WO1997025375A1 - Film de caoutchouc conducteur - Google Patents

Film de caoutchouc conducteur Download PDF

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Publication number
WO1997025375A1
WO1997025375A1 PCT/JP1997/000036 JP9700036W WO9725375A1 WO 1997025375 A1 WO1997025375 A1 WO 1997025375A1 JP 9700036 W JP9700036 W JP 9700036W WO 9725375 A1 WO9725375 A1 WO 9725375A1
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WO
WIPO (PCT)
Prior art keywords
rubber
conductive
weight
parts
film
Prior art date
Application number
PCT/JP1997/000036
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English (en)
Japanese (ja)
Inventor
Koichiro Maeda
Original Assignee
Nippon Zeon Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Zeon Co., Ltd. filed Critical Nippon Zeon Co., Ltd.
Priority to JP52508497A priority Critical patent/JP3451093B2/ja
Publication of WO1997025375A1 publication Critical patent/WO1997025375A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2019/00—Use of rubber not provided for in a single one of main groups B29K2007/00 - B29K2011/00, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive

Definitions

  • the present invention relates to a conductive rubber film useful as various conductive materials, electromagnetic wave shields, electrodes, and the like, particularly to a conductive partition wall material and a conductive rubber film for an electric double layer capacitor.
  • This conductive rubber film has a small volume resistance value and is useful as a material for a conductive partition wall and an electric double layer capacitor.
  • a conductive rubber made of a rubber material and a conductive material is used as a flexible conductive member in various electric and electronic parts.
  • conductive members, antistatic agents, electromagnetic wave shielding materials, electrodes, connectors, sensors, heating elements, and the like are required.
  • An electric double layer capacitor is an electric element comprising a polarizable electrode and an electrolyte, and generally uses an electrolytic solution in which an electrolyte salt is dissolved (for example, Japanese Patent Application Laid-Open No. 49-68254).
  • Electric double layer capacitors have the function of storing electric charge in the electric double layer formed between the electrolyte and the electrodes due to the polarization of the electrodes, and are used as small power sources for semiconductor memory backups. It is also being developed as a large power source for automobiles.
  • Conventionally used electric double layer capacitors are those using an aqueous electrolytic solution as an electrolytic solution, usually a sulfuric acid aqueous solution of about 25 to 50% (Japanese Patent Application Laid-Open No. 62-268119). JP-A-63-213139, JP-A-2-174210, etc.) and those using an organic solvent-based electrolyte (JP-A-49-6825) And Japanese Patent Application Laid-Open No. 7-86696).
  • a capacitor using an organic solvent-based electrolyte has a higher output voltage, but has the disadvantage that the ionic conductivity of the electrolyte is low, so that the internal resistance increases and the output current decreases.
  • a capacitor using an aqueous electrolyte has a low output voltage, but has a low internal resistance and a large output current due to the high ionic conductivity of the electrolyte. Furthermore, capacitors using organic solvent-based electrolytes are flammable, and the development of an electric double layer capacitor with an even higher output using an aqueous electrolyte is desired from the viewpoint of safety.
  • a rubber film containing a conductive material is generally used (Japanese Patent Application Laid-Open Nos. 2-174210, 4-240708, and JP-A-4-240708). Hei 5—29992296, etc.).
  • These conductive rubber films which have been conventionally used, have a volume resistance of about 8 to 500 ⁇ cm in the direction perpendicular to the plane, making it difficult to increase the output of the capacitor. .
  • these conductive rubber films have poor acid resistance, and may be eroded by an acidic aqueous electrolyte solution over a long period of use, resulting in reduced functions or leakage.
  • An object of the present invention is to provide a conductive member used for a conductive partition wall for electric and electronic parts, and a conductive rubber film having a low resistance value used for an antistatic agent and the like.
  • An object of the present invention is to provide a conductive rubber film suitable for a capacitor.
  • the present inventors have made intensive efforts to find that the volume resistance in the direction perpendicular to the surface of a specific rubber film containing conductive carbon is extremely low, and have completed the present invention.
  • the present invention comprises 100 parts by weight of a rubber component having an iodine value of 30 or less and 5 to 100 parts by weight of conductive carbon, and has a volume resistance in a direction perpendicular to the film surface.
  • a conductive rubber film having a value of 0.1-5 ⁇ cm is provided.
  • the rubber component of the conductive rubber used in the present invention comprises a rubber having an iodine value of 30 or less, preferably 20 or less. If the iodine value of the rubber is too high, when the conductive rubber film is used as the conductive partition wall of the electric double layer capacitor, it may react with a commonly used acidic electrolytic solution to deteriorate and become inoperable.
  • a tensile elongation at break of rubber is preferably rather is 50% or more, more preferably 1 0 0% or more, tensile strength at break is preferably 2 0 kgf / cm 2 or more, more preferably 4 0 kgf / cm 2 or more And the upper limit is preferably 100 kgf Z cm 2 or less.
  • the tensile elongation at break is too small, the mechanical strength of the obtained conductive rubber film is insufficient. If the tensile strength is too low, when the conductive partition wall is used, it is easily broken by the gasket of the basic cell, and it is difficult to obtain a rubber having a tensile strength of 100 kgf / cm 2 or more.
  • rubbers containing no double bonds in the main chain such as olefin rubbers such as ethylene-propylene copolymer rubber (so-called EPM); tertiary gens such as ethylene, propylene, and dicyclopentadiene Rubbers having substantially no double bond in the main chain and an iodine value of 30 or less, preferably 20 or less; such as copolymer rubber (so-called EPDM) and butyl rubber; polybutadiene rubber, polyisoprene rubber, and acrylonitrile.
  • olefin rubbers such as ethylene-propylene copolymer rubber (so-called EPM)
  • tertiary gens such as ethylene, propylene, and dicyclopentadiene Rubbers having substantially no double bond in the main chain and an iodine value of 30 or less, preferably 20 or less
  • EPDM copolymer rubber
  • butyl rubber polybutadiene rubber
  • polyisoprene rubber polyiso
  • Hydrogenated rubber with a large iodine value such as butadiene copolymer rubber or styrene rubber such as styrene-butadiene copolymer rubber, is used to reduce the iodine value to 30 or less, preferably 20 or less.
  • ethylene, propylene, dicyclopentadiene, etc. may be used because they have resistance to an electrolytic solution and have a suitable tensile strength at break and are difficult to be broken by a gasket of a basic cell.
  • Terpolymer rubber of styrene, butyl rubber, acrylonitrile, hydrogenated butadiene copolymer rubber, hydrogenated styrene / butadiene rubber, especially hydrogenated acrylonitrile butadiene copolymer rubber Styrene-butadiene copolymer hydrogenated rubber is preferred.
  • a softening agent such as a paraffinic process oil or a naphthenic process oil or a combination agent such as an antioxidant may be added to the rubber component as long as the effects of the present invention are not impaired.
  • a resin may be added in addition to the rubber and the above-mentioned combination agent to enhance the strength.
  • the resin used is acidic electrolysis Those which are hardly eroded by a liquid are preferable, and examples thereof include an olefin resin such as polyethylene and polypropylene, polyvinyl chloride, and the like. Particularly, polyvinyl chloride having excellent acid resistance is preferable.
  • the compounding ratio is preferably at least 0.1 part by weight, more preferably at least 5 parts by weight, preferably at most 50 parts by weight, more preferably at most 20 parts by weight, based on 100 parts by weight of rubber. If the amount is too small, the strength of the rubber component tends to be insufficient. If the amount is too large, the flexibility of the rubber component is insufficient, and problems such as difficulty in manufacturing an electric double layer capacitor arise.
  • a bridging agent may be added to the rubber component, and the film may be crosslinked after the film formation.
  • the crosslinking agent is not particularly limited, but organic peroxides such as hydroxyketals, hydroperoxides, and dialkylperoxides are preferable.
  • the compounding amount is preferably 0.1 to 100 parts by weight of rubber. 1 to 5 parts by weight 0 s .
  • Conductive carbon contained in the conductive rubber used in the present invention has a specific surface area rather preferably has 2 O m 2 Z g or more, more preferably 5 0 O m 2 / g or more, and preferably 2 0 0 0 m 2 Z g or less. If the specific surface area is too small, the volume resistance value of the conductive rubber increases, which is not preferable. Those having a specific surface area of more than 200 Om 2 / g are difficult to obtain.
  • furnace blacks such as conductive furnace black, super conductive furnace black, and extra conductive furnace black, conductive channel black, and acetylene black.
  • conductive carbon include Continex CF (Continental Carbon, Conductive Furnace Black), Ketjen Black EC (Ketjen Black International, Conductive Furnace Black), Vulcan C (Cabot, Inc.) , Conductive Furnace Black), BLACKPEARLS 2000 (Conductive Furnace Black, manufactured by Cabot Corporation), Denka Acetylene Black (Acetylene Black, manufactured by Denki Kagaku Kogyo Co., Ltd.) and the like can be suitably used.
  • the conductive rubber used in the present invention further includes, for example, flaky natural graphite, graphite toffee fiber, and bonbon whisker, having a primary particle diameter of 1 O nm or more, preferably 20 nm or more, and 100 nm or less. It is also possible to improve the conductivity by using an optional conductive component such as conductive particles, preferably 80 nm or less, in combination.
  • the conductive rubber is based on 100 parts by weight of the rubber component, and more than 5 parts by weight of conductive carbon, preferably not less than 10 parts by weight, more preferably not less than 20 parts by weight, and not more than 100 parts by weight, It is preferably used in an amount of not more than 80 parts by weight, more preferably not more than 70 parts by weight. If the amount of the conductive rubber is too small, the volume resistance of the conductive rubber film is too large, and if it is too large, the strength of the conductive rubber film is insufficient, so that it cannot be used as a conductive partition.
  • the conductive optional component When the conductive optional component is used in combination, 0.1 to 5 parts by weight is preferably added to 100 parts by weight of the rubber component. Since the conductive optional component tends to orient in the direction of the surface of the film, a large amount of the compound causes a problem that the film obtained by casting the conductive rubber becomes electrically non-uniform.
  • a film When a film is manufactured by the casting method described below, it is necessary to knead a rubber component and conductive carbon, and optional conductive components and compounding agents, a resin, and a bridging agent to be added as needed. It is not always necessary to dissolve and disperse them in a solvent when preparing a casting solution. Particularly when a crosslinking agent is blended, it is easy to crosslink when melt-kneaded, and it becomes difficult to produce a film by a casting method. Therefore, it is preferred to blend the crosslinking agent when preparing a solution for casting.
  • the thickness of the conductive rubber film of the present invention is appropriately determined according to the application and the shape.
  • the thickness is preferably at least 0.0 lmm, more preferably at least 0.02 mm, particularly preferably at least 0.02 mm. It is 4 mm or more, preferably 0.2 mm or less, more preferably 0.1 mm or less, and particularly preferably 0.08 mm or less. If it is too thin, it will be difficult to use because of insufficient strength, and if it is too thick, the resistance will increase.
  • the volume resistivity in the direction perpendicular to the film surface of the conductive rubber film of the present invention is 0, 1 ⁇ cm or more, 0.5 ⁇ cm or less, preferably 3 ⁇ cm or less, more preferably 1 ⁇ cm or less. ⁇ cm or less.
  • the conductive rubber film of the present invention is preferably a film produced by a cast method since conductive carbon is uniformly dispersed throughout the film.
  • the conductive carbon tends to orient in the plane direction, so that the volume resistance measured in the plane direction is small, but the volume resistance measured in the direction perpendicular to the plane. May be large.
  • the solvent used in the casting method is a solvent capable of dissolving the rubber component, for example, an aromatic solvent such as benzene, toluene, and xylene, an ether solvent such as tetrahydrofluorene, and a ketone such as acetone, methyl ethyl ketone, and methyl isobutyl ketone.
  • Organic solvents such as solvent-based solvents.
  • the total amount of the rubber component, conductive carbon, and optional conductive components, compounding agents, resins, and cross-linking agents to be added is usually 5 parts by weight or more, preferably 10 parts by weight, based on 100 parts by weight of the organic solvent.
  • the concentration is too low, a sufficiently thick product cannot be obtained. If the concentration is too high, the viscosity of the solution becomes too high and the thickness is not uniform.
  • the prepared solution is cast on a flat surface such as polyethylene terephthalate, Teflon, paper or metal using a bar coater or the like so that the thickness becomes uniform.
  • the cast solution is usually dried at about 30 to 100 ° C. to remove the solvent. However, if the drying temperature is higher than or near the boiling point of the solvent, foaming may occur and the surface may have irregularities, so the drying temperature is determined according to the characteristics of the solvent.
  • cross-linking When cross-linking by blending a cross-linking agent, after removing the solvent sufficiently, it is usually heated at 130 ° C. to 180 ° C. for 5 to 180 minutes, preferably for about 10 to 120 minutes. To crosslink. If the crosslinking temperature is too high, the crosslinking agent may be decomposed before the crosslinking is sufficiently performed, so the crosslinking temperature is also determined according to the properties of the crosslinking agent. The time for crosslinking is not necessarily required immediately after the removal of the solvent. Crosslinking may be performed after assembling the capacitor as in the case where the gasket is bonded to the conductive partition made of the conductive rubber film of the present invention by co-crosslinking to seal the capacitor as described later.
  • Electric double-layer capacitors include not only basic cells, which are the smallest structural units, but also those in which multiple basic cells are connected in series to increase the output voltage, those in parallel to increase the output current, and In some cases, a combination may be included.
  • the basic cell of an electric double layer capacitor has two electrodes placed via a separator, a conductive partition is arranged so as to be in contact with the outside, and an electrolyte is filled, and at least the outside of the conductive partition is It was sealed with a gasket in a partially exposed state. Separators are used to prevent electrical shorts due to contact between the two electrodes. Are used.
  • the electrode is a polarizable electrode that has a high conductivity and does not cause an electrochemical reaction with an electrolytic solution, and is usually made of solid activated carbon. Examples of the solid activated carbon include those obtained by adding a phenol-based or fluorine-based resin to powdered activated carbon to solidify.
  • the electrolyte is an acidic solution and has no volatility, so that a sulfuric acid aqueous solution of about 30 to 50% is usually used.
  • the gasket is not particularly limited as long as it has acid resistance and can prevent electrolyte leakage, and usually has an iodine value of 30 or less, preferably 20 or less, like the rubber used in the present invention. Rubber, for example, butyl rubber is used.
  • the space between the conductive partition and the gasket is adhered and there is no gap through which the electrolyte leaks.
  • a method for bonding the conductive partition and the gasket in addition to a method using an adhesive, a rubber gasket containing a crosslinking agent and a conductive gasket also containing a crosslinking agent are used to bond the gasket to the conductive gasket.
  • a method of co-crosslinking the functional partition is preferred because the process is simple.
  • a conductive rubber film containing a cross-linking agent as a rubber component is used to manufacture a film by a casting method or the like so as not to cross-link, and cut into an appropriate size and shape to form a conductive partition wall.
  • Example 1 The volume resistivity of the film was measured in a direction perpendicular to the surface using a Hioki Denki Co., Ltd. 3220 low resistance meter. The capacity when charged by IV and discharged to 0.8 V was determined from the change in current.
  • Example 1 The volume resistivity of the film was measured in a direction perpendicular to the surface using a Hioki Denki Co., Ltd. 3220 low resistance meter. The capacity when charged by IV and discharged to 0.8 V was determined from the change in current.
  • This slurry was cast on a smooth polyethylene terephthalate film using a bar coater and dried at 80 ° C. for 16 hours to obtain a uniform conductive cast film having a thickness of 27 m. After the negative part of this film was kept at 150 ° C. for 2 hours for crosslinking, the volume resistivity was measured and found to be 0.52 ⁇ cm.
  • the non-crosslinked conductive cast film obtained above was cut into a circle having a diameter of 15 mm to prepare a conductive partition. Also, 8 0 parts by weight of activated carbon having a specific surface area of about 1 7 0 0 m 2 Zg, polytetramethylene full O B Ethylene 1 0 part by weight, acetylene black 1 0 by weight part kneaded and pressed the 2 mm thick sheet And cut into a circle having a diameter of 10 mm to obtain two solid activated carbon electrodes.
  • butyl rubber Nippon Synthetic Rubber Co., Ltd., BUTYL 365, iodine value 25
  • citrus agent Arakawa Chemical Co., Ltd., Tamanol 531, alkylphenol formaldehyde resin
  • the solid activated carbon electrode was inserted into the center hole of the ring-shaped gasket and formed into a disk with a diameter of 15 mm and a thickness of 2 mm.
  • a two-layer separator with a thickness of 25 m and a diameter of 11 mm (Celgard 240 0, manufactured by Tonen Tapyrus Co., Ltd., polypropylene fiber non-woven fabric) was sandwiched so that the cores overlapped, and the two cores were then dug out so that the centers overlapped.
  • a 30% sulfuric acid aqueous solution is placed in a cell surrounded by a gasket and a current collector, and is maintained at 150 ° C for 2 hours while applying pressure so that the liquid does not leak.
  • the units were co-crosslinked to produce a basic cell which was an electric double layer capacitor.
  • the resistance value of the basic cell in which the conductive partition walls were crosslinked was 2.7 ⁇ , and the capacitance was 20 mF.
  • Butyl rubber (Nippon Synthetic Rubber Co., Ltd., BUTYL 365, iodine value 25, tensile elongation at break 300%, tensile strength at break 105 kg f Zcm 2 ) 100 parts by weight, conductive force
  • the non-crosslinked conductive cast film obtained above was cut into a circle having a diameter of 15 mm to obtain a conductive partition of the present invention, and was used in the same manner as in Example 1 except that this was used as a conductive partition. Assembled and crosslinked to produce a basic cell, which is an electric double layer capacitor. The resistance value of this basic cell was 2.0 ⁇ , and the capacitance was 18 mF.
  • This slurry was cast on a smooth polyethylene terephthalate film using a bar coater and dried at 80 ° C. for 16 hours to obtain a uniform conductive cast film having a thickness of 25. After a part of this film was kept at 150 ° C. for 2 hours for crosslinking, the volume resistivity was measured and found to be 0.25 ⁇ cm.
  • the non-crosslinked conductive castle film obtained above was cut into a circle having a diameter of 15 mm to obtain the conductive spacing of the present invention, and was used in the same manner as in Example 1 except that this was used as the conductive spacing. Assembled and crosslinked to produce a basic cell that is an electric double layer capacitor. The resistance value of this basic cell was 2.2 ⁇ , and the capacitance was 28 mF.
  • butyl rubber (BUTYL 365), 20 parts by weight of conductive resin (Ketjen Black EC), and 1.0 part by weight of a crosslinking agent (Tamanol 531) are kneaded to prevent crosslinking.
  • a conductive rubber film with a thickness of 220 m was manufactured by the calendar method. The film was crosslinked by heating at 150 ° C. for 30 minutes, and the volume resistivity was measured to be 5.5 ⁇ cm.
  • the non-crosslinked conductive rubber film produced above was cut into a circle having a diameter of 15 mm, and the assembly was carried out in the same manner as in Example 1 except that this was used as a conductive partition wall.
  • a basic cell was manufactured. The resistance value of this basic cell was 7.2 ⁇ , and the capacitance was 11 mF.
  • Example 2 The film obtained in the same manner as in Example 1 was pressed at a press pressure of 10 kg / cm 2 to 150. C. Heat press was performed for 2 hours to obtain a crosslinked film. After rubbing the film 10 times with a piece of polyester cloth under an atmosphere of room temperature (20 ° C.) and humidity of 56% rh, measurement of a distance at which the sample film starts sucking fresh tobacco ash (ash) Test). The result is a distance of 0 cm, indicating little suction.
  • a film was obtained in the same manner as in Example 4 except that conductive carbon was not used.
  • the ash test result was 5 cm. This film could not be used as an antistatic film.
  • Example 2 On the uncrosslinked film obtained in Example 1, two copper foils each having a thickness of 50 m and a width of 0.5 cm serving as electrodes were placed in parallel at an interval of 1 cm, and sandwiched between the same films. It was heated and pressed at 150 ° C for 2 hours. The pressing pressure was 10 kg / cm 2 . After cooling to room temperature (20 ° C), a voltage of 1 V was applied between the two copper foils, and after 1 minute, the temperature of the film surface in the middle of the electrode reached 40 ° C.
  • This heating element is a small (thin film) and flexible heating element.
  • the resistance is small, there is an advantage that heat is generated at a low voltage.
  • the non-crosslinked conductive cast film obtained above was cut into a circle having a diameter of 15 mm to obtain a conductive partition wall of the present invention. Except that this was used as a conductive partition wall, the same as in Example 1 was performed. Assembled and crosslinked to produce a basic cell, which is an electric double layer capacitor. The resistance value of this basic cell was 3.4 ⁇ and the capacitance was 17 mF.
  • a crosslinking agent manufactured by NOF CORPORATION, Perhexa 3M, 1,1-bis ( (t-butyl peroxy) 1,3,3,5-trimethylcyclohexane) 0.5 part by weight was added, and the mixture was sufficiently stirred to be uniform.
  • This slurry was cast on a smooth polyethylene terephthalate film using a bar coater and dried at 80 ° C for 16 hours to obtain a uniform conductive cast film with a thickness of 28 / zm. . After a part of this film was kept at 150 ° C. for 2 hours for crosslinking, the volume resistivity was measured and found to be 0.22 ⁇ cm.
  • the non-crosslinked conductive cast film obtained above was cut into a circle having a diameter of 15 mm to obtain a conductive partition of the present invention, and was used in the same manner as in Example 1 except that this was used as a conductive partition. Assembled and assembled to produce a basic cell that is an electric double layer capacitor. The resistance value of this basic cell was 2.3 ⁇ , and the capacitance was 22 mF.
  • Hydrogenated styrene / butadiene copolymer rubber (manufactured by Nippon Synthetic Rubber Co., Ltd., DYNARON 1320 P, iodine value 10, tensile elongation at break 100,000% or more, tensile strength at break 40 kgf / cm 2 ) 100 parts by weight , Conductive carbon (Ketjen Black EC, manufactured by Ketjen Black International, specific surface area: about 80 Om 2 / g) 60 parts by weight was added to 500 parts by weight of toluene, and an ultrasonic dispersing machine was used.
  • the non-crosslinked conductive cast film obtained above was cut into a circle having a diameter of 15 mm to obtain a conductive partition wall of the present invention. Except that this was used as a conductive partition wall, the same as in Example 1 was performed. Assembled and crosslinked to produce a basic cell, which is an electric double layer capacitor. The resistance value of this basic cell was 2.6 ⁇ , and the capacitance was 15 mF. Industrial applicability
  • the conductive rubber film of the present invention is excellent in acid resistance, it does not easily deteriorate even in an acidic electrolytic solution, shows stable performance, and has a small volume resistance value in a direction perpendicular to the surface. Therefore, when used as a conductive partition, the basic cell of the obtained electric double layer capacitor can be used for a long time, and the resistance of the basic cell decreases and the capacity increases, so the basic cells can be connected in series and in parallel. By connecting, a stable and high-output battery can be manufactured. Further, in addition to the above-mentioned characteristics, it has an antistatic effect and an effect as a heating element.
  • various conductive materials for example, a conductive film for a thin secondary battery, a material for a laminated piezoelectric actuator, and a conductive partition Materials, for example, for electric double layer capacitors, etc.
  • Antistatic materials for example, floor and wall materials for facilities for precision electronic devices, electromagnetic wave shielding materials, electrodes, especially elastomer-composite electrodes with excellent flexibility It can also be used as an electrode for anode, soil electrode, rubber electrode for electric plating and electrometallurgy which can be used in electrolytic bath, connector, squeegee (for screen printing) and sheet ion sensor.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

On mélange 100 parties en poids d'un produit à base de caoutchouc comportant du caoutchouc à indice d'iode de 30 ou moins (par exemple un copolymère d'acrylonitrile hydrogéné et de butadiène) avec de 5 à 100 parties en poids de carbone conducteur présentant une surface spécifique de 20 à 2000 m2/g et un solvant (par exemple du méthylisobutylcétone). Le mélange est ensuite moulé pour former un film conducteur d'une épaisseur comprise entre 0,01 et 0,2 mm présentant une résistivité volumique perpendiculairement à la surface du film comprise entre 0,1 et 5 Ohm/cm. Ce film peut servir de cloison conductrice dans des condensateurs électriques bicouches.
PCT/JP1997/000036 1996-01-12 1997-01-10 Film de caoutchouc conducteur WO1997025375A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52508497A JP3451093B2 (ja) 1996-01-12 1997-01-10 導電性ゴムフィルム

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8/21738 1996-01-12
JP2173896 1996-01-12
JP8/240502 1996-09-11
JP24050296 1996-09-11

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WO1997025375A1 true WO1997025375A1 (fr) 1997-07-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003133179A (ja) * 2001-10-29 2003-05-09 Nippon Zeon Co Ltd 集電用導電性フィルムおよび該フィルム製造用導電性塗料

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139743A (ja) * 1974-10-02 1976-04-02 Dainippon Printing Co Ltd Dodenseikobunshizairyo
JPS5667350A (en) * 1979-11-06 1981-06-06 Showa Electric Wire & Cable Co Ltd Semiconducting composition
JPH07330987A (ja) * 1994-06-15 1995-12-19 Toshiba Silicone Co Ltd 導電性エチレン−プロピレン系ゴム組成物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139743A (ja) * 1974-10-02 1976-04-02 Dainippon Printing Co Ltd Dodenseikobunshizairyo
JPS5667350A (en) * 1979-11-06 1981-06-06 Showa Electric Wire & Cable Co Ltd Semiconducting composition
JPH07330987A (ja) * 1994-06-15 1995-12-19 Toshiba Silicone Co Ltd 導電性エチレン−プロピレン系ゴム組成物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003133179A (ja) * 2001-10-29 2003-05-09 Nippon Zeon Co Ltd 集電用導電性フィルムおよび該フィルム製造用導電性塗料

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