CN110845752B - Composite graphene heat-conducting film with bionic structure and preparation thereof - Google Patents
Composite graphene heat-conducting film with bionic structure and preparation thereof Download PDFInfo
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- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
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- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
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Abstract
The invention discloses a composite graphene heat-conducting film with a bionic structure, which is constructed into a shell-like brick-slurry structure after being assembled by nano-cellulose, polyethyleneimine and graphene layer layers; the composite membrane is prepared from the following components in percentage by mass: 2% -90% of graphene and 10% -98% of nano-cellulose and polyethyleneimine. The invention also provides a preparation method of the composition. The method comprises the following steps: (1) preparing a nano cellulose membrane; (2) assembling and preparing a nano-cellulose/polyethyleneimine/graphene oxide composite membrane layer by layer; (3) reducing a composite film, and (4) heating at ultraviolet irradiation or high temperature to obtain the composite graphene heat-conducting film. According to the invention, the overall structure and thickness of the prepared composite graphene heat-conducting film can be controlled by respectively controlling the layered structure and thickness in each step. The method is easy to industrialize, and the heat-conducting film has a stable structure, a tensile strength of 162MPa and excellent flexibility.
Description
Technical Field
The invention relates to a heat-conducting composite material and a preparation method thereof, in particular to a composite graphene heat-conducting film with a bionic structure and a preparation method thereof.
Background
As modern electronic devices are developed toward miniaturization, high integration, and multifunction, a large amount of heat is generated and collected. If the heat cannot be discharged in time, the electronic device may be damaged or even explode, so it is very necessary to research a high performance thermal management device with good heat dissipation characteristics. The carbon material (such as graphene, nanodiamond, carbon fiber and the like) has ultrahigh heat conductivity coefficient, and has the advantages of low density and high thermal stability compared with the traditional heat-conducting filler (such as aluminum oxide, aluminum nitride and the like), so that the carbon material is expected to replace the traditional heat-conducting filler, is combined with a polymer (such as cellulose, nylon and the like) with low heat conductivity coefficient, improves the heat conductivity of the composite material, and expands the application range.
Among many carbon materials, two-dimensional graphene is composed of a monolayer of carbon atoms, each with an SP2And (3) a hybridization mode is adopted, and a hexagonal honeycomb structure is finally obtained through the action of a covalent bond. The heat conductivity coefficient of the single-layer graphene can reach 5300 W.m measured by experiments-1·K-1Far exceeding other heat-conducting fillers, and thus receiving wide attention.
At present, a plurality of patents exist at home and abroad for researching the heat-conducting property of a composite material of nano-cellulose and graphene, for example, a flexible nano-cellulose-graphene composite membrane and a preparation method thereof are disclosed in Chinese patent publication No. CN105860143A, the invention discloses that nano-cellulose and graphene oxide are assembled layer by using nano-cellulose as a base membrane and a dipping and pulling method, and compared with a pure nano-cellulose membrane, the heat-conducting property of the composite membrane is obviously improved, and the composite membrane has a large anisotropic heat-conducting coefficient. However, the interlayer interaction of the composite membrane is low, so that the stability of the membrane is also influenced by various factors such as a solvent, the pH value of a solution, the ionic strength of the solution and the like, and the membrane structure is not stable enough in practical application.
In addition, the chinese patent publication No. CN108584928 discloses a preparation method of a graphene thermal conductive film, which comprises the steps of heating graphene oxide at 80-90 ℃ for 1-3 hours, cooling, transferring the graphene oxide film into a reaction kettle, and introducing nitrogen gas for high-temperature treatment to obtain the graphene thermal conductive film. The thermal conductivity coefficient of the graphene film is quite high, but the pure graphene film has poor mechanical properties such as strength and toughness, so that the wide application of the graphene film is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and the invention aims to provide a composite graphene heat-conducting film with a bionic structure and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
the composite graphene heat-conducting film with the bionic structure is characterized in that the heat-conducting film is assembled by nano cellulose, polyethyleneimine and graphene layer layers to form a brick-slurry structure similar to a shell; the composite membrane is prepared from the following components in percentage by mass: 2% -90% of graphene and 10% -98% of nano-cellulose and polyethyleneimine.
