CN108611792A - A kind of stretchable conductive material and application thereof based on Modal knitted fabric - Google Patents
A kind of stretchable conductive material and application thereof based on Modal knitted fabric Download PDFInfo
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- CN108611792A CN108611792A CN201611131290.9A CN201611131290A CN108611792A CN 108611792 A CN108611792 A CN 108611792A CN 201611131290 A CN201611131290 A CN 201611131290A CN 108611792 A CN108611792 A CN 108611792A
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- stretchable
- knitted fabric
- conductive material
- carbonization
- modal
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/04—Carbonising or oxidising
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using knitted fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/10—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with styrene-butadiene copolymerisation products or other synthetic rubbers or elastomers except polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/04—Vegetal fibres
- D06N2201/042—Cellulose fibres, e.g. cotton
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/04—Properties of the materials having electrical or magnetic properties
- D06N2209/041—Conductive
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/16—Physical properties antistatic; conductive
Abstract
The invention discloses a kind of stretchable conductive materials based on carbonization Modal knitted fabric, which is characterized in that the carbonization knitted fabric is obtained by carrying out high temperature cabonization processing to starting knitted fabric.The carbonization Modal knitted fabric keeps its knitted structure after high temperature cabonization processing, and with flexible, tensility and electric conductivity, can be directly used as stretchable conductive material or compound rear as stretchable conductive material with other substances.The stretchable conductive material has the features such as good conductivity, tensility are good, environmentally protective, preparation is easy, low cost, has broad application prospects.
Description
Technical field
The present invention relates to wearable electronic device arts, and in particular to a kind of stretchable conductor based on knitted fabric
And its preparation process and purposes.
Background technology
In recent years, wearable electronic device development is quick, and great demand is proposed to stretchable conductive material.Stretchable conduction
Material refers in the conductive material for bearing different mechanically deforms and remain to keep its high conductivity.That reports at present stretchable leads
Electric material is mainly by with intrinsic flexible, electric conductivity nano material such as conducting polymer materials, metal nano material, carbon nanometer
Material is constituted.It is compared with carbon nanomaterial, conducting polymer and metal nano material are respectively present poorly conductive, chemical stabilization
Property difference problem relate generally to three kinds so carbon material is widely studied for stretchable conductive material and prepare strategy：1. will
Conductive material is scattered in elastic polymer matrix；2. forming the conduction with wave or buckling structure in elastomeric polymer primary surface
Material；3. conductive material is loaded to flexible fabric substrate.But there are still materials for the stretchable conductive material of carbon nanomaterial base
Preparation process is complicated, price is relatively high, applies the shortcomings of resistance increases with elongation strain.Therefore, how preparation process is researched and developed
Green, simplicity, low cost, low energy consumption, the stretchable conductor material that can be mass-produced while having excellent properties are its industry
Change the significant challenge that application faces.
Invention content
The present invention provides a kind of stretchable conductive material based on carbonization Modal (Modal) knitted fabric, features
It is, the carbonization knitted fabric is obtained by carrying out high temperature cabonization processing to starting Modal knitted fabric.
In some embodiments, the Modal knitted fabric is weft-knitted Modal knitted fabric.
In some embodiments, the technological process of production of the carbonization Modal knitted fabric includes：In inert gas
Under atmosphere or vacuum atmosphere based on atmosphere or inert gas, Modal knitted fabric is originated described in high-temperature process, to obtain
The carbonization Modal knitted fabric；
The wherein described high temperature process includes：Temperature rise period, temperature holding stage and temperature-fall period；
The temperature of the wherein described temperature holding stage is 200 DEG C to 3000 DEG C, preferably 600 DEG C to 1200 DEG C, especially 900
DEG C to 1100 DEG C；Duration is not less than 5min.
In some embodiments, the carbonization knitted fabric is further compound with other materials.
Preferably, the other materials includes：Silicon-based polymer, rubber, thermoplastic polymer.
In some embodiments, the inert gas is nitrogen, argon gas, helium or its arbitrary combination.
For example, the atmosphere based on the inert gas can be the mixed gas of inert gas and hydrogen, wherein indifferent gas
The ratio of body and hydrogen is more than 1:1, it is greater than 5:1, preferably greater than 10:1, the inert gas can be, for example, argon gas.
Activearm the present invention also provides the stretchable conductive material of the present invention as flexible or stretchable electronic device
The application of part, or the application as flexibility or the conducting wire of stretchable electronic device.
For example, the stretchable conductive material can be as the electrode material of stretchable ultracapacitor, or being applied to can
Energy device is dressed, or as the Heating body material of stretchable heater, or is applied to wearable thermotherapy device.
The present invention also provides a kind of stretchable ultracapacitors, it is characterised in that includes the present invention's in its electrode material
Stretchable conductive material.
The present invention also provides a kind of stretchable heaters, it is characterised in that includes the present invention's in its Heating body material
Stretchable conductive material, operating voltage range are not less than 0.1V, and heating temperature range is not less than 30 DEG C.
The present invention Modal knitted fabric that is carbonized keeps its knitted structure after high temperature cabonization processing, and with it is flexible,
Tensility and electric conductivity can be directly used as stretchable conductive material or compound rear as stretchable conduction material with other substances
Material.The stretchable conductive material has the features such as good conductivity, tensility are good, environmentally protective, preparation is easy, low cost, tool
Have broad application prospects.
Description of the drawings
Fig. 1 is the simple production technological process of the stretchable conductive material of the present invention based on knitted fabric.
Fig. 2 be it is of the present invention using Modal weft-knitting fabric as the flexibility of the stretchable conductive material of raw material, can
Draftability display diagram.(a, c) carbonization Modal knitted fabric；The carbonization Modal knitted fabric of (b, d) polymer encapsulated.
Fig. 3 is of the present invention using Modal weft-knitting fabric as (1050 DEG C) the heat treatment gained carbonizations of raw material high temperature
The scanning electron microscope diagram of knitted fabric.
Fig. 4 is of the present invention using Modal weft-knitting fabric as (1050 DEG C) the heat treatment gained carbonizations of raw material high temperature
The Microstructure characterization figure (transmission electron microscope figure) of knitted fabric.
Fig. 5 is of the present invention using Modal weft-knitting fabric as stretchable conduction material obtained by raw material high-temperature heat treatment
The conductivity of material with different heat treatment temperature variation.
Fig. 6 is (a) of the present invention using Modal weft-knitting fabric as (1050 DEG C) heat treatment gained of raw material high temperature
Be carbonized the stretchable conductive material of knitted fabric resistance with elongation strain variation；(b) of the present invention multiple with elastomeric polymer
That closes is heat-treated the gained carbonization stretchable conductions of knitted fabric for (1050 DEG C) using Modal weft-knitting fabric as raw material high temperature
Material.
Fig. 7 is (a) of the present invention using Modal weft-knitting fabric as (1050 DEG C) heat treatment gained of raw material high temperature
Be carbonized resistance variations stability of the stretchable conductive material of knitted fabric under the load of 50% Cyclic Strain；(b) of the present invention
It is compound using Modal weft-knitting fabric as (1050 DEG C) the heat treatment gained carbonization knittings of raw material high temperature with elastomeric polymer
Resistance variations stability of the stretchable conductive material of fabric under the load of 50% Cyclic Strain.
Fig. 8 is applicating example one of the present invention, and the stretchable conductive material of knitted fabric makees the stretchable super of electrode material
Grade capacitor schematic diagram and the lower cyclic voltammetry curve figure of different stretch strain.(a) stretchable ultracapacitor schematic diagram；(b) carbon
Change the cyclic voltammetry curve figure that knitted fabric makees the stretchable ultracapacitor of electrode material；(c) carbonization knitted fabric makees electrode
The lower cyclic voltammetry curve figure of different stretch strain of the stretchable ultracapacitor of material；(d) polyaniline compound carbonizing is knitted
Object makees the stretchable ultracapacitor cyclic voltammetry curve figure of electrode material；(e) polyaniline compound carbonizing knitted fabric makees electrode
The lower cyclic voltammetry curve figure of stretchable ultracapacitor different stretch strain of material.
Fig. 9 be applicating example two of the present invention, the stretchable heater schematic diagram of the stretchable conductive material of knitted fabric and
Its basic electrical heating performance.
Figure 10 is applicating example two of the present invention, the stretchable heater electrical heating temperature of the stretchable conductive material of knitted fabric
Spend the variation with elongation strain.
Figure 11 is applicating example two of the present invention, the stretchable heater electrical heating of the stretchable conductive material of knitted fabric
The cyclical stability of energy.(a) the electric heating circulation stability under the load of 2.5V direct current cycling switch；(b) in 1.5V direct currents
Under voltage, different number of cycles elongation strains, the electrical heating stability of the heater are loaded.
Figure 12 is applicating example two of the present invention, and the stretchable heater of the stretchable conductive material of knitted fabric is wearable to answer
With displaying.
Specific implementation mode
Modal (Modal) is a kind of common staple fibre, is had in clothing industry especially underwear manufacture view wide
General application.Modal has good flexibility and excellent hygroscopicity, but its fabric stiffness is poor.
Inventor it was unexpectedly observed that by carrying out high temperature cabonization processing to Modal knitted fabric the carbonization that obtains not generation
That knitted fabric, knitted structure are maintained, and have especially advantageous tensility and electric conductivity, and can be directly used as can
Stretch conductive material or compound rear as stretchable conductive material with other substances.
For example, in some embodiments of the present invention, 1050 DEG C of carbonization stretchable conductions of Modal weft-knitting fabric
Material can keep resistance to be basically unchanged within the scope of 70% elongation strain, 1050 DEG C of carbonization Modal latitudes of Ecoflex encapsulation
The stretchable conductive material of needle woven fabric can keep resistance to be basically unchanged in 125% range of strain.
One aspect of the present invention provides a kind of stretchable conductive material based on carbonization Modal knitted fabric, and feature exists
In the carbonization Modal knitted fabric is obtained by carrying out high temperature cabonization processing to starting Modal knitted fabric.
The term as used herein " knitted fabric " has meaning well known in the art, refers to that yarn is constituted line with knitting needle
Circle, then coil mutually go here and there fabric made of set, have to extend in all directions, elastic good feature.
Common knitted fabric includes：Such as cotton knitted fabric, Modal knitted fabric etc..
The knitted fabric of the present invention is not limited to specific weaving method.For example, weft-knitting fabric or through needle
Woven fabric is used equally for the present invention.The term as used herein " starting knitted fabric " refers to the original as high temperature cabonization treatment process
The knitted fabric of material, such as cotton knitted fabric or Modal knitted fabric.In some specific embodiments of the present invention, latitude
Needle woven fabric is specially suitable.
The term as used herein " stretchable conductive material " refers to that the conductive material remains to that it is kept to lead in a stretched state
Electrical property.Stretchable conductive material is especially suitable for flexible, stretchable device, such as wearable device, flexible robot etc..
The technological process of production of carbonization knitted fabric of the present invention includes：Based on inert gas atmosphere or inert gas
Under atmosphere or vacuum atmosphere, knitted fabric is originated described in high-temperature process, to obtain the carbonization knitted fabric.
The temperature of high temperature cabonization processing herein be usually 200 DEG C to 3000 DEG C (such as 200 DEG C, 250 DEG C, 300 DEG C, 350
℃、400℃、450℃、500℃、550℃、600℃、650℃、700℃、750℃、800℃、850℃、900℃、950℃、
1000℃、1050℃、1100℃、1150℃、1200℃、1250℃、1300℃、1350℃、1400℃、1450℃、1500
DEG C), especially 600 to 1050 DEG C；The duration of the temperature holding stage is not less than 5min, such as 100-500 minutes, excellent
Select 150-300 minutes, especially 200 minute.
The term as used herein " inert gas atmosphere " is used interchangeably with " inert atmosphere ", refers to that inert gas accounting is super
Cross 80%, even such as 90% atmosphere.
The term as used herein " atmosphere based on inert gas " refers to that the ratio of inert gas and other gases is more than 1:
1, it is greater than 5:1, preferably greater than 10:1.For example, in one embodiment of the invention, the atmosphere based on the inert gas
In, argon gas：The ratio of hydrogen is 10:1.
The term as used herein " vacuum atmosphere " refers to the atmosphere that pressure is less than an atmospheric pressure.Some implementations of the present invention
A kind of method preparing stretchable conductive material is provided in scheme, including：With knitted fabric (including natural plant fibre fabric
Such as cotton, linen, natural animal fibres fabric such as hairs, mulberry silk kind fabric, rayon such as regenerated celulose fibre
Fabric, cellulose ester fiber fabric, azlon fabric, synthetic fabrics and arbitrary conjugate fiber fabric) be
Raw material are maintained original by the atmosphere based on inert atmosphere or inert gas or the high-temperature heat treatment process under vacuum atmosphere
Knitted fabric key structural feature simultaneously has flexible, tensility and electric conductivity carbonization knitted fabric, the carbonization knitted fabric
It can be directly used as stretchable conductive material or compound rear as stretchable conductive material with other substances.
Embodiment, provides the stretchable conductive materials based on carbonization knitted fabric as soft for some of the present invention
Property or the active components of stretchable electronic device or the application of conducting wire as flexible or stretchable electronic device.Such as can
The electrode material of ultracapacitor is stretched, wearable energy device is used for；For another example as the Heating body material of stretchable heater
Material is used for wearable thermotherapy device.
In some embodiments, the production technology stream of the stretchable conductive material of the invention based on carbonization knitted fabric
Cheng Wei：
(1) it is raw material using starting knitted fabric, it is natural fiber, artificial fibre to originate fiber used by knitted fabric
Dimension, synthetic fibers or arbitrary conjugate fiber；
(2) pass through atmosphere or the high-temperature heat treatment process under vacuum atmosphere based on inert atmosphere or inert gas to be had
The carbonization knitted fabric of flexible, tensility and electric conductivity；
(3) stretchable, the conductive carbonization knitted fabric that step 2) obtains be directly used as stretchable conductive material or and its
It is used as stretchable conductive material after his substance is compound.
Fiber raw material used by fabric can be that natural fiber includes natural plant fibre such as cotton, fiber crops, natural animal
Fiber such as hairs, mulberry silk class；Staple fibre such as regenerated celulose fibre, cellulose ester fiber, azlon；Synthesis
Fiber；Or arbitrary conjugate fiber.
Vegetable raw materials are obtained by the atmosphere based on inert atmosphere or inert gas or the high-temperature heat treatment under vacuum atmosphere
To the carbonization knitted fabric with flexible, tensility and electric conductivity, indifferent gas therein is nitrogen, argon gas, helium or arbitrary
Combination, vacuum atmosphere therein are the arbitrary atmosphere that finger pressure is less than by force an atmospheric pressure, and high-temperature heat treatment temperature therein is
200-3000 DEG C, flexible, tensility and conductivity silicon carbide knitted fabric therein retain the key structural feature of source textile.
Other substances that can be compound with the stretchable conductive material of the present invention include elastomeric polymer or fabric.It is hit by a bullet
Property polymer refer to the polymer for having certain flexibility or tensility, such as silicon substrate elastomeric polymer, rubber, thermoplasticity polymerization
Object.
The stretchable conductive material of the present invention may be used as active components (such as the conduct of flexible or stretchable electronic device
The electrode material of stretchable ultracapacitor is used for wearable energy device；Such as the Heating body as stretchable heater
Material is used for wearable thermotherapy device) or conducting wire as flexible or stretchable electronic device.
The present invention stretchable conductive material can be directly used as ultracapacitor electrode material or with other electrochemistry
It is used as electrode material after active material is compound.Electrochemical active material refers to the material that can improve ultracapacitor chemical property
Material, such as polyaniline, polypyrrole, manganese dioxide belong to such material.
In a preferred embodiment of the invention, stretchable conductive material of the invention and existing stretchable conductive material phase
Than that can have the advantages that following one or more：
(1) vegetable raw materials used by derive from a wealth of sources, are cheap；
(2) preparation process used by is simple, environmentally protective；
(3) stretchable conductive material of the invention shows excellent performance, i.e., under different deformations, electric conductivity is several
It does not change.
(4) stretchable conductive material of the invention is before flexible or stretchable field of electronic devices shows wide application
Scape.
In order to more clearly show the present invention, with reference to embodiments and the present invention is further described in attached drawing.
Embodiments described herein is not used in the restriction present invention and is only more intuitively illustrated to the present invention.
Embodiment 1：Stretchable conductive material is prepared by raw material of Modal weft-knitting fabric
By the modal fabric (ROSILY Modal pure color straight angles trousers) with weft-knitting structure based on argon gas
Argon gas hydrogen (argon gas hydrogen flowing quantity ratio 10:1) under mixed atmosphere or under nitrogen atmosphere, under different temperatures (600 DEG C, 700 DEG C,
800 DEG C, 900 DEG C, 1050 DEG C) high-temperature heat treatment is maintained, and (specific temperature program is for the carbonized fabric of its weft-knitting structure
It is raised to target temperature with the heating rate of 3 DEG C/min and keeps 200min, be then naturally cooling to room temperature), under the temperature program
To carbonization knitted fabric can be directly used as stretchable conductive material, also can with elastomeric polymer (be specially Ecoflex, it is a kind of
Silica gel) it is compound rear as stretchable conductive material, preparation process flow is shown in attached drawing 1.Obtained carbonization knitted fabric is stretchable
Conductive material or the stretchable conductive material of elastomeric polymer compound carbonizing knitted fabric show excellent flexible and stretchable
Property (see attached drawing 2), specifically, the carbonization knitted fabric or elastomeric polymer encapsulation carbonization knitted fabric can bear knot,
Torsional deflection proves its excellent flexibility, and its elongation strain that can be respectively subjected to 75% and 100% proves that its is excellent
Tensility.It is worth mentioning that the carbonization knitted fabric obtained by high-temperature heat treatment still retains the weft-knitting of source textile
Structure (see attached drawing 3), and the lattice fringe structure and polycrystalline diffraction of the transmission electron microscopy figure displaying class graphite of the carbonized fabric
The reason of ring illustrates its microstructure (see attached drawing 4) with micro crystal graphite, this is their ability to high conductivity.In addition, high
The electric conductivity for the carbonization knitted fabric that temperature is thermally treated resulting in is improved with the raising of heat treatment temperature, (see attached drawing 5), for example, tool
The conductivity of heat treatment gained carbonization knitted fabric is up to 15.1S/cm at a temperature of 1050 DEG C for body, and 600 DEG C, 700 DEG C,
The conductivity of gained carbonization knitted fabric is respectively then 5.75E-5S/cm, 0.26S/cm, 2.48S/ at a temperature of 800 DEG C, 900 DEG C
cm、5.28S/cm.It can be seen that its electric conductivity increases with the raising of heat treatment temperature.
Embodiment 2：The resistance of the carbonization stretchable conductive material of Modal weft-knitting fabric changes with elongation strain
The stretchable conductive material of 1050 DEG C of carbonization Modal weft-knitting fabrics described in embodiment 1 and Ecoflex envelopes
Under tensile strain, resistance does not become 1050 DEG C of stretchable conductive materials of carbonization Modal weft-knitting fabric of dress substantially
Change (see attached drawing 6).Such as it can keep within the scope of 70% elongation strain for the carbonization stretchable conductive material of knitted fabric
Resistance is basically unchanged (see attached drawing 6a), and the stretchable conductive material of carbonization knitted fabric of elastomeric polymer encapsulation can be 125%
Resistance is kept to be basically unchanged (see attached drawing 6b) in range of strain, this demonstrate the performances that two kinds of stretchable conductive materials are excellent.
Embodiment 3：Be carbonized stability of the stretchable conductive material of Modal weft-knitting fabric under cyclic tension strain
The stretchable conductive material of 1050 DEG C of carbonization Modal weft-knitting fabrics described in implementation column 1 and Ecoflex envelopes
Under the strain of 50% cyclic tension, resistance is kept 1050 DEG C of carbonization stretchable conductive materials of Modal weft-knitting fabric of dress
Excellent cyclical stability (see attached drawing 7).
Embodiment 4：Carbonization Modal weft-knitting fabric makees stretchable electrode of super capacitor
The Modal weft-knitting fabric that is carbonized is used as the electrode material of ultracapacitor, with PVA-H3PO4Gel electrolyte group
Dress form stretchable ultracapacitor, structural schematic diagram is shown in attached drawing 8 (a), specifically, the structure of the ultracapacitor be by
Two layers of carbonization Modal weft-knitting fabric makees electrode (connect copper sheet by conductive silver glue on fabric and make test electrode) intermediate folder
There is the sandwich structure that gel electrolyte is formed.The ultracapacitor shows excellent chemical property (see attached drawing 8b), tool
For body, under the sweep speed of 10mV/s, the area specific capacitance of the ultracapacitor reaches 7.5mF/cm2.In different stretchings
Under strain, the electrochemistry cyclic voltammetry curve of the ultracapacitor hardly happens variation (see attached drawing 8c), shows its electrochemistry
Performance remains unchanged under tensile strain.In addition, by electrochemical polymer deposition method in carbonization Modal weft-knitting fabric
(specific carrying method can be found in document Graphene/polyaniline woven fabric to upper load polyaniline 5min
composite films asflexible supercapacitor electrodes.Nanoscale,2015,7,7318–
7322) it, is then used as electrode material for super capacitor, which shows relatively carbonization knitted fabric and significantly improve
Chemical property (see attached drawing 8d).Specifically, under the sweep speed of 10mV/s, the area specific capacitance of the ultracapacitor
Up to 246.3mF/cm2, for carbonization Modal weft-knitting fabric~33 times.And under different elongation strains, this is super
The electrochemistry cyclic voltammetry curve of capacitor hardly happens variation (see attached drawing 8e), shows its tensility.
Embodiment 5：Elastomeric polymer encapsulation carbonization Modal weft-knitting fabric makees wearable heater
By the way that carbonization Modal weft-knitting fabric ends obtained by 1050 DEG C of processing described in embodiment 1 are passed through conductive silver
Glue connection copper sheet is made electrode and is then packaged using Ecoflex polymer, and the carbonization knitted fabric heating of polymer encapsulated is obtained
Element, then can be by being loaded on the elastic fabric substrate with strap configurations up to wearable heater element such as attached drawing
Shown in 9a, it can be used for hot compress, thermotherapy etc..Find that the heater shows excellent electricity and adds by being tested for the property to the heater
Hot property is gradually increased with alive its temperature that can be heated of increase is applied to it, and when the direct current for only applying 3.5V
When voltage, electrical heating temperature can reach~150 DEG C (see attached drawing 9b) in a few seconds.In addition, under the DC voltage of 3.0V, when
When applying elongation strain to the heater, constantly increase with the elongation strain of application, the electrical heating temperature of the heater is gradual
(see attached drawing 10) slowly is increased, shows that it remains to keep in a stretched state excellent electrical heating performance, illustrates that it can stretched
It is worked under state in addition, the heater table reveals stable electrical heating-cooling cycle stability, specifically as shown in attached drawing 11a, when
When carrying out switch cycles to the 2.5V direct currents being applied on the heater, which reveals stable temperature and adds hot-cold
But cyclical stability.Moreover, the heater is in the elongation strain load for bearing cycle, electrical heating performance is kept approximately constant
(see attached drawing 11b), l both illustrate the high stability of the stretchable heater.
Due to the flexibility of the heater, draftability, it can be used for wearable thermotherapy device.For example, when the heater is tied up
Onto knee, in knee bends, which reveals heating properties when being stretched better than knee (see attached drawing 12), it was demonstrated that
It is used for the potentiality of thermotherapy as wearable heater.
Claims (9)
1. a kind of stretchable conductive material based on carbonization Modal knitted fabric, which is characterized in that the carbonization knitted fabric
It is obtained by carrying out high temperature cabonization processing to starting Modal knitted fabric.
2. the stretchable conductive material of claim 1, wherein the Modal knitted fabric is weft-knitted Modal knitted fabric.
3. the stretchable conductive material of any one of claim 1-2, wherein the production work of the carbonization Modal knitted fabric
Skill flow includes：Based on inert gas atmosphere or inert gas atmosphere or vacuum atmosphere under, originated not described in high-temperature process
Dai Er knitted fabrics, to obtain the carbonization Modal knitted fabric；
The wherein described high temperature process includes：Temperature rise period, temperature holding stage and temperature-fall period；
The temperature of the wherein described temperature holding stage is 200 DEG C to 3000 DEG C, and the duration is not less than 5min.
4. the stretchable conductive material of any one of claim 1-3, wherein the carbonization knitted fabric further with other materials
Expect compound.
5. the stretchable conductive material of claim 4, wherein the other materials includes：Silicon-based polymer, rubber, thermoplastic poly
Close object.
6. active components of the stretchable conductive material of any one of claim 1-5 as flexible or stretchable electronic device
Using, or as the application of flexibility or the conducting wire of stretchable electronic device.
7. the application of claim 6, wherein electrode material of the stretchable conductive material as stretchable ultracapacitor, or
Applied to wearable energy device, or as the Heating body material of stretchable heater, or it is applied to wearable thermotherapy device.
8. a kind of stretchable ultracapacitor, it is characterised in that any one comprising claim 1-5 can in its electrode material
Stretch conductive material.
9. a kind of stretchable heater, it is characterised in that any one comprising claim 1-5 can in its Heating body material
Conductive material is stretched, operating voltage range is not less than 0.1V, and heating temperature range is not less than 30 DEG C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611131290.9A CN108611792A (en) | 2016-12-09 | 2016-12-09 | A kind of stretchable conductive material and application thereof based on Modal knitted fabric |
| PCT/CN2017/113116 WO2018103552A1 (en) | 2016-12-09 | 2017-11-27 | Modal knitted fabric-based stretchable electrically conductive material and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611131290.9A CN108611792A (en) | 2016-12-09 | 2016-12-09 | A kind of stretchable conductive material and application thereof based on Modal knitted fabric |
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| WO (1) | WO2018103552A1 (en) |
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| CN109758142A (en) * | 2019-01-31 | 2019-05-17 | 青岛光电医疗科技有限公司 | A kind of electrode based on acquiring biological electric signals |
| CN111210998A (en) * | 2020-02-25 | 2020-05-29 | 济南大学 | 3D multifunctional flexible material and application thereof |
| CN114143924A (en) * | 2021-11-30 | 2022-03-04 | 天津工业大学 | Heating temperature sensing layer, carbonized fabric-based flexible heating element, and preparation method and application thereof |
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| CN109797470B (en) * | 2019-01-22 | 2021-02-19 | 王顺方 | Preparation method of flexible conductive yarn |
| CN114762641A (en) * | 2021-01-12 | 2022-07-19 | 鹏鼎控股(深圳)股份有限公司 | Intelligent temperature-adjusting fabric |
| CN114032688B (en) * | 2021-10-09 | 2022-11-15 | 东华大学 | Intrinsic stretchable conductive polymer material and preparation method and application thereof |
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| TW200902783A (en) * | 2007-07-03 | 2009-01-16 | Univ Feng Chia | Porous carbonized fabric with high efficiency and its preparation method and uses |
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| TW200902783A (en) * | 2007-07-03 | 2009-01-16 | Univ Feng Chia | Porous carbonized fabric with high efficiency and its preparation method and uses |
| CN101463521A (en) * | 2007-12-19 | 2009-06-24 | 逢甲大学 | High performance porous carbonized fabric, and preparation method and use thereof |
| US20150017863A1 (en) * | 2010-01-21 | 2015-01-15 | National University Corporation Shinshu University | Process of making a carbon fiber nonwoven fabric |
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| CN114143924A (en) * | 2021-11-30 | 2022-03-04 | 天津工业大学 | Heating temperature sensing layer, carbonized fabric-based flexible heating element, and preparation method and application thereof |
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| WO2018103552A1 (en) | 2018-06-14 |
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