CN112853544A - Flexible stretchable conductive fiber for wearable equipment and preparation method thereof - Google Patents
Flexible stretchable conductive fiber for wearable equipment and preparation method thereof Download PDFInfo
- Publication number
- CN112853544A CN112853544A CN202110245874.3A CN202110245874A CN112853544A CN 112853544 A CN112853544 A CN 112853544A CN 202110245874 A CN202110245874 A CN 202110245874A CN 112853544 A CN112853544 A CN 112853544A
- Authority
- CN
- China
- Prior art keywords
- conductive fiber
- fiber
- ethylenedioxythiophene
- poly
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 150
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims abstract description 80
- 239000002042 Silver nanowire Substances 0.000 claims abstract description 67
- 239000012792 core layer Substances 0.000 claims abstract description 54
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 48
- 229960002796 polystyrene sulfonate Drugs 0.000 claims abstract description 46
- 239000011970 polystyrene sulfonate Substances 0.000 claims abstract description 46
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 40
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 25
- 238000002166 wet spinning Methods 0.000 claims abstract description 17
- 239000000243 solution Substances 0.000 claims description 74
- 238000009987 spinning Methods 0.000 claims description 69
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- 239000012510 hollow fiber Substances 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- 230000001112 coagulating effect Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 6
- 229920006132 styrene block copolymer Polymers 0.000 claims description 6
- -1 styrene-ethylene-butylene-styrene Chemical class 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 229920006465 Styrenic thermoplastic elastomer Polymers 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229920000767 polyaniline Polymers 0.000 description 9
- 229920000144 PEDOT:PSS Polymers 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229920001940 conductive polymer Polymers 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000002070 nanowire Substances 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000017 hydrogel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920005594 polymer fiber Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920000128 polypyrrole Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
Abstract
The invention relates to the technical field of stretchable conductive fibers, in particular to a flexible stretchable conductive fiber for wearable equipment. The conductive fiber is prepared by adopting a coaxial wet spinning technology, the longitudinal section of the conductive fiber is a core layer and a skin layer from inside to outside, and the core layer is made of poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire has the advantages that the skin layer is made of styrene thermoplastic elastomer, the strain force of the stretchable conductive fiber is 25.05-39.05MPa, the strain rate is 1270.54-1510.54%, and the resistivity is 35.49-40.49S/cm. The invention also comprises a preparation method of the flexible stretchable conductive fiber for the wearable equipment. The invention can realize continuous and industrialized production, effectively improves the fiber uniformity, has good tensile property, fatigue resistance and difficult damage, ensures good conductive performance because the conductive material is not easy to fall off, has simple preparation flow and is worthy of wide popularization and application.
Description
Technical Field
The invention relates to the technical field of stretchable conductive fibers, in particular to a flexible stretchable conductive fiber for wearable equipment and a preparation method thereof.
Background
With the progress and development of flexible electronics and wearable devices, various intelligent wearable devices are coming to appear in people's lives. The flexible lead capable of bearing large deformation is the most basic and important basic part of wearable equipment, electronic skin and stretchable devices, and plays a role of a bridge for conducting communication among all components.
The conventional lead wire has a limitation that large deformation and stable conductivity cannot coexist. For example, although the conventional metal fiber has high electrical conductivity, the rigid characteristic of the metal fiber is difficult to meet the requirement of flexibility and drawability, and the high polymer fiber shows wide application prospects in drawable electronic devices due to the characteristics of flexibility, easy modification and spinnability, however, most of the high polymer fibers except for the electrical insulation of the conductive polymer must be modified to prepare the conductive fiber, and the realization of the high electrical conductivity of the electronic component while maintaining the high electrical conductivity is the key to prepare the flexible conductor.
In recent years, flexible composite conductive fibers or yarns having good conductivity, high stretchability and high sensitivity have become a new choice. For example, in the existing research, the conductive fiber is mainly prepared by wet spinning of conductive polymers such as Polyaniline (PANI), polypyrrole (PPY) and poly 3, 4-ethylenedioxythiophene (PEDOT), or the elastic conductive fiber is prepared by a method of coating the surface of a rubber fiber, or the elastic conductive fiber is coated with conductive particles on the surface of an elastic matrix fiber by using metal alloys and modified block copolymers of silver and carbon nanotubes, such as the elastic conductive fibers disclosed in patent publications CN104499272A, CN101487148A and CN103390467A, however, the preparation methods of these fibers are difficult to meet the requirement of maintaining high conductivity in a highly drawn state, and will inevitably cause the increase of equivalent series resistance of a fibrous supercapacitor in the drawing process, thus deteriorating the performance of the supercapacitor.
The existing flexible stretchable lead mainly consists of an elastomer and an electric conductor. Styrenic thermoplastic elastomers (SBCs) are the ones with the highest worldwide production and the most similar properties to rubber. Because the molecular chain of the SEBS hardly has unsaturated double bonds, the SEBS has good performances in oxidation resistance, ultraviolet resistance, thermal stability, weather resistance and the like, the use temperature can reach 130 ℃, and meanwhile, the SEBS also has good tensile strength and excellent elongation at break. The PEDOT, PSS, is an aqueous solution of a high molecular polymer, has high conductivity and can be gelled at room temperature. Metallic nanowires refer to the design of one or more metals configured into a nanowire configuration. The metal nanowires have the characteristics of low resistance and high electrochemical response efficiency and are applied to many fields. In the prior art, PEDOT, PSS or AgNWs and polymer materials are mostly selected for blending and spinning to achieve the conductivity, but the fiber prepared by the method has large resistance. In some cases, PEDOT, PSS or AgNWs are coated on the surface of the fiber to prepare the conductive composite fiber, but the surface of the fiber prepared by the method is easy to fall off due to abrasion, so that the conductive composite fiber is not beneficial to long-term use.
For another example, patent CN 109735953 a discloses a coaxial wet spinning technology for preparing TPE/PANI skin-core structure elastic conductive fiber and wearable stress sensing application, wherein the preparation method comprises wet spinning the skin-core of styrene, 2-methyl-1, 3-butadiene polymer (TPE) and Polyaniline (PANI) hydrogel dissolved in dichloromethane to prepare high elastic conductive fiber with skin of TPE and core of PANI structure. The TPE has good tensile property and is nontoxic; the PANI has excellent conductivity; and a large amount of PANI is adhered in the TPE tube, and a conductive path can be formed continuously through stretching and dislocation in the stretching process. Therefore, the invention can be used as a wearable device and can well change the bending of fingers; wrist rotation and elbow rotation bending responses and a series of corresponding working curves are simulated. Although PANI in the above patent is also electrically conductive, its conductivity is weaker compared to silver nanowires.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the flexible stretchable conductive fiber for the wearable equipment and the preparation method thereof, wherein the flexible stretchable conductive fiber has the advantages of excellent conductivity, long service life, simple preparation method and high production efficiency.
The technical scheme adopted by the invention for realizing the purpose is as follows: the flexible stretchable conductive fiber for the wearable equipment is prepared by adopting a coaxial wet spinning technology, the longitudinal section of the conductive fiber is a core layer and a skin layer from inside to outside, and the core layer is made of poly (3, 4-ethylenedioxythiophene): the material of the skin layer is styrene thermoplastic elastomer, the strain force of the stretchable conductive fiber is 25.05-39.05MPa, the strain rate is 1270.54-1510.54%, and the resistivity is 35.49-40.49S/cm.
The above-mentioned wearable device uses the flexible and stretchable conductive fiber, in the core layer poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate to the silver nanowires can be 7:3, 5:5, 3: 7.
The flexible stretchable conductive fiber for the wearable device comprises poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate is poly (3, 4-ethylenedioxythiophene): preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
The flexible stretchable conductive fiber for the wearable device comprises a styrene-ethylene-butylene-styrene block copolymer; the poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is PEDOT, PSS/AgNWs.
A preparation method of flexible stretchable conductive fibers for wearable equipment comprises the following steps:
s1, material preparation: preparing a styrene thermoplastic elastomer dissolving solution as a skin layer spinning solution and ethanol as a core layer spinning solution for later use;
s2, preparing ethanol with the mass concentration of 95% as coagulating bath liquid;
s3, taking the skin layer spinning solution prepared in the step S1 as a skin layer and the core layer spinning solution as a core layer, controlling the skin layer spinning solution and the core layer spinning solution to be injected into the coagulating bath liquid prepared in the step S2 at different flow rate ratios by adopting a skin-core structure fiber spinning device, carrying out coaxial wet spinning to obtain skin-core structure fibers, and winding and collecting the prepared skin-core structure fibers;
s4, transferring the skin-core structure fiber prepared in the step S3 into deionized water for soaking for 1-3h, and then drying at 60 ℃ for 3-5h until the ethanol in the core layer is completely volatilized to prepare a hollow fiber;
s5, preparing poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate/silver nanowire mixed solution, poly (3, 4-ethylenedioxythiophene): mixing the polystyrene sulfonate aqueous solution and the silver nanowires according to a certain volume ratio, stirring for 3-4h, and carrying out ultrasonic treatment for 25-35min to form poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate/silver nanowire mixed solution; preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
S6, the poly (3, 4-ethylenedioxythiophene) prepared in the step S5: injecting the polystyrene sulfonate/silver nanowire mixed solution into the hollow fiber prepared in the step S4 to obtain a conductive fiber; wherein, the poly (3, 4-ethylenedioxythiophene) is injected into a syringe: the polystyrene sulfonate/silver nanowire mixed solution is injected into the hollow fiber.
S7, applying prestress on the conductive fiber prepared in the step S6 to keep the strain of the conductive fiber at 750-850%, and then placing the conductive fiber at room temperature for drying for 10-12h to make the poly (3, 4-ethylenedioxythiophene): and (3) gelatinizing the polystyrene sulfonate/silver nanowire mixed solution, and withdrawing the prestress to obtain the stretchable conductive fiber.
In the above method for preparing the flexible stretchable conductive fiber for a wearable device, in step S1, when preparing the skin layer spinning solution, the styrene-based thermoplastic elastomer is added into a tetrahydrofuran solution with a mass concentration of 70% to prepare the flexible stretchable conductive fiber.
In the above preparation method of the flexible stretchable conductive fiber for wearable equipment, in step S3, the flow rate of the skin layer spinning solution is set to 6-10mm/min, the flow rate of the core layer spinning solution is set to 5-10mm/min, and the flow rate of the skin layer spinning solution is slightly faster than the flow rate of the core layer spinning solution.
In the above method for preparing the flexible and stretchable conductive fiber for a wearable device, in step S3, when the skin-core structure fiber is wound and collected, the winding speed of the skin-core structure fiber is controlled to be 7 mm/min.
In the above method for preparing the flexible stretchable conductive fiber for a wearable device, in step S5, the ratio of poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate aqueous solution to the silver nanowires is 7:3, 5:5 and 3: 7.
In the step S3, the skin-core structure fiber spinning device includes a container for containing a coagulation bath solution, a front support roller, a rear support roller, and a winding device for winding the prepared polyvinyl alcohol/silicone rubber fiber, and further includes two coaxial needles, one of the two coaxial needles is used for injecting a skin layer spinning solution into the coagulation bath solution, and the other one is used for injecting a core layer spinning solution.
The flexible stretchable conductive fiber for the wearable equipment has the beneficial effects that: the invention spins hollow fiber by coaxial wet spinning technology, using styrene thermoplastic elastomer solution as skin layer spinning solution and ethanol as core layer spinning solution, and then poly (3, 4-ethylenedioxythiophene): and compounding the polystyrene sulfonate/silver nanowire materials, injecting the compound into the hollow fiber, and allowing the compound to react with poly (3, 4-ethylenedioxythiophene): after the polystyrene sulfonate is gelatinized, the silver nanowires are uniformly distributed in the gel, so that the silver nanowires are firmly adhered to the inside of the fiber, and the conductivity of the conductive fiber is improved and stabilized, therefore, the obtained conductive fiber is fatigue-resistant and not easy to damage, the silver nanowire conductive material is not easy to fall off, the conductivity is greatly improved, and the service life is prolonged; the flexible stretchable conductive fibers and the elastic yarn can be combined and woven into the elastic woven belt, and the elastic woven belt is applied to intelligent wearable equipment.
The invention abandons the traditional preparation method, namely a mode of preparing the stretchable conductive fiber by blending and spinning PEDOT, PSS or AgNWs and polymer materials or coating PEDOT, PSS or AgNWs on the surface of the fiber. And a novel concept of preparing the conductive fiber internally loaded with PEDOT: PSS/AgNWs by adopting a coaxial wet spinning technology, wherein poly (3, 4-ethylenedioxythiophene): the conductive fiber with the sheath-core structure is prepared by taking the polystyrene sulfonate/silver nanowire as a core layer and taking the styrene-ethylene-butylene-styrene segmented copolymer as a sheath layer, and the conductive fiber has the advantages of good stretchability, fatigue resistance, difficulty in damage, difficulty in falling of a conductive material and guarantee of good conductivity. The preparation method is simple and economical, the fiber spinnability is good, and the aperture size and the wall thickness of the formed conductive fiber inside and outside the fiber are adjustable. The invention can realize continuous and industrialized production, effectively improves the fiber uniformity, has stable production process, high production efficiency, simple preparation flow and low cost, and is worthy of wide popularization and application.
Drawings
FIG. 1 is a schematic cross-sectional view of an SEBS/PEDOT/PSS/AgNWs flexible stretchable conductive fiber prepared in example 1;
FIG. 2 is a schematic structural view of a skin-core structure fiber spinning device;
FIG. 3 is a schematic diagram of the injection of a mixed PEDOT/PSS/AgNWs solution into a hollow fiber.
Detailed Description
The invention is further explained in detail with reference to the drawings and the specific embodiments;
example 1
As shown in fig. 1, 2 and 3, a flexible stretchable conductive fiber for wearable devices is prepared by a coaxial wet spinning technology, wherein a longitudinal section of the conductive fiber is a core layer and a skin layer from inside to outside, and the core layer is made of poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is characterized in that the skin layer is made of a styrene thermoplastic elastomer. In this example, the core layer is poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate to the silver nanowires can be 7:3, and the styrene thermoplastic elastomer is a styrene-ethylene-butylene-styrene block copolymer; poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is PEDOT, PSS/AgNWs. The strain force of the conductive fiber is 27-32MPa, the strain rate is 1320-1480.54%, and the resistivity is 36-38S/cm.
Wherein, poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate is poly (3, 4-ethylenedioxythiophene): preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
A preparation method of flexible stretchable conductive fibers for wearable equipment comprises the following steps:
s1, material preparation: preparing a styrene thermoplastic elastomer dissolving solution as a skin layer spinning solution and ethanol as a core layer spinning solution for later use; when preparing a skin layer spinning solution, adding a styrene thermoplastic elastomer into a tetrahydrofuran solution with the mass concentration of 70% for preparation;
s2, preparing ethanol with the mass concentration of 95% as coagulating bath liquid 9;
s3, taking the skin layer spinning solution prepared in the step S1 as a skin layer 10 and the core layer spinning solution as a core layer 11, controlling the skin layer spinning solution and the core layer spinning solution to be injected into the coagulating bath liquid prepared in the step S2 at different flow rate ratios by adopting a skin-core structure fiber spinning device, carrying out coaxial wet spinning to obtain skin-core structure fibers, and winding and collecting the prepared skin-core structure fibers; wherein the flow rate of the sheath spinning solution is set to be 8mm/min, the flow rate of the core spinning solution is set to be 5mm/min, and the winding speed of the sheath-core structure fiber is controlled to be 7 mm/min.
S4, transferring the skin-core structure fiber prepared in the step S3 into deionized water to be soaked for 2 hours, then drying at the temperature of 60 ℃ for 4 hours until the ethanol in the core layer is completely volatilized, and preparing a hollow fiber 12, wherein the outer diameter of the hollow fiber is 2.2mm, and the inner diameter of the hollow fiber is 1.7 mm;
s5, preparing a PEDOT/PSS/AgNWs mixed solution 13, mixing the PEDOT/PSS and AgNWs according to the volume ratio of 7:3, stirring for 3h, and carrying out ultrasonic treatment for 28min to form a PEDOT/PSS/AgNWs mixed solution; specifically, when a PEDOT/PSS aqueous solution is prepared, the mass ratio of PEDOT to PSS is 1: 2.5, the solid content is 20 mg/L;
s6, injecting the PEDOT/PSS/AgNWs mixed solution prepared in the step S5 into the hollow fiber prepared in the step S4 to obtain a conductive fiber; wherein, a syringe is adopted to inject the PEDOT-PSS/AgNWs mixed solution into the hollow fiber;
s7, applying prestress to the conductive fiber prepared in the step S6 to keep the strain of the conductive fiber at 800%, then placing the conductive fiber at room temperature for drying for 10 hours to gelatinize a PEDOT: PSS/AgNWs mixed solution, and withdrawing the prestress to obtain the stretchable conductive fiber.
In this embodiment, the skin-core structure fiber spinning device comprises a container 1 for containing coagulation bath liquid, a front support roller 2, a rear support roller 3, a winding device 4 for winding prepared polyvinyl alcohol/silicone rubber fibers, and a coaxial needle 5, wherein the coaxial needle 5 is connected with an injector 6 through a hose, the injector 6 is provided with two injectors, one injector is used for injecting a skin layer spinning solution 7 into the coagulation bath liquid, and the other injector is used for injecting a core layer spinning solution 8.
According to the invention, the hollow fiber is spun through coaxial wet spinning, and then the composite conductive material is injected into the fiber, so that the core layer material is PEDOT/PSS conductive polymer hydrogel and silver nanowires, the silver nanowires belong to the best metal and have the best conductivity, but easily fall off on the inner surface of the fiber, and the PEDOT/PSS can fix the silver nanowires in the fiber without losing too much conductivity, so that the conductivity of the conductive fiber is greatly improved. The core layer and the skin layer are made of flexible and stretchable materials, so that the core layer and the skin layer are fatigue-resistant and not easy to damage, and the conductive materials are not easy to drop, so that the good conductivity is ensured. Specifically, AgNWs is mixed with PEDOT: PSS, and after the PEDOT: PSS is gelatinized, the AgNWs are distributed in the gel, so that the AgNWs are firmly adhered to the inside of the fiber, and the conductivity of the fiber is improved and stabilized. The manufacturing method is simple and economical, the spinnability is good, and the aperture size and the wall thickness of the formed fiber inside and outside the fiber are adjustable. The flexible wires and the elastic yarns can be combined and woven into the elastic woven belts, and the elastic woven belts are applied to intelligent wearable equipment devices.
