CN110526229A - A kind of graphene carbon nanotube composite heat-conducting thin-film material and preparation method thereof - Google Patents
A kind of graphene carbon nanotube composite heat-conducting thin-film material and preparation method thereof Download PDFInfo
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- CN110526229A CN110526229A CN201910895842.0A CN201910895842A CN110526229A CN 110526229 A CN110526229 A CN 110526229A CN 201910895842 A CN201910895842 A CN 201910895842A CN 110526229 A CN110526229 A CN 110526229A
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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
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
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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
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
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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
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/24—Thermal properties
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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
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/24—Thermal properties
Abstract
The invention discloses a kind of graphene carbon nanotube composite heat-conducting thin-film materials and preparation method thereof, are mainly used for the fields such as electronic component, mobile phone heat dissipation, LED light.By graphene oxide dispersion and carbon nano tube dispersion liquid it is respectively evenly dispersed after, be uniformly mixed, be added in solidification liquid, then this mixed liquor is applied in substrate and is dried.Aforesaid operations are repeated, the film of the corresponding number of plies can be obtained as needed；This process makes graphene oxide, the group in group and solidification liquid in carbon nanotube spontaneously form covalent bond, crosslinking self assembly rapidly, be conducive to improve the thermally conductive and coefficient of heat transfer in graphene Z-direction, obtain high performance composite film, repeatable operation process makes film performance controllable with thickness.Preparation method of the present invention is simple, low in cost, and gained laminated film has high-termal conductivity, and scale of mass production may be implemented.
Description
Technical field
The present invention relates to a kind of graphene carbon nanotube composite heat-conducting thin-film materials and preparation method thereof, and it is compound to belong to graphene
Field of material technology.
Background technique
Graphene is the substance that a kind of carbon atom of two-dimensional surface monoatomic layer thickness Hexagonal array is constituted, and has height
Charge mobility, high mechanical strength, the excellent performance such as high surface area, in thin-film solar cells, FPD electrode, electricity
Container, lithium electricity and coating machinery enhanced strength etc. have a wide range of applications.
It is most commonly seen with vapour deposition process and oxidation-reduction method in the preparation method of graphene film, obtained graphene
Film has good electric conductivity, thermal conductivity and mechanical strength；The lamella of graphene film two-dimensional square in the horizontal direction at present
Upward thermal coefficient can reach 1800K/m2, the coefficient of heat transfer on Z axis is no more than 10K/m2.Therefore, the synthesis of graphene film dissipates
Hot coefficient is not highly desirable, seriously limits application of the grapheme material on electronic component.
Summary of the invention
The object of the present invention is to provide a kind of graphene carbon nanotube composite heat-conducting thin-film materials and preparation method thereof, so that
Group in graphene oxide and carbon nanotube and solidification liquid spontaneously forms covalent bond, is crosslinked self assembly rapidly, by graphene with
Carbon nanotube connects together, and method is simple, low in cost.
Technical solution: by graphene oxide dispersion and carbon nano tube dispersion liquid it is respectively evenly dispersed after, be uniformly mixed, add
Enter in solidification liquid, then this mixed liquor is applied in substrate and is dried.Aforesaid operations are repeated, equivalent layer can be obtained as needed
Several films；This process makes graphene oxide, the group in group and solidification liquid in carbon nanotube spontaneously form covalent bond,
Crosslinking self assembly rapidly is conducive to improve the thermally conductive and coefficient of heat transfer in graphene Z-direction, obtains high performance composite film,
Repeatable operation process makes film performance controllable with thickness.
Wherein, first by graphene oxide aqueous dispersions and carbon nanotube it is evenly dispersed after, be added in solidification liquid, be coated
Onto substrate, then takes out substrate and dried, the graphene composite thin film of single layer self assembly can be obtained.With multiple
It closes and is coated with graphene oxide aqueous dispersions in the substrate of film, repeat immersion-drying-coating, the controllable carbon of thickness can be obtained
Nanotube graphene composite thin film material；Wherein graphene oxide dispersion and carbon nano tube dispersion liquid are dispersed in swallow and evaporate
It is obtained in water.
Further, the graphene oxide dispersion and the concentration of carbon nano tube dispersion liquid are 1-25mg/mL.
Further, the substrate is one of glass, poly terephthalic acid ethyl alcohol or silicon.
Further, the concentration of the solidification liquid is 0.1~25mg/mL.
Further, the solvent of the solidification liquid be water, alkane, alcohol all or one of halogenated hydrocarbons.
Further, the temperature is 25 DEG C.
Specific embodiment
For the present invention is further explained, embodiment is given below to illustrate, in subordinate's example, it is several to provide the present invention
Embodiment and composition, however the invention is not limited to using following manner implementation, those skilled in the art are understanding this hair
Change, replacement, the improvement carried out on the basis of bright to the present invention still belongs to the scope of protection of the present invention.
Embodiment 1:
Laminated film is prepared as solidification liquid with the solvent of 1,8- octamethylenediamine, preparation process is as follows:
Be equipped with graphene oxide solution: graphene oxide is using graphite as raw material, using traditional Hummers method or improvement
Method is made；The GO powder that 200mg is lyophilized, is dissolved into 40ml distilled water, ultrasonic disperse 1h, fully dispersed, formation 5mg/
The graphene oxide water solution of ml；
1, the 8- octamethylenediamine of 5mg is taken to be dissolved into 50ml distilled water, ultrasonic disperse 10min, fully dispersed, formation 0.1mg/
Ml solidification liquid.
Above-mentioned graphene oxide water solution is applied in substrate, wherein base material is the glass base of 60mm*30mm*mm
Substrate of glass with graphene oxide water solution is immersed in solidification liquid by bottom, reacts 10min, takes out substrate, room temperature drying
10h, then one layer of graphene oxide water solution will be coated in substrate, immersion-drying-coating process is repeated to get the double-deck oxygen is arrived
Graphite alkene/carbon nano-tube coextruded film.
Claims (6)
1. a kind of graphene carbon nanotube composite heat-conducting thin-film material and preparation method thereof, which is characterized in that first by graphite oxide
It after alkene aqueous dispersions and carbon nanotube are evenly dispersed, is added in solidification liquid, is coated in substrate, then take out substrate and carry out
Drying, can be obtained the graphene composite thin film of single layer self assembly.The coating oxidation stone in the substrate with laminated film
Black alkene aqueous dispersions repeat immersion-drying-coating, the controllable carbon nanotube graphene composite thin film of thickness can be obtained
Material；Wherein graphene oxide dispersion and carbon nano tube dispersion liquid are dispersed in swallow distilled water and obtain.
2. a kind of graphene carbon nanotube composite heat-conducting thin-film material according to claim 1 and preparation method thereof, special
Sign is that the concentration of the graphene oxide dispersion and carbon nano tube dispersion liquid is 1-25mg/mL.
3. a kind of graphene carbon nanotube composite heat-conducting thin-film material according to claim 1 and preparation method thereof, special
Sign is that the substrate is one of glass, poly terephthalic acid ethyl alcohol rank or silicon.
4. a kind of graphene carbon nanotube composite heat-conducting thin-film material according to claim 1 and preparation method thereof, special
Sign is that the concentration of the solidification liquid is 0.1~25mg/mL.
5. a kind of graphene carbon nanotube composite heat-conducting thin-film material according to claim 1 and preparation method thereof, special
Sign is, the solvent of the solidification liquid be water, alkane, alcohol all or one of halogenated hydrocarbons.
6. a kind of graphene carbon nanotube composite heat-conducting thin-film material according to claim 1 and preparation method thereof, special
Sign is that the temperature is 25 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910895842.0A CN110526229A (en) | 2019-09-21 | 2019-09-21 | A kind of graphene carbon nanotube composite heat-conducting thin-film material and preparation method thereof |
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| CN201910895842.0A CN110526229A (en) | 2019-09-21 | 2019-09-21 | A kind of graphene carbon nanotube composite heat-conducting thin-film material and preparation method thereof |
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Citations (5)
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| CN103725263A (en) * | 2013-12-17 | 2014-04-16 | 张家港康得新光电材料有限公司 | Film made from graphene-carbon nanotube composite material and preparation method of film |
| JP2016113651A (en) * | 2014-12-12 | 2016-06-23 | 住友精密工業株式会社 | Composite material having high heat conductivity |
| CN108251076A (en) * | 2016-12-29 | 2018-07-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | Carbon nanotube-graphene composite radiating film, preparation method and application |
| CN109354419A (en) * | 2018-10-29 | 2019-02-19 | 南京新月材料科技有限公司 | A kind of preparation method of high-efficiency heat conduction surface modified graphite alkene film |
| CN110204214A (en) * | 2019-06-13 | 2019-09-06 | 浙江吉利控股集团有限公司 | A kind of preparation method of graphene-based film |
-
2019
- 2019-09-21 CN CN201910895842.0A patent/CN110526229A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725263A (en) * | 2013-12-17 | 2014-04-16 | 张家港康得新光电材料有限公司 | Film made from graphene-carbon nanotube composite material and preparation method of film |
| JP2016113651A (en) * | 2014-12-12 | 2016-06-23 | 住友精密工業株式会社 | Composite material having high heat conductivity |
| CN108251076A (en) * | 2016-12-29 | 2018-07-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | Carbon nanotube-graphene composite radiating film, preparation method and application |
| CN109354419A (en) * | 2018-10-29 | 2019-02-19 | 南京新月材料科技有限公司 | A kind of preparation method of high-efficiency heat conduction surface modified graphite alkene film |
| CN110204214A (en) * | 2019-06-13 | 2019-09-06 | 浙江吉利控股集团有限公司 | A kind of preparation method of graphene-based film |
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