CN107473212A - A kind of synthetic method of synthetic graphite and native graphite mixing coiled material - Google Patents
A kind of synthetic method of synthetic graphite and native graphite mixing coiled material Download PDFInfo
- Publication number
- CN107473212A CN107473212A CN201710562602.XA CN201710562602A CN107473212A CN 107473212 A CN107473212 A CN 107473212A CN 201710562602 A CN201710562602 A CN 201710562602A CN 107473212 A CN107473212 A CN 107473212A
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- CN
- China
- Prior art keywords
- coiled material
- graphite
- native graphite
- synthetic
- melt flow
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/14—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length
- B29C39/18—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
- B29K2079/08—PI, i.e. polyimides or derivatives thereof
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- Carbon And Carbon Compounds (AREA)
Abstract
A kind of synthetic method of synthetic graphite and native graphite mixing coiled material, comprises the following steps：Native graphite coiled material is transmitted along conveyer belt, PI films are melted to form melt flow stream, and melt flow stream is uniformly coated on into native graphite coiled material surface with cast coating method；The native graphite coiled material for being coated with melt flow stream passes through oven, the temperature of the oven is maintained at 290 320 DEG C, by imidization in oven, melt flow stream is solidificated on native graphite coiled material so that melt flow stream forms one with native graphite coiled material, and the coiled material come out from oven is the mixing coiled material for containing native graphite and PI membrane materials；Mixing coiled material is carbonized again and graphitization processing, cooling are obtained by solidifying integral mixing coiled material comprising native graphite and synthetic graphite.Thermal conductivity factor of the present invention is high, and heat resistance is high, and cost is relatively low.
Description
Technical field
The invention belongs to graphite material technical field, specifically a kind of artificial synthesized graphite and native graphite are blended in
The synthetic method of manufactured mixing coiled material together.
Background technology
At present, all types of electric terminal, such as notebook computer, tablet personal computer, smart mobile phone, the function of these equipment
Stronger and stronger, arithmetic speed is more and more faster, more and more frivolous, so that the problem of radiating is difficult to avoid as one, by
Come on the whole in product more next frivolous, therefore its caused heat or heat generating spot are also increasingly concentrated.
Electrographite film Heat Conduction Material, because its distinctive low-density and high thermal conductivity coefficient solve as hyundai electronicses class product
The material first for the heat conduction technology that radiates.But due to being influenceed by production technology, electrographite film is mainly given birth to sheet form
Production, this practical efficiency that inconvenience, particularly material are brought to the cross cutting processing in later stage can not improve.The electrographite of sheet
Film needs to connect graphite film is a piece of a piece of being affixed on bed die and form coil structure before cross cutting.The graphite film of web-like passes through cross cutting
Machine-cut is cut into finished product.
Native graphite price is relatively low, but thermal conductivity factor is poor.Synthetic graphite thermal conductivity factor is higher, but price is higher.
For processing of compromising, and can apply in some occasions, it is necessary to there is all moderate graphite coiled material of a kind of price and thermal conductivity factor.
Existing processing mode is by double faced adhesive tape viscose glue compound stone ink sheet in natural graphite flakes.Although the graphite flake price of this structure
Low than synthetic graphite, thermal conductivity is higher than natural graphite flakes, but finds in actual use, resistance to due to double faced adhesive tape
Warm nature is limited, therefore can cause two-sided fusing if higher temperature is run into, ineffective, i.e., overall heat resistance is poor.Separately
Outside, double faced adhesive tape has certain thickness so that the thickness of the graphite flake of this kind of structure type is larger, it is difficult in relatively thin product
Using.
The content of the invention
The technical problem to be solved in the present invention is to provide the synthetic method of a kind of synthetic graphite and native graphite mixing coiled material,
Thermal conductivity factor is high, and heat resistance is high, and cost is relatively low.
