CN106478101A - A kind of processing technology of graphite coiled material - Google Patents
A kind of processing technology of graphite coiled material Download PDFInfo
- Publication number
- CN106478101A CN106478101A CN201610893003.1A CN201610893003A CN106478101A CN 106478101 A CN106478101 A CN 106478101A CN 201610893003 A CN201610893003 A CN 201610893003A CN 106478101 A CN106478101 A CN 106478101A
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- CN
- China
- Prior art keywords
- coiled material
- graphite
- processing technology
- graphite coiled
- polyimide film
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62218—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic films, e.g. by using temporary supports
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6581—Total pressure below 1 atmosphere, e.g. vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to graphite coiled material technical field, particularly to a kind of processing technology of graphite coiled material, comprise the steps：A, using polyimide film as raw material film, polyimide film is cut into the strip of Rack, then it is wound；B, the coiled strip of polyimide film in step A is packed with graphite paper, then put into fixture and be sintered, after carbonization, graphited process, finally give graphite coiled material；Carburizing temperature in step B is 1400 ~ 1500 DEG C, the time is 2 ~ 9 hours, and graphitization temperature is 2900 ~ 3000 DEG C, the time is 4 ~ 11 hours.This invention simplifies the technological requirement of cross cutting aspect, improve cross cutting yield 30% about, cross cutting cost 20% about can also be saved simultaneously.
Description
Technical field
The invention belongs to graphite coiled material technical field, particularly to a kind of processing technology of graphite coiled material.
Background technology
At present, various types of electric terminals, such as notebook computer, panel computer, smart mobile phone etc., these equipment
Function is stronger and stronger, and arithmetic speed is more and more faster, the less and less heat dissipation problem leading to be difficult to avoid of size, and this is all attributed to
The caloric value of electric terminal is increasing or heat generating spot is increasingly concentrated.How to solve heat dissipation problem, be all electric terminals
The technical barrier that production firm is faced.
Electrographite film Heat Conduction Material, because its distinctive low-density and high thermal conductivity coefficient become hyundai electronicses class product and solve
The preferred material of radiating heat conduction technology.But, due to being affected by production technology, electrographite film is mainly given birth to sheet form
Produce, this brings inconvenience to the cross cutting processing in later stage, and the particularly practical efficiency of material cannot improve.The electrographite of lamellar
Film needs to connect a piece of formation coil structure on bed die that is affixed on by a piece of for graphite film before cross cutting, and the graphite film of web-like passes through cross cutting
Machine cuts into finished product.Common problem is at present：When flake graphite film is affixed on counterdie, the distance between piece and piece are no
Method controls, and the graphite film material specification of monolithic is fixing, therefore can lead to cause with the carrying out of cross cutting substantial amounts of be not inconsistent
Close the scrap of size.In addition, graphite film goes out in discovery die-cutting device away from the material not waiting, there is also in front and back deviation between left and right
When now drawing material deviation, trouble when not only adjusting cross cutting, inaccurate, and the benchmark not adjusted during error occurs.
Content of the invention
It is an object of the invention to：For the deficiencies in the prior art, and provide a kind of processing technology of graphite coiled material, utilize
The graphite coiled material that this technique is made is so that be easy to adjust in cross cutting utilization rate raising and die cutting process.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of processing technology of graphite coiled material, comprises the steps：
A, using polyimide film as raw material film, polyimide film is cut into the strip of Rack, then it is carried out
Winding；
B, the coiled strip of polyimide film in step A is packed with graphite paper, then put into fixture and be sintered, through carbon
Graphite coiled material is finally given after change, graphited process；
Carburizing temperature in step B is 1400 ~ 1500 DEG C, the time is 2 ~ 9 hours, and graphitization temperature is 2900 ~ 3000 DEG C, time
For 4 ~ 11 hours.
As a kind of improvement of the processing technology of the described graphite coiled material of invention, need to be dropped after coiled strip carries out carbonization
Warm cooling treatment is so that the temperature of coiled strip reaches 200 ~ 300 DEG C.
As a kind of improvement of the processing technology of the described graphite coiled material of invention, carbonization technique is to enter under vacuum conditions
OK, and vacuum environment be 3 ~ 11Pa.
As a kind of improvement of the processing technology of the described graphite coiled material of invention, the thickness of described graphite coiled material is 17 ~ 100
μm.
As a kind of improvement of the processing technology of the described graphite coiled material of invention, the thickness of described graphite coiled material is 30 ~ 70 μ
m.
The beneficial effects of the present invention is：Avoid size after raw material polyimide film graphitization, need deburring with
The step ensureing size uniformity, need not carry out trimming process, save production cost；Graphite film coiled material is by die-cutting machine simultaneously
During cutting, each cutting die blank can switch to complete product, and graphite film obtains maximally effective utilization, greatly reduces due to stone
What the laminating of ink film piece non-equidistant caused scraps.
Specific embodiment
The present invention is described in further detail below, but embodiments of the present invention not limited to this.
A kind of processing technology of graphite coiled material, comprises the steps：
A, using polyimide film as raw material film, polyimide film is cut into the strip of Rack, then it is carried out
Winding；
B, the coiled strip of polyimide film in step A is packed with graphite paper, then put into fixture and be sintered, through carbon
Graphite coiled material is finally given after change, graphited process；
Carburizing temperature in step B is 1400 ~ 1500 DEG C, the time is 2 ~ 9 hours, and graphitization temperature is 2900 ~ 3000 DEG C, time
For 4 ~ 11 hours.
Need to carry out cooling down process so that the temperature of coiled strip reaches 200 ~ 300 DEG C, in carbon after coiled strip carries out carbonization
Need after change to carry out the cooling treatment of 48 hours, if directly coming out of the stove if not cooling treatment, the quality of product can be affected, and
Product under the condition of high temperature is also unsuitable for carrying.
Carbonization technique of the present invention is to carry out under vacuum conditions, and vacuum environment is 3 ~ 11Pa.
Usually, the thickness of described graphite coiled material be 17 ~ 100 μm, specifically can select 17 μm, 25 μm, 30 μm, 40 μm,
50 μm, 70 μm and 100 μm of equal-specifications.
It should be noted that：This invention simplifies the technological requirement of cross cutting aspect, improve cross cutting yield 30% about, with
When can also save cross cutting cost 20% about.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in above-mentioned specific embodiment, every those skilled in the art exist
On the basis of the present invention, done any conspicuously improved, replacement or modification belong to protection scope of the present invention.This
Outward, although employing some specific terms in this specification, these terms merely for convenience of description, not to the present invention
Constitute any restriction.
Claims (5)
1. a kind of processing technology of graphite coiled material is it is characterised in that comprise the steps：
A, using polyimide film as raw material film, polyimide film is cut into the strip of Rack, then it is carried out
Winding；
B, the coiled strip of polyimide film in step A is packed with graphite paper, then put into fixture and be sintered, through carbon
Graphite coiled material is finally given after change, graphited process；
Carburizing temperature in step B is 1400 ~ 1500 DEG C, the time is 2 ~ 9 hours, and graphitization temperature is 2900 ~ 3000 DEG C, time
For 4 ~ 11 hours.
2. graphite coiled material according to claim 1 processing technology it is characterised in that：Need after coiled strip carries out carbonization into
Row cooling down is processed so that the temperature of coiled strip reaches 200 ~ 300 DEG C.
3. graphite coiled material according to claim 1 processing technology it is characterised in that：Carbonization technique is under vacuum conditions
Carry out, and vacuum environment is 3 ~ 11Pa.
4. graphite coiled material according to claim 1 processing technology it is characterised in that：The thickness of described graphite coiled material is 17
~100μm.
5. graphite coiled material according to claim 4 processing technology it is characterised in that：The thickness of described graphite coiled material is 30
~70μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893003.1A CN106478101A (en) | 2016-10-13 | 2016-10-13 | A kind of processing technology of graphite coiled material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893003.1A CN106478101A (en) | 2016-10-13 | 2016-10-13 | A kind of processing technology of graphite coiled material |
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| Publication Number | Publication Date |
|---|---|
| CN106478101A true CN106478101A (en) | 2017-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610893003.1A Pending CN106478101A (en) | 2016-10-13 | 2016-10-13 | A kind of processing technology of graphite coiled material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151012A (en) * | 2017-06-19 | 2017-09-12 | 广东思泉新材料股份有限公司 | A kind of preparation method of single rolled cores graphite coiled material |
| 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 |
| CN108249433A (en) * | 2018-03-21 | 2018-07-06 | 无锡汉成新材料科技有限公司 | The production method of blowning installation and graphite film |
| CN110451965A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | The production technology of the artificial synthesized graphite film of super thick |
| CN112591743A (en) * | 2020-12-28 | 2021-04-02 | 碳元科技股份有限公司 | Super-thick foamed graphite, preparation method thereof and conductive heating material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003381A (en) * | 2014-06-13 | 2014-08-27 | 江苏悦达新材料科技有限公司 | Method for preparing high-thermal-conductivity graphite membrane coiled material |
| CN204136538U (en) * | 2014-08-30 | 2015-02-04 | 山东安诺克新材料有限公司 | A kind of novel graphite heat conducting film production system |
| CN204730660U (en) * | 2015-06-12 | 2015-10-28 | 东莞市鸿亿导热材料有限公司 | A kind of fixture for graphite flake sintering |
-
2016
- 2016-10-13 CN CN201610893003.1A patent/CN106478101A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003381A (en) * | 2014-06-13 | 2014-08-27 | 江苏悦达新材料科技有限公司 | Method for preparing high-thermal-conductivity graphite membrane coiled material |
| CN204136538U (en) * | 2014-08-30 | 2015-02-04 | 山东安诺克新材料有限公司 | A kind of novel graphite heat conducting film production system |
| CN204730660U (en) * | 2015-06-12 | 2015-10-28 | 东莞市鸿亿导热材料有限公司 | A kind of fixture for graphite flake sintering |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151012A (en) * | 2017-06-19 | 2017-09-12 | 广东思泉新材料股份有限公司 | A kind of preparation method of single rolled cores graphite coiled material |
| 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 |
| CN108249433A (en) * | 2018-03-21 | 2018-07-06 | 无锡汉成新材料科技有限公司 | The production method of blowning installation and graphite film |
| CN108249433B (en) * | 2018-03-21 | 2023-04-07 | 无锡汉成新材料科技有限公司 | Blowing device and production method of graphite film |
| CN110451965A (en) * | 2019-09-10 | 2019-11-15 | 北京中石伟业科技无锡有限公司 | The production technology of the artificial synthesized graphite film of super thick |
| CN112591743A (en) * | 2020-12-28 | 2021-04-02 | 碳元科技股份有限公司 | Super-thick foamed graphite, preparation method thereof and conductive heating material |
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Application publication date: 20170308 |