CN114200728B - Preparation method of dynamic infrared thermal radiation regulation fiber function device - Google Patents
Preparation method of dynamic infrared thermal radiation regulation fiber function device Download PDFInfo
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- CN114200728B CN114200728B CN202210071310.7A CN202210071310A CN114200728B CN 114200728 B CN114200728 B CN 114200728B CN 202210071310 A CN202210071310 A CN 202210071310A CN 114200728 B CN114200728 B CN 114200728B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
- G02F1/1516—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
- G02F1/15165—Polymers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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Abstract
A preparation method of a dynamic infrared thermal radiation regulation fiber functional device relates to a preparation method of a functional device. The invention aims to solve the problem that the traditional planar infrared heat radiator cannot be well combined with textiles to realize intelligent wearing capacity. The method comprises the following steps: 1. preparing a multiphase polymer dispersion solution; 2. preparing a porous electrolyte separator layer; 3. preparing a working electrode; 4. preparing an electrochromic film layer; 5. and introducing electrolyte liquid into the carbon fiber to obtain the dynamic infrared thermal radiation regulating fiber function device. The dynamic infrared thermal radiation regulation fiber function device prepared by the invention has good infrared emissivity control capability, has visible light management capability, has infrared emissivity delta epsilon of 0.4 in a wave band of 8-14 mu m, can realize reversible color conversion in a visible light wave band, and has quick reaction time. The invention can obtain a dynamic infrared thermal radiation regulation fiber function device.
Description
Technical Field
The invention relates to a preparation method of a functional device.
Background
As infrared thermal radiation modulation techniques are widely used in personal thermal management, various electronic instruments, adaptive thermal camouflage, and intelligent spacecraft thermal regulation, devices with effective infrared modulation capabilities are becoming increasingly important. Electrochromic devices of planar structure are currently being widely studied and developed deeply. However, planar electrochromic devices cannot be perfectly integrated with textiles, and cannot meet the requirements of wearing comfort. In recent years, with the development of intelligent wearable electronic products and the rising of intelligent clothing concepts, multicolor fibers are widely applied in daily life, including air permeability, moisture permeability, mechanical stretchability based on fiber structures, and abundant color camouflage safety warning and anti-counterfeiting performance. In this respect, the development of an intelligent fiber with high infrared heat radiation control capability is needed to be solved by combining the infrared heat radiation control technology with the intelligent fiber.
Disclosure of Invention
The invention provides a preparation method of a dynamic infrared heat radiation regulation fiber function device, which aims to solve the problem that the traditional planar infrared heat radiator device cannot be well combined with textiles to realize intelligent wearing capacity.
The preparation method of the dynamic infrared thermal radiation regulation fiber function device is completed according to the following steps:
1. preparing a multiphase polymer dispersion solution:
firstly, adding a polymer into a solvent, heating the solvent under stirring until the polymer is completely dissolved, adding polymethyl methacrylate, and heating the solvent under magnetic stirring until the polymethyl methacrylate is completely dissolved to obtain a uniform multiphase polymer dispersion solution;
2. preparing a porous electrolyte separator layer:
(1) immersing the carbon fiber into the uniform multiphase polymer dispersion solution to obtain a carbon fiber/multiphase polymer dispersion solution;
(2) adding the carbon fiber/multiphase polymer dispersion solution into a solvent, standing, taking out the carbon fiber, and drying to obtain a porous electrolyte membrane layer;
3. preparing a working electrode:
attaching a metal layer on the porous electrolyte membrane layer by adopting a vacuum thermal evaporation method to obtain a carbon fiber-porous electrolyte membrane layer-metal layer;
4. preparing an electrochromic film layer:
(1) washing the carbon fiber-porous electrolyte membrane layer-metal layer by using absolute ethyl alcohol, and then placing the washed carbon fiber-porous electrolyte membrane layer-metal layer into an oven for heat treatment to obtain the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment;
(2) preparing an electrochromic film layer on the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment by an electroplating method or an in-situ chemical synthesis method to obtain the carbon fiber-porous electrolyte membrane layer-metal layer-electrochromic film layer;
the electroplating method in the step four (2) is specifically completed according to the following steps:
acid-doped polyaniline is used as electrolyte, a platinum sheet is used as a counter electrode, ag/AgCl is used as a reference electrode, a carbon fiber-porous electrolyte membrane layer-metal layer is used as a working electrode, and polyaniline is electroplated on the metal layer on the carbon fiber-porous electrolyte membrane layer-metal layer under a three-electrode system by adopting a transverse current method or a constant potential method through an electrochemical workstation to obtain a carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer;
5. distilled water is used for flushing the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer, then the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer is placed in a vacuum compressor for compression, and electrolyte liquid is introduced into the carbon fiber under the action of pressure, so that a dynamic infrared heat radiation regulation fiber function device is obtained.