Example 2
A flexible stretchable conductive fiber for wearable equipment is prepared by adopting a coaxial wet spinning technology, wherein the longitudinal section of the conductive fiber is a core layer and a skin layer from inside to outside, and the core layer is made of poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is characterized in that the skin layer is made of a styrene thermoplastic elastomer. In this example, the core layer is poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate to the silver nanowires can be 5:5, and the styrene thermoplastic elastomer is a styrene-ethylene-butylene-styrene block copolymer; poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is PEDOT, PSS/AgNWs. The strain force of the conductive fiber is 27-32MPa, the strain rate is 1350-.
Wherein, poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate is poly (3, 4-ethylenedioxythiophene): preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
A preparation method of flexible stretchable conductive fibers for wearable equipment comprises the following steps:
s1, material preparation: preparing a styrene thermoplastic elastomer dissolving solution as a skin layer spinning solution and ethanol as a core layer spinning solution for later use; when preparing a skin layer spinning solution, adding a styrene thermoplastic elastomer into a tetrahydrofuran solution with the mass concentration of 70% for preparation;
s2, preparing ethanol with the mass concentration of 95% as coagulating bath liquid;
s3, taking the skin layer spinning solution prepared in the step S1 as a skin layer and the core layer spinning solution as a core layer, controlling the skin layer spinning solution and the core layer spinning solution to be injected into the coagulating bath liquid prepared in the step S2 at different flow rate ratios by adopting a skin-core structure fiber spinning device, carrying out coaxial wet spinning to obtain skin-core structure fibers, and winding and collecting the prepared skin-core structure fibers; wherein the flow rate of the sheath spinning solution is set to be 9mm/min, the flow rate of the core spinning solution is set to be 7mm/min, and the winding speed of the sheath-core structure fiber is controlled to be 7 mm/min.
S4, transferring the skin-core structure fiber prepared in the step S3 into deionized water to be soaked for 2 hours, then drying at the temperature of 60 ℃ for 4 hours until the ethanol in the core layer is completely volatilized, and preparing a hollow fiber, wherein the outer diameter of the hollow fiber is 2.2mm, and the inner diameter of the hollow fiber is 1.7 mm;
s5, preparing a PEDOT/PSS/AgNWs mixed solution, mixing the PEDOT/PSS and the AgNWs according to the volume ratio of 5:5, stirring for 3.5h, and carrying out ultrasonic treatment for 32min to form the PEDOT/PSS/AgNWs mixed solution; specifically, when a PEDOT/PSS aqueous solution is prepared, the mass ratio of PEDOT to PSS is 1: 2.5, the solid content is 20 mg/L;
s6, injecting the PEDOT/PSS/AgNWs mixed solution prepared in the step S5 into the hollow fiber prepared in the step S4 to obtain a conductive fiber; wherein, a syringe is adopted to inject the PEDOT-PSS/AgNWs mixed solution into the hollow fiber;
s7, applying prestress to the conductive fiber prepared in the step S6 to keep the strain of the conductive fiber at 800%, then placing the conductive fiber at room temperature for drying for 11 hours to gelatinize a PEDOT: PSS/AgNWs mixed solution, and withdrawing the prestress to obtain the stretchable conductive fiber.
Example 3
A flexible stretchable conductive fiber for wearable equipment is prepared by adopting a coaxial wet spinning technology, wherein the longitudinal section of the conductive fiber is a core layer and a skin layer from inside to outside, and the core layer is made of poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is characterized in that the skin layer is made of a styrene thermoplastic elastomer. In this example, the core layer is poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate to the silver nanowires can be 3:7, and the styrene thermoplastic elastomer is a styrene-ethylene-butylene-styrene block copolymer; poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate/silver nanowire is PEDOT, PSS/AgNWs. The strain force of the conductive fiber is 27-32MPa, the strain rate is 1320-1480.54%, and the resistivity is 36-38S/cm.
Wherein, poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate is poly (3, 4-ethylenedioxythiophene): preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
A preparation method of flexible stretchable conductive fibers for wearable equipment comprises the following steps:
s1, material preparation: preparing a styrene thermoplastic elastomer dissolving solution as a skin layer spinning solution and ethanol as a core layer spinning solution for later use; when preparing a skin layer spinning solution, adding a styrene thermoplastic elastomer into a tetrahydrofuran solution with the mass concentration of 70% for preparation;
s2, preparing ethanol with the mass concentration of 95% as coagulating bath liquid;
s3, taking the skin layer spinning solution prepared in the step S1 as a skin layer and the core layer spinning solution as a core layer, controlling the skin layer spinning solution and the core layer spinning solution to be injected into the coagulating bath liquid prepared in the step S2 at different flow rate ratios by adopting a skin-core structure fiber spinning device, carrying out coaxial wet spinning to obtain skin-core structure fibers, and winding and collecting the prepared skin-core structure fibers; wherein, the flow rate of the sheath spinning solution is set to be 10mm/min, the flow rate of the core spinning solution is set to be 9mm/min, and the winding speed of the sheath-core structure fiber is controlled to be 7 mm/min.
S4, transferring the skin-core structure fiber prepared in the step S3 into deionized water to be soaked for 2 hours, then drying at the temperature of 60 ℃ for 4 hours until the ethanol in the core layer is completely volatilized, and preparing a hollow fiber, wherein the outer diameter of the hollow fiber is 2.2mm, and the inner diameter of the hollow fiber is 1.7 mm;
s5, preparing a PEDOT/PSS/AgNWs mixed solution, mixing the PEDOT/PSS and the AgNWs according to the volume ratio of 3:7, stirring for 4h, and carrying out ultrasonic treatment for 30min to form the PEDOT/PSS/AgNWs mixed solution; specifically, when a PEDOT/PSS aqueous solution is prepared, the mass ratio of PEDOT to PSS is 1: 2.5, the solid content is 20 mg/L;
s6, injecting the PEDOT/PSS/AgNWs mixed solution prepared in the step S5 into the hollow fiber prepared in the step S4 to obtain a conductive fiber; wherein, a syringe is adopted to inject the PEDOT-PSS/AgNWs mixed solution into the hollow fiber;
s7, applying prestress to the conductive fiber prepared in the step S6 to keep the strain of the conductive fiber at 810%, then placing the conductive fiber at room temperature for drying for 12 hours to gelatinize a PEDOT: PSS/AgNWs mixed solution, and withdrawing the prestress to obtain the stretchable conductive fiber.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made according to the spirit of the present disclosure should be covered within the scope of the present disclosure.
Claims (10)
1. The utility model provides a wearable flexible conductive fiber that stretches of equipment, conductive fiber adopts coaxial wet spinning technique preparation to obtain, the longitudinal section of the conductive fiber that stretches is from inside to outside core layer and cortex, its characterized in that: the core layer is made of poly (3, 4-ethylenedioxythiophene): the material of the skin layer is styrene thermoplastic elastomer, the strain force of the stretchable conductive fiber is 25.05-39.05MPa, the strain rate is 1270.54-1510.54%, and the resistivity is 35.49-40.49S/cm.
2. The flexible stretchable conductive fiber for wearable device according to claim 1, wherein: poly (3, 4-ethylenedioxythiophene) in the core layer: the volume ratio of the polystyrene sulfonate to the silver nanowires can be 7:3, 5:5, 3: 7.
3. The flexible stretchable conductive fiber for wearable device according to claim 1, wherein: the poly (3, 4-ethylenedioxythiophene): the polystyrene sulfonate is poly (3, 4-ethylenedioxythiophene): preparing poly (3, 4-ethylenedioxythiophene): when the polystyrene sulfonate is an aqueous solution, the ratio of poly (3, 4-ethylenedioxythiophene) to polystyrene sulfonate is 1: 2.5, the solid content is 20 mg/L.
4. The flexible stretchable conductive fiber for wearable device according to claim 1, wherein: the styrenic thermoplastic elastomer comprises a styrene-ethylene-butylene-styrene block copolymer.
5. A method for preparing the flexible stretchable conductive fiber for the wearable device according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, material preparation: preparing a styrene thermoplastic elastomer dissolving solution as a skin layer spinning solution and ethanol as a core layer spinning solution for later use;
s2, preparing ethanol with the mass concentration of 95% as coagulating bath liquid;
s3, taking the skin layer spinning solution prepared in the step S1 as a skin layer and the core layer spinning solution as a core layer, controlling the skin layer spinning solution and the core layer spinning solution to be injected into the coagulating bath liquid prepared in the step S2 at different flow rate ratios by adopting a skin-core structure fiber spinning device, carrying out coaxial wet spinning to obtain skin-core structure fibers, and winding and collecting the prepared skin-core structure fibers;
s4, transferring the skin-core structure fiber prepared in the step S3 into deionized water for soaking for 1-3h, and then drying at 60 ℃ for 3-5h until the ethanol in the core layer is completely volatilized to prepare a hollow fiber;
s5, preparing poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate/silver nanowire mixed solution, poly (3, 4-ethylenedioxythiophene): mixing the polystyrene sulfonate aqueous solution and the silver nanowires according to a certain volume ratio, stirring for 3-4h, and carrying out ultrasonic treatment for 25-35min to form poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate/silver nanowire mixed solution;
s6, the poly (3, 4-ethylenedioxythiophene) prepared in the step S5: injecting the polystyrene sulfonate/silver nanowire mixed solution into the hollow fiber prepared in the step S4 to obtain a conductive fiber;
s7, applying prestress on the conductive fiber prepared in the step S6 to keep the strain of the conductive fiber at 750-850%, and then placing the conductive fiber at room temperature for drying for 10-12h to make the poly (3, 4-ethylenedioxythiophene): and (3) gelatinizing the polystyrene sulfonate/silver nanowire mixed solution, and withdrawing the prestress to obtain the stretchable conductive fiber.
6. The method for preparing the flexible stretchable conductive fiber for the wearable device according to claim 5, wherein the method comprises the following steps: in the step S1, when preparing the skin layer spinning solution, the styrene-based thermoplastic elastomer is added to a tetrahydrofuran solution having a mass concentration of 70% to prepare the skin layer spinning solution.
7. The method for preparing the flexible stretchable conductive fiber for the wearable device according to claim 5, wherein the method comprises the following steps: in the step S3, the flow rate of the skin layer spinning solution is set to 6 to 10mm/min, the flow rate of the core layer spinning solution is set to 5 to 10mm/min, and the flow rate of the skin layer spinning solution is slightly faster than the flow rate of the core layer spinning solution.
8. The method for preparing the flexible stretchable conductive fiber for the wearable device according to claim 5, wherein the method comprises the following steps: in the step S3, the winding speed of the sheath-core structure fiber is controlled to be 7mm/min when the sheath-core structure fiber is wound and collected.
9. The method for preparing the flexible stretchable conductive fiber for the wearable device according to claim 5, wherein the method comprises the following steps: in said step S5, poly (3, 4-ethylenedioxythiophene): the volume ratio of the polystyrene sulfonate aqueous solution to the silver nanowires is 7:3, 5:5 and 3: 7.
10. The method for preparing the flexible stretchable conductive fiber for the wearable device according to claim 5, wherein the method comprises the following steps: in step S3, the skin-core structure fiber spinning device includes a container for containing a coagulation bath solution, a front support roller, a rear support roller, and a winding device for winding the prepared polyvinyl alcohol/silicone rubber fiber, and further includes two coaxial needles, one of the two coaxial needles is used for injecting the skin layer spinning solution into the coagulation bath solution, and the other is used for injecting the core layer spinning solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245874.3A CN112853544A (en) | 2021-03-05 | 2021-03-05 | Flexible stretchable conductive fiber for wearable equipment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245874.3A CN112853544A (en) | 2021-03-05 | 2021-03-05 | Flexible stretchable conductive fiber for wearable equipment and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112853544A true CN112853544A (en) | 2021-05-28 |
Family
ID=75994185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110245874.3A Pending CN112853544A (en) | 2021-03-05 | 2021-03-05 | Flexible stretchable conductive fiber for wearable equipment and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112853544A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075707A (en) * | 2021-10-26 | 2022-02-22 | 西安理工大学 | Preparation method of flexible wet-spun piezoelectric-conductive core-spun yarn |
| CN114395813A (en) * | 2022-01-13 | 2022-04-26 | 东华大学 | Preparation method of recyclable hollow SBS fiber |
| CN115467035A (en) * | 2022-09-07 | 2022-12-13 | 五邑大学 | Conductive yarn and preparation method thereof |
| CN115679468A (en) * | 2022-10-24 | 2023-02-03 | 四川省产品质量监督检验检测院 | Preparation method of hollow PEDOT (PEDOT-PSS) fiber |
| CN116084059A (en) * | 2023-01-12 | 2023-05-09 | 大连理工大学 | Biomass/carbon nano tube wet electric fiber based on sheath-core structure, preparation method and application |
| CN116289186A (en) * | 2023-03-01 | 2023-06-23 | 四川大学 | Stretchable conductive fiber and preparation method thereof |
| CN117552126A (en) * | 2023-11-14 | 2024-02-13 | 安徽农业大学 | Double-conductive-network metal gel conductive fiber and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968023A (en) * | 2017-05-05 | 2017-07-21 | 郑州大学 | Conducting polymer composite fibre with skin-core structure and preparation method thereof |
| CN107287684A (en) * | 2017-05-31 | 2017-10-24 | 华南理工大学 | A kind of high highly sensitive quick sensing fiber of flexible force of stretching and preparation method thereof |
| CN111620667A (en) * | 2020-04-22 | 2020-09-04 | 佛山湘潭大学绿色智造研究院 | Aerogel fiber, preparation method and application thereof |
-
2021
- 2021-03-05 CN CN202110245874.3A patent/CN112853544A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968023A (en) * | 2017-05-05 | 2017-07-21 | 郑州大学 | Conducting polymer composite fibre with skin-core structure and preparation method thereof |
| CN107287684A (en) * | 2017-05-31 | 2017-10-24 | 华南理工大学 | A kind of high highly sensitive quick sensing fiber of flexible force of stretching and preparation method thereof |
| CN111620667A (en) * | 2020-04-22 | 2020-09-04 | 佛山湘潭大学绿色智造研究院 | Aerogel fiber, preparation method and application thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075707A (en) * | 2021-10-26 | 2022-02-22 | 西安理工大学 | Preparation method of flexible wet-spun piezoelectric-conductive core-spun yarn |
| CN114395813A (en) * | 2022-01-13 | 2022-04-26 | 东华大学 | Preparation method of recyclable hollow SBS fiber |
| CN115467035A (en) * | 2022-09-07 | 2022-12-13 | 五邑大学 | Conductive yarn and preparation method thereof |
| CN115679468A (en) * | 2022-10-24 | 2023-02-03 | 四川省产品质量监督检验检测院 | Preparation method of hollow PEDOT (PEDOT-PSS) fiber |
| CN116084059A (en) * | 2023-01-12 | 2023-05-09 | 大连理工大学 | Biomass/carbon nano tube wet electric fiber based on sheath-core structure, preparation method and application |
| CN116289186A (en) * | 2023-03-01 | 2023-06-23 | 四川大学 | Stretchable conductive fiber and preparation method thereof |
| CN116289186B (en) * | 2023-03-01 | 2024-03-08 | 四川大学 | Stretchable conductive fiber and preparation method thereof |
| CN117552126A (en) * | 2023-11-14 | 2024-02-13 | 安徽农业大学 | Double-conductive-network metal gel conductive fiber and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112853544A (en) | Flexible stretchable conductive fiber for wearable equipment and preparation method thereof | |
| CN112252032B (en) | Flexible elastomer fiber membrane with crimp structure and preparation and application thereof | |
| CN107574493B (en) | Flexible tensile strain sensor of spiral winding structure based on electrospinning | |
| CN109431460B (en) | Flexible high-flexibility nanofiber core-spun yarn stress sensor with fold structure and preparation method thereof | |
| CN109137105B (en) | Flexible stretchable multifunctional sensor based on graphene nanofiber yarn and preparation method thereof | |
| CN111041820B (en) | High-conductivity-stability super-elastic yarn and preparation method and application thereof | |
| CN110359128B (en) | Fiber material, fiber gel, stretchable conductive composite fiber with superelasticity and frost resistance and preparation method thereof | |
| CN107988645A (en) | The preparation method of super-elasticity conductive fiber and super-elasticity threadiness ultracapacitor | |
| CN112680966B (en) | Composite fiber and preparation method and application thereof | |
| CN107195894A (en) | A kind of metal carbon nano-fiber composite material and its preparation method and application | |
| CN109341736B (en) | Flexible wearable strain sensor and preparation method thereof | |
| CN111944167B (en) | Conductive hydrogel and preparation method and application thereof | |
| CN107993854B (en) | Core-sheath type flexible graphene fiber supercapacitor, and preparation method and system thereof | |
| CN108193501A (en) | A kind of conductive shapes memory membrane, preparation method and its electric drive method | |
| CN110904534A (en) | Flexible conductive fiber based on styrene-butadiene-styrene block copolymer/silver nanowire and preparation method thereof | |
| CN114703555A (en) | One-step forming batch preparation method of core-shell structure liquid metal conductive fiber | |
| CN113089126A (en) | Conductive network remodeling method based on SBS conductive fiber, conductive composite fiber prepared by using method and preparation method thereof | |
| CN113838680A (en) | Wearable full-flexible solid electrochromic supercapacitor and manufacturing method thereof | |
| Yadav et al. | Internally coated highly conductive and stretchable AgNW-PU hollow fibers | |
| CN110164706A (en) | A kind of preparation method of bacteria cellulose-compound microfibre of carbon nano-tube/poly aniline and micro super capacitor | |
| CN113322667A (en) | Preparation method of silver nanowire-MXene super-elastic intelligent conductive fiber | |
| CN111312433B (en) | Fiber composite material conductive film with interface interlocking structure and preparation method thereof | |
| CN113106570A (en) | Composite electrochromic material and preparation method and application thereof | |
| CN108071007B (en) | Method for preparing silver nanowire and graphene-based calcium alginate composite conductive fiber | |
| CN112216437A (en) | Composite flexible wire based on liquid metal and cotton thread and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |