min；
12) gum: in order to preferably adhere to IC and circuit board, need to carry out gum processing, through pyrographite on conductive graphite sheet
Coat one layer of heat-resisting double faced adhesive tape in its bottom surface when conductive graphite sheet after change is cooled to 50-60 DEG C, and in conductive graphite sheet bottom surface
Adhere to one layer of release paper；The present invention is to carry out gum technique when conductive graphite sheet temperature is down to certain limit, and it is than room temperature
Advantage is that the bioactive molecule enabling to heat-resisting double faced adhesive tape increases, and preferably realizes double faced adhesive tape and release paper and conductive graphite sheet
Bonding, improve gum effect and efficiency；
13) compacting thermal trough: referring to the drawings 1, the conductive graphite sheet 1 after gum is placed in mould, and surface suppresses thereon
Width and the degree of depth are the thermal trough 2 of 1mm；Thermal trough 2 be arranged on heating while by thermal trough 2, heat is led
Stream, it is achieved the purpose of quick conductive；
14) cutting: conductive graphite sheet 1 base substrate after graphitization forms the conductive graphite sheet of finished product, and cooling down, Jin Ertong
Cross cutting equipment and cut into the size of needs.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (5)
1. the technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke, it is characterised in that comprise the following steps:
1) get the raw materials ready: choose the metallurgical coke raw material as conductive graphite sheet；
2) precomminution: above-mentioned metallurgical coke is crushed in advance through disintegrating apparatus the medium size of 60-80mm；
3) pre-screening: the metallurgical coke that above-mentioned warp crushes is sieved by vibrosieve, removes larger particles impurity in metallurgical coke；
4) except ferrum: size-reduced metallurgical coke is carried out in being placed in trash separator except ferrum operates；
5) high-temperature calcination: calcine the metallurgical coke particles through remove impurity in calciner, calcining is divided into four-stage, respectively
For the precalcining stage: this stage is that precalcining phase temperature increases to 200 by increase per minute for the temperature in calciner 40 DEG C
DEG C, this stage calcination time 10 min；Intermediate calcination stage: this stage is by increase by 25 per minute for the temperature in calciner
DEG C, intermediate calcination stage temperature increases to 900 DEG C, this stage calcination time 30 min, and is incubated after temperature is raised to 900 DEG C
10-15min；Rear calcination stage: this stage is by increase per minute for the temperature in calciner 20 DEG C, and rear calcination stage temperature increases
Add to 1200-1300 DEG C, this stage calcination time 15-20 min；Insulation calcination stage: the temperature in this stage is always held at
1200-1300 DEG C, insulation calcining 30min at such a temperature；
6) cooling: the metallurgical coke particles calcined cools down in revolution cooler, uses multiple nozzle to metallurgical coke
Grain water spray chilling, the discharging when detecting temperature and reaching 120-150 DEG C, form coke；
7) separating twice: the cooled smelter coke completed is ground into, through disintegrating apparatus, little that grain diameter is 0.3-0.5mm
Grain；
8) screening: carry out three level screen through the little granule of smelter coke of separating twice respectively through screening plant, filter out size
Consistent granule is out；
9) mixing: little for smelter coke granule and binding agent are carried out kneading, forms compound；
10) die mould and heating: in a mold by compressing for above-mentioned compound, being pressed into square sheet shape, its thickness is at 0.01-
Between 0.02mm, form conductive graphite sheet base substrate, arrange in mould and add hot channel, by adding hot channel, compressing is led
Hot graphite flake base substrate tentatively heats, heating and temperature control between 200-300 DEG C, heat time heating time 30min；
11) high temperature graphitization: carry out high fire stons in the conductive graphite sheet base substrate of above-mentioned heating is fed directly to high temperature graphitization stove
Inkization operates；
12) gum: the conductive graphite sheet after high temperature graphitization is cooled to when 50-60 DEG C heat-resisting two-sided its bottom surface coating one layer
Glue, and one layer of release paper is adhered in conductive graphite sheet bottom surface；
13) compacting thermal trough: the conductive graphite sheet after gum is placed in mould, and surface suppresses width and the degree of depth is equal thereon
Thermal trough for 1mm；
14) cutting: the conductive graphite sheet base substrate after graphitization forms the conductive graphite sheet of finished product, and cooling down, Jin Ertong
Cross cutting equipment and cut into the size of needs.
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke the most according to claim 1, its feature exists
In: the trash separator in described step (3) includes trash extraction box, charging aperture, discharging opening and crutcher, at described trash extraction box
At charging aperture, vertically arranged at least one piece is removed iron plate, and is additionally provided with mesh screen uniform distributor at the charging aperture of described trash extraction box.
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke the most according to claim 2, its feature exists
In: arranging rotary open type lid at described charging aperture, described rotary open type lid one end is free end, and the other end passes through
Jointed shaft is hingedly connected on the casing of described trash extraction box.
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke the most according to claim 1, its feature exists
In: described step (7) three level screen, is that through 400 mesh, 200 mesh and 100 mesh mesh screens, little for smelter coke granule is carried out three respectively
Level screening.
The technique preparing high connductivity thermal diffusivity conductive graphite sheet based on metallurgical coke the most according to claim 1, its feature exists
In: in described step (8), the little granule of smelter coke and binding agent carry out kneading with the ratio of 5:1, and wherein binding agent is coal tar pitch.
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| CN201610603101.7A CN106219529B (en) | 2016-07-28 | 2016-07-28 | The technique that highly conductive thermal diffusivity conductive graphite piece is prepared based on metallurgical coke |
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| CN201610603101.7A CN106219529B (en) | 2016-07-28 | 2016-07-28 | The technique that highly conductive thermal diffusivity conductive graphite piece is prepared based on metallurgical coke |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744895A (en) * | 2016-12-28 | 2017-05-31 | 江苏中亚新材料股份有限公司 | A kind of preparation method of high-purity multi-layer graphene |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998001389A1 (en) * | 1996-07-05 | 1998-01-15 | Nippon Pillar Packing Co., Ltd. | Seal stock of inflated graphite and method of manufacturing same |
| CN102344130A (en) * | 2010-08-05 | 2012-02-08 | 常州碳元科技发展有限公司 | High heat dispersion graphite material and manufacturing method thereof |
| CN105712345A (en) * | 2016-03-23 | 2016-06-29 | 中南大学 | Method for preparing graphene powder |
-
2016
- 2016-07-28 CN CN201610603101.7A patent/CN106219529B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998001389A1 (en) * | 1996-07-05 | 1998-01-15 | Nippon Pillar Packing Co., Ltd. | Seal stock of inflated graphite and method of manufacturing same |
| CN102344130A (en) * | 2010-08-05 | 2012-02-08 | 常州碳元科技发展有限公司 | High heat dispersion graphite material and manufacturing method thereof |
| CN105712345A (en) * | 2016-03-23 | 2016-06-29 | 中南大学 | Method for preparing graphene powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744895A (en) * | 2016-12-28 | 2017-05-31 | 江苏中亚新材料股份有限公司 | A kind of preparation method of high-purity multi-layer graphene |
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Effective date of registration: 20191213 Address after: No. 36, Baima Industrial Park, Gaogang District, Taizhou City, Jiangsu Province Patentee after: Lu Jing Address before: 241006 Anhui Province, Wuhu City Economic Development Zone East Ouyang Hu Lu No. 28 Patentee before: WUHU MITEC CO., LTD. |
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Effective date of registration: 20201113 Address after: Room 808, 218 Ningguo Road, Yangpu District, Shanghai 200090 Patentee after: Xinhua (Shanghai) equipment Co., Ltd Address before: No. 36, Baima Industrial Park, Gaogang District, Taizhou City, Jiangsu Province Patentee before: Lu Jing |
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