WO2020170991A1 - Procédé de fabrication de dispositif en nanotubes de carbone, dispositif en nanotubes de carbone, et dispositif de chauffage en nanotubes de carbone - Google Patents

Procédé de fabrication de dispositif en nanotubes de carbone, dispositif en nanotubes de carbone, et dispositif de chauffage en nanotubes de carbone Download PDF

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Publication number
WO2020170991A1
WO2020170991A1 PCT/JP2020/005907 JP2020005907W WO2020170991A1 WO 2020170991 A1 WO2020170991 A1 WO 2020170991A1 JP 2020005907 W JP2020005907 W JP 2020005907W WO 2020170991 A1 WO2020170991 A1 WO 2020170991A1
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Prior art keywords
carbon nanotube
electrodes
pair
sheet
resistance
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PCT/JP2020/005907
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English (en)
Japanese (ja)
Inventor
井上　鉄也
渡邊　徹
直治 増原
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日立造船株式会社
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Priority to JP2021501959A priority Critical patent/JP7413343B2/ja
Publication of WO2020170991A1 publication Critical patent/WO2020170991A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/158—Carbon nanotubes
    • C01B32/168—After-treatment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater

Definitions

  • the present invention relates to a carbon nanotube device manufacturing method, a carbon nanotube device, and a carbon nanotube heater.
  • Japanese Unexamined Patent Publication No. 2010-257971 (Reference 1) and Japanese Unexamined Patent Publication No. 2010-034056 (Reference 2) disclose surface heat sources using carbon nanotubes.
  • the surface heat source of Document 1 and Document 2 includes a heating element in which a predetermined number (for example, 100 layers) of carbon nanotube films are laminated, and two electrodes connected to both ends of the heating element.
  • a predetermined number for example, 100 layers
  • two electrodes connected to both ends of the heating element.
  • two electrodes are formed by a carbon nanotube film laminated body, and the heating element and the two electrodes are directly bonded to each other by the adhesiveness of the carbon nanotubes.
  • the present invention is directed to a method of manufacturing a carbon nanotube device including a pair of electrodes and a connecting sheet portion that is a sheet-shaped carbon nanotube molded body that connects between the pair of electrodes, and has a desired resistance. Its main purpose is to provide devices.
  • a method for manufacturing a carbon nanotube device includes: a) a pair of electrodes at both ends of a connection region extending in a circumferential direction on an outer surface of a rotating body rotatable about a rotation axis oriented in an axial direction. And b) winding the carbon nanotube sheet on the outer surface while passing over the pair of electrodes by rotating the rotating body by the initial number of windings, and the carbon around the rotating body.
  • the initial measured resistance is larger than a predetermined target resistance
  • the carbon nanotube sheet is wound on the outer surface while passing over the pair of electrodes by rotating the rotating body, and the carbon nanotube structure is obtained.
  • a method for manufacturing a carbon nanotube device is a) arranging a pair of electrodes at circumferentially separated positions on an outer surface of a rotating body rotatable about a rotation axis oriented in the axial direction. And b) winding the carbon nanotube sheet on the outer surface while passing over the pair of electrodes by rotating the rotor for the initial number of turns, and the carbon nanotube sheet around the rotor. Is a step of forming a cylindrical intermediate body laminated in the radial direction, c) a step of measuring the resistance between the pair of electrodes, and d) an initial measured resistance which is the resistance measured in the step c).
  • the carbon nanotube sheet When the resistance is higher than a predetermined target resistance, by rotating the rotating body, the carbon nanotube sheet is wound on the outer surface while passing over the pair of electrodes, and the carbon nanotube is formed on the tubular intermediate body.
  • the method includes the steps of stacking sheets, and e) fixing the carbon nanotube sheet layer stacked on the pair of electrodes to the pair of electrodes. According to the present invention, it is possible to provide a carbon nanotube device having a desired resistance.
  • the pair of electrodes are arranged at positions separated by 180° in the circumferential direction.
  • the step e) forms a connection sheet portion extending in the circumferential direction between the pair of electrodes by cutting the carbon nanotube sheet layer and the pair of electrodes at respective central portions of the pair of electrodes, A step of fixing both ends of the connection sheet portion to the pair of electrodes, or removing the pair of electrodes and the tubular carbon nanotube sheet layer from the rotating body, and the carbon nanotube sheet layer to the pair of electrodes. Fixing and pressing the carbon nanotube sheet layer between the pair of electrodes in the thickness direction to form a flat surface, thereby forming a connection sheet portion that connects the pair of electrodes.
  • the number of windings of the carbon nanotube sheet in the step d) is determined based on the initially measured resistance and the stacking resistance information indicating the relationship between the stacking number of the carbon nanotube sheet and the resistance.
  • a method for manufacturing a carbon nanotube device is a) arranging a pair of electrodes at circumferentially separated positions on an outer surface of a rotating body rotatable about a rotation axis oriented in the axial direction. And b) winding the carbon nanotube sheet on the outer surface while passing over the pair of electrodes by rotating the rotating body while measuring the resistance between the pair of electrodes. And c) forming a carbon nanotube sheet layer laminated on the pair of electrodes by continuing the step b) until the resistance measured in the step b) reaches a predetermined resistance. d) fixing the carbon nanotube sheet layer to the pair of electrodes. According to the present invention, it is possible to provide a carbon nanotube device having a desired resistance.
  • the pair of electrodes are arranged at positions separated by 180° in the circumferential direction.
  • the step d) forms a connection sheet portion extending in the circumferential direction between the pair of electrodes by cutting the carbon nanotube sheet layer and the pair of electrodes at respective central portions of the pair of electrodes, A step of fixing both ends of the connection sheet portion to the pair of electrodes, or removing the pair of electrodes and the tubular carbon nanotube sheet layer from the rotating body, and the carbon nanotube sheet layer to the pair of electrodes. Fixing and pressing the carbon nanotube sheet layer between the pair of electrodes in the thickness direction to form a flat surface, thereby forming a connection sheet portion that connects the pair of electrodes.
  • a method for manufacturing a carbon nanotube device includes: a) a pair of electrodes at both ends of a connection region extending in a circumferential direction on an outer surface of a rotating body rotatable about a rotation axis oriented in an axial direction. And a step of arranging a pair of measurement electrodes at a position sandwiching the connection region and the pair of electrodes on the outer side in the circumferential direction of the pair of electrodes, and b) rotating the rotating body for an initial number of turns. By rotating, the carbon nanotube sheet is wound on the outer surface while passing over the pair of electrodes and the pair of measurement electrodes, and the carbon nanotube sheets are laminated in the radial direction around the rotating body.
  • a method for manufacturing a carbon nanotube device is a) arranging a pair of electrodes at circumferentially separated positions on an outer surface of a rotating body rotatable about a rotation axis oriented in the axial direction. And a step of arranging a pair of measurement electrodes at positions distant from each other in the circumferential direction, and b) rotating the rotator by the initial number of windings to move the carbon nanotube sheet on the pair of electrodes and the pair of measurements.
  • the pair of electrodes are arranged at positions separated by 180° in the circumferential direction.
  • the step e) forms a connection sheet portion extending in the circumferential direction between the pair of electrodes by cutting the carbon nanotube sheet layer and the pair of electrodes at respective central portions of the pair of electrodes, A step of fixing both ends of the connection sheet portion to the pair of electrodes, or removing the pair of electrodes and the tubular carbon nanotube sheet layer from the rotating body, and the carbon nanotube sheet layer to the pair of electrodes. Fixing and pressing the carbon nanotube sheet layer between the pair of electrodes in the thickness direction to form a flat surface, thereby forming a connection sheet portion that connects the pair of electrodes.
  • the number of windings of the carbon nanotube sheet in the step d) is determined based on the initial measured resistance and the stacking resistance information indicating the relationship between the stacking number of the carbon nanotube sheets and the resistance.
  • a method for manufacturing a carbon nanotube device is a) arranging a pair of electrodes at circumferentially separated positions on an outer surface of a rotating body rotatable about a rotation axis oriented in the axial direction.
  • the pair of electrodes are arranged at positions separated by 180° in the circumferential direction.
  • the step d) forms a connection sheet portion extending in the circumferential direction between the pair of electrodes by cutting the carbon nanotube sheet layer and the pair of electrodes at respective central portions of the pair of electrodes, A step of fixing both ends of the connection sheet portion to the pair of electrodes, or removing the pair of electrodes and the tubular carbon nanotube sheet layer from the rotating body, and the carbon nanotube sheet layer to the pair of electrodes. Fixing and pressing the carbon nanotube sheet layer between the pair of electrodes in the thickness direction to form a flat surface, thereby forming a connection sheet portion that connects the pair of electrodes.
  • an adhesive is applied on the pair of measurement electrodes between the steps a) and b).
  • the adhesive is rosin in paste form.
  • the target number of windings corresponding to the target resistance is obtained based on the stacking resistance information indicating the relationship between the number of stacked carbon nanotube sheets and the resistance, and the initial number of windings is determined. Is set to be smaller than the target number of windings.
  • an adhesive is applied to the carbon nanotube sheet wound around the rotating body.
  • the adhesive contains a conductive additive.
  • a carbon nanotube device includes a pair of electrodes, and a connection sheet portion that is a sheet-shaped carbon nanotube molded body that connects the pair of electrodes, and the production of the carbon nanotube device described above. Manufactured by the method.
  • a carbon nanotube heater includes a carbon nanotube device, which is a heating element that generates heat when supplied with electric power, and a housing portion that houses the connection sheet portion of the carbon nanotube device therein. And a heat dissipating part provided on the outer surface of the accommodating part for equalizing heat from the carbon nanotube device and radiating the heat from the heat dissipating surface.
  • the accommodating portion is a sheet-shaped member that extends along the main surface of the connection sheet portion, and the heat dissipation portion extends on the accommodating portion in parallel with the main surface of the connection sheet portion,
  • the connection sheet portion overlaps the entire connection sheet portion in a direction perpendicular to the main surface.
  • the carbon nanotube heater further comprises another carbon nanotube device having the same structure as the carbon nanotube device and housed inside the housing part.
  • the other carbon nanotube device is arranged laterally adjacent to the carbon nanotube device.
  • the heat dissipation portion overlaps the entire connection sheet portion of the carbon nanotube device and the entire connection sheet portion of the other carbon nanotube device in a direction perpendicular to the main surface of the connection sheet portion of the carbon nanotube device. ..
  • connection sheet portion has a rectangular shape extending between the pair of electrodes, and a diagonal length of the connection sheet portion is 200 mm or more.
  • a temperature sensor for measuring the temperature of the heat radiation part is further provided.
  • FIG. 1 is a side view showing a carbon nanotube heater 1 according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing the carbon nanotube heater 1.
  • the carbon nanotube heater 1 is, for example, a relatively thin sheet heater used for heating an object.
  • the shape of the carbon nanotube heater 1 in a plan view is a substantially rectangular strip shape.
  • the horizontal direction in FIG. 1 is also referred to as “longitudinal direction”, and the vertical direction in FIG. 1 is also simply referred to as “vertical direction”.
  • the up-down direction in FIG. 2 (that is, the direction perpendicular to the longitudinal direction) is also referred to as “width direction”. It should be noted that the above-described vertical direction does not have to match the actual weight direction.
  • the carbon nanotube heater 1 includes a carbon nanotube device 2, a housing portion 31, and a heat radiation portion 34.
  • the shapes of the carbon nanotube device 2, the accommodating portion 31, and the heat radiating portion 34 in plan view are, for example, substantially rectangular strips extending in the longitudinal direction.
  • the shapes of the carbon nanotube heater 1, the carbon nanotube device 2, the accommodating portion 31, and the heat radiating portion 34 in plan view do not necessarily have to be substantially rectangular shapes that are long in the longitudinal direction. May be substantially square, or may be substantially rectangular long in the width direction.
  • the carbon nanotube device 2 is a substantially sheet-shaped heating element that generates heat when supplied with electric power.
  • the sheet shape in the present specification means a shape having a small thickness with respect to the length and width, and may or may not have flexibility.
  • the sheet shape in the present specification is a concept including a shape called a film shape.
  • the carbon nanotube device 2 includes a connection sheet portion 21, a pair of electrodes 22, and a support sheet portion 23.
  • the pair of electrodes 22 are arranged apart from each other in the longitudinal direction.
  • the connection sheet portion 21 and the support sheet portion 23 extend in the longitudinal direction from one electrode 22 to the other electrode 22, and connect the pair of electrodes 22.
  • connection sheet portion 21 is a conductive sheet member.
  • the connection sheet portion 21 is a flexible sheet-shaped carbon nanotube molded body formed of a large number of carbon nanotubes.
  • the connection sheet portion 21 is a laminated sheet-shaped carbon nanotube molded body in which a plurality of carbon nanotube sheets are laminated in the thickness direction.
  • the number of stacked carbon nanotube sheets in the connection sheet portion 21 varies depending on the performance required for the carbon nanotube device 2, but is, for example, 10 to 100 layers, and is about 40 layers in the present embodiment.
  • connection sheet portion 21 in plan view is, for example, a substantially rectangular strip shape extending in the longitudinal direction.
  • the length of the connection sheet portion 21 in the longitudinal direction (hereinafter, also simply referred to as “length”) varies depending on the performance required for the carbon nanotube device 2, but is, for example, 10 mm to 1000 mm.
  • the width of the connection sheet portion 21 in the width direction (hereinafter, also simply referred to as “width”) also varies depending on the performance required for the carbon nanotube device 2, but is, for example, 10 mm to 1000 mm. Both ends in the longitudinal direction of the connection sheet portion 21 are fixed and electrically connected to the pair of electrodes 22, respectively.
  • connection sheet portion 21 extends in the longitudinal direction and spreads in the width direction between the pair of electrodes 22.
  • the length and width of the connection sheet portion 21 are, for example, 200 mm and 60 mm.
  • the length and width of the connection sheet portion 21 are, for example, 94 mm and 180 mm.
  • the connection sheet portion 21 has a substantially rectangular shape having a diagonal length of 200 mm or more.
  • Each of the pair of electrodes 22 is a substantially rectangular strip-shaped thin plate member extending in the width direction.
  • Each electrode 22 is a metal foil formed of, for example, copper (Cu) or the like.
  • the thickness of each electrode 22 is, for example, 20 ⁇ m to 300 ⁇ m, preferably 50 ⁇ m to 100 ⁇ m.
  • each electrode 22 is connected to the connection sheet portion 21 by being folded in half and pressed with the end portion of the connection sheet portion 21 interposed therebetween.
  • the connection sheet portion 21 electrically connects the pair of electrodes 22.
  • the support sheet portion 23 is a flexible insulating sheet member formed of an insulator.
  • the support sheet portion 23 is, for example, a mesh sheet formed of resin fibers such as polyester and fluororesin. Both end portions in the longitudinal direction of the support sheet portion 23 are fixed to the upper surfaces of the pair of electrodes 22 with an adhesive, for example.
  • the material and structure of the support sheet portion 23 may be changed in various ways.
  • a large number of carbon nanotubes forming the connection sheet portion 21 extend, for example, substantially parallel to the longitudinal direction.
  • the large number of carbon nanotubes may extend in a direction inclined with respect to the longitudinal direction.
  • the large number of carbon nanotubes may extend in substantially the same direction or may extend in different directions.
  • the large number of carbon nanotubes are bonded to each other with an adhesive containing a polyvinyl alcohol (PVA) aqueous solution as a main component, and further bonded to the lower surface of the support sheet portion 23. ..
  • the adhesive may be an epoxy, acrylic or silicone rubber adhesive.
  • the adhesive preferably contains a conductive additive.
  • the conductive additive is, for example, metal fine particles such as silver (Ag), graphene (specifically, powder obtained by crushing sheet-like graphene), milled fiber, or carbon nanotube powder.
  • the diameter of the conductive additive is preferably 10 ⁇ m or less, more preferably less than 1 ⁇ m.
  • the adhesive may not contain the conductive additive.
  • the accommodating portion 31 is an exterior member for accommodating (that is, covering) the entire carbon nanotube device 2 inside and fixing it.
  • the accommodating portion 31 is a flexible insulating sheet-shaped member.
  • the accommodating portion 31 is formed of, for example, a resin or an elastic polymer material.
  • the housing portion 31 includes a lower member 32 and an upper member 33.
  • the lower member 32 supports and covers the carbon nanotube device 2 from the lower side.
  • the upper member 33 covers the carbon nanotube device 2 from above by being fixed on the upper surface of the lower member 32 with the carbon nanotube device 2 interposed therebetween. In other words, the carbon nanotube device 2 is sealed by the lower member 32 and the upper member 33.
  • the lower member 32 is formed, for example, by applying a silicone resin in a film shape on a release paper and curing it.
  • the upper member 33 is formed, for example, by applying a silicone resin in a film shape on the lower member 32 and curing the resin.
  • the lower member 32 and/or the upper member 33 may be a laminated film in which an adhesive layer is provided on the surface of a resin film, a silicon sheet, or the like.
  • the carbon nanotube heater 1 further includes a pair of terminals (not shown).
  • the pair of terminals are electrically connected to the pair of electrodes 22 inside the housing portion 31, respectively.
  • the pair of terminals penetrates the housing portion 31 from the pair of electrodes 22 and extends to the outside of the housing portion 31. Electric power is supplied to the carbon nanotube device 2 via the pair of terminals. This causes the carbon nanotube device 2 to generate heat.
  • the accommodating portion 31 does not necessarily need to accommodate the entire carbon nanotube device 2 inside, but at least the entire connecting sheet portion 21 may be accommodated inside.
  • a part or the whole of each electrode 22 may be exposed to the outside from the housing portion 31.
  • the pair of terminals described above may be omitted, and the electric wire may be directly connected to the pair of electrodes 22 exposed from the housing portion 31.
  • the heat dissipation part 34 is a sheet-shaped (that is, film-shaped or thin-plate-shaped) member provided on the outer surface of the accommodation part 31.
  • the heat dissipation part 34 is provided on the upper surface (that is, the upper main surface) of the housing part 31.
  • the heat dissipation part 34 is, for example, a metal sheet-shaped member such as a metal foil fixed to the upper surface of the housing part 31 with an adhesive or the like.
  • the metal for example, aluminum (Al) or copper can be used.
  • the heat dissipation part 34 may be, for example, a metal thin film formed on the upper surface of the housing part 31 by vapor deposition or the like.
  • the heat dissipation portion 34 extends along the main surface of the connection sheet portion 21 substantially in parallel with the main surface.
  • the heat radiating portion 34 overlaps substantially the entire connection sheet portion 21 in the direction perpendicular to the main surface of the connection sheet portion 21.
  • the heat dissipation part 34 covers substantially the entire connection sheet part 21 in a plan view.
  • the upper surface of the heat radiating portion 34 (that is, the main surface opposite to the housing portion 31) is a heat radiating surface that equalizes and radiates heat from the connection sheet portion 21 of the carbon nanotube device 2.
  • the carbon nanotube heater 1 is provided with a temperature sensor 36 that measures the temperature of the heat dissipation portion 34.
  • the temperature sensor 36 is provided on the peripheral portion of the heat dissipation portion 34.
  • the mounting position of the temperature sensor 36 may be variously changed on the heat dissipation part 34.
  • the temperature sensor 36 for example, an electric resistance temperature detector, a thermocouple, or a thermistor can be used.
  • temperature control and overheat prevention of the carbon nanotube heater 1 are performed based on the output from the temperature sensor 36 (that is, the measured temperature value and the like).
  • thermocontrol and overheat prevention of the carbon nanotube heater 1 using a thermostat may be performed.
  • a portion that changes depending on the temperature built in the thermostat (for example, bimetal in the case of a bimetal type thermostat) corresponds to the temperature sensor.
  • FIG. 3 is a side view showing the configuration of the device manufacturing apparatus 4 for manufacturing the carbon nanotube device 2.
  • FIG. 4 is a plan view showing the device manufacturing apparatus 4.
  • the carbon nanotube sheet 94 and each electrode 22 are drawn thicker than they actually are.
  • each electrode 22 is hatched with parallel lines.
  • a part of the configuration of the device manufacturing apparatus 4 is omitted for easy understanding of the drawing.
  • the device manufacturing apparatus 4 includes a substrate holding unit 41, a rotating body 42, a rotating mechanism 43, an adhesive applying unit 44, a pressing roller 45, and a control unit 46.
  • the substrate holding unit 41 is located at the upper left of the rotation axis J1 of the rotating body 42.
  • the adhesive applying section 44 and the pressing roller 45 are located on the upper right of the rotation axis J1.
  • the substrate holding unit 41 contacts the lower surface of the substrate 92 on which the carbon nanotube array 91, which is a set of a large number of carbon nanotubes, stands, and holds the substrate 92 from below.
  • the substrate 92 is, for example, a flat thin plate member.
  • the substrate 92 is, for example, a silicon substrate or a stainless steel substrate provided with a silicon dioxide film on its surface.
  • the substrate 92 may be a flexible long thin plate member.
  • the device manufacturing apparatus 4 be provided with a collecting unit (for example, a collecting roller and a motor) that winds up the portion of the substrate 92 from which the carbon nanotube array 91 has been peeled off.
  • the carbon nanotube array 91 is, for example, formed by a chemical vapor deposition method using a catalyst such as iron (Fe) (that is, a CVD method) with respect to the surface of the substrate 92 in a predetermined orientation direction (in the present embodiment, substantially omitted). It is formed by growing a large number of (vertically) oriented carbon nanotubes on the substrate 92.
  • the carbon nanotube array 91 may be formed by various other methods.
  • the thickness of the carbon nanotube array 91 (that is, the length in the vertical direction of the carbon nanotubes included in the carbon nanotube array 91) is, for example, 50 ⁇ m to 1000 ⁇ m. In this embodiment, the thickness of the carbon nanotube array 91 is 50 ⁇ m to 500 ⁇ m. The thickness of the carbon nanotube array 91 is measured by, for example, a scanning electron microscope (SEM) (manufactured by JEOL Ltd.) or a non-contact film thickness meter (manufactured by KEYENCE CORPORATION).
  • SEM scanning electron microscope
  • a non-contact film thickness meter manufactured by KEYENCE CORPORATION
  • each carbon nanotube is, for example, a multi-wall carbon nanotube having 5 to 10 layers.
  • Each carbon nanotube may be a multi-wall carbon nanotube having 4 or less layers or 11 or more layers, or may be a single-wall carbon nanotube.
  • the bulk density of the carbon nanotube array 91 is, for example, 10 mg/cm 3 to 60 mg/cm 3 .
  • the carbon nanotube array 91 has a bulk density of 20 mg/cm 3 to 50 mg/cm 3 .
  • the bulk density of the carbon nanotube array 91 is obtained by dividing the mass (that is, the basis weight) of the carbon nanotube array 91 per unit area by the thickness of the carbon nanotube array 91.
  • the rotating body 42 is a member having a substantially columnar shape or a substantially cylindrical shape centered on the rotation axis J1 that is oriented in a direction perpendicular to the paper surface of FIG.
  • the outer side surface of the rotating body 42 is a substantially cylindrical surface extending parallel to the axial direction. Since the axial direction corresponds to the width direction of the carbon nanotube device 2, it is also referred to as “width direction”.
  • An insulating sheet member 230 (for example, a mesh sheet formed of polyester fiber), which is to be the support sheet portion 23 of the carbon nanotube heater 1, is detachably attached to the outer surface of the rotating body 42.
  • the insulating sheet member 230 covers, for example, the outer peripheral surface of the rotating body 42 over the entire circumference in the circumferential direction (hereinafter, also simply referred to as “circumferential direction”) about the rotation axis J1.
  • a pair of electrodes is arranged on the outer surface of the rotating body 42.
  • a plurality of pairs of electrodes may be arranged on the outer surface of the rotator 42.
  • three pairs of electrodes are arranged on the outer surface of the rotating body 42, and are detachably attached to the outer surface of the rotating body 42 via the insulating sheet member 230.
  • two electrodes of the first electrode pair are denoted by reference numeral 22a
  • two electrodes of the second electrode pair are denoted by reference numeral 22b
  • two electrodes of the third electrode pair are denoted by reference numeral 22c. Attach.
  • the electrodes 22a, 22b, 22c are not distinguished from each other, they are referred to as the electrodes 22 as described above.
  • the connection sheet portions 21 are formed between the three pairs of electrodes 22, and the three carbon nanotube devices 2 are formed.
  • connection region 421 On the outer surface of the rotating body 42, a region extending in the circumferential direction between the two electrodes 22a of the first electrode pair, and a region extending in the circumferential direction between the two electrodes 22b of the second electrode pair.
  • the extending region and the region extending in the circumferential direction between the two electrodes 22c of the third electrode pair are referred to as "connection region 421".
  • a pair of electrodes 22a is arranged at both ends in the circumferential direction of the connection region 421 located on the left side of the rotation axis J1 in FIG.
  • a pair of electrodes 22b is arranged at both ends in the circumferential direction of the connection region 421 located at the lower right of the rotation axis J1.
  • a pair of electrodes 22c is arranged at both ends in the circumferential direction of the connection region 421 located at the upper right of the rotation axis J1.
  • the rotating body 42 can be rotated about the rotation axis J1 by the rotating mechanism 43.
  • the rotating body 42 rotates clockwise in the figure.
  • the rotating mechanism 43 is, for example, an electric motor connected to the rotating body 42.
  • drawing direction By rotating the rotating body 42 by the rotating mechanism 43, the carbon nanotube array 91 on the substrate 92 is pulled out in the direction from the left side to the right side in FIG. 3 (hereinafter, referred to as “drawing direction”), and the pulling direction.
  • a carbon nanotube sheet 94 that extends to the bottom is formed.
  • the width of the carbon nanotube sheet 94 in the width direction is substantially the same as the width of the carbon nanotube array 91 in the width direction. In the example shown in FIG.
  • the carbon nanotube sheet 94 has a substantially rectangular shape.
  • the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is wound around the outer surface of the rotating body 42 while passing over the three pairs of electrodes 22.
  • the carbon nanotube sheets 94 are stacked on the outer surface of the rotating body 42 in the radial direction centered on the rotation axis J1 (hereinafter, also simply referred to as “radial direction”).
  • the carbon nanotube sheet 94 is a sheet-shaped carbon nanotube molded body formed of a plurality of carbon nanotubes. Specifically, in the carbon nanotube sheet 94, a plurality of carbon nanotube single yarns drawn out from the carbon nanotube array 91 in the drawing direction are arranged in the width direction and are connected to each other to form a sheet-shaped molded body (also called a web-shaped molded body). It is captured.)
  • the carbon nanotube single yarn is a linear carbon nanotube molded body in which a plurality of carbon nanotubes are continuously connected in the longitudinal direction by Van den Waals force or the like.
  • the adhesive applying section 44 is arranged at a position that faces the outer surface of the rotating body 42 in the radial direction.
  • the adhesive applying section 44 applies the above-mentioned adhesive (preferably an adhesive containing a conductive additive) to the carbon nanotube sheet 94 wound on the outer surface of the rotating body 42.
  • the adhesive application unit 44 is, for example, a spray nozzle that sprays the adhesive toward the carbon nanotube sheet 94 on the rotating body 42.
  • the adhesive applying section 44 may be a coater that applies an adhesive in contact with or in proximity to the carbon nanotube sheet 94 on the rotating body 42.
  • the pressing roller 45 is a substantially cylindrical or cylindrical member centered on the rotation axis J2 that faces the above-mentioned axial direction (that is, the width direction), and is rotatable around the rotation axis J2.
  • the width of the pressing roller 45 in the width direction is larger than the width of the carbon nanotube sheet 94 in the width direction.
  • the pressing roller 45 is located on the front side in the rotation direction of the rotating body 42 (that is, on the downstream side in the winding direction of the carbon nanotube sheet 94) with respect to the adhesive applying section 44, and faces the outer surface of the rotating body 42 in the radial direction. ..
  • the pressing roller 45 is pressed toward the rotating body 42 by a pressing mechanism (not shown) (for example, an electric cylinder or an air cylinder), so that the carbon nanotube sheet 94 to which the adhesive is applied is applied to the outer surface of the rotating body 42. Press toward. As a result, the carbon nanotube sheet 94 is compacted on the insulating sheet member 230 mounted on the outer surface of the rotating body 42.
  • the radial distance between the rotating shaft J1 of the rotating body 42 and the rotating shaft J2 of the pressing roller 45 can be adjusted by the above-described pressing mechanism, and can be adjusted even while the rotating body 42 is rotating.
  • the control unit 46 is an ordinary computer system including a processor, a memory, an input/output unit, a bus and the like.
  • the bus is a signal circuit that connects the processor, the memory, and the input/output unit.
  • the memory stores programs and various types of information.
  • the processor executes various processes (for example, numerical operation) while using the memory or the like according to a program or the like stored in the memory.
  • the input/output unit receives input from the operator and outputs a signal to another configuration (for example, the rotation mechanism 43).
  • Each function (for example, storage unit and calculation unit) of the control unit 46 is realized by the computer system performing a process based on a predetermined program.
  • the control unit 46 may be, for example, a programmable logic controller (PLC), a circuit board, or the like. Note that the control unit 46 is not shown in FIG.
  • laminated resistance information indicating the relationship between the number of laminated carbon nanotube sheets 94 and the resistance of the laminated body is previously stored. It is stored.
  • the stacking resistance information is acquired in advance by experiments or the like before manufacturing the carbon nanotube heater 1.
  • the laminated resistance information may have the resistance itself of the laminated body as information, or may have a predetermined parameter that determines the resistance of the laminated body as information.
  • the laminated resistance information indicates the relationship between the number of laminated carbon nanotube sheets 94 and the resistance per unit length in the longitudinal direction of the laminated body. As shown in FIG. 5, the resistance per unit length of the above laminated body gradually decreases as the number of laminated carbon nanotube sheets 94 increases. Note that when the length per unit length of the laminate changes, the resistance per unit length also changes (for example, when the length per unit length of the laminate increases, the resistance per unit length gradually decreases. ), stacking resistance information corresponding to each length of the stacked body is stored in the storage unit of the control unit 46.
  • FIG. 7 to 15 are views showing the carbon nanotube heater 1 in the process of being manufactured.
  • the target resistance preset as the resistance of the carbon nanotube device 2 is input to the control unit 46 by the operator.
  • the target resistance is, for example, 1 ⁇ to 100 ⁇ , and is 20 ⁇ in the present embodiment.
  • the number of layers of the carbon nanotube sheets 94 corresponding to the target resistance (that is, the number of windings with respect to the rotating body 42, hereinafter referred to as “target number of windings”) is stacked by the calculation unit of the control unit 46. It is calculated based on resistance information. Specifically, for example, the laminated resistance information corresponding to the preset length of the connection sheet portion 21 is selected.
  • the resistance per unit length corresponding to a value obtained by dividing the target resistance by the length of the connection sheet portion 21 is obtained, and the number of laminated layers corresponding to the resistance per unit length is the target winding number. Calculated as the number of times.
  • the resistance per unit length it is preferable to consider the contact resistance between the connection sheet portion 21 and the electrode 22.
  • the carbon nanotube sheet 94 may have variations in the density of carbon nanotubes (so-called fiber density). Therefore, even if the carbon nanotube sheet 94 is wound a target number of times, The resistance of device 2 does not necessarily equal the target resistance. Therefore, in the manufacturing method illustrated in FIG. 6, the calculation unit sets an initial winding number smaller than the target winding number based on the target winding number (step S11).
  • the initial number of windings is set to be smaller than the target number of windings by a predetermined number of windings (for example, 1 to 20 rotations, preferably 1 to 9 rotations).
  • step S12 the insulating sheet member 230 is attached to the outer surface of the rotating body 42, and the three pairs of electrodes 22 are attached on the insulating sheet member 230.
  • the pair of electrodes 22 are arranged at both ends of the above-described connection region 421 on the outer surface of the rotating body 42 (step S12).
  • a conductive paste is applied on the upper main surface of each electrode 22 (that is, the upper surface opposite to the lower surface which is the main surface facing the outer surface of the rotating body 42).
  • the conductive paste is, for example, low melting point solder, a metal paste, or a conductive adhesive.
  • the conductive adhesive is, for example, an adhesive containing the above-mentioned conductive additive. Note that step S12 may be performed in parallel with step S11 or may be performed before step S11.
  • step S11 and step S12 are completed, the rotating mechanism 43 is controlled by the control unit 46, and the rotating body 42 is rotated by the above-described initial winding number.
  • the carbon nanotube sheet 94 extracted from the carbon nanotube array 91 is wound on the outer surface of the rotating body 42 while passing over the three pairs of electrodes 22a, 22b, 22c.
  • the carbon nanotube sheet 94 is laminated between each of the three pairs of electrodes 22a, 22b, 22c.
  • the adhesive including the above-mentioned conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42.
  • the adhesive is, for example, a PVA aqueous solution containing 0.1% by mass to 10% by mass (preferably 1% by mass to 5% by mass) of PVA.
  • the adhesive is also an aggregating agent for aggregating carbon nanotubes.
  • the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer side surface of the rotating body 42 and is compacted onto the insulating sheet member 230 on the outer side surface.
  • the tubular intermediate body 51 is formed in which the carbon nanotube sheets 94 are radially laminated around the rotating body 42 by the number of laminations equal to the initial winding number (step S13). ).
  • the number of stacked carbon nanotube sheets 94 shown in FIG. 7 is smaller than the actual number of stacked layers.
  • the electrode 22a is provided with the lower left end of the upper electrode 22a in FIG. 7 (that is, the end of the two ends in the longitudinal direction that faces the other electrode 22a in the circumferential direction). It is the figure seen from the tangential direction of the outer side surface of the rotating body 42 in the fixed position.
  • the electrode 22a is provided with a plurality of convex portions 222 standing upright from the upper main surface 221 of the electrode 22a at one end in the longitudinal direction shown in FIG.
  • the carbon nanotube sheet 94 wound on the outer surface of the rotating body 42 contacts the electrode 22a along the upper ends of the plurality of protrusions 222 at the one end of the electrode 22a.
  • the carbon nanotube sheet 94 is in contact with the upper main surface 221 of the electrode 22a at a portion other than the one end of the electrode 22a. The same applies to the lower electrode 22a in FIG.
  • the rotation mechanism 43 is stopped. Then, as shown in FIG. 9, the tubular intermