CN108178154A - The method for cooking of dual-die continuous graphite heat conduction film coiled material - Google Patents
The method for cooking of dual-die continuous graphite heat conduction film coiled material Download PDFInfo
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- CN108178154A CN108178154A CN201810031990.3A CN201810031990A CN108178154A CN 108178154 A CN108178154 A CN 108178154A CN 201810031990 A CN201810031990 A CN 201810031990A CN 108178154 A CN108178154 A CN 108178154A
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Abstract
The present invention relates to a kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, it is characterized in that, include the following steps：（1）PI films according to the length and width of setting are cut, form PI coiled materials through leading volume operation, the center of PI coiled materials has cavity；（2）Graphite planar upper surface is provided with guide groove, PI coiled materials is placed on graphite planar upper surface vertically, and two graphite-pipes are placed on to the both sides of PI coiled material cavitys, in mobile graphite-pipe to the guide groove of graphite planar；（3）By step（2）The tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；（4）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing；（5）Through being carbonized with after graphitization processing, graphite film coiled material is obtained.The present invention can effectively avoid because pyroreaction shrink caused by graphite guide hotting mask fold, be broken and scrap the phenomenon that, produce the graphite film coiled material that surfacing is smooth, thickness is uniform, continuous whole.
Description
Technical field
The present invention relates to a kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, belong to heat conduction technical field.
Background technology
With the development of industrial production and science and technology, people propose Heat Conduction Material new requirement, it is desirable to heat conduction material
Material has excellent comprehensive performance, it is desirable that Heat Conduction Material but also can not only need to have excellent by heat as far as possible mostly with fast export
Different space availability ratio.Because high temperature can directly reduce the performance, reliability and service life of electronic equipment.
Replace the conduction of traditional Heat Conduction Material realization heat in electronics industry using artificial synthesized graphite film at present.Manually
Compound stone ink film is a kind of novel heat-conducting heat sink material, obtained after high temperature cabonization and graphitization by chemical method by PI films.
Graphite guide hotting mask has excellent heat dissipation effect, and horizontal direction thermal conductivity factor is up to 2200W/m k, vertical direction thermal conductivity factor
Up to 22W/m k or so.The thickness of graphite guide hotting mask is can be controlled in the range of 40 microns simultaneously.
During graphite heat conducting film preparation, PI films are generally formed as a kind of polymer compound film after volume is led in cutting
PI film coiled materials are often rolled up PI coiled materials and are wrapped in a graphite pipe outer wall, then will often roll up PI coiled materials and be placed on carbon in a vertical manner
Change and be fired in stove.It is shunk from the outside to the core after high-temperature firing process layer is heated, because being close to graphite on the inside of PI coiled materials
Pipe, PI coiled material internal layers the more can be received the more tight, and the foreign gas of coiled material internal layer can not discharge in time in carbonisation.After carbonization
Easily there is contraction distortion and the phenomenon that fracture is scrapped.
Invention content
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of dual-die continuous graphite heat conduction film roll is provided
The method for cooking of material is moved towards using the stress of two graphite-pipes and offsets PI coiled material heat shrinkable displacements, existed using this method
Can effectively avoid in preparation process because pyroreaction shrink caused by graphite guide hotting mask fold, be broken and scrap the phenomenon that, manufacture
Go out the graphite film coiled material that surfacing is smooth, thickness is uniform, continuous whole.
According to technical solution provided by the invention, the method for cooking of the dual-die continuous graphite heat conduction film coiled material is special
Sign is to include the following steps：
（1）PI films according to the length and width of setting are cut, form PI coiled materials through leading volume operation, the center of PI coiled materials has sky
Chamber；
（2）Graphite planar upper surface is provided with for the free-moving guide groove of graphite-pipe, and PI coiled materials are placed on graphite vertically puts down
Plate upper surface, and two graphite-pipes are placed on to the both sides of PI coiled material cavitys, in mobile graphite-pipe to the guide groove of graphite planar；
（3）By step（2）The tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；
（4）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing；
（5）Through being carbonized with after graphitization processing, graphite film coiled material is obtained.
Further, the step（3）It is carbonized in sintering procedure, carbonization treatment temperature is heated to 1300-1500 DEG C, heating
Time is 8-12 hours.
Further, heating curve is heated in the form of heat stepwise in the carbonization sintering procedure.
Further, the step（4）During graphitization processing, temperature is heated to 2700-2900 DEG C, and heating time is
10-12 hours.
Further, heating curve is heated in the form of heat stepwise during the graphitization processing.
Further, the cavity at the PI coiled materials center is in ellipticity.
The present invention has the following advantages：
（1）The present invention is wound by the way of the PI films of volume 1 using 2 graphite-pipes into stove firing, and 2 graphite-pipes can be in sintering procedure
Film layer is shunk and is moved freely, and after high temperature cabonization without fracture, fold etc. extremely, is not improved by extruding force is shunk between film layer
Product qualification rate；
（2）Using method for cooking of the present invention, the length of monovolume qualification finished product graphite guide hotting mask can be improved by 100 meters to 500 meters of left sides
The right side improves product list furnace output；
（3）Using method for cooking of the present invention, gap uniformity is loose between film layer, is conducive to the row of foreign gas in pyroreaction
Go out, can effectively avoid the abnormal phenomenon for film layer adhesion caking occur.
Description of the drawings
Fig. 1 is the structure diagram of the firing tooling of continuous graphite heat conducting film.
Fig. 2 is the decomposing state schematic diagram of the firing tooling of continuous graphite heat conducting film.
Reference sign：1- graphite nut, 2- upper cover plates, 3- graphite-pipes, 4-PI coiled materials, 5- graphite screw rod, 6- graphite
Bottom plate, 7- lower nuts, 8- guide grooves.
Specific embodiment
With reference to specific attached drawing, the invention will be further described.
Embodiment one：A kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, includes the following steps：
（1）PI films according to the length and width of setting are cut, form PI coiled materials 4 through leading volume operation, the center of PI coiled materials 4 is in class
It is similar to elliptoid cavity；
（2）6 upper surface of graphite planar is provided with for 3 free-moving guide groove 8 of graphite-pipe, and PI coiled materials 4 are placed on stone vertically
Black 6 upper surface of tablet, and two graphite-pipes 3 are placed on to the both sides of 4 cavity of PI coiled materials；Graphite-pipe 3 is moved to graphite planar 6
In guide groove 8, graphite screw rod 5 is vertically arranged by lower nut 7 on graphite planar 4,5 upper end of graphite screw rod passes through graphite nut
1 connection upper cover plate 2, final form should be consistent with tooling form in Fig. 1；
（3）Tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；It is being carbonized in sintering procedure, PI volumes
Material heat shrinkable, two graphite-pipes move towards after by film layer extruding force along guide groove, offset film layer because shrinking the internal force generated,
Therefore be not in the fracture generated due to interior pulling force, film layer adhesion, deformation pleat always in uniform loose's state between film layer
The bad phenomenons such as wrinkle；
（4）It is carbonized in sintering procedure, carbonization treatment temperature is heated to 1300-1500 DEG C, and heating time is 8-12 hours；Heating is bent
Line is heated in the form of heat stepwise, is such as heated to 500 DEG C from initial temperature with the heating rate of 10 DEG C/min, then with 7 DEG C/
The heating rate of min is heated to 750 DEG C, is then heated to 1300 DEG C with the heating rate of 5 DEG C/min, can be protected in Crucial temperature phase
Warm a period of time；
（5）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing, the heating of graphitization processing temperature
To 2700-2900 DEG C, heating time is 10-12 hours；Heating curve is heated in the form of heat stepwise, such as from initial temperature
Be heated to 1000 DEG C, then 1800 DEG C are heated to the heating rate of 8 DEG C/min with the heating rate of 10 DEG C/min, then with 5 DEG C/
The heating rate of min is heated to 2900 DEG C；Simultaneously a period of time can be kept the temperature in key temperatures；
（6）Through be carbonized and graphitization processing after, using the preparation method can output surface flat smooth, thickness uniformly, it is continuous complete
Whole graphite film coiled material.
Embodiment two：A kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, includes the following steps：
（1）PI films according to the length and width of setting are cut, form PI coiled materials 4 through leading volume operation, the center of PI coiled materials 4 is in class
It is similar to elliptoid cavity；
（2）6 upper surface of graphite planar is provided with for 3 free-moving guide groove 8 of graphite-pipe, and PI coiled materials 4 are placed on stone vertically
Black 6 upper surface of tablet, and two graphite-pipes 3 are placed on to the both sides of 4 cavity of PI coiled materials；Graphite-pipe 3 is moved to graphite planar 6
In guide groove 8, final form should be consistent with tooling form in Fig. 1；
（3）Tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；It is being carbonized in sintering procedure, PI volumes
Material heat shrinkable, two graphite-pipes move towards after by film layer extruding force along guide groove, offset film layer because shrinking the internal force generated,
Therefore be not in the fracture generated due to interior pulling force, film layer adhesion, deformation pleat always in uniform loose's state between film layer
The bad phenomenons such as wrinkle；
（4）It is carbonized in sintering procedure, carbonization treatment temperature is heated to 1300-1500 DEG C, and heating time is 8-12 hours；Heating is bent
Line is heated in the form of heat stepwise, is such as heated to 400 DEG C from initial temperature with the heating rate of 7 DEG C/min, then with 5 DEG C/
The heating rate of min is heated to 650 DEG C, is then heated to 1400 DEG C with the heating rate of 5 DEG C/min, can be protected in Crucial temperature phase
Warm a period of time；
（5）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing, the heating of graphitization processing temperature
To 2700-2900 DEG C, heating time is 10-12 hours；Heating curve is heated in the form of heat stepwise, such as from initial temperature
Be heated to 800 DEG C, then 1500 DEG C are heated to the heating rate of 10 DEG C/min with the heating rate of 5 DEG C/min, then with 8 DEG C/
The heating rate of min is heated to 2700 DEG C；Simultaneously a period of time can be kept the temperature in key temperatures；
（6）Through be carbonized and graphitization processing after, using the preparation method can output surface flat smooth, thickness uniformly, it is continuous complete
Whole graphite film coiled material.
Embodiment three：A kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, includes the following steps：
（1）PI films according to the length and width of setting are cut, form PI coiled materials 4 through leading volume operation, the center of PI coiled materials 4 is in class
It is similar to elliptoid cavity；
（2）6 upper surface of graphite planar is provided with for 3 free-moving guide groove 8 of graphite-pipe, and PI coiled materials 4 are placed on stone vertically
Black 6 upper surface of tablet, and two graphite-pipes 3 are placed on to the both sides of 4 cavity of PI coiled materials；Graphite-pipe 3 is moved to graphite planar 6
In guide groove 8, final form should be consistent with tooling form in Fig. 1；
（3）Tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；It is being carbonized in sintering procedure, PI volumes
Material heat shrinkable, two graphite-pipes move towards after by film layer extruding force along guide groove, offset film layer because shrinking the internal force generated,
Therefore be not in the fracture generated due to interior pulling force, film layer adhesion, deformation pleat always in uniform loose's state between film layer
The bad phenomenons such as wrinkle；
（4）It is carbonized in sintering procedure, carbonization treatment temperature is heated to 1300-1500 DEG C, and heating time is 8-12 hours；Heating is bent
Line is heated in the form of heat stepwise, is such as heated to 450 DEG C, then from initial temperature with the heating rate of 15 DEG C/min with 10
DEG C/heating rate of min is heated to 700 DEG C, 1400 DEG C then are heated to the heating rate of 7 DEG C/min, in Crucial temperature phase
A period of time can be kept the temperature；
（5）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing, the heating of graphitization processing temperature
To 2700-2900 DEG C, heating time is 10-12 hours；Heating curve is heated in the form of heat stepwise, such as from initial temperature
1150 DEG C are heated to, then 1900 DEG C are heated to the heating rate of 10 DEG C/min with the heating rate of 12 DEG C/min, then with 8
DEG C/heating rate of min is heated to 2800 DEG C；Simultaneously a period of time can be kept the temperature in key temperatures；
（6）Through be carbonized and graphitization processing after, using the preparation method can output surface flat smooth, thickness uniformly, it is continuous complete
Whole graphite film coiled material.
Claims (6)
1. a kind of method for cooking of dual-die continuous graphite heat conduction film coiled material, it is characterized in that, include the following steps：
（1）PI films according to the length and width of setting are cut, PI coiled materials are formed through leading volume operation（4）, PI coiled materials（4）Center
With cavity；
（2）Graphite planar（6）Upper surface is provided with for graphite-pipe（3）Free-moving guide groove（8）, by PI coiled materials（4）Vertically
It is placed on graphite planar（6）Upper surface, and by two graphite-pipes（3）It is placed on PI coiled materials（4）The both sides of cavity, mobile graphite-pipe
（3）To graphite planar（6）Guide groove（8）It is interior；
（3）By step（2）The tooling is placed on the graphite cake in carbide furnace, carries out carbonization firing processing；
（4）Carbonization, which fires to terminate the tooling being transferred in graphitizing furnace, carries out graphitization processing；
（5）Through being carbonized with after graphitization processing, graphite film coiled material is obtained.
2. the method for cooking of dual-die continuous graphite heat conduction film coiled material as described in claim 1, it is characterized in that：The step
（3）It is carbonized in sintering procedure, carbonization treatment temperature is heated to 1300-1500 DEG C, and heating time is 8-12 hours.
3. the method for cooking of dual-die continuous graphite heat conduction film coiled material as claimed in claim 2, it is characterized in that：The carbonization is burnt
Heating curve is heated in the form of heat stepwise during system.
4. the method for cooking of dual-die continuous graphite heat conduction film coiled material as described in claim 1, it is characterized in that：The step
（4）During graphitization processing, temperature is heated to 2700-2900 DEG C, and heating time is 10-12 hours.
5. the method for cooking of dual-die continuous graphite heat conduction film coiled material as claimed in claim 4, it is characterized in that：The graphitization
Heating curve is heated in the form of heat stepwise in processing procedure.
6. the method for cooking of dual-die continuous graphite heat conduction film coiled material as described in claim 1, it is characterized in that：The PI coiled materials
（4）The cavity at center is in ellipticity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810031990.3A CN108178154A (en) | 2018-01-12 | 2018-01-12 | The method for cooking of dual-die continuous graphite heat conduction film coiled material |
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| CN201810031990.3A CN108178154A (en) | 2018-01-12 | 2018-01-12 | The method for cooking of dual-die continuous graphite heat conduction film coiled material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451500A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | Graphite film carbonization technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140308484A1 (en) * | 2011-11-30 | 2014-10-16 | Kaneka Corporation | Graphite film and method for producing graphite film |
| CN106744792A (en) * | 2016-12-01 | 2017-05-31 | 达迈科技股份有限公司 | For rolling up the graphited polyimide film of burning formula and graphite film manufacturing method |
| CN107311167A (en) * | 2017-06-19 | 2017-11-03 | 广东思泉新材料股份有限公司 | A kind of preparation method of two-fold core graphite coiled material |
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2018
- 2018-01-12 CN CN201810031990.3A patent/CN108178154A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140308484A1 (en) * | 2011-11-30 | 2014-10-16 | Kaneka Corporation | Graphite film and method for producing graphite film |
| CN106744792A (en) * | 2016-12-01 | 2017-05-31 | 达迈科技股份有限公司 | For rolling up the graphited polyimide film of burning formula and graphite film manufacturing method |
| CN107311167A (en) * | 2017-06-19 | 2017-11-03 | 广东思泉新材料股份有限公司 | A kind of preparation method of two-fold core graphite coiled material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451500A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | Graphite film carbonization technique |
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Application publication date: 20180619 |
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