CN108658069B - It is a kind of to support the technique for solving graphite film web-like formation problems with graphite tube - Google Patents
It is a kind of to support the technique for solving graphite film web-like formation problems with graphite tube Download PDFInfo
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- CN108658069B CN108658069B CN201810669856.6A CN201810669856A CN108658069B CN 108658069 B CN108658069 B CN 108658069B CN 201810669856 A CN201810669856 A CN 201810669856A CN 108658069 B CN108658069 B CN 108658069B
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- Prior art keywords
- graphite
- film
- graphite tube
- tube
- film roll
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/205—Preparation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
A kind of to support the technique for solving graphite film web-like formation problems with graphite tube, the present invention relates to graphite heat-conducting fin manufacturing technology fields；Breakage problem of traditional web-like artificial-synthetic stone's ink sheet in high-temperature sintering process is solved by graphite tube supporting way；Fracture leads to product rejection rate 35% ~ 40% in traditional wrapup procedure, and the present invention improves carbonization technique, innovatively applies graphite tube supporting way, the scrappage of graphite film product is reduced to 10 ~ 15%, is obviously improved improvement to the flat appearance degree of product.It reduces product to feed intake cost, promotes the yields of graphite film.
Description
Technical field
The present invention relates to the setting treatment technical field of graphite heat conducting material, in particular to a kind of supported with graphite tube solves
The technique of graphite film web-like formation problems.
Background technique
This is the epoch that a smart electronics rapidly develop, with smart phone, plate, liquid crystal display, great power LED
How the electronic products such as lamp design chip, backlight module, the electricity with the above electronic product of processing constantly to light, thin, miniature development
The thorny problem in the industry of the heat dissipation problems such as pond always.Succeeding in developing for artificial synthesized heat conductive graphite piece can solve this hardly possible very well
Topic: the production method of existing conduction graphite film be individual PI film is sandwiched in be heat-treated in flexible graphite paper to be obtained, but
The specification of graphite film product in this way is small, and production efficiency is low, and is restricted in subsequent applications, therefore how efficiently to produce
Continuous graphite film coiled material is at instantly popular project out.Application No. is 201410040011.2 Chinese patent applications to drape over one's shoulders
The manufacturing method for having revealed a kind of graphite film coiled material, can not only produce graphite film coiled material, but also auxiliary material is soft with this method
Property graphite paper can be with recycling and reusing.But this method since entire graphite film web length is too long, want by rolling step technology
Ask too high, therefore the graphite film length direction produced in practical application easily causes irregular fracture, perforation, is in this way
Subsequent applications bring unnecessary cutting to bother, and are also unfavorable for continuous production, and auxiliary material graphite paper recovery utilization rate is not also high.
Summary of the invention
The present invention against the above deficiency, proposes a kind of technique for being supported with graphite tube and solving graphite film web-like formation problems,
In graphite film carbonisation, irregular fracture, perforation are easily caused in length direction, to find out its cause, because graphite film is set
It being placed in high temperature carbonization furnace, graphite film will appear expansion in carbonisation, is carbonized using web-like, and graphite film irregularly expands,
Cause graphite film cracked, the present invention the characteristics of expanding to a certain degree necessarily occurs in the condition of high temperature in consideration graphite film, solely
Ad hoc its reasonable expansion space of meter, graphite film are unlikely to irregularly to expand mutual extrusion, solve the artificial synthesized graphite flake of web-like
Breakage problem in high-temperature sintering process.
Steps are as follows: (1) slitting is carried out to PI film, the raw material of artificial synthesized graphite flake are polyimides (PI) films,
Abbreviation PI film carries out slitting according to subsequent production specification requirement；
(2) PI film is wound using winder, by the valve switch on winder by the first transmission shaft and second
Transmission shaft opens；
(3) then by PI film around sizing bar, and hand at winding tube core is pulled to across the first transmission shaft and second driving shaft
Dynamic two circle of winding, during winding, sizing bar moves back and forth adjustment constantly to correct the first transmission shaft and the second transmission
Layer tension between axis；
(4) winding parameter is set by winder, particularly designs rolling speed and layer tension size；
(5) boat of dimension is got out, and clean, is then inserted into the positioning ring for fixing graphite tube；
(6) PI film roll is inserted in graphite tube after being put into boat, is particularly inserted in interior graphite tube and outer graphite tube；Interior graphite tube
It is placed on PI film roll center, outer graphite tube is in PI film roll outer ring, then carbon paper is inserted in outside PI film roll, then adjust position, makes stone
Ink cylinder and the gap of PI film roll surrounding are uniform；It repeats the above steps, until piling one layer of boat, then boat is placed into carbide furnace
In；
The outer diameter of interior graphite tube is less than the internal diameter of PI film roll, and the internal diameter of outer graphite tube is greater than the outer diameter of PI film roll, then exists
Graphite tube is inserted among PI film roll, specifically interior graphite tube and outer graphite tube limit the accommodating space of graphite volume, in sintering process
In, graphite volume will appear a degree of expansion, and expansion is typically implemented in the expansion to PI film roll center, and to outside PI film roll
The expansion for enclosing direction, since the interior graphite tube at volume center defines PI film roll degrees of expansion, in the outer graphite of volume outer ring setting
Cylinder defines the winding outside degrees of expansion of film, therefore winding film will not dissipate expansion, but in the volume expansions of restriction, occur
A possibility that crackle, reduces very much, in previous graphitizing process, it will usually which generating winding film fracture leads to scrap of the product
Rate 35% ~ 40%, using this technique, scrapping for product is reduced to 10 ~ 15% by graphite tube supporting way, to the flat appearance of product
Degree is obviously improved improvement.It reduces product to feed intake cost, promotes the yields of graphite film.
Detailed description of the invention
Fig. 1 be the embodiment of the present invention graphite tube boat in pile the structural schematic diagram of graphite tube.
Fig. 2 is a graphite tube schematic diagram of the embodiment of the present invention.
Fig. 3 is the transmission shaft schematic diagram in the winder of the embodiment of the present invention.
Fig. 4 is the schematic diagram for winding tube core.
Specific embodiment
Below with reference to specific embodiments and the drawings, the present invention is described in detail.
Referring to Fig. 1, show the present invention against the above deficiency, propose it is a kind of with graphite tube support solve graphite film web-like at
The technique of type problem in graphite film carbonisation, easily causes irregular fracture, perforation in length direction, to find out its cause,
Because graphite film is seated in high temperature carbonization furnace, graphite film will appear expansion in carbonisation, with then use web-like be carbonized,
The graphite film mutual extrusion of expansion, causes graphite film cracked, and the present invention necessarily occurs in consideration graphite film in the condition of high temperature
The characteristics of expanding to a certain degree, its reasonable expansion space of unique design, graphite film are unlikely to mutual extrusion, and it is artificial to solve web-like
Breakage problem of the compound stone ink sheet in high-temperature sintering process.
Such as Fig. 1, for the schematic diagram for piling graphite tube in graphite tube boat, in the present embodiment, boat 6 placed 20 stones
Ink cylinder, graphite tube are arranged in boat 6.
It is the schematic diagram of a graphite tube such as Fig. 2, it includes interior graphite tube 41 and outer graphite tube 42, outer graphite tube 42
Space spacing with interior graphite tube 41 is R, and the space that outer graphite tube 42 and interior graphite tube 41 are spaced is for placing PI film roll.
It is the transmission shaft schematic diagram in winder, it includes the first transmission shaft 1 and second driving shafts 2, also include such as Fig. 3
It is formed bar 3, sizing bar 3 is placed in the first transmission shaft 1 and the intermediate direction of second driving shaft 2, and the effect of sizing bar 3 is for adjusting the
The Tensity size of film between one transmission shaft 1 and second driving shaft 2, and then to adjust the intermembrane space of the PI film roll after winding.
Such as Fig. 4, for the schematic diagram for winding tube core, outer diameter is greater than the outer diameter of interior graphite tube 41, can ensure that PI film roll in this way
It is inside nested on interior graphite tube 41, and has expansion space.
Steps are as follows: (1) slitting is carried out to PI film, the raw material of artificial synthesized graphite flake are polyimides (PI) films,
Abbreviation PI film carries out slitting according to subsequent production specification requirement；
(2) PI film is wound using winder, is opened the first transmission shaft 1 and second driving shaft 2 by valve switch
It opens；
(3) it then by PI film around sizing bar 3, and is pulled at winding tube core across the first transmission shaft 1 and second driving shaft 2
Two circle of winding manually, during winding, sizing bar 3 moves back and forth adjustment constantly to correct the first transmission shaft 1 and second
Layer tension between transmission shaft 2；
(4) winding parameter is set by winder, particularly designs rolling speed and layer tension size, winds to be formed
PI film roll；
(5) boat 6 of dimension is got out, and clean, is then inserted into the positioning ring for fixing graphite tube；
(6) PI film roll is inserted in graphite tube after being put into boat 6, is particularly inserted in interior graphite tube 41 and outer graphite tube 42；It is interior
For graphite tube 41 at PI film roll center, outer graphite tube 42 is in PI film roll outer ring, then carbon paper is inserted in outside PI film roll, then adjust position
It sets, keeps graphite tube and the gap of PI film roll surrounding uniform；It repeats the above steps, until piling one layer of boat；
The present invention controls the volume thickness of winding film and gap to realize in the spacing of wrapup procedure control film and film,
Then it is inserted in graphite tube, interior graphite tube 41 and outer graphite tube 42 among PI film roll, limits the accommodating space of graphite volume, is being sintered
In the process, graphite volume will appear a degree of expansion, and expansion is typically implemented in the expansion to PI film roll center, and to PI film
The expansion for rolling up outer ring direction, since the interior graphite tube 41 at volume center defines PI film roll degrees of expansion, in the setting of volume outer ring
Outer graphite tube 42 defines the winding outside degrees of expansion of film, therefore winding film will not dissipate expansion, but swollen in the space of restriction
A possibility that swollen, the mode support force of graphite tube support is uniform, and crackle occurs reduces very much, in previous graphitizing process
In, it will usually generating winding film fracture leads to product rejection rate 35% ~ 40%, and using this technique, graphite tube supporting way is by product
Scrap and be reduced to 10 ~ 15%, improvement is obviously improved to the flat appearance degree of product.It reduces product to feed intake cost, promotes graphite
The yields of film.
Fracture of traditional web-like artificial-synthetic stone's ink sheet in high-temperature sintering process is solved by graphite tube supporting way to ask
Topic；Fracture leads to product rejection rate 35% ~ 40% in traditional wrapup procedure, and scrapping for product is reduced to 10 by graphite tube supporting way
~ 15%, improvement is obviously improved to the flat appearance degree of product.It reduces product to feed intake cost, promotes the yields of graphite film.
In the specific implementation process, a other embodiment is to save outer graphite tube 42, because piling PI film roll in boat 6
Situation under, PI film roll is arranged together, and outside expansion space is also to limit, therefore saving outer graphite tube 42 can also be with
Reach identical effect, but in contrast, there is the effect of outer graphite tube 42 more preferable.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (2)
1. a kind of support the technique for solving graphite film web-like formation problems with graphite tube, the device used has the winding of winding
Machine, the graphite tube for being used to support PI film wind tube core, for the turnover box and boat of interim week conversion, and winder includes valve
Door switch, the first transmission shaft, second driving shaft and the sizing bar moved back and forth, processing step are as follows:
(1) slitting is carried out to PI film, the raw material of artificial synthesized graphite flake are Kapton, abbreviation PI film, according to subsequent
Production specification requires to carry out slitting；
(2) PI film is wound using winder, is driven the first transmission shaft and second by the valve switch on winder
Axis opens；
(3) it then by PI film around sizing bar, and is pulled at winding tube core across the first transmission shaft and second driving shaft and receives manually
Two circle of volume, during winding, sizing bar move back and forth adjustment come constantly correct the first transmission shaft and second driving shaft it
Between layer tension；
(4) winding parameter is set by winder, particularly designs rolling speed and layer tension size；
(5) boat of dimension is got out, and clean, is then inserted into the positioning ring for fixing graphite tube；
(6) PI film roll is inserted in graphite tube after being put into boat, is particularly inserted in interior graphite tube and outer graphite tube；Interior graphite tube is placed
At PI film roll center, outer graphite tube is in PI film roll outer ring, then carbon paper is inserted in outside PI film roll, then adjust position, makes graphite tube
It is uniform with the gap of PI film roll surrounding；It repeats the above steps, until piling one layer of boat, then boat is placed in carbide furnace.
2. the technique for solving graphite film web-like formation problems is supported with graphite tube as described in claim 1, which is characterized in that interior
The outer diameter of graphite tube is less than the internal diameter of PI film roll, and the internal diameter of outer graphite tube is greater than the outer diameter of PI film roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669856.6A CN108658069B (en) | 2018-06-26 | 2018-06-26 | It is a kind of to support the technique for solving graphite film web-like formation problems with graphite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669856.6A CN108658069B (en) | 2018-06-26 | 2018-06-26 | It is a kind of to support the technique for solving graphite film web-like formation problems with graphite tube |
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| Publication Number | Publication Date |
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| CN108658069A CN108658069A (en) | 2018-10-16 |
| CN108658069B true CN108658069B (en) | 2019-11-29 |
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Families Citing this family (3)
| 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 |
| CN111688257B (en) * | 2020-05-07 | 2022-03-18 | 无锡宝亿沣密封材料有限公司 | Molding process and device of graphite packing ring |
| CN111646465A (en) * | 2020-06-19 | 2020-09-11 | 江苏格优碳素新材料有限公司 | Production method of ultrathin graphite film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105531227B (en) * | 2014-01-27 | 2017-07-18 | 嘉兴中易碳素科技有限公司 | The manufacture method of graphite film |
| CN205346421U (en) * | 2015-12-29 | 2016-06-29 | 苏州格优碳素新材料有限公司 | Half -finished roll of membrane equipment of package artificial graphite membrane |
| TWI638772B (en) * | 2016-11-29 | 2018-10-21 | 達邁科技股份有限公司 | Polyimide film for calcination graphitization and method for producing graphite film |
| CN107804843B (en) * | 2017-11-20 | 2018-07-10 | 苏州世华新材料科技有限公司 | A kind of preparation process of uniform high heat conduction graphite film coiled material |
| CN108455580A (en) * | 2018-04-04 | 2018-08-28 | 苏州天煜新材料科技有限公司 | A kind of graphene film weblike material and preparation method thereof |
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