CN106752384A - A kind of elastic nano fiber conductive ink and its preparation method and application - Google Patents
A kind of elastic nano fiber conductive ink and its preparation method and application Download PDFInfo
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Abstract
The present invention discloses a kind of elastic nano fiber conductive ink, including conductive materials, matrix material and solvent, matrix material is uniformly suspended within solvent, and conductive materials are uniformly plated on substrate material surface, and conductive materials are the one kind in polypyrrole, polyaniline and polythiophene；Matrix material is nanofiber；Solvent is volatile organic solvent；Its preparation method includes：1) after thermoplastic elastomer (TPE) is well mixed with acetyl cellulose, elastomer is drawn into screw extruder, cellulose acetate is removed using acetone, obtain nanofiber；2) to adding volatile organic solvent in nanofiber and shear decentralized processing and be made nanofiber suspension；3) to adding conductive high polymer monomer and oxidant dopant, home position polymerization reaction to obtain polymer fluid in nanofiber suspension, polymer fluid is cleaned, obtains final product elastic nano fiber conductive ink.Its preparation method is simple, efficiency high, is adapted to batch production, and elastic nano fiber conductive ink is flexible strong, good conductivity.
Description
Technical field
The present invention relates to conductive ink field, more particularly to a kind of elastic nano fiber conductive ink and preparation method thereof and
Using.
Background technology
Being made up of conductive phase, Binder Phase, organic carrier for traditional conductive ink, organic carrier is dispersed in by conductive phase
Employed in method be physical blending doping method, conduction can not be uniformly dispersed in organic carrier by this process for dispersing
In, its electric property is unstable after causing conductive ink film forming；And disperse uneven conductive phase to be formed in organic carrier
Stress concentration point, reduces the mechanical property of conductive ink after film forming；Secondly, traditional conductive phase is the more active gold such as cupro-nickel
Metal nano-particle, this conductive phase is easily oxidized, and then influences the combination of the electric conductivity and itself and organic carrier of conductive phase
Power.
Chinese invention patent (Authorization Notice No. CN102093774B authorized announcement date 2013.11.06) discloses one kind and leads
Electric ink and preparation method thereof, the conductive ink is 7 including CNT that mass percent is 0.5~5%, mass percent
~25% crystalline flake graphite, organic carrier, binding agent, dispersant, film reinforcing agent and solvent, are increased using binding agent and film
Crystalline flake graphite is bonded in carbon nano tube surface by strong agent, but crystalline flake graphite is easily caused by the way of this bonding in carbon nanometer
Pipe surface disperses uneven problem, and due to the conductive materials for using be CNT with graphite cause the conductive ink into
Its soft elastic is not good after film, it is impossible to be preferably applied to electronic skin field.
Chinese invention patent (Authorization Notice No. CN101077950B award day for announcing 2010.05.19) discloses a kind of conduction
Ink and its preparation method and application, the preparation method is：By thiophene monomer, in a solvent, stirring is anti-for catalyst and dopant
Should, the solvent containing catalyst is then added again, stirring reaction is adding viscosity modifier, dispersed with stirring, by reaction solution in chromatography
Processed using anion-cation exchange resin in post, adding metal dust, stirring obtains conductive ink.The conductive ink can be used for
Printed label RFID antenna, the soft elastic of this conductive ink is not good, and its mechanical property can not preferably be applied to electronic skin
Field.
The content of the invention
It is an object of the invention to provide a kind of preparation method of elastic nano fiber conductive ink, its preparation method is simple,
Efficiency high, is adapted to batch production, and the elastic nano fiber conductive ink for preparing is flexible strong, good conductivity.
Led in pressure sensing and electronic skin it is a further object of the present invention to provide above-mentioned elastic nano fiber conductive ink
The application in domain.
To achieve the above object, present invention employs following technical scheme：
A kind of elastic nano fiber conductive ink, including conductive materials, matrix material and solvent, wherein, conductive materials
It is the one kind in polypyrrole, polyaniline and polythiophene；Matrix material is nanofiber；Solvent is volatile organic solvent；Matrix
Material is uniformly suspended within solvent, and conductive materials are uniformly plated on substrate material surface.
Preferably, the content of nanofiber is 5~25g/L in the elastic nano fiber conductive ink, conductive materials
Content is 0.01~0.2mol/L；The raw material of nanofiber is thermoplastic elastomer (TPE), a diameter of 500~800nm of nanofiber；
Volatile organic solvent is the one kind in ethanol, ether, n-hexane, acetone.
It is highly preferred that the thermoplastic elastomer (TPE) is TPO, styrene analog thermoplastic elastomer, gathers
One kind in urethane thermoplastic elastomer (TPE) and thermoplastic polyamide elastomer.
It is highly preferred that the raw material of the nanofiber is TPO；Conductive materials are polypyrrole；It is organic
Volatile solvent is ether.
A kind of preparation method of above-mentioned elastic nano fiber conductive ink, it is characterised in that：Comprise the following steps：
1) preparation of nanofiber：
After thermoplastic elastomer (TPE) is well mixed with acetyl cellulose, elasticity is extruded and is drawn into using screw extruder
Fiber, using the cellulose acetate in acetone removal elastomer, that is, obtains nanofiber；
2) preparation of nanofiber suspension：
To adding volatile organic solvent in nanofiber and carry out with high shear dispersion machine shearing decentralized processing and be made to receive
Rice fibrous suspension；
3) preparation of elastic nano fiber conductive ink：
Carry out home position polymerization reaction and obtain to conductive high polymer monomer and oxidant dopant is added in nanofiber suspension
Polymer fluid, polymer fluid is cleaned after having reacted with volatile organic solvent, obtains final product elastic nano fiber conductive ink.
Preferably technical scheme of the invention is：The preparation method of elastic nano fiber conductive ink, specifically includes following step
Suddenly：
1) preparation of nanofiber：
Thermoplastic elastomer (TPE) and acetyl cellulose are weighed, thermoplastic elastomer (TPE) is 1 with the weight ratio of acetyl cellulose：
8~10, it is well mixed after extruded using screw extruder and be drawn into elastomer, with acetone soak elastomer removing bullet
Cellulose acetate in property fiber, that is, obtain nanofiber；
2) preparation of nanofiber suspension：
To adding volatile organic solvent in nanofiber and being sheared with high shear dispersion machine, nanofiber is controlled
Content is 5~25g/L, and shear rate is 3000~10000r/min, and shear time is 100~120s, that is, be made nanofiber
Suspension；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and 0.001 is in suspension added to nanofiber
~0.02mol/L conductive high polymer monomers and 0.003~0.06mol/L oxidant dopants, 8~12h of home position polymerization reaction are obtained
Polymer fluid, reaction is finished, and polymer fluid is cleaned with volatile organic solvent 3~4 times, until filtrate clarification obtains elastic nano fibre
Dimension conductive ink.
It is highly preferred that the oxidant dopant is FeCl3、Fe(NO3)3；A diameter of the 500 of the nanofiber~
800nm；The thermoplastic elastomer (TPE) is TPO, styrene analog thermoplastic elastomer, polyurethane thermoplastic
One kind in elastomer and thermoplastic polyamide elastomer；The conductive high polymer monomer is one kind in pyrroles, aniline and thiophene,
The particle diameter of the conductive high polymer monomer is 200nm~10um；The volatile organic solvent is ethanol, ether, n-hexane, third
One kind in ketone；
More electedly, the step 3) in the mol ratio of conductive high polymer monomer and oxidant dopant be 1：3.
A kind of application of above-mentioned elastic nano fiber conductive ink, the elastic nano fiber conductive ink is passed in pressure
Sense and the application in electronic skin field.
Preferably, the elastic nano fiber conductive ink is applied to the pressure sensor of electronic skin.
With FeCl3Oxidant dopant, as a example by pyrroles's conductive high polymer monomer, the process of reaction in-situ is：
It is initially formed pyrroles's performed polymer, such as reaction equation：
Then pyrroles's performed polymer is largely collected as polypyrrole in nanofiber surface.The elastic nano fiber conductive ink of formation
Water, including the nanofiber in volatile organic solvent is suspended in, nanofiber surface is equably attached with polypyrrole.
As can be seen that FeCl from the reaction equation of pyrroles's performed polymer formed above3It is 1 with the mol ratio of pyrroles:1, but
In order to allow pyrroles fully to have reacted, therefore add excessive FeCl3。
The beneficial effects of the present invention are：
1, on the one hand can improve conductive materials by nanofiber high-specific surface area by matrix material of nanofiber
Proportion, so as to improve the electric conductivity of conductive ink；On the other hand the uniform plating of conductive materials is caused using home position polymerization reaction
In nanofiber surface, can be very good solution conventional conductive ink conductive materials and disperse uneven asking in organic matrix
Topic.
2, nanofiber uses thermoplastic elastomer (TPE), and the conductive ink for preparing can be made using the soft elastic of nanofiber
Water is preferably applied to pressure sensing and electronic skin field.
3, conductive materials are uniformly dispersed in the obtained elastic nano fiber conductive ink of the present invention, after shaping mechanical property compared with
It is good.
4, the volatile organic solvent that the present invention is used, such as ethanol, ether, n-hexane, acetone, these solvents can disperse
Nanofiber again can be used as the system solvent for carrying out home position polymerization reaction.
Brief description of the drawings
Fig. 1 is the electron-microscope scanning picture of the nanofiber surface plating polypyrrole of TPO；
Fig. 2 is the electron-microscope scanning picture of the nanofiber of TPO.
Specific embodiment
To more fully understand the present invention, invention is described in detail below with reference to accompanying drawing and instantiation.
To solve the problems, such as that existing conductive ink is flexible bad after printing or other forms are molded, the invention provides
A kind of preparation method of elastic nano fiber conductive ink, its matrix material uses nanofiber, using nanofiber Gao Bibiao
The proportion of conductive materials is improved in face, improves the electric conductivity of conductive ink, and nanofiber uses thermoplastic elastomer (TPE) raw material,
High soft elastic of the conductive ink prepared i.e. with nanofiber.Below will be by specific embodiment come to of the invention excellent
Mode is selected to be described in detail.
Embodiment 1
The preparation method of elastic nano fiber conductive ink：
1) preparation of nanofiber：
Weigh TPO and acetyl cellulose, TPO and acetyl cellulose
Weight ratio be 1：9, extruded using screw extruder after being well mixed and be drawn into elastomer, use acetone soak elastomer
To remove the cellulose acetate in elastomer, that is, obtain nanofiber；A diameter of 500nm of the nanofiber of gained；Screw rod
The temperature that each section of extruder is as shown in table 1：
The temperature of each section of the double screw extruder of table 1
2) preparation of nanofiber suspension：
To adding ether in nanofiber and being sheared with high shear dispersion machine, the content for controlling nanofiber is 10g/
L, shear rate is 5000r/min, and shear time is 120s, that is, be made nanofiber suspension；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and in suspension added to nanofiber
0.001mol/L pyrroles and 0.003mol/L FeCl3, home position polymerization reaction 10h obtains polymer fluid, and reaction is finished, with there is ether
Cleaning polymer fluid 3 times, until filtrate clarification obtains elastic nano fiber conductive ink.The particle diameter of pyrroles is 200nm.
Elastic nano fiber conductive ink obtained in embodiment 1, including raw material is the nanometer of TPO
The content of fiber is 10g/L, and the content of polypyrrole is 0.001mol/L, and a diameter of 500nm of nanofiber, nanofiber is uniform
Be suspended in ether, with reference to Fig. 1 and Fig. 2, polypyrrole is uniformly plated on nanofiber surface.The elastic nano fiber is conductive
Electrical conductivity after ink film forming is 0.2823S/m, elongation at break 30.12%, fracture strength 0.1142MPa.
Embodiment 2
The preparation method of elastic nano fiber conductive ink：
1) preparation of nanofiber：
Weigh styrene analog thermoplastic elastomer and acetyl cellulose, styrene analog thermoplastic elastomer and acetate fiber
The weight ratio of plain ester is 1：8, it is well mixed after extruded using screw extruder and be drawn into elastomer, with acetone soak elasticity
Fiber obtains nanofiber to remove the cellulose acetate in elastomer；A diameter of 800nm of nanofiber；Screw rod is squeezed
The temperature for going out each section of machine is as shown in table 2：
The temperature of each section of the double screw extruder of table 2
2) preparation of nanofiber suspension：
To adding ethanol in nanofiber and being sheared with high shear dispersion machine, the content for controlling nanofiber is 5g/
L, shear rate is 3000r/min, and shear time is 100s, that is, be made nanofiber suspension；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and in suspension added to nanofiber
0.01mol/L aniline and 0.03mol/L Fe (NO3)3, home position polymerization reaction 8h obtains polymer fluid, and reaction is finished, with there is ethanol clear
Polymer fluid is washed 3 times, until filtrate clarification obtains elastic nano fiber conductive ink；The particle diameter of aniline is 8um.
Elastic nano fiber conductive ink obtained in embodiment 2, including raw material receiving for styrene analog thermoplastic elastomer
The content of rice fiber is 5g/L, and the content of polyaniline is 0.01mol/L, and a diameter of 800nm of nanofiber, nanofiber is uniform
Ground suspends in ethanol, and polyaniline is uniformly plated on nanofiber surface.After the elastic nano fiber conductive ink film forming
Electrical conductivity is 0.05743S/m, elongation at break 45.32%, fracture strength 0.2132MPa.
Embodiment 3
The preparation method of elastic nano fiber conductive ink：
1) preparation of nanofiber：
Weigh polyurethane termoplastic elastomer and acetyl cellulose, polyurethane termoplastic elastomer and acetyl cellulose
Weight ratio be 1：10, it is well mixed after extruded using screw extruder and be drawn into elastomer, it is fine with acetone soak elasticity
Dimension obtains nanofiber to remove the cellulose acetate in elastomer；A diameter of 500nm of nanofiber；Screw Extrusion
The temperature that each section of machine is as shown in table 3：
The temperature of each section of the double screw extruder of table 3
2) preparation of nanofiber suspension：
To adding n-hexane in nanofiber and being sheared with high shear dispersion machine, the content for controlling nanofiber is
25g/L, shear rate is 10000r/min, and shear time is 100s, that is, be made nanofiber suspension；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and in suspension added to nanofiber
0.02mol/L thiophene and 0.06mol/L Fe (NO3)3, home position polymerization reaction 12h obtains polymer fluid, and reaction is finished, with have just oneself
Alkane cleaning polymer fluid 4 times, until filtrate clarification obtains elastic nano fiber conductive ink.The particle diameter of thiophene is 10um.
Elastic nano fiber conductive ink obtained in embodiment 3, including raw material is the nanometer of polyurethane termoplastic elastomer
The content of fiber is 25g/L, and the content of polythiophene is 0.02mol/L, and a diameter of 500nm of nanofiber, nanofiber is uniform
Be suspended in n-hexane, polythiophene is uniformly plated on nanofiber surface.After the elastic nano fiber conductive ink film forming
Electrical conductivity is 0.001293S/m, elongation at break 61.25%, fracture strength 0.3412MPa.
Embodiment 4
The preparation method of elastic nano fiber conductive ink：
1) preparation of nanofiber：
Weigh thermoplastic polyamide elastomer and acetyl cellulose, thermoplastic polyamide elastomer and acetyl cellulose
Weight ratio be 1：10, it is well mixed after extruded using screw extruder and be drawn into elastomer, it is fine with acetone soak elasticity
Dimension obtains nanofiber to remove the cellulose acetate in elastomer；A diameter of 700nm of nanofiber；Screw Extrusion
The temperature that each section of machine is as shown in table 4：
The temperature of each section of the double screw extruder of table 4
2) preparation of nanofiber suspension：
To adding acetone in nanofiber and being sheared with high shear dispersion machine, the content for controlling nanofiber is 20g/
L, shear rate is 8000r/min, and shear time is 110s, that is, be made nanofiber suspension；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and in suspension added to nanofiber
0.01mol/L pyrroles and 0.03mol/L FeCl3, home position polymerization reaction 10h obtains polymer fluid, and reaction is finished, and is cleaned with acetone
Polymer fluid 3 times, until filtrate clarification obtains elastic nano fiber conductive ink.The particle diameter of pyrroles is 1um.
Elastic nano fiber conductive ink obtained in embodiment 4, including raw material is the nanometer of thermoplastic polyamide elastomer
The content of fiber is 20g/L, and the content of polypyrrole is 0.01mol/L, and a diameter of 700nm of nanofiber, nanofiber is uniform
Ground suspends in acetone, and polypyrrole is uniformly plated on nanofiber surface.Electricity after the elastic nano fiber conductive ink film forming
Conductance is 0.0007607S/m, elongation at break 70.36%, fracture strength 0.4574MPa.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of elastic nano fiber conductive ink, including conductive materials, matrix material and solvent, it is characterised in that：It is described
Conductive materials are the one kind in polypyrrole, polyaniline and polythiophene；Described matrix material is nanofiber；The solvent is organic
Volatile solvent；Described matrix material is uniformly suspended within solvent, and the conductive materials are uniformly plated on matrix material table
Face.
2. elastic nano fiber conductive ink according to claim 1, it is characterised in that：The elastic nano fiber is conductive
The content of nanofiber is 5~25g/L in ink, and the content of conductive materials is 0.01~0.2mol/L；The nanofiber
Raw material is thermoplastic elastomer (TPE), a diameter of 500~800nm of the nanofiber；The volatile organic solvent is ethanol, second
One kind in ether, n-hexane, acetone.
3. elastic nano fiber conductive ink according to claim 2, it is characterised in that：The thermoplastic elastomer (TPE) is poly-
Olefinic thermoplastic elastomer, styrene analog thermoplastic elastomer, polyurethane termoplastic elastomer and thermoplastic polyamide elastomer
In one kind.
4. elastic nano fiber conductive ink according to claim 2, it is characterised in that：The raw material of the nanofiber is
TPO；The conductive materials are polypyrrole；The volatile organic solvent is ether.
5. a kind of preparation method of elastic nano fiber conductive ink as described in any one of Claims 1 to 4, its feature exists
In：Comprise the following steps：
1) preparation of nanofiber：
After thermoplastic elastomer (TPE) is well mixed with acetyl cellulose, elastic fibre is extruded and is drawn into using screw extruder
Dimension, using the cellulose acetate in acetone removal elastomer, that is, obtains nanofiber；
2) preparation of nanofiber suspension：
Nanowire is made to adding volatile organic solvent in nanofiber and shearing decentralized processing being carried out with high shear dispersion machine
Dimension suspension；
3) preparation of elastic nano fiber conductive ink：
Carry out home position polymerization reaction and be polymerized to conductive high polymer monomer and oxidant dopant is added in nanofiber suspension
Liquid, polymer fluid is cleaned after having reacted with volatile organic solvent, obtains final product elastic nano fiber conductive ink.
6. the preparation method of elastic nano fiber conductive ink according to claim 5, it is characterised in that：Including following step
Suddenly：
1) preparation of nanofiber：
Thermoplastic elastomer (TPE) and acetyl cellulose are weighed, thermoplastic elastomer (TPE) is 1 with the weight ratio of acetyl cellulose：8~
10, it is well mixed after extruded using screw extruder and be drawn into elastomer, with acetone soak elastomer removing elasticity
Cellulose acetate in fiber, that is, obtain nanofiber；
2) preparation of nanofiber suspension：
To adding volatile organic solvent in nanofiber and being sheared with high shear dispersion machine, the content of nanofiber is controlled
It is 5~25g/L, shear rate is 3000~10000r/min, and shear time is 100~120s, that is, be made nanofiber suspension
Liquid；
3) preparation of elastic nano fiber conductive ink：
Nanofiber suspension is placed in ice bath magnetic stirring apparatus and is stirred, and in suspension add 0.001 to nanofiber~
0.02mol/L conductive high polymer monomers and 0.003~0.06mol/L oxidant dopants, 8~12h of home position polymerization reaction are gathered
Liquid is closed, reaction is finished, and polymer fluid is cleaned with volatile organic solvent 3~4 times, until filtrate clarification obtains elastic nano fiber
Conductive ink.
7. the preparation method of elastic nano fiber conductive ink according to claim 5, it is characterised in that described：The oxygen
Change dopant is FeCl3、Fe(NO3)3；A diameter of 500~800nm of the nanofiber；The thermoplastic elastomer (TPE) is polyene
In hydrocarbon thermoplastic elastomer (TPE), styrene analog thermoplastic elastomer, polyurethane termoplastic elastomer and thermoplastic polyamide elastomer
One kind；The conductive high polymer monomer is one kind in pyrroles, aniline and thiophene, and the particle diameter of the conductive high polymer monomer is
200nm~10um；The volatile organic solvent is the one kind in ethanol, ether, n-hexane, acetone.
8. the preparation method of elastic nano fiber conductive ink according to claim 5, it is characterised in that：The step 3)
Middle conductive high polymer monomer is 1 with the mol ratio of oxidant dopant：3.
9. the application of a kind of elastic nano fiber conductive ink as described in any one of Claims 1 to 4, it is characterised in that：Institute
State application of the elastic nano fiber conductive ink in pressure sensing and electronic skin field.
10. the application of elastic nano fiber conductive ink according to claim 9, it is characterised in that：The elastic nano
Fiber conductive ink is applied to the pressure sensor of electronic skin.
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Cited By (4)
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| CN108130621A (en) * | 2017-12-25 | 2018-06-08 | 武汉纺织大学 | Beading elastomer/thermoplastic resin composite nano fiber and its preparation method and application |
| CN109627849A (en) * | 2018-11-22 | 2019-04-16 | 武汉纺织大学 | A kind of carbon nano-tube/poly pyrroles nanotube composite electron ink and preparation method thereof |
| CN112375431A (en) * | 2020-11-09 | 2021-02-19 | 温州格洛博电子有限公司 | Conductive silk screen printing ink for forming conductive substance through in-situ polymerization and preparation method thereof |
| CN113026368A (en) * | 2021-03-10 | 2021-06-25 | 苏州大学 | Preparation method of flexible piezoresistive conductive material |
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| CN104212241A (en) * | 2014-09-01 | 2014-12-17 | 江苏格美高科技发展有限公司 | High-thermal-conductivity polymer conductive ink and production process thereof |
| CN105671962A (en) * | 2016-01-15 | 2016-06-15 | 武汉纺织大学 | Flexible nanofiber-based electronic skin as well as preparation method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104212241A (en) * | 2014-09-01 | 2014-12-17 | 江苏格美高科技发展有限公司 | High-thermal-conductivity polymer conductive ink and production process thereof |
| CN105671962A (en) * | 2016-01-15 | 2016-06-15 | 武汉纺织大学 | Flexible nanofiber-based electronic skin as well as preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108130621A (en) * | 2017-12-25 | 2018-06-08 | 武汉纺织大学 | Beading elastomer/thermoplastic resin composite nano fiber and its preparation method and application |
| CN109627849A (en) * | 2018-11-22 | 2019-04-16 | 武汉纺织大学 | A kind of carbon nano-tube/poly pyrroles nanotube composite electron ink and preparation method thereof |
| CN109627849B (en) * | 2018-11-22 | 2021-09-21 | 武汉纺织大学 | Carbon nanotube/polypyrrole nanotube composite electronic ink and preparation method thereof |
| CN112375431A (en) * | 2020-11-09 | 2021-02-19 | 温州格洛博电子有限公司 | Conductive silk screen printing ink for forming conductive substance through in-situ polymerization and preparation method thereof |
| CN113026368A (en) * | 2021-03-10 | 2021-06-25 | 苏州大学 | Preparation method of flexible piezoresistive conductive material |
| WO2022188262A1 (en) * | 2021-03-10 | 2022-09-15 | 苏州大学 | Preparation method for flexible piezoresistive conductive material |
| CN113026368B (en) * | 2021-03-10 | 2023-12-26 | 苏州大学 | Preparation method of flexible piezoresistive conductive material |
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