CN105984868A - Method for obtaining graphene based on graphite stripping through shear force machine and mixed solvent - Google Patents
Method for obtaining graphene based on graphite stripping through shear force machine and mixed solvent Download PDFInfo
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- CN105984868A CN105984868A CN201510091500.5A CN201510091500A CN105984868A CN 105984868 A CN105984868 A CN 105984868A CN 201510091500 A CN201510091500 A CN 201510091500A CN 105984868 A CN105984868 A CN 105984868A
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Abstract
The invention relates to the technical field of nano material preparation, in particular to a method for obtaining graphene based on graphite stripping through a shear force machine and a mixed solvent. The method comprises the specific steps that a certain amount of graphite with different types is weighed and added into an appropriate amount of mixed solvent, the uniformly mixed solution is placed in a shear force machine to be subjected to stripping for multiple hours, aftertreatment processes such as standing and centrifuging are conducted, and therefore graphene is obtained. The preparation method for producing graphene is mild in condition, green in reaction, simple in raw materials and solvent which are used in the method, free of waste liquid contamination and capable of being used for large-scale preparation and has an application prospect.
Description
Technical field
The present invention relates to technical field prepared by nano material, specifically a kind of molten based on shear force machine and mixing
The method that graphite obtains Graphene is peeled off in agent jointly.
Background technology
Graphene, due to the electronics of its excellence, chemistry, both mechanically and thermally, has attracted researcher to grind greatly
Study carefully interest.Graphene can be used for lithium ion battery, coating, super capacitor, touch screen, heat conducting film, absorption
The fields such as greasy dirt ion.The method having many synthesizing graphite alkenes, such as oxidation-reduction method and chemical gaseous phase deposit
Method, but owing to oxidation-reduction method can introduce defect and oxygen-containing functional group, chemical vapour deposition technique is to equipment requirements
The factor such as higher and relatively costly, limits it and extensively applies.And liquid phase stripping method can make up above-mentioned deficiency
Intrinsic structure and the preparation method of not destroying Graphene due to it are simple, can industrialized production.
Through retrieval, the Chinese invention patent of Publication No. CN103723712A, disclose " a kind of monolayer stone
Ink alkene dimethyl formamide solution preparation method ".It is characterized in that comprising the following steps: be dipped into by graphite
In intercalator, make solvent molecule be intercalation into the interlayer of graphite, obtain compound between graphite layers, the most inflatable stone
Ink.Then quickly being heated under the protection of argon by expansible graphite, the solvent molecule volume of graphite layers is anxious
Speed becomes big and expands, and graphite layers, more than the Van der Waals force of graphite layers, is expanded, expanded by this power
Graphite.Utilize ultrasonic disperse liquid phase stripping method to carry out peeling off screening after obtaining expanded graphite, obtain Graphene
Solution, then through sucking filtration, wash, dry, obtain Graphene pressed powder.By Graphene solid through ultrasonic
It is dispersed in dimethyl formamide solution, obtains being prone to and the Graphene dimethyl methyl of plastics composite membrane-forming material
Amide solution.
Summary of the invention
The present invention uses shearing force machine and mixed solvent jointly to peel off and provides a kind of mild condition, reacts green
Color, raw materials used and solvent be simple, without waste liquor contamination, the new preparation process that can prepare on a large scale.
A kind of jointly peel off, based on shearing force machine and mixed solvent, the method that graphite obtains Graphene, specifically include
Following steps:
Step 1, weighs a certain amount of dissimilar graphite and adds in appropriate mixed solvent；
Step 2, then the solution of mix homogeneously is placed in shearing force machine the process some time, by standing,
It is centrifuged and waits post processing, thus obtain Graphene.
A certain amount of dissimilar graphite in described step 1 is 5mg～1ton, and dissimilar graphite includes
Compact crystal shape graphite, crystalline flake graphite, aphanitic graphite, expanded graphite, highly oriented pyrolytic graphite etc., mixed
The amount of bonding solvent is 50mL～5kL, and mixed solvent is water/methanol, water/ethanol, water/ethylene glycol, water/the third
Alcohol, water/isopropanol, water/butanol, water/amylalcohol etc. are various common and less than the alcohol compound of 10 carbon atoms,
The volume ratio of mixed solvent is 1: 99～99: 1.
The process time in described step 2 is 20min～5d, and centrifugal speed is 100rpm/min～10000
rpm/min。
Below with reference to accompanying drawing, the technique effect of design, instantiation and the generation of the present invention is described further, with
It is fully understood from the present invention.There is provided these descriptive purposes to be only that and help explain the present invention, should not be used to limit
The scope of the claim of the present invention processed.
Accompanying drawing explanation
Fig. 1 is shearing force machine and mixed solvent is jointly peeled off graphite and obtained the schematic diagram of Graphene；
Fig. 2 be shearing force machine and mixed solvent jointly peel off 30min after the Graphene scanning electron microscopy that obtains
Picture.
Detailed description of the invention
Elaborating embodiments of the invention below in conjunction with the accompanying drawings, the present embodiment is with the technology of the present invention side
Implement under premised on case, give detailed embodiment and concrete operating process, but the present invention
Protection domain is not limited to following embodiment.
Embodiment 1
Step 1, weighs 50mg compact crystal shape graphite and adds 200mL water/ethanol (volume ratio is 55: 45)
In；
Step 2, then the solution of mix homogeneously is placed in shearing force machine process 3h, by stand, 1000
Rpm/min is centrifugal waits post processing, thus obtains Graphene.
Embodiment 2
Step 1, weighs 50mg crystalline flake graphite and adds in 200mL water/ethanol (volume ratio is 55: 45)；
Step 2, then the solution of mix homogeneously is placed in shearing force machine process 5h, by stand, 1000
Rpm/min is centrifugal waits post processing, thus obtains Graphene.
Embodiment 3
Step 1, weighs 50mg aphanitic graphite and adds in 200mL water/ethanol (volume ratio is 55: 45)；
Step 2, then the solution of mix homogeneously is placed in shearing force machine process 4h, by stand, 1000
Rpm/min is centrifugal waits post processing, thus obtains Graphene.
Embodiment 4
Step 1, weighs 50mg expanded graphite and adds in 200mL water/ethanol (volume ratio is 55: 45)；
Step 2, then the solution of mix homogeneously is placed in shearing force machine process 2h, by stand, 1000
Rpm/min is centrifugal waits post processing, thus obtains Graphene.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art
Just many modifications and variations can be made according to the design of the present invention without creative work.Therefore, all technology neck
In territory, technical staff is the most on the basis of existing technology by logical analysis, reasoning or limited
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (8)
1. jointly peel off, based on shearing force machine and mixed solvent, the method that graphite obtains Graphene, its feature
Being, the method comprises the following steps:
Step 1, weighs a certain amount of dissimilar graphite and adds in appropriate mixed solvent；
Step 2, then the solution of mix homogeneously is placed in shearing force machine the process some time, by standing,
It is centrifuged and waits post processing, thus obtain Graphene.
2. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that a certain amount of dissimilar graphite is 5mg～1ton.
3. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that dissimilar graphite include compact crystal shape graphite,
Crystalline flake graphite, aphanitic graphite, expanded graphite, highly oriented pyrolytic graphite etc..
4. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that the amount of mixed solvent is 50mL～5kL.
5. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that mixed solvent is water/methanol, water/ethanol, water/second two
Alcohol, water/propanol, water/isopropanol, water/butanol, water/amylalcohol etc. are various common and former less than 10 carbon
The alcohol compound of son.
6. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that the volume ratio of mixed solvent is 1: 99～99: 1.
7. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that the process time is 20min～5d.
8. jointly peel off graphite according to the one described in claim 1 based on shearing force machine and mixed solvent
The method obtaining Graphene, it is characterised in that centrifugal speed is 100rpm/min～10000
rpm/min。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510088579 | 2015-02-26 | ||
| CN2015100885796 | 2015-02-26 |
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| CN105984868A true CN105984868A (en) | 2016-10-05 |
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| CN201510091500.5A Pending CN105984868A (en) | 2015-02-26 | 2015-03-02 | Method for obtaining graphene based on graphite stripping through shear force machine and mixed solvent |
| CN201510216474.4A Pending CN106145095A (en) | 2015-02-26 | 2015-04-28 | A kind of method obtaining Graphene based on shearing force machine stripping graphite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817382A (en) * | 2017-11-21 | 2019-05-28 | 山东欧铂新材料有限公司 | A kind of preparation method of high-stability graphene electrocondution slurry |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368623A (en) * | 2018-09-20 | 2019-02-22 | 苏州博努奇纺织有限公司 | A kind of nano metal intercalated graphite alkene preparation method |
| CN112310401A (en) * | 2020-11-03 | 2021-02-02 | 天津大学 | Preparation method of lithium ion battery negative electrode material and conductive agent |
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2015
- 2015-03-02 CN CN201510091500.5A patent/CN105984868A/en active Pending
- 2015-04-28 CN CN201510216474.4A patent/CN106145095A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817382A (en) * | 2017-11-21 | 2019-05-28 | 山东欧铂新材料有限公司 | A kind of preparation method of high-stability graphene electrocondution slurry |
| CN109817382B (en) * | 2017-11-21 | 2020-09-29 | 山东欧铂新材料有限公司 | Preparation method of high-stability graphene conductive paste |
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| CN106145095A (en) | 2016-11-23 |
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| DD01 | Delivery of document by public notice |
Addressee: Suzhou graphene Nano Technology Co., Ltd. Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Suzhou graphene Nano Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |