JP6770493B2 - Conductive polymer electrode and method for manufacturing conductive polymer electrode - Google Patents

Description

The present invention relates to a conductive polymer electrode and a method for manufacturing the conductive polymer electrode.

Bioelectrodes are used for the purpose of stably and efficiently acquiring weak biological signals in the body. In order to efficiently acquire biological signals, it is necessary to reduce the combined resistance between the biological body and the biological electrode. Synthetic resistance is greatly affected by the resistance component of the skin, especially the stratum corneum of the epidermis. Reducing the resistance of the stratum corneum is extremely important for bioelectrodes, as the stratum corneum of the epidermis exhibits insulating properties, especially in the dry state. In addition, the surface of the skin is usually uneven, and the skin is deformed or vibrated with body movement. Therefore, in order to reduce the synthetic resistance, it is also important that the electrode surface comes into contact with the skin at as many points as possible and in a wide area to stabilize the contact state between the skin and the bioelectrode.

Patent Document 1 discloses a conductive polymer electrode in which a fiber sheet made of ultrafine fibers such as polyester nanofibers is impregnated with PEDOT-PSS as a conductive polymer and immobilized as a bioelectrode. The conductive polymer electrode has excellent moisturizing properties and easily retains water in the stratum corneum in a stable manner. Further, since it is excellent in flexibility, the electrode and the skin are in multi-point contact, and the adhesion is excellent, and the combined resistance between the electrode and the skin is reduced.

International Publication No. 2013/073763

When the conductive polymer electrode is used as a bioelectrode, particularly a wearable electrode attached to clothes or the like, it is expected to be used for a long time. Therefore, it is required to further reduce the discomfort given to the person to be measured by the conductive polymer electrode as in Patent Document 1.

An object of the present invention is to provide a conductive polymer electrode having excellent adhesion to skin and the like and reducing discomfort during use, and a method for producing the conductive polymer electrode.

The conductive polymer electrode of the present invention is immobilized in a state where the fiber sheet is impregnated with a conductive composition containing a thermosetting resin or a photocurable resin and a conductive polymer, and at least one surface thereof. Consists of a press-formed body having a smooth surface. Since at least one surface of the conductive polymer electrode is a smooth surface, the contact with the skin or the like becomes a multi-point contact, and the adhesion is excellent, and the discomfort when the conductive polymer electrode is brought into contact with the skin or the like is reduced.

In the method for producing a conductive polymer electrode of the present invention, a fiber sheet is impregnated with a thermosetting resin or a conductive composition containing a photocurable resin and a conductive polymer to obtain an impregnated sheet, and then the impregnated sheet is obtained. This is a method of immobilizing the conductive polymer on the fiber sheet while pressing the impregnated sheet. As a result, a conductive polymer electrode can be obtained in which at least one surface is a smooth surface, the contact with the skin or the like is multipoint contact, the adhesion is excellent, and the discomfort during use is reduced.

In the method for producing a conductive polymer electrode of the present invention, the thermosetting resin is cured to immobilize the conductive polymer while pressing the impregnated sheet with at least a pair of rollers including a heating roller. Is preferable. This makes it easy to smooth at least one surface of the conductive polymer electrode.

In the method for producing a conductive polymer electrode of the present invention, the impregnated sheet is pressed with at least a pair of rollers and irradiated with light to cure the photocurable resin and immobilize the conductive polymer. Is also preferable. This makes it easy to smooth at least one surface of the conductive polymer electrode.

The conductive polymer electrode of the present invention has excellent adhesion to the skin and the like, and the discomfort during use is reduced.
According to the method for producing a conductive polymer electrode of the present invention, it is possible to obtain a conductive polymer electrode having excellent adhesion to the skin or the like and having less discomfort during use.

It is sectional drawing which showed an example of the conductive polymer electrode of this invention. It is sectional drawing which showed an example of the conductive polymer electrode of this invention. It is sectional drawing which showed one step of the manufacturing method of the conductive polymer electrode of this invention. It is sectional drawing which showed one step of the manufacturing method of the conductive polymer electrode of this invention.

[Conductive polymer electrode]
The conductive polymer electrode of the present invention is immobilized in a state where the fiber sheet is impregnated with a conductive composition containing a thermosetting resin or a photocurable resin and a conductive polymer, and at least one surface thereof. Consists of a press-formed body having a smooth surface. In the conductive polymer electrode of the present invention, only one surface in the thickness direction may be a smooth surface, the other surface may be a non-smooth surface, or both surfaces may be smooth surfaces.

Hereinafter, the conductive polymer electrode of the present invention will be described with reference to an example. It should be noted that the dimensions and the like of the figures exemplified in the following description are examples, and the present invention is not necessarily limited to them, and the present invention can be appropriately modified without changing the gist thereof. ..

As shown in FIG. 1, the conductive polymer electrode 1 of the present embodiment is immobilized by impregnating a fiber sheet 10 made of fibers 12 with a conductive composition 14 containing a conductive polymer. It is a formed press-formed body.
The plan-view shape and size of the conductive polymer electrode 1 are not particularly limited, and can be appropriately designed according to the application.

The fibers 12 forming the fiber sheet 10 are not particularly limited, and synthetic fibers, vegetable fibers, and animal fibers can be exemplified. The fiber 12 forming the fiber sheet 10 may be one type or two or more types.

Examples of synthetic fibers include nylon fibers, polyester fibers, acrylic fibers, aramid fibers, polyurethane fibers, and carbon fibers.
Examples of vegetable fibers include cotton, hemp, and jute.
Examples of animal fibers include silk, wool, collagen, and elastic fibers constituting animal tissues.

The diameter (thickness) of the fiber 12 is not particularly limited and can be appropriately selected depending on the intended use, and can be, for example, 0.1 μm to 5 mm. When the conductive polymer electrode 1 is used as the bioelectrode, the diameter of the fiber 12 is preferably 1 μm to 1000 μm.
The length of the fiber 12 is not particularly limited and can be appropriately selected depending on the intended use, for example, 1 mm to 100 m.

The form of the fiber sheet 10 is not particularly limited, and examples thereof include fabrics and bands. The fabric may be a woven fabric (fabric) or a non-woven fabric.
The thickness of the fiber sheet 10 is not particularly limited and can be appropriately selected depending on the intended use, and can be, for example, 1 μm to 100 mm.

The conductive composition 14 contains a conductive polymer and a binder resin. In the conductive polymer electrode 1, the conductive polymer is adhered to the fiber sheet 10 with a binder resin and fixed. As a result, the conductive polymer can be firmly fixed to the fiber sheet, and wear resistance, peel resistance, water resistance, chemical resistance and mechanical strength are improved.

The conductive polymer is not particularly limited, and polythiophene-based polymers such as PEDOT (poly (3,4-ethylenedioxythiophene)), polypyrrole, polyaniline, polyacetylene, polyparaphenylene, polyparaphenylene vinylene, etc. Examples thereof include polyfluorene and the like. As the conductive polymer, one type may be used alone, or two or more types may be used in combination.

The conductive polymer may contain a dopant agent.
The dopant agent is not particularly limited, and examples of the electron acceptor include halogens such as bromine and iodine, Lewis acids such as PF ₅ , BF ₃ , SO ₃ , and protonic acids such as H ₂ SO ₄ , HClO _4. Can be done. Examples of the polymer dopant include polystyrene sulfonic acid (PSS) and the like. Examples of the electron donor include alkali metals and alkaline earth metals.

As the conductive polymer, PEDOT-PSS is preferable because it is excellent in hydrophilicity and flexibility. By using PEDOT-PSS, a conductive polymer electrode having excellent moisturizing property that stably retains water in the stratum corneum on the skin surface and excellent adhesion to the skin etc. when used as a bioelectrode can be obtained. It becomes easy to be.

The molecular weight of the conductive polymer is not particularly limited, and for example, the molecular weight can be in the range of several thousand to several hundred thousand. The styrene-equivalent polymerization average molecular weight (Mw) of the conductive polymer is not particularly limited, and can be, for example, 1000 to 900,000, 3000 to 450,000, or 5000 to 50000.

The binder resin is a thermosetting resin or a photocurable resin. The thermosetting resin or photocurable resin in the conductive polymer electrode exists in a cured state.
Examples of the thermosetting resin include phenol resin, urea resin, melamine resin, unsaturated polyester resin, epoxy resin, and silicon resin. As the thermosetting resin, one type may be used alone, or two or more types may be used in combination.
Examples of the photocurable resin include an epoxy acrylate type, an acrylic epoxy cationic polymerization type, and a photosensitive polyimide. As the photocurable resin, one type may be used alone, or two or more types may be used in combination.

The amount of the conductive composition 14 impregnated in the fiber sheet 10 is preferably 0.01 ml to 10 ml, more preferably 0.1 ml to 1 ml, with respect to the unit area per 1 cm ^{2 of the} fiber sheet 10. When the impregnation amount of the conductive composition 14 is at least the lower limit of the above range, excellent conductivity can be easily obtained. When the impregnation amount of the conductive composition 14 is not more than the upper limit of the above range, excellent air permeability and texture can be easily obtained.

The content of the conductive polymer in the conductive composition is preferably 0.1 to 10% by mass, more preferably 0.5 to 2% by mass, based on the total mass of the conductive composition. When the content of the conductive polymer is at least the lower limit of the above range, sufficient conductivity can be easily obtained. When the content of the conductive polymer is not more than the upper limit of the above range, the content of the resin binder can be relatively increased, the detachment of the conductive polymer is easily suppressed, and the durability is improved. ..

The content of the resin binder in the conductive composition is preferably 0.1 to 10% by mass, more preferably 1 to 4% by mass, based on the total mass of the conductive composition. When the content of the resin binder is at least the lower limit of the above range, the conductive polymer is likely to be suppressed from falling off, and the durability is improved. When the content of the resin binder is not more than the upper limit of the above range, the content of the conductive polymer can be relatively increased, and the conductivity is improved.

The total content of the conductive polymer and the binder resin in the conductive composition is preferably 1 to 100% by mass, more preferably 10 to 100% by mass, and 25 to 50% by mass with respect to the total mass of the conductive composition. 100% by mass is more preferable. When the total content of the conductive polymer and the binder resin is at least the lower limit of the above range, durability and conductivity are improved.

The mass ratio of the binder resin to the conductive polymer in the conductive composition is preferably 1: 0.5 to 1: 5, more preferably 1: 1 to 1: 2. When the mass ratio is within the above range, it is easy to achieve both excellent durability and conductivity.

The conductive composition 14 may contain components other than the conductive polymer and the binder resin, if necessary. Examples of other components include additives such as glycerol, sorbitol, polyethylene glycol-polypropylene glycol copolymer, ethylene glycol, sphingosine, and phosphatidylcholine. When these additives are used, the wettability, flexibility, and affinity with the skin when used as a bioelectrode are improved. As the additive, one type may be used alone, or two or more types may be used in combination.

As the additive, a surfactant, alcohol, natural polysaccharide, sugar alcohol, acrylic resin and the like can also be used.
Examples of the surfactant include a cationic surfactant, an anionic surfactant, and a nonionic surfactant. As the surfactant, one type may be used alone, or two or more types may be used in combination.

Examples of the cationic surfactant include a quaternary alkylammonium salt and an alkylpyridinium halide.
Examples of the anionic surfactant include alkyl sulfates, alkylbenzene sulfonates, alkyl sulfosuccinates, and fatty acid salts.
Examples of the nonionic surfactant include polyoxyethylene and polyoxyethylene alkyl ether.

The alcohol may be a monohydric alcohol or a polyhydric alcohol. As the alcohol, one type may be used alone, or two or more types may be used in combination.
Examples of the monohydric alcohol include methanol, ethanol, propyl alcohol, isopropyl alcohol, and butanol.
Examples of polyhydric alcohols include glycols such as ethylene glycol, chain polyhydric alcohols such as glycerin, cyclic polyhydric alcohols such as glucose and sculose, and polymer polyhydric alcohols such as polyethylene glycol and polyvinyl alcohol, polyethylene glycol, and polypropylene glycol copolymers. Alcohol can be exemplified.

Examples of natural polysaccharides include chitosan, chitin, glucose, and aminoglycan.
Examples of sugar alcohols include sorbitol, xylitol, and erythritol.
Examples of the acrylic resin include polyacrylate and polymethylmethacrylate.

In the conductive polymer electrode 1 made of a press-molded body, the first surface 1a is a smooth surface. The smooth surface of the conductive polymer electrode 1 is formed by press working. The smoothed first surface 1a of the conductive polymer electrode 1 is used as a contact surface for contacting the skin or the like. The second surface 1b of the conductive polymer electrode 1 is a non-smooth surface.

In the conductive polymer electrode 1, the voids between the fibers 12 are compressed in the portion on the first surface 1a side by press working, and are further filled with the conductive composition and smoothed. Therefore, the contact with the skin or the like becomes multi-point contact, and the adhesion is excellent, and the discomfort when the contact with the skin or the like is reduced. Further, when the first surface 1a is smoothed, the portion of the conductive polymer electrode 1 on the first surface 1a side is densified, so that the conductivity is excellent, and even a weak biological signal is obtained. It can be acquired efficiently.

The arithmetic average roughness Ra of the smooth surface of the conductive polymer electrode is preferably 0.2 to 25 μm, more preferably 0.4 to 12.5 μm, and even more preferably 0.8 to 6.3 μm. When Ra of the smooth surface is not more than the upper limit value of the above range, the adhesion to the skin or the like is improved, and the discomfort during use is likely to be reduced.
The arithmetic mean roughness Ra of the smooth surface is measured according to JIS B 0601: 2001.

The surface resistance of the smooth surface side portion of the conductive polymer electrode is preferably 100 KΩ / cm or less, more preferably 10 KΩ / cm or less, and even more preferably 1 KΩ / cm or less. When the surface resistance is not more than the upper limit value in the above range, it is easy to acquire a biological signal having an excellent SN ratio.
The surface resistance of the portion of the conductive polymer electrode on the smooth surface side is a value measured by the two-terminal constant voltage method with respect to the smooth surface of the conductive polymer electrode.

In the conductive polymer electrode 1 of this example, the conductive composition 14 is unevenly distributed so that the density of the conductive composition 14 in the thickness direction is higher on the first surface 1a side than on the second surface 1b side. It is fixed to the sheet 10. That is, in the conductive polymer electrode 1, the conductive polymers are unevenly distributed so that the density of the conductive polymer in the thickness direction is higher on the first surface 1a side than on the second surface 1b side, and the fiber sheet 10 It is fixed to. As described above, in the conductive polymer electrode of the present invention, it is preferable that the conductive polymer is unevenly distributed on the smooth surface side portion which is the contact surface to be brought into contact with the skin or the like.

Due to the uneven distribution of the conductive composition 14, the portion of the conductive polymer electrode 1 on the first surface 1a side is smoothed and densified, while the portion of the fiber sheet 10 on the second surface 1b side is smoothed. Each fiber 12 is not fixed in the compressed state and has a low density. In the portion of the conductive polymer electrode 1 on the second surface 1b side, each fiber 12 in which the conductive composition 14 is attached to the surface exists in a state where voids are present between the fibers 12. As a result, the conductive polymer electrode 1 is excellent in adhesion to the skin and the like, conductivity, breathability, and texture.

The conductive polymer may be unevenly distributed so that the density changes stepwise in the thickness direction of the fiber sheet 10, and the density increases from the first surface a to the second surface 1b of the conductive polymer electrode 1. May be unevenly distributed so that In particular, from the viewpoint of maintaining the texture while reducing the contact resistance of the bioelectrode, the conductive polymer is unevenly distributed so that the density decreases from the first surface a to the second surface 1b of the conductive polymer electrode 1. It is preferable that a density gradient is formed.

As described above, the conductive polymer electrode of the present invention is made of a press-molded body, and at least one surface thereof is a smooth surface. As a result, the contact with the skin or the like becomes a multi-point contact, and the adhesion is excellent. Therefore, when used as a bioelectrode, the combined resistance between the electrode and the skin can be reduced. In addition, since the discomfort when it comes into contact with the skin or the like is reduced, it is less likely to feel uncomfortable even when it is used for a long period of time such as a wearable electrode.

Examples of applications of the conductive polymer electrode of the present invention include bioelectrodes, electrodes for percutaneous drug delivery systems, antistatic coats, touch panel operating tools, and electrodes for various sensors. The conductive polymer electrode of the present invention can secure a stable contact state with respect to the skin where deformation and vibration occur, reduce the combined resistance between the skin and the electrode, and reduce the discomfort when the electrode is attached. It is effective as a bioelectrode, especially a wearable electrode used for long-term measurement of biological signals.

The conductive polymer electrode of the present invention is not limited to the above-mentioned conductive polymer electrode 1.
Although only one surface of the conductive polymer electrode 1 is a smooth surface, the conductive polymer electrode of the present invention may have both surfaces smooth surfaces. For example, the conductive polymer electrode 2 illustrated in FIG. 2 may be used. The conductive polymer electrode 2 is the same as the conductive polymer electrode 1 except that the conductive composition 14 is not unevenly distributed and both the first surface 2a and the second surface 2b are smooth surfaces. is there.

[Manufacturing method of conductive polymer electrode]
In the method for producing a conductive polymer electrode of the present invention, a fiber sheet is impregnated with a thermosetting resin or a conductive composition containing a photocurable resin and a conductive polymer to obtain an impregnated sheet, and then the impregnated sheet is obtained. This is a method of immobilizing the conductive polymer on the fiber sheet while pressing the impregnated sheet. According to the method for producing a conductive polymer electrode of the present invention, the above-mentioned conductive polymer electrode of the present invention can be produced.
Hereinafter, the method for producing the conductive polymer electrode 1 described above will be described as an example of the method for producing the conductive polymer electrode of the present invention.

In the production of the conductive polymer electrode 1, the fiber sheet 10 is first impregnated with the conductive composition 14 to obtain an impregnated sheet.
The impregnating method of the conductive composition 14 is not particularly limited, and a method of impregnating the fiber sheet 10 with the conductive composition 14 by a method such as coating, printing, dipping, spraying, or dropping can be exemplified.

When the fiber sheet 10 is impregnated with the conductive composition 14, a mixed solution of water, water and alcohol (ethanol, methanol, etc.), a solvent such as dimethyl sulfoxide, acetone, or the like may be used, if necessary. As the solvent, one type may be used alone, or two or more types may be used in combination.
The conductivity, air permeability, and texture of the conductive polymer electrode 1 to be produced can also be adjusted by the amount of the solvent used and the amount of the conductive composition 14 added when the fiber sheet 10 is impregnated.

When a solvent is used, the amount of the solvent used is preferably 50% by mass to 99% by mass, more preferably 80% by mass to 90% by mass, based on the total mass of the reagent containing the conductive composition 14. When the amount of the solvent used is not less than the lower limit of the above range, the aggregation of the conductive polymer is suppressed. When the amount of the solvent used is not more than the upper limit of the above range, the content of the conductive polymer can be relatively increased, and the conductivity is improved.

The amount of the conductive composition 14 added when the fiber sheet 10 is impregnated is preferably 0.01 ml to 10 ml, more preferably 0.1 ml to 1 ml, with respect to the unit area per 1 cm ^{2 of the} fiber sheet 10. When the input amount of the conductive composition 14 is not less than the lower limit of the above range, excellent conductivity can be easily obtained. When the amount of the conductive composition 14 added is not more than the upper limit of the above range, excellent air permeability and texture can be easily obtained.

After impregnating the fiber sheet 10 with the conductive composition 14, the conductive composition 14 is fixed to the fiber sheet 10 while the impregnated sheet is pressed. When a thermosetting resin is used as the binder resin, for example, a method using a heating press machine can be mentioned.
Specifically, for example, as shown in FIG. 3, a heating roller 30 having a heating mechanism 31 while running a long impregnated sheet 20 in which a fiber sheet 10 is impregnated with a conductive composition 14 in one direction is used. It is continuously sandwiched by a cooling roller 40 having a cooling mechanism 41 and pressed in the thickness direction. The heating roller 30 is arranged on the surface side of the impregnated sheet 20 which is the first surface 1a of the conductive polymer electrode 1, and the cooling roller is arranged on the opposite surface side. In this way, while pressing the impregnated sheet 20 in the thickness direction, the thermosetting resin is cured by heating from one direction on the surface side of the conductive polymer electrode 1 which is the first surface 1a.

For example, when the conductive composition is immobilized by warm air heating without pressing the impregnated sheet 20, the conductive polymer is uniformly distributed on the surface of the fibers, and the voids between the fibers in the fiber sheet are also formed. It does not change significantly and the electrode surface is not smoothed.
On the other hand, by heating the impregnated sheet while pressing it, each fiber of the fiber sheet is compressed in the thickness direction, the voids between the fibers are narrowed, and the impregnated sheet is thermoset in a state of being filled with the conductive composition. The sex resin cures. Therefore, a conductive polymer electrode having a smoothed surface can be obtained.

In this example, since the impregnated sheet 20 is heated from one direction in the thickness direction, a thermal gradient is formed in the thickness direction of the fiber sheet 10, and the thermal gradient causes more thermosetting resin to be faster on the heating side. It cures and faster and more conductive polymers are unevenly distributed and immobilized. Therefore, the first surface 1a side of the obtained conductive polymer electrode 1 is smoothed by being filled with the conductive composition while the gaps between the fibers 12 are narrowed. On the other hand, on the side opposite to the heating side (non-heating side), the curing of the thermosetting resin is slower than that on the heating side, and the immobilization of the conductive polymer is delayed. Therefore, the density of the conductive polymer is low on the second surface 1b side of the obtained conductive polymer electrode 1, and the voids between the fibers 12 are not sufficiently filled, so that the conductive polymer electrode 1 is not smoothed. As described above, the conductive polymer electrode 1 in which the first surface 1a is a smooth surface and the second surface 1b is a non-smooth surface can be obtained.

The heating mechanism 31 is not particularly limited, and a known heater can be used.
The cooling mechanism 41 is not particularly limited, and examples thereof include a mechanism for circulating and cooling cooling water, a mechanism for dissipating heat by a radiator type, and a mechanism for cooling by blowing air.
The rolls used for press working may be a pair or two or more.

Further, as shown in FIG. 4, a separator film 50 may be inserted between the pressed surface of the heating roller 30 and the impregnated sheet 20 and between the pressed surface of the cooling roller 40 and the impregnated sheet 20. By inserting the separator film 50, it becomes easy to prevent the conductive composition from adhering to the press surface of the heating roller 30 and the press surface of the cooling roller 40.
The separator film 50 may be any one having heat resistance and peelability, and examples thereof include a polyimide sheet and paper or cloth whose surface is treated with silicone.
Instead of the cooling roller 40, a roller having no cooling mechanism may be used to dissipate heat naturally.

In this case, the adhesion of the conductive polymer electrode 1 to the skin and the like, the effect of reducing discomfort, the conductivity, the air permeability and the texture can be adjusted by the press pressure, the heating temperature and the heating amount.
The press pressure on the impregnated sheet 20 is preferably 0.01 to 1000 kPs, more preferably 0.1 to 100 kPs, and even more preferably 1 to 50 kPs. When the press pressure is at least the lower limit of the above range, it is easy to obtain a conductive polymer electrode having excellent adhesion to the skin or the like and reduced discomfort during use. When the press pressure is not more than the upper limit of the above range, it is easy to prevent deterioration of the texture and surface shape of the fabric.

The heating temperature is preferably 50 to 200 ° C, more preferably 100 to 150 ° C. When the heating temperature is equal to or higher than the lower limit of the above range, the fixation of the conductive polymer is stabilized. When the heating temperature is not more than the upper limit of the above range, deterioration of the conductive polymer due to heat can be prevented.

When a photocurable resin is used as the binder resin, for example, while pressing the impregnated sheet 20 with a press machine, UV light or the like is irradiated from one direction on the surface side of the conductive polymer electrode 1 to be the first surface 1a. Cure the photocurable resin. As a result, more photocurable resins are cured faster on the light irradiation side, and more conductive polymers are unevenly distributed and immobilized faster. Therefore, the first surface 1a side of the obtained conductive polymer electrode 1 is filled and smoothed while the gaps between the fibers 12 are narrowed. On the other hand, on the side opposite to the light irradiation side (non-light irradiation side), the curing of the photocurable resin is slower than that on the light irradiation side, and the immobilization of the conductive polymer is delayed, so that the density becomes low and smoothing is not performed.

Further, for immobilization of the conductive polymer, a method of electrophoretically collecting the conductive polymer at a specific electrode (for example, a cathode) to polymerize and immobilize, an electrode shape, and an adjustment of the conductive composition. Therefore, an electrolytic polymerization method may be combined in which the current density on the surface of the fiber sheet is controlled to promote immobilization.

In the case of producing the conductive polymer electrode 2, for example, after impregnation of the conductive composition, a heating roller is used instead of the cooling roller 40 in FIG. 3 or 4, and the impregnated sheet 20 is pressed in the thickness direction. While doing so, a method of heating from both sides to cure the thermosetting resin can be adopted. As a result, the conductive polymer electrode 2 is obtained in which the conductive composition is not unevenly distributed in the thickness direction and both surfaces are smoothed.

When a photocurable resin is used, for example, while pressing the impregnated sheet 20 with a press machine, the photocurable resin is cured by irradiating UV light or the like from both sides to cure the conductive polymer electrode. 2 can be obtained.

According to the method for producing a conductive polymer electrode of the present invention described above, at least one surface is smoothed, the adhesion to the skin or the like is excellent, and the discomfort is sufficiently reduced during long-term use. A conductive polymer electrode can be obtained.

The method for producing the conductive polymer electrode of the present invention is not limited to the above-mentioned method. For example, the method of pressing the impregnated sheet is not limited to the method using a roll, and may be, for example, a method using a press machine provided with a pair of plates.

1, 2 ... Conductive polymer electrodes, 1a, 2a ... 1st surface, 1b, 2b ... 2nd surface, 10 ... Fiber sheet, 12 ... Fiber, 14 ... Conductive composition, 20 ... Impregnated sheet, 30 ... Heating Roller, 31 ... heating mechanism, 40 ... cooling roller, 41 ... cooling mechanism, 50 ... separator film.

Claims (7)

The fiber sheet, is fixed in a state where a conductive composition containing a thermosetting resin or a photocurable resin and a conductive polymer is impregnated, is either One hand surface of the press molded product is smooth surface Do Ri, the conductive polymer density toward the other surface from the one surface to form a ubiquitously density gradient so as to become smaller, the conductive polymer electrodes. The conductive polymer electrode according to claim 1, wherein the density of the conductive composition on one surface is higher than the density of the conductive composition on the other surface. After impregnating the fiber sheet with a thermosetting resin or a conductive composition containing a photocurable resin and a conductive polymer to obtain an impregnated sheet,
A method for producing a conductive polymer electrode, which immobilizes the conductive polymer on the fiber sheet while pressing the impregnated sheet. The production of the conductive polymer electrode according to claim 3 , wherein the thermosetting resin is cured to immobilize the conductive polymer while pressing the impregnated sheet with at least a pair of rollers including a heating roller. Method. The method for producing a conductive polymer electrode according to claim 3 , wherein the impregnated sheet is pressed and irradiated with light using at least a pair of rollers to cure the photocurable resin and immobilize the conductive polymer. .. The fiber sheet, after obtaining the impregnated sheet by impregnating a conductive composition containing a thermosetting resins and a conductive polymer,
A conductive polymer electrode that cures the thermosetting resin and immobilizes the conductive polymer on the fiber sheet while pressing the impregnated sheet with a pair of rollers, one of which is a heating roller . Production method. The fiber sheet, after obtaining the impregnated sheet by impregnating a conductive composition comprising a photocurable resin and a conductive polymer,
While pressing the impregnated sheet with a pair of rollers , light is irradiated from one direction on one surface side of the impregnated sheet to cure the photocurable resin and fix the conductive polymer to the fiber sheet. A method for producing a conductive polymer electrode.

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