The preparation method of the composite graphene heat-conducting film with the bionic structure is characterized by comprising the following steps:
(1) preparing a nano cellulose membrane;
(2) assembling the nano cellulose membrane in the step (1) as a base membrane layer by layer, and repeatedly operating for the required times to sequentially assemble the layers to prepare the nano cellulose/polyethyleneimine/graphene oxide composite membrane;
(3) reducing the composite film prepared in the step (2) to prepare a multilayer composite nano-cellulose/polyethyleneimine/reduced graphene oxide film;
(4) carrying out ultraviolet illumination or high-temperature heating on the film obtained in the step (3) to obtain a composite graphene heat-conducting film, namely the composite graphene heat-conducting film with a bionic structure;
the overall structure and thickness of the prepared composite graphene heat-conducting film can be controlled by respectively controlling the layered structure and thickness of each step.
The preparation of the nano cellulose membrane in the step (1) specifically comprises the following steps: dispersing nano-cellulose in deionized water to prepare nano-cellulose dispersion liquid with the concentration of 0.5 mg/mL-2 mg/mL; and (3) carrying out ultrasonic and vacuum filtration on the dispersion liquid, and carrying out hot pressing in a vacuum drying oven at the temperature of 25-60 ℃ for 12-24 h to obtain the nanocellulose-based membrane.
The step (2) specifically comprises the following steps: sequentially immersing the nanocellulose-based membrane into the nanocellulose-polyethyleneimine mixed dispersion liquid and the graphene oxide dispersion liquid, rinsing in deionized water for 2min after each immersion, and finally drying in an infrared drying oven; after similar rinsing and drying, this is an assembly cycle; and sequentially completing 10-100 assembly periods to obtain the nano-cellulose/polyethyleneimine/graphene oxide composite film with a multilayer structure and multilayer thickness.
The concentrations of the nano-cellulose dispersion liquid and the polyethyleneimine dispersion liquid are respectively 1mg/mL and 2mg/mL, and the used solvent is deionized water.
The nano-cellulose and polyethyleneimine are mixed according to a volume ratio of 1: 1-1: 5, mixing.
The concentration of the graphene oxide is 0.5-5 mg/mL, and the used solvent is deionized water.
The reducing agent in the step (3) is one or more of hydrazine hydrate, sodium borohydride, ascorbic acid, sodium hydroxide and hydrogen iodide.
The preparation conditions of the heat-conducting film in the step (4) are as follows: irradiating for 1-5 h by using ultraviolet light; heating for 2-4 h at 130-250 ℃ in nitrogen atmosphere.
Compared with the prior art, the composite graphene heat-conducting film with the bionic structure and the preparation method thereof provided by the invention have the following advantages:
(1) the composite graphene heat-conducting film with the bionic structure and the preparation method thereof have the advantages that the operation steps are simple, the components and the process are environment-friendly and pollution-free, the key point is that the overall structure and the thickness of the prepared composite graphene heat-conducting film can be controlled by respectively controlling the structure and the thickness of each layer in each step, and the composite graphene heat-conducting film can be produced in a large scale;
(2) according to the composite graphene heat-conducting film with the bionic structure, the nanocellulose-based film is sequentially immersed into a mixed solution of nanocellulose and polyethyleneimine and a graphene oxide solution for layer-by-layer assembly; the nano-cellulose and graphene oxide solution has positive charges by adjusting the volume of the nano-cellulose and the polyethyleneimine solution due to the fact that the surfaces of the nano-cellulose and the graphene oxide contain rich oxygen-containing groups and have negative charges, and the electrostatic effect between ions is used as a film forming driving force, so that the filler cannot agglomerate in a matrix, the polyethyleneimine and the graphene are uniformly dispersed on the nano-cellulose-based film, and the structure and the thickness of the assembled film can be conveniently controlled by the method. Because the electrostatic force is a weak interaction force, the photo-crosslinking reaction or the thermal crosslinking reaction is introduced, so that the ionic bond between layers is converted into a covalent bond, and the stability of the assembled membrane is improved.
(3) The composite graphene heat-conducting film material with the bionic structure has excellent heat-conducting property and mechanical property, and the in-plane heat-conducting coefficient is more than or equal to 10 W.m-1·K-1The tensile strength is not less than 150MPa, the composite film has excellent flexibility, and the variation range of the thermal conductivity coefficient is 0-5% after the composite film is bent for 100 cycles.
In order to more clearly explain the structural features and effects of the present invention, the following detailed description is given with reference to specific embodiments.
The following examples are provided to illustrate specific embodiments of the present invention in more detail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a composite graphene heat-conducting film with a bionic structure is characterized in that a brick-slurry structure similar to a shell is constructed after a heat-conducting film is assembled by nano cellulose, polyethyleneimine and graphene layer layers; the composite membrane is prepared from the following components in percentage by mass: 2% -90% of graphene and 10% -98% of nano-cellulose and polyethyleneimine.
A preparation method of the composite graphene heat-conducting film with the bionic structure comprises the following steps:
(1) preparing a nano cellulose membrane;
(2) assembling the nano cellulose membrane in the step (1) as a base membrane layer by layer, and repeatedly operating for required times (for example, 10-100 times) to sequentially assemble the layers to prepare the nano cellulose/polyethyleneimine/graphene oxide composite membrane;
(3) reducing the composite film prepared in the step (2), and repeatedly operating for the required times to sequentially assemble layers to prepare a multilayer composite nano cellulose/polyethyleneimine/reduced graphene oxide film;
(4) carrying out ultraviolet illumination or high-temperature heating on the film obtained in the step (3) to obtain a composite graphene heat-conducting film, namely the composite graphene heat-conducting film with a bionic structure;
the overall structure and thickness of the prepared composite graphene heat-conducting film can be controlled by respectively controlling the layered structure and thickness in each step.
The preparation of the nano cellulose membrane in the step (1) specifically comprises the following steps: dispersing nano-cellulose in deionized water to prepare nano-cellulose dispersion liquid with the concentration of 0.5 mg/mL-2 mg/mL; and (3) carrying out ultrasonic and vacuum filtration on the dispersion liquid, and carrying out hot pressing in a vacuum drying oven at the temperature of 25-60 ℃ for 12-24 h to obtain the nanocellulose-based membrane.
The step (2) specifically comprises the following steps: sequentially immersing the nanocellulose-based membrane into the nanocellulose-polyethyleneimine mixed dispersion liquid and the graphene oxide dispersion liquid, rinsing in deionized water for 2min after each immersion, and finally drying in an infrared drying oven; after similar rinsing and drying, this is an assembly cycle; and sequentially completing 10-100 assembly periods (or other specific period values), and preparing the nano-cellulose/polyethyleneimine/graphene oxide composite film with 10-100 layers of multilayer structures and multiple layers of thicknesses.
The concentrations of the nano-cellulose dispersion liquid and the polyethyleneimine dispersion liquid are respectively 1mg/mL and 2mg/mL, and the used solvent is deionized water.
The nano-cellulose and polyethyleneimine are mixed according to a volume ratio of 1: 1-1: 5, mixing.
The concentration of the graphene oxide is 0.5-5 mg/mL, and the used solvent is deionized water.
The reducing agent in the step (3) is one or more of hydrazine hydrate, sodium borohydride, ascorbic acid, sodium hydroxide and hydrogen iodide.
The preparation conditions of the heat-conducting film in the step (4) are as follows: irradiating for 1-5 h by using ultraviolet light; heating for 2-4 h at 130-250 ℃ in nitrogen atmosphere.
Example 2: the composite graphene heat-conducting film with the bionic structure and the preparation method thereof are basically the same as those in the embodiment 1, and the differences are as follows:
the composite membrane is prepared from the following components in percentage by mass: 10% of graphene, and 90% of nano-cellulose and polyethyleneimine.
A preparation method of a composite graphene heat-conducting film with a bionic structure comprises the following steps:
(1) dispersing 11.666mL of nano-cellulose in deionized water to prepare nano-cellulose dispersion liquid with the concentration of 2mg/mL, performing ultrasonic and vacuum filtration to obtain a base membrane, and performing hot pressing in a vacuum drying oven at 60 ℃ for 24 hours to obtain a nano-cellulose base membrane;
(2) dispersing 1.633mL of graphene oxide in deionized water to prepare graphene oxide dispersion liquid with the concentration of 1 mg/mL; respectively dispersing 8.3325mL of nano-cellulose and 0.515g of polyethyleneimine in deionized water to prepare 1mg/mL of nano-cellulose dispersion liquid and 2mg/mL of polyethyleneimine solution, and mixing the nano-cellulose and the polyethyleneimine solutions according to the volume ratio of 1:4 to prepare nano-cellulose/polyethyleneimine dispersion liquid;
(3) immersing the nanocellulose-based membrane obtained in the step (1-2) into a nanocellulose-polyethyleneimine solution for 5min, then rinsing in deionized water for 2min, and finally drying in an infrared drying oven in air flow; taking out, immersing the substrate into the graphene oxide solution for 5min, and carrying out similar rinsing and drying processes, wherein the process is an assembly period; assembling for 40 periods to obtain 40 layers of composite nano-cellulose/polyethyleneimine/graphene oxide composite films;
(4) placing the nano-cellulose/polyethyleneimine/graphene oxide composite film in a solution added with a reducing agent for 1h, and heating to 90 ℃ to prepare a nano-cellulose/polyethyleneimine/reduced graphene oxide composite film, wherein the reducing agent is hydrazine hydrate;
(5) and irradiating the nano-cellulose/polyethyleneimine/reduced graphene oxide composite membrane for 1h by using ultraviolet light, or heating the nano-cellulose/polyethyleneimine/reduced graphene oxide composite membrane for 2-4 h at 130-250 ℃ in a nitrogen atmosphere to obtain the composite graphene heat-conducting membrane.
And (3) testing the material performance: the heat conductivity coefficient of the composite graphene heat-conducting film with the bionic structure prepared in the embodiment is tested by adopting a laser flash method, and the in-plane heat conductivity coefficient of the composite graphene heat-conducting film reaches 11.7 W.m-1· K-1(ii) a The tensile strength of the composite film is 162MPa, the composite film has excellent flexibility, and the thermal conductivity coefficient of the composite film is 11.2 W.m after 100 cycles of bending cycle-1·K-1。
Example 3: the composite graphene heat-conducting film with the bionic structure and the preparation method thereof are basically the same as the embodiments 1 and 2, and the difference is that:
the composite membrane is prepared from the following components in percentage by mass: 10% -90% of graphene and 90% of nano-cellulose and polyethyleneimine.
Example 4: the composite graphene heat-conducting film with the bionic structure and the preparation method thereof are basically the same as the embodiments 1-3, and the differences are as follows:
the composite membrane is prepared from the following components in percentage by mass: 5% of graphene, and 95% of nano-cellulose and polyethyleneimine.
The composite graphene heat-conducting film with the bionic structure and the preparation method thereof provided by the invention have the advantages that the preparation process is simple and easy to industrialize, the prepared composite film has obvious easy implementation in all directions and good mechanical properties, and the overall structure and thickness of the prepared composite graphene heat-conducting film can be controlled by respectively controlling the single-layer structure and thickness of each layer in each step.
The preparation process is simple and convenient and easy to industrialize, the heat-conducting film has a stable structure, and the in-plane heat conductivity coefficient reaches 11.7W/(m.K); the tensile strength of the composite film is 162MPa, the composite film has excellent flexibility, and the thermal conductivity coefficient of the composite film after a plurality of bending cycles is 11.2W/(m.K).
The invention is not limited to the above embodiments, and other composite materials obtained by using the same or similar components, proportions and methods, and changing the specific values within the ranges of the proportions of the components described in the invention are within the scope of the invention.
Claims (2)
1. The composite graphene heat-conducting film with the bionic structure is characterized in that the heat-conducting film is assembled by nano cellulose, polyethyleneimine and graphene layer layers to form a composite film of a brick-slurry structure imitating a shell; the composite membrane is prepared by assembling a pre-prepared nano cellulose membrane as a base membrane layer by layer and repeatedly operating for 40 times to prepare a nano cellulose/polyethyleneimine/graphene oxide composite membrane, reducing to obtain a multi-layer composite nano cellulose/polyethyleneimine/reduced graphene oxide membrane, and finally performing ultraviolet illumination or high-temperature heating; the composite membrane is prepared from the following components in percentage by mass: 10% of graphene, and 90% of nano-cellulose and polyethyleneimine.
2. The method for preparing the composite graphene thermal conductive film with the bionic structure according to claim 1 is characterized by comprising the following steps:
(1) preparing a nano cellulose membrane; the method specifically comprises the following steps: dispersing 11.666mL of nano-cellulose in deionized water to prepare nano-cellulose dispersion liquid with the concentration of 2mg/mL, performing ultrasonic and vacuum filtration to obtain a base membrane, and performing hot pressing in a vacuum drying oven at 60 ℃ for 24 hours to obtain a nano-cellulose base membrane;
(2) assembling the nano cellulose membrane in the step (1) as a base membrane layer by layer, and repeatedly operating for 10-100 times to sequentially assemble the layers to prepare a nano cellulose/polyethyleneimine/graphene oxide composite membrane;
the method specifically comprises the following steps: dispersing 1.633mL of graphene oxide in deionized water to prepare graphene oxide dispersion liquid with the concentration of 1 mg/mL; respectively dispersing 8.3325mL of nano-cellulose and 0.515g of polyethyleneimine in deionized water to prepare 1mg/mL of nano-cellulose dispersion liquid and 2mg/mL of polyethyleneimine solution, and mixing the nano-cellulose and the polyethyleneimine solutions according to the volume ratio of 1:4 to prepare nano-cellulose/polyethyleneimine dispersion liquid;
immersing the nanocellulose-based membrane obtained in the step (1) into a nanocellulose/polyethyleneimine dispersion liquid for 5min, then rinsing in deionized water for 2min, and finally drying in an infrared drying oven in air flow; taking out, immersing into the graphene oxide solution for 5min, and performing similar rinsing and drying processes, namely an assembly period, to obtain a single-layer nano-cellulose/polyethyleneimine/graphene oxide composite film; repeating the operation for 40 times to sequentially assemble the layers, and assembling for 40 cycles to obtain 40 layers of the composite nano-cellulose/polyethyleneimine/graphene oxide composite film;
(3) reducing the nano-cellulose/polyethyleneimine/graphene oxide composite film prepared in the step (2), specifically, placing the nano-cellulose/polyethyleneimine/graphene oxide composite film in a solution added with a reducing agent for 1h, and heating to 90 ℃ to prepare the nano-cellulose/polyethyleneimine/reduced graphene oxide composite film, wherein the reducing agent is hydrazine hydrate;
(4) and (3) irradiating the nano-cellulose/polyethyleneimine/reduced graphene oxide composite membrane prepared in the step (3) with ultraviolet light for 1h, or heating the nano-cellulose/polyethyleneimine/reduced graphene oxide composite membrane at 130-250 ℃ in a nitrogen atmosphere for 2-4 h to prepare the composite graphene heat-conducting membrane with a bionic structure.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474897A (en) * | 2009-01-16 | 2009-07-08 | 南开大学 | Grapheme-organic material layered assembling film and preparation method thereof |
| CN105206431A (en) * | 2015-10-12 | 2015-12-30 | 中国林业科学研究院木材工业研究所 | Electrode material preparing method and electrode material prepared through same |
| CN106700110A (en) * | 2017-01-09 | 2017-05-24 | 东北林业大学 | Preparation method of graphene oxide/nano cellulose/polyvinyl alcohol composite film |
| CN106744831A (en) * | 2016-11-24 | 2017-05-31 | 湖北大学 | A kind of reusable redox graphene base photothermal conversion film and its preparation method |
| CN106832725A (en) * | 2016-12-20 | 2017-06-13 | 安徽省阜阳市国泰彩印包装有限公司 | Enhanced degradable plastic sheeting composite of a kind of nano-cellulose and preparation method thereof |
| CN106890605A (en) * | 2017-02-21 | 2017-06-27 | 中国林业科学研究院木材工业研究所 | A kind of three-dimensional grapheme composite aerogel and preparation method thereof |
| CN108129685A (en) * | 2017-12-12 | 2018-06-08 | 上海大学 | MULTILAYER COMPOSITE heat conduction film and preparation method thereof |
| CN108329495A (en) * | 2017-12-20 | 2018-07-27 | 上海交通大学 | Graphene with biomimetic features-Cellulose nanocrystal composite heat-conducting film and its preparation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128768B (en) * | 2017-12-19 | 2020-03-10 | 上海交通大学 | Graphene-carbon quantum dot composite heat-conducting film with bionic laminated structure and preparation method thereof |
-
2019
- 2019-11-04 CN CN201911063955.0A patent/CN110845752B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474897A (en) * | 2009-01-16 | 2009-07-08 | 南开大学 | Grapheme-organic material layered assembling film and preparation method thereof |
| CN105206431A (en) * | 2015-10-12 | 2015-12-30 | 中国林业科学研究院木材工业研究所 | Electrode material preparing method and electrode material prepared through same |
| CN106744831A (en) * | 2016-11-24 | 2017-05-31 | 湖北大学 | A kind of reusable redox graphene base photothermal conversion film and its preparation method |
| CN106832725A (en) * | 2016-12-20 | 2017-06-13 | 安徽省阜阳市国泰彩印包装有限公司 | Enhanced degradable plastic sheeting composite of a kind of nano-cellulose and preparation method thereof |
| CN106700110A (en) * | 2017-01-09 | 2017-05-24 | 东北林业大学 | Preparation method of graphene oxide/nano cellulose/polyvinyl alcohol composite film |
| CN106890605A (en) * | 2017-02-21 | 2017-06-27 | 中国林业科学研究院木材工业研究所 | A kind of three-dimensional grapheme composite aerogel and preparation method thereof |
| CN108129685A (en) * | 2017-12-12 | 2018-06-08 | 上海大学 | MULTILAYER COMPOSITE heat conduction film and preparation method thereof |
| CN108329495A (en) * | 2017-12-20 | 2018-07-27 | 上海交通大学 | Graphene with biomimetic features-Cellulose nanocrystal composite heat-conducting film and its preparation |
Non-Patent Citations (1)
| Title |
|---|
| Highly Anisotropic Thermal Conductivity of Layer-by-Layer Assembled Nanofibrillated Cellulose/Graphene Nanosheets Hybrid Films for Thermal Management;Na Song et al.;《ACS Applied Materials & Interfaces》;20170103;第2924-2932页 * |
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