CN103265013A - Preparation methods of flexible substrate-based graphene film and flexible substrate-based graphene composite film - Google Patents

Preparation methods of flexible substrate-based graphene film and flexible substrate-based graphene composite film Download PDF

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CN103265013A
CN103265013A CN2013101491241A CN201310149124A CN103265013A CN 103265013 A CN103265013 A CN 103265013A CN 2013101491241 A CN2013101491241 A CN 2013101491241A CN 201310149124 A CN201310149124 A CN 201310149124A CN 103265013 A CN103265013 A CN 103265013A
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graphene
paper
film
substrates
graphene oxide
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CN103265013B (en
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王帅
张哲野
杨圣雄
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Weihui Power Technology Co., Ltd.
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Huazhong University of Science and Technology
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Abstract

The invention discloses a preparation method of a flexible substrate-based graphene film. The preparation method comprises the following steps of coating a graphene oxide aqueous solution on a paper base material to obtain a uniform graphene oxide film, carrying out drying curing treatment, coating a polydimethylsiloxane (PDMS) layer on the surface of the graphene oxide film, carrying out curing treatment, and dipping the treated paper base material into hydroiodic acid for a reduction reaction, wherein in the reduction reaction, the treated paper base material undergoes a hydrolysis reaction under the acid conditions and simultaneously, reacts with the acid to produce bubbles so that the graphene oxide film is automatically separated from the paper base material and the flexible substrate-based graphene film product is obtained. The invention also discloses a preparation method of a flexible substrate-based graphene composite film. The methods realize graphene reduction without a high temperature condition or a toxic reduction reagent, conveniently and fast realize film stripping and transfer and are especially suitable for large-scale industrial production.

Description

A kind of preparation method of Graphene and the laminated film thereof based on flexible substrates
Technical field
The invention belongs to the Graphene preparing technical field, more specifically, relate to a kind of preparation method of Graphene and the laminated film thereof based on flexible substrates.
Background technology
In recent years, along with the demand of consumption electronic product increases rapidly, relevant flexible, light portable electron device (as display screen, the wearable electronics etc. of can curling) becomes a research focus.Flexible electronic all has good application prospects at aspects such as wearable display element, artificial skin and distributed sensors.Graphene is that carbon atom is with the tightly packed cellular two-dimensional crystal lattice structural carbon nano material that forms of sp2 hybrid systems, because it has features such as the electrochemical properties of bigger serface, high-mechanical property, excellent electron transport ability and relative inertness and lower cost, thereby is expected to obtain widespread use in a plurality of fields such as flexible electronic, energy storage, electrochemical sensing.
In above-mentioned application, Graphene need and be transferred to the enterprising enforcement of flexible substrates and use usually as form of film.Method for the preparation of graphene film mainly comprises spin-coating method, spraying method, suction method and chemical Vapor deposition process (CVD) etc. at present, wherein spin-coating method is as laboratory working method commonly used, can only prepare the less graphene film of area, and the thickness distribution inequality of obtained film, solution is required also relatively harsher; Spraying method operation steps complexity, preparation cost are higher relatively, are unfavorable for large-scale industrial production; Suction method faces suction filtration time length equally, film size is limited by device, is difficult to problems such as large-area preparation; For chemical Vapor deposition process, though can big area synthesizing graphite alkene film, but must adopt metal catalytic layer and synthesizing graphite alkene film on the metal catalytic substrate, synthesis temperature is generally more than 650, like this during actually operating, must transfer on the flexible substrate at the synthetic big area graphene film of metal substrate, correspondingly cause the inconvenience in the actual production.Therefore, in association area, need badly and seek a kind of more perfect preparation method, in order to can obtain graphene film and other composite prods based on flexible substrates in mode simple, that be convenient to control.
Summary of the invention
Above defective or improvement demand at prior art, the invention provides a kind of preparation method of Graphene and the laminated film thereof based on flexible substrates, wherein by adopting paper substrates as the intermediate carrier of graphene oxide and composite film thereof, when it is immersed in the hydroiodic acid HI, not only can carry out the reduction process of Graphene smoothly, and can also make things convenient for, that realizes rete rapidly peels off to obtain required film product, can break away from this way hot conditions or other poisonous dependences of going back original reagent, and solve the technical problem that graphene film in the prior art and laminated film film thereof are difficult to shift.
According to a first aspect of the present invention, a kind of preparation method of the graphene film based on flexible substrates is provided, it is characterized in that this method comprises the following steps: successively
(a) be that the graphite oxide aqueous solution of 0.1mg/ml~10mg/ml is coated on the surface of paper substrates and forms the rete that one deck evenly covers with mass concentration, carry out baking and curing then and handle, obtain graphene oxide paper thus;
(b) on the graphene oxide film surface of graphene oxide paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(c) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the graphene oxide paper that will be coated with the polydimethylsiloxane layer, in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene rete that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required graphene film product based on the polydimethylsiloxane flexible substrates.
According to a second aspect of the present invention, a kind of preparation method of the Graphene/carbon nano-tube coextruded film based on flexible substrates is provided, it is characterized in that this method comprises the following steps: successively
(i) be to add multi-walled carbon nano-tubes in the graphite oxide aqueous solution of 2mg/ml~8mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~5:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/carbon nano-tube compound film layer thus;
(ii) on the graphene oxide/carbon nano-tube compound film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 45%~55% the hydroiodic acid HI that paper substrates after (iii) will (ii) handling through step is immersed in massfraction, in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/carbon nano-tube compound film layer that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required Graphene based on the polydimethylsiloxane flexible substrates/carbon nano-tube coextruded film product.
According to a third aspect of the present invention, a kind of preparation method of the graphene/polyaniline laminated film based on flexible substrates is provided, it is characterized in that this method comprises the following steps: successively
(A) be to add the polyaniline nano particle in the graphite oxide aqueous solution of 2mg/ml~8mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~4:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/polyaniline composite film layer thus;
(B) on the graphene oxide/polyaniline composite film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(C) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the paper substrates after will handling through step (B), in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the graphene/polyaniline composite film that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required graphene/polyaniline laminated film product based on the polydimethylsiloxane flexible substrates.
According to a fourth aspect of the present invention, the preparation method of a kind of Graphene based on flexible substrates/polypyrrole laminated film is provided, it is characterized in that this method comprises the following steps: successively
(I) be to add the polypyrrole nano particle in the graphite oxide aqueous solution of 3mg/ml~6mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~4:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/composite polypyrrole film layer thus;
(II) on the graphene oxide/composite polypyrrole film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(III) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the paper substrates after will handling through step (II), in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/composite polypyrrole film layer that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required Graphene based on the polydimethylsiloxane flexible substrates/polypyrrole laminated film product.
As further preferably, described paper substrates is selected from printer paper, plotting paper, kraft paper, water writing paper, blotting paper or enamelled paper or other analogous materials.
As further preferably, adopt stainless steel bar or coating roll to make on the whole surface of paper substrates and form graphene oxide rete or its composite film that evenly covers.
In general, the above technical scheme of conceiving by the present invention compared with prior art mainly possesses following technological merit:
1, by adopting paper substrates as the intermediate carrier of graphene oxide and composite film thereof, when it is in sour environment following time, hydrolysis reaction makes that the degree of crystallinity of paper fiber is destroyed on the one hand, the polymerization degree and intensity lower, its additive that contains can generate many small bubbles with acid-respons on the other hand, these small bubbles act on the interface between paper substrates and the Graphene/Graphene composite film, impel rete to peel off and can not cause damage to it; Can realize peeling off and shifting of rete fast, expediently in this way, and can operate at normal temperatures;
2, by adopting hydroiodic acid HI as the reducing substance of graphene oxide, can break away from hot conditions or poisonous dependence of going back original reagent in the prior art, help the generation of large area film product, in addition, can also solve the technical problem that graphene film in the prior art and laminated film film thereof are difficult to shift well;
3, not only can realize preparation based on graphene film and other all kinds of Graphene laminated films of flexible substrates at normal temperatures according to preparation method of the present invention, and simple to operate, be convenient to control, cost is low, environmentally safe, prepared film product possesses good flexibility and planeness, thereby is particularly useful for large batch of suitability for industrialized production purposes.
Description of drawings
Fig. 1 is the section SEM figure according to the prepared graphene film of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.In addition, below in each embodiment of described the present invention involved technical characterictic just can not make up mutually as long as constitute conflict each other.
Embodiment 1
Be that the graphite oxide aqueous solution of 0.1mg/ml is poured over such as on the commercial printer paper of A4 specification with the 300ml mass concentration, employing stainless steel bar rolling method flows it and forms the rete that one deck evenly covers on the whole surface of plotting paper, carry out baking and curing then and handle, obtain graphene oxide paper thus;
On the graphene oxide film surface of graphene oxide paper, adopt stainless steel bar that polydimethylsiloxane (PDMS) liquid is given roller coating equally and cover, obtain the PDMS layer thus, and it is carried out solidification treatment under the 80-90 degree;
It is to carry out reduction reaction in 45% the hydroiodic acid HI that the graphene oxide paper that at room temperature will be coated with the polydimethylsiloxane layer is immersed in massfraction, in this reduction process, printer paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene rete that combines with the polydimethylsiloxane layer to break away from printer paper automatically thus, and obtain the required graphene film product based on the polydimethylsiloxane flexible substrates.
Embodiment 2
Be that the graphite oxide aqueous solution of 10mg/ml is poured over such as on the commercial printer paper of A4 specification with the 300ml mass concentration, employing stainless steel bar rolling method flows it and forms the rete that one deck evenly covers on the whole surface of plotting paper, carry out baking and curing then and handle, obtain graphene oxide paper thus;
On the graphene oxide film surface of graphene oxide paper, adopt stainless steel bar that polydimethylsiloxane (PDMS) liquid is given roller coating equally and cover, obtain the PDMS layer thus, and it is carried out solidification treatment under the 80-90 degree;
It is to carry out reduction reaction in 50% the hydroiodic acid HI that the graphene oxide paper that at room temperature will be coated with the polydimethylsiloxane layer is immersed in massfraction, in this reduction process, printer paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene rete that combines with the polydimethylsiloxane layer to break away from printer paper automatically thus, and obtain the required graphene film product based on the polydimethylsiloxane flexible substrates.
Embodiment 3
Be to add the 50mg multi-walled carbon nano-tubes and carry out ultra-sonic dispersion in the graphite oxide aqueous solution of 2mg/ml to obtain mixed solution after 2 hours to the 40ml mass concentration, the specification that this mixed solution is coated tiling by coating roll is on the kraft paper of 40cm*40cm, and at the composite film that its whole surface formation one deck evenly covers, carry out baking and curing then and handle;
On the graphene oxide/carbon nano-tube compound film laminar surface of this kraft paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 55% the hydroiodic acid HI that the kraft paper that carries graphene oxide/carbon nano-tube compound film layer and polydimethylsiloxane layer is immersed in massfraction, in this reduction process, kraft paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/carbon nano-tube compound film layer that combines with the PDMS layer to break away from kraft paper automatically thus, and obtain the required Graphene based on PDMS/carbon nano-tube coextruded film product.
Embodiment 4
Be to add the 100mg multi-walled carbon nano-tubes and carry out ultra-sonic dispersion in the graphite oxide aqueous solution of 5mg/ml to obtain mixed solution after 2 hours to the 40ml mass concentration, the specification that this mixed solution is coated tiling by coating roll is on the kraft paper of 40cm*40cm, and at the composite film that its whole surface formation one deck evenly covers, carry out baking and curing then and handle;
On the graphene oxide/carbon nano-tube compound film laminar surface of this kraft paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 45% the hydroiodic acid HI that the kraft paper that at room temperature will carry graphene oxide/carbon nano-tube compound film layer and PDMS layer is immersed in massfraction, in this reduction process, kraft paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/carbon nano-tube compound film layer that combines with the PDMS layer to break away from kraft paper automatically thus, and obtain the required Graphene based on PDMS/carbon nano-tube coextruded film product.
Embodiment 5
With the Ammonium Persulfate 98.5 of the aniline solution of 0.3ml and 0.18g be dissolved in 10ml respectively, volumetric molar concentration is in the hydrochloric acid of 1mol/L, vibration is 30 seconds after the short mix, standing and reacting is 2 hours under the room temperature, namely obtains polyaniline nano fiber; Be to add the prepared polyaniline nano fiber of 100mg in the graphite oxide aqueous solution of 5mg/ml to the 40ml mass concentration, and the execution ultra-sonic dispersion obtains mixed solution, this mixed solution is coated by coating roll on the A4 printer paper of tiling and on its whole surface and formed the composite film that one deck evenly covers, carry out baking and curing then and handle;
On the graphene oxide/polyaniline composite film laminar surface of this printer paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 55% the hydroiodic acid HI that the printer paper that at room temperature will carry graphene oxide/polyaniline composite film layer and PDMS layer is immersed in massfraction, in this reduction process, printer paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the graphene/polyaniline composite film that combines with the PDMS layer to break away from printer paper automatically thus, and obtain the required graphene/polyaniline laminated film product based on PDMS.
Embodiment 6
With the Ammonium Persulfate 98.5 of the aniline solution of 0.3ml and 0.18g be dissolved in 10ml respectively, volumetric molar concentration is in the hydrochloric acid of 1mol/L, vibration is 30 seconds after the short mix, standing and reacting is 2 hours under the room temperature, namely obtains polyaniline nano fiber; Be to add the prepared polyaniline nano fiber of 100mg in the graphite oxide aqueous solution of 3mg/ml to the 40ml mass concentration, and the execution ultra-sonic dispersion obtains mixed solution, this mixed solution is coated on the A4 printer paper of tiling and on its whole surface and formed the composite film that one deck evenly covers, carry out baking and curing then and handle;
On the graphene oxide/polyaniline composite film laminar surface of this printer paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 45% the hydroiodic acid HI that the printer paper that at room temperature will carry graphene oxide/polyaniline composite film layer and PDMS layer is immersed in massfraction, in this reduction process, printer paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the graphene/polyaniline composite film that combines with the PDMS layer to break away from printer paper automatically thus, and obtain the required graphene/polyaniline laminated film product based on PDMS.
Embodiment 7
Be to add the polypyrrole nano particle and carry out ultra-sonic dispersion in the graphite oxide aqueous solution of 3mg/ml to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and polypyrrole nano particle is 2:1, the specification that this mixed solution is coated tiling is to form the composite film that one deck evenly covers on the enamelled paper of 30cm*30cm and on its whole surface, carries out baking and curing then and handles;
On the graphene oxide/composite polypyrrole film laminar surface of this enamelled paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 50% the hydroiodic acid HI that the enamelled paper that carries graphene oxide/composite polypyrrole film layer and PDMS layer is immersed in massfraction, in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/composite polypyrrole film layer that combines with the PDMS layer to break away from paper substrates automatically thus, and obtain required Graphene based on PDMS/polypyrrole laminated film product.
Embodiment 8
Be to add the polypyrrole nano particle and carry out ultra-sonic dispersion in the graphite oxide aqueous solution of 6mg/ml to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and polypyrrole nano particle is 4:1, the specification that this mixed solution is coated tiling is to form the composite film that one deck evenly covers on the enamelled paper of 30cm*30cm and on its whole surface, carries out baking and curing then and handles;
On the graphene oxide/composite polypyrrole film laminar surface of this enamelled paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 45% the hydroiodic acid HI that the enamelled paper that carries graphene oxide/composite polypyrrole film layer and PDMS layer is immersed in massfraction, in this reduction process, enamelled paper generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/composite polypyrrole film layer that combines with PDMS to break away from enamelled paper automatically thus, and obtain required Graphene based on PDMS/polypyrrole laminated film product.
Those skilled in the art will readily understand; the above only is preferred embodiment of the present invention; not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. the preparation method based on the graphene film of flexible substrates is characterized in that, this method comprises the following steps: successively
(a) be that the graphite oxide aqueous solution of 0.1mg/ml~10mg/ml is coated on the surface of paper substrates and forms the rete that one deck evenly covers with mass concentration, carry out baking and curing then and handle, obtain graphene oxide paper thus;
(b) on the graphene oxide film surface of graphene oxide paper, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(c) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the graphene oxide paper that will be coated with the polydimethylsiloxane layer, in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene rete that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required graphene film product based on the polydimethylsiloxane flexible substrates.
2. the preparation method based on the Graphene/carbon nano-tube coextruded film of flexible substrates is characterized in that, this method comprises the following steps: successively
(i) be to add multi-walled carbon nano-tubes in the graphite oxide aqueous solution of 2mg/ml~8mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~5:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/carbon nano-tube compound film layer thus;
(ii) on the graphene oxide/carbon nano-tube compound film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
It is to carry out reduction reaction in 45%~55% the hydroiodic acid HI that paper substrates after (iii) will (ii) handling through step is immersed in massfraction, in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/carbon nano-tube compound film layer that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required Graphene based on the polydimethylsiloxane flexible substrates/carbon nano-tube coextruded film product.
3. the preparation method based on the graphene/polyaniline laminated film of flexible substrates is characterized in that this method comprises the following steps: successively
(A) be to add the polyaniline nano particle in the graphite oxide aqueous solution of 2mg/ml~8mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~4:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/polyaniline composite film layer thus;
(B) on the graphene oxide/polyaniline composite film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(C) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the paper substrates after will handling through step (B), in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the graphene/polyaniline composite film that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required graphene/polyaniline laminated film product based on the polydimethylsiloxane flexible substrates.
4. the preparation method of the Graphene based on flexible substrates/polypyrrole laminated film is characterized in that this method comprises the following steps: successively
(I) be to add the polypyrrole nano particle in the graphite oxide aqueous solution of 3mg/ml~6mg/ml and carry out ultra-sonic dispersion to obtain mixed solution to mass concentration, wherein the quality proportioning of graphene oxide and multi-walled carbon nano-tubes is 2:1~4:1, this mixed solution is coated on the surface of paper substrates and forms the composite film that one deck evenly covers, carry out baking and curing then and handle, obtain to carry the paper substrates of graphene oxide/composite polypyrrole film layer thus;
(II) on the graphene oxide/composite polypyrrole film laminar surface of this paper substrates, apply one deck polydimethylsiloxane layer again, and it is carried out solidification treatment;
(III) to be immersed in massfraction be to carry out reduction reaction in 45%~55% the hydroiodic acid HI to the paper substrates after will handling through step (II), in this reduction process, paper substrates generation hydrolysis generates bubble with the hydroiodic acid HI reaction simultaneously, impel the Graphene/composite polypyrrole film layer that combines with the polydimethylsiloxane layer to break away from paper substrates automatically thus, and obtain the required Graphene based on the polydimethylsiloxane flexible substrates/polypyrrole laminated film product.
5. as any described method of claim 1-4, it is characterized in that described paper substrates is selected from printer paper, plotting paper, kraft paper, water writing paper, blotting paper or enamelled paper or other analogous materials.
6. as any described method of claim 1-5, it is characterized in that, adopt stainless steel bar or coating roll to make on the whole surface of paper substrates and form graphene oxide rete or its composite film that evenly covers.
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