The principle of the invention is as follows:
coating an electrolyte layer on the fiber substrate, then plating a metal layer with high reflectivity on the electrolyte layer, and electroplating an electrochromic layer on the metal layer. Thus, the electrochromic device with the planar sandwich structure is converted into the electrochromic device with the fibrous nested structure. By applying different voltages, the adjustment of the spectral characteristics of the electrochromic layer in the visible-infrared band can be realized, and the adjustment of the color and infrared emissivity of the fiber device can be further realized.
The invention has the advantages that:
1. the dynamic infrared thermal radiation regulation fiber function device prepared by the invention has good infrared emissivity control capability, has visible light management capability, has infrared emissivity delta epsilon of 0.4 in a wave band of 8-14 mu m, can realize reversible color conversion in a visible light wave band, and has quick reaction time; in general, the invention can adjust the reflectivity and absorptivity of visible light and near infrared wave bands through parameters, thereby achieving the purposes of high emissivity change and low solar absorption ratio, and further achieving the purpose of high-efficiency dynamic thermal regulation;
2. the preparation method is simple to operate and low in cost, and can be used for mass preparation;
3. the dynamic infrared thermal radiation regulation fiber function device prepared by the invention can be perfectly fused with textiles through different weaving technologies so as to realize intelligent wearing.
The invention can obtain a dynamic infrared thermal radiation regulation fiber function device.
Drawings
FIG. 1 is an SEM image of a dynamic infrared thermal radiation regulating fiber function device prepared in step five of example 1;
FIG. 2 is a digital photograph of the oxidized state and the reduced state of the dynamic IR heat radiation control fiber function device prepared in step five of example 1, wherein the upper part is oxidized state and the lower part is reduced state;
FIG. 3 is a graph showing the variation of the infrared emissivity of the dynamic IR heat radiation control fiber function device prepared in step five of example 1;
fig. 4 is a fatigue resistance test chart of the dynamic infrared thermal radiation regulating fiber function device prepared in the step five of example 1, wherein the number of cycles of 1 is 0 and the number of cycles of 2 is 500.
Detailed Description
The following examples further illustrate the invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the present invention without departing from the spirit of the invention are intended to be within the scope of the present invention.
The first embodiment is as follows: the preparation method of the dynamic infrared heat radiation regulation fiber function device in the embodiment is completed according to the following steps:
1. preparing a multiphase polymer dispersion solution:
firstly, adding a polymer into a solvent, heating the solvent under stirring until the polymer is completely dissolved, adding polymethyl methacrylate, and heating the solvent under magnetic stirring until the polymethyl methacrylate is completely dissolved to obtain a uniform multiphase polymer dispersion solution;
2. preparing a porous electrolyte separator layer:
(1) immersing the carbon fiber into the uniform multiphase polymer dispersion solution to obtain a carbon fiber/multiphase polymer dispersion solution;
(2) adding the carbon fiber/multiphase polymer dispersion solution into a solvent, standing, taking out the carbon fiber, and drying to obtain a porous electrolyte membrane layer;
3. preparing a working electrode:
attaching a metal layer on the porous electrolyte membrane layer by adopting a vacuum thermal evaporation method to obtain a carbon fiber-porous electrolyte membrane layer-metal layer;
4. preparing an electrochromic film layer:
(1) washing the carbon fiber-porous electrolyte membrane layer-metal layer by using absolute ethyl alcohol, and then placing the washed carbon fiber-porous electrolyte membrane layer-metal layer into an oven for heat treatment to obtain the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment;
(2) preparing an electrochromic film layer on the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment by an electroplating method or an in-situ chemical synthesis method to obtain the carbon fiber-porous electrolyte membrane layer-metal layer-electrochromic film layer;
the electroplating method in the step four (2) is specifically completed according to the following steps:
acid-doped polyaniline is used as electrolyte, a platinum sheet is used as a counter electrode, ag/AgCl is used as a reference electrode, a carbon fiber-porous electrolyte membrane layer-metal layer is used as a working electrode, and polyaniline is electroplated on the metal layer on the carbon fiber-porous electrolyte membrane layer-metal layer under a three-electrode system by adopting a transverse current method or a constant potential method through an electrochemical workstation to obtain a carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer;
5. distilled water is used for flushing the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer, then the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer is placed in a vacuum compressor for compression, and electrolyte liquid is introduced into the carbon fiber under the action of pressure, so that a dynamic infrared heat radiation regulation fiber function device is obtained.
The second embodiment is as follows: the present embodiment differs from the specific embodiment in that: the polymer in the first step is one or a mixture of more of polyvinyl alcohol, polyvinylidene fluoride-polymethyl methacrylate and vinylidene fluoride-hexafluoropropylene copolymer; the solvent in the first step is sulfuric acid solution or N, N-dimethylformamide with the mass fraction of 95-98%. The other steps are the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: the mass ratio of the polymer, the solvent and the polymethyl methacrylate in the multiphase polymer dispersion solution in the first step is 1:6:0.05; the stirring speed in the first step is 100 r/min-1000 r/min; the heating temperature in the first step is 60-80 ℃. The other steps are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: one difference between this embodiment and the first to third embodiments is that: the solvent in the second step (2) is ethanol, acetone or water; and (3) standing for 10-30 min in the second step (2). The other steps are the same as those of the first to third embodiments.
Fifth embodiment: one to four differences between the present embodiment and the specific embodiment are: the drying temperature in the step two (2) is 60-80 ℃, and the drying time is 3-5 h; the volume ratio of the carbon fiber/multiphase polymer dispersion solution to the solvent in the step two (2) is (1-2), namely (1-50). Other steps are the same as those of the first to fourth embodiments.
Specific embodiment six: the present embodiment differs from the first to fifth embodiments in that: the metal layer in the third step is one or a mixture of more of platinum, gold, copper and stainless steel; the thickness of the metal layer in the third step is 100 nm-300 nm. Other steps are the same as those of the first to fifth embodiments.
Seventh embodiment: one difference between the present embodiment and the first to sixth embodiments is that: the number of times of flushing in the step four (1) is 2 to 3 times; the temperature of the heat treatment in the step four (1) is 80-120 ℃, and the time of the heat treatment is 3-8 h. Other steps are the same as those of embodiments one to six.
Eighth embodiment: one difference between the present embodiment and the first to seventh embodiments is that: the preparation method of the acid-doped polyaniline comprises the following steps: adding acid into aniline, mixing uniformly, wherein the mass ratio of the acid to the aniline is (30-60): 1, and obtaining acid-doped polyaniline; wherein the acid is one or more of sulfuric acid, camphorsulfonic acid, dodecylbenzene sulfonic acid, hydrofluoric acid and hydrochloric acid; the constant current method adopts the current of 0.1-0.3 mA/s and the electroplating time of 4000-10000 s; the constant voltage method adopts the voltage of 0.75V-0.85V and the electroplating time of 5000-8000 s. The other steps are the same as those of embodiments one to seven.
Detailed description nine: one of the differences between this embodiment and the first to eighth embodiments is: the electrolyte liquid in the fifth step is obtained by dissolving lithium salt into a plasticizer; the flushing time in the fifth step is 1 min-5 min; the pressure of the vacuum compressor in the fifth step is 10-50 bar; the number of times of compression in the fifth step is 3-5, and the time of each compression is 1-5 min. Other steps are the same as those of embodiments one to eight.
Detailed description ten: the present embodiment differs from the first to ninth embodiments in that: the lithium salt in the fifth step is one or a mixture of more of lithium hexafluorophosphate, lithium perchlorate, lithium tetrafluoroborate, lithium bisoxalato borate, lithium bis (trifluoromethylsulfonyl) imide and lithium bisfluorosulfonyl imide; the plasticizer is propylene carbonate; the concentration of lithium salt in the electrolyte liquid is 1-3 mol/L; the mass fraction of the plasticizer is 95-98%. The other steps are the same as those of embodiments one to nine.
The present invention will be described in detail with reference to the accompanying drawings and examples.
The following examples are used to verify the benefits of the present invention:
example 1: the preparation method of the dynamic infrared thermal radiation regulation fiber function device is completed according to the following steps:
1. preparing a multiphase polymer dispersion solution:
firstly, adding polyvinylidene fluoride-polymethyl methacrylate into N, N-dimethylformamide, heating under stirring until the polyvinylidene fluoride-polymethyl methacrylate is completely dissolved, adding polymethyl methacrylate, and heating under magnetic stirring at 1000r/min and a heating temperature of 70 ℃ until the polymethyl methacrylate is completely dissolved to obtain a uniform multiphase polymer dispersion solution;
the mass ratio of the polyvinylidene fluoride to the polymethyl methacrylate to the N, N-dimethylformamide to the polymethyl methacrylate in the first step is 1:6:0.05;
2. preparing a porous electrolyte separator layer:
(1) immersing the carbon fiber into the uniform multiphase polymer dispersion solution to obtain a carbon fiber/multiphase polymer dispersion solution;
(2) adding the carbon fiber/multiphase polymer dispersion solution into absolute ethyl alcohol, standing for 30min, taking out the carbon fiber, and drying for 4h at 70 ℃ to obtain a porous electrolyte membrane layer;
the volume ratio of the carbon fiber/multiphase polymer dispersion solution to the absolute ethyl alcohol in the step two (2) is 1:25;
3. preparing a working electrode:
attaching a gold layer on the porous electrolyte membrane layer by adopting a vacuum thermal evaporation method to obtain a carbon fiber-porous electrolyte membrane layer-gold layer;
the thickness of the gold layer in the third step is 200nm;
4. preparing an electrochromic film layer:
(1) washing the carbon fiber-porous electrolyte membrane layer-gold layer for 3 times by using absolute ethyl alcohol, and then placing the carbon fiber-porous electrolyte membrane layer-gold layer into a baking oven with the temperature of 100 ℃ for heat treatment for 5 hours to obtain the carbon fiber-porous electrolyte membrane layer-gold layer after heat treatment;
(2) preparing an electrochromic film layer on the carbon fiber-porous electrolyte membrane layer-gold layer after heat treatment by an electroplating method to obtain the carbon fiber-porous electrolyte membrane layer-gold layer-electrochromic film layer;
the electroplating method in the step four (2) is specifically completed according to the following steps:
acid-doped polyaniline is used as electrolyte, a platinum sheet is used as a counter electrode, ag/AgCl is used as a reference electrode, a carbon fiber-porous electrolyte membrane layer-gold layer is used as a working electrode, and polyaniline is electroplated on the gold layer on the carbon fiber-porous electrolyte membrane layer-gold layer under a three-electrode system by adopting a transverse current method through an electrochemical workstation, so that a carbon fiber-porous electrolyte membrane layer-gold layer-polyaniline layer is obtained; the preparation method of the acid-doped polyaniline comprises the following steps: adding acid into aniline, uniformly mixing, wherein the mass ratio of the acid to the aniline is 40:1, and obtaining acid-doped polyaniline; wherein the acid is sulfuric acid with the mass fraction of 98%; the constant current method adopts the current of 0.2mA/s and the electroplating time of 6000s;
5. washing the carbon fiber-porous electrolyte membrane layer-gold layer-polyaniline layer by using distilled water, then placing the carbon fiber-porous electrolyte membrane layer-gold layer-polyaniline layer in a vacuum compressor for compression, and introducing electrolyte liquid into the carbon fiber through a porous channel under the action of pressure to obtain a dynamic infrared heat radiation regulation fiber function device;
the electrolyte liquid in the fifth step is obtained by dissolving lithium salt into a plasticizer; the lithium salt is lithium hexafluorophosphate; the plasticizer is propylene carbonate; the concentration of lithium salt in the electrolyte liquid is 2mol/L; the mass fraction of the plasticizer is 98%;
the flushing time in the fifth step is 5min;
the pressure of the vacuum compressor in the fifth step is 30bar;
the number of times of compression in the fifth step is 5, and the time of each compression is 3min.
FIG. 1 is an SEM image of a dynamic infrared thermal radiation regulating fiber function device prepared in step five of example 1;
as can be seen from fig. 1: polyaniline has a remarkable bulk polymerization structure, and polyaniline is densely attached to the gold film.
FIG. 2 is a digital photograph of the oxidized state and the reduced state of the dynamic IR heat radiation control fiber function device prepared in step five of example 1, wherein the upper part is oxidized state and the lower part is reduced state;
as can be seen from fig. 2, the dynamic infrared thermal radiation regulating fiber function device can be reversibly switched between an oxidized state (corresponding to green) and a reduced state (yellow).
FIG. 3 is a graph showing the variation of the infrared emissivity of the dynamic IR heat radiation control fiber function device prepared in step five of example 1;
as can be seen from fig. 3, the dynamic infrared thermal radiation regulating fiber function device has excellent infrared emissivity regulating capability, and the average value of the infrared emissivity difference is 0.4.
FIG. 4 is a graph of fatigue resistance test of the dynamic IR heat radiation control fiber function device prepared in step five of example 1, wherein the number of cycles of 1 is 0 and the number of cycles of 2 is 500;
as can be seen from fig. 4, the dynamic infrared heat radiation control fiber function device has good fatigue resistance, and the response time for switching from the reduced state to the oxidized state after 500 times bending is not greatly changed.
Claims (1)
1. A preparation method of a dynamic infrared heat radiation regulation fiber function device is characterized in that the preparation method of the dynamic infrared heat radiation regulation fiber function device is completed according to the following steps:
1. preparing a multiphase polymer dispersion solution:
firstly, adding a polymer into a solvent, heating the solvent under stirring until the polymer is completely dissolved, adding polymethyl methacrylate, and heating the solvent under magnetic stirring until the polymethyl methacrylate is completely dissolved to obtain a uniform multiphase polymer dispersion solution;
the polymer in the first step is one or a mixture of more of polyvinyl alcohol, polyvinylidene fluoride-polymethyl methacrylate and vinylidene fluoride-hexafluoropropylene copolymer;
the solvent in the first step is sulfuric acid solution or N, N-dimethylformamide with the mass fraction of 95% -98%;
the mass ratio of the polymer to the solvent to the polymethyl methacrylate in the first step is 1:6:0.05;
the stirring speed in the first step is 100 r/min-1000 r/min;
the heating temperature in the first step is 60-80 ℃;
2. preparing a porous electrolyte separator layer:
(1) immersing the carbon fiber into the uniform multiphase polymer dispersion solution to obtain a carbon fiber/multiphase polymer dispersion solution;
(2) adding the carbon fiber/multiphase polymer dispersion solution into a solvent, standing, taking out the carbon fiber, and drying to obtain a porous electrolyte membrane layer;
the solvent in the second step (2) is ethanol, acetone or water;
the standing time in the second step (2) is 10-30 min;
the drying temperature in the second step (2) is 60-80 ℃ and the drying time is 3-5 h;
the volume ratio of the carbon fiber/multiphase polymer dispersion solution to the solvent in the second step (2) is (1-2) (1-50);
3. preparing a working electrode:
attaching a metal layer on the porous electrolyte membrane layer by adopting a vacuum thermal evaporation method to obtain a carbon fiber-porous electrolyte membrane layer-metal layer;
the metal layer in the third step is one or a mixture of more of platinum, gold, copper and stainless steel;
the thickness of the metal layer in the third step is 100 nm-300 nm;
4. preparing an electrochromic film layer:
(1) washing the carbon fiber-porous electrolyte membrane layer-metal layer by using absolute ethyl alcohol, and then placing the washed carbon fiber-porous electrolyte membrane layer-metal layer into an oven for heat treatment to obtain the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment;
the flushing times in the step four (1) are 2-3 times;
the temperature of the heat treatment in the step four (1) is 80-120 ℃, and the time of the heat treatment is 3-8 hours;
(2) preparing an electrochromic film layer on the carbon fiber-porous electrolyte membrane layer-metal layer after heat treatment by an electroplating method or an in-situ chemical synthesis method to obtain the carbon fiber-porous electrolyte membrane layer-metal layer-electrochromic film layer;
the electroplating method in the step four (2) is specifically completed according to the following steps:
acid-doped polyaniline is used as electrolyte, a platinum sheet is used as a counter electrode, ag/AgCl is used as a reference electrode, a carbon fiber-porous electrolyte membrane layer-metal layer is used as a working electrode, and polyaniline is electroplated on the metal layer on the carbon fiber-porous electrolyte membrane layer-metal layer under a three-electrode system by adopting a transverse current method or a constant potential method through an electrochemical workstation to obtain a carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer;
the preparation method of the acid-doped polyaniline comprises the following steps: adding acid into aniline, uniformly mixing, wherein the mass ratio of the acid to the aniline is (30-60): 1, and obtaining acid-doped polyaniline; wherein the acid is one or more of sulfuric acid, camphorsulfonic acid, dodecylbenzene sulfonic acid, hydrofluoric acid and hydrochloric acid; the constant current method adopts the current of 0.1-0.3 mA/s and the electroplating time of 4000-10000 s; the constant voltage method adopts the voltage of 0.75V-0.85V and the electroplating time of 5000-8000 s;
5. washing the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer by using distilled water, then placing the carbon fiber-porous electrolyte membrane layer-metal layer-polyaniline layer in a vacuum compressor for compression, and introducing electrolyte liquid into the carbon fiber under the action of pressure to obtain a dynamic infrared heat radiation regulation fiber function device;
the electrolyte liquid in the fifth step is obtained by dissolving lithium salt into a plasticizer; the flushing time in the fifth step is 1 min-5 min; the pressure of the vacuum compressor in the fifth step is 10-50 bar; the number of times of compression in the fifth step is 3-5, and the time of each compression is 1-5 min;
the lithium salt in the fifth step is one or a mixture of more of lithium hexafluorophosphate, lithium perchlorate, lithium tetrafluoroborate, lithium bisoxalato borate, lithium bis (trifluoromethylsulfonyl) imide and lithium bisfluorosulfonyl imide; the plasticizer is propylene carbonate; the concentration of lithium salt in the electrolyte liquid is 1-3 mol/L; the mass fraction of the plasticizer is 95-98%.
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| CN115652612B (en) * | 2022-11-14 | 2024-02-09 | 武汉纺织大学 | Electrochromic fiber and preparation method thereof |
| CN115772717A (en) * | 2022-12-19 | 2023-03-10 | 东南大学 | Electrochromic filament fiber with skin-core structure, preparation method thereof and fabric |
| CN117170153B (en) * | 2023-05-22 | 2024-04-30 | 哈尔滨工业大学 | Preparation method of vine winding electro-spectral regulation fiber device |
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| CN114200728A (en) | 2022-03-18 |
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