In order to solve the above-mentioned technical problem, the present invention takes following technical scheme：
A kind of synthetic method of synthetic graphite and native graphite mixing coiled material, comprises the following steps：
Native graphite coiled material is transmitted along conveyer belt, PI films melt to form melt flow stream, by melt flow stream with cast coating method
It is uniformly coated on native graphite coiled material surface；
The native graphite coiled material for being coated with melt flow stream passes through oven, and the temperature of the oven is maintained at 290-320 DEG C, is drying
By imidization in oven, melt flow stream, which is solidificated on native graphite coiled material, causes melt flow stream to form one with native graphite coiled material
Body, the coiled material come out from oven are the mixing coiled material for containing native graphite and PI membrane materials；
Mixing coiled material is sent again carbonization treatment is carried out in carbide furnace；
First cooled down after the completion of carbonization treatment, be then then sent through in graphitizing furnace and carry out graphitization processing；
After graphitization processing, cooling is obtained by solidifying integral mixing coiled material comprising native graphite and synthetic graphite.
The oven is continuous tunnel furnace.
Temperature linearity is heated to 1200-1400 DEG C during the carbonization treatment, the heat time is 20-26 hours.
Temperature linearity is heated to 2800-3000 DEG C during the graphitization processing, the heat time is 32-38 hours.
The mixing coiled material comprising synthetic graphite and native graphite that the present invention obtains, straight forming are integrated, it is not necessary to volume
Outer connection component, there is higher heat resistance and thermal conductivity factor, price is lower compared with synthetic graphite, and due to not needing volume
Exterior part, thickness are smaller.
Brief description of the drawings
Accompanying drawing 1 is the synthesis schematic diagram of PI membrane materials and native graphite coiled material in the present invention.
Embodiment
For the ease of the understanding of those skilled in the art, the invention will be further described below in conjunction with the accompanying drawings.
Present invention is disclosed the synthetic method of a kind of synthetic graphite and native graphite mixing coiled material, comprise the following steps：
Native graphite coiled material 1 is transmitted along conveyer belt, PI films（Polyimide film）Melting forms melt flow stream 2, and melting is flowed
Body is uniformly coated on native graphite coiled material surface with cast coating method.PI films become melting stream using conventional processing mode
Body.
The native graphite coiled material for being coated with melt flow stream passes through oven 3, and the temperature of the oven is maintained at 290-320
DEG C, by imidization in oven, melt flow stream, which is solidificated on native graphite coiled material, causes melt flow stream and native graphite coiled material
One is formed, the coiled material come out from oven is the mixing coiled material 4 for containing native graphite and PI membrane materials, as shown in Figure 1.
During native graphite web transport, the melt flow stream of PI membrane materials is uniformly coated on using the coating apparatus in the external world
Native graphite coiled material surface in transmitting procedure, is then baked solidification by oven so that the melt flow stream of PI membrane materials
Mutually solidify with native graphite coiled material so that both go completely into one.
Mixing coiled material is sent again carbonization treatment is carried out in carbide furnace.
First cooled down after the completion of carbonization treatment, be then then sent through in graphitizing furnace and carry out graphitization processing.
After graphitization processing, cooling obtains being rolled up by solidifying integral mixing comprising native graphite and synthetic graphite
Material.Extra connection member is not needed（Such as double faced adhesive tape）, that is, native graphite and synthetic graphite are completely combined integrally, compared
It is smaller in the existing natural graphite flakes for needing to use double faced adhesive tape to be bonded and the structure of compound stone ink sheet, thickness.It is and resistance to
Hot height, thermal conductivity factor are higher.It is lower compared to synthetic graphite cost.
The oven is continuous tunnel furnace.
Temperature linearity is heated to 1200-1400 DEG C during the carbonization treatment, the heat time is 20-26 hours.Graphitization
Temperature linearity is heated to 2800-3000 DEG C during processing, the heat time is 32-38 hours.Processing at carbonization and graphite is adopted
With graphitization processing technique well-known to those skilled in the art, it is not particularly limited, will not be repeated here.
It should be noted that described above is not the restriction to technical solution of the present invention, the wound of the present invention is not being departed from
It is any obviously to replace within protection scope of the present invention on the premise of making design.
Claims (4)
1. the synthetic method of a kind of synthetic graphite and native graphite mixing coiled material, comprises the following steps：
Native graphite coiled material is transmitted along conveyer belt, PI films melt to form melt flow stream, by melt flow stream with cast coating method
It is uniformly coated on native graphite coiled material surface；
The native graphite coiled material for being coated with melt flow stream passes through oven, and the temperature of the oven is maintained at 290-320 DEG C, is drying
By imidization in oven, melt flow stream, which is solidificated on native graphite coiled material, causes melt flow stream to form one with native graphite coiled material
Body, the coiled material come out from oven are the mixing coiled material for containing native graphite and PI membrane materials；
Mixing coiled material is sent again carbonization treatment is carried out in carbide furnace；
First cooled down after the completion of carbonization treatment, be then then sent through in graphitizing furnace and carry out graphitization processing；
After graphitization processing, cooling is obtained by solidifying integral mixing coiled material comprising native graphite and synthetic graphite.
2. the synthetic method of synthetic graphite according to claim 1 and native graphite mixing coiled material, it is characterised in that described
Oven is continuous tunnel furnace.
3. the synthetic method of synthetic graphite according to claim 2 and native graphite mixing coiled material, it is characterised in that described
Temperature linearity is heated to 1200-1400 DEG C during carbonization treatment, the heat time is 20-26 hours.
4. the synthetic method of synthetic graphite according to claim 3 and native graphite mixing coiled material, it is characterised in that described
Temperature linearity is heated to 2800-3000 DEG C during graphitization processing, the heat time is 32-38 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562602.XA CN107473212A (en) | 2017-07-11 | 2017-07-11 | A kind of synthetic method of synthetic graphite and native graphite mixing coiled material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562602.XA CN107473212A (en) | 2017-07-11 | 2017-07-11 | A kind of synthetic method of synthetic graphite and native graphite mixing coiled material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107473212A true CN107473212A (en) | 2017-12-15 |
Family
ID=60596271
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710562602.XA Pending CN107473212A (en) | 2017-07-11 | 2017-07-11 | A kind of synthetic method of synthetic graphite and native graphite mixing coiled material |
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Citations (5)
| 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 |
| CN106083051A (en) * | 2016-06-15 | 2016-11-09 | 黄志良 | High conductive graphite heat dissipation film processing technology |
| CN106079808A (en) * | 2016-06-22 | 2016-11-09 | 苏州格优碳素新材料有限公司 | A kind of production technology of Delanium heat dissipation film |
| CN106115670A (en) * | 2016-06-23 | 2016-11-16 | 苏州格优碳素新材料有限公司 | A kind of package Delanium heat dissipation film manufacture method |
| CN106332522A (en) * | 2014-01-26 | 2017-01-11 | 斯迪克新型材料（江苏）有限公司 | High-heat-conductivity graphite film |
-
2017
- 2017-07-11 CN CN201710562602.XA patent/CN107473212A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332522A (en) * | 2014-01-26 | 2017-01-11 | 斯迪克新型材料（江苏）有限公司 | High-heat-conductivity graphite film |
| 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 |
| CN106083051A (en) * | 2016-06-15 | 2016-11-09 | 黄志良 | High conductive graphite heat dissipation film processing technology |
| CN106079808A (en) * | 2016-06-22 | 2016-11-09 | 苏州格优碳素新材料有限公司 | A kind of production technology of Delanium heat dissipation film |
| CN106115670A (en) * | 2016-06-23 | 2016-11-16 | 苏州格优碳素新材料有限公司 | A kind of package Delanium heat dissipation film manufacture method |
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Application publication date: 20171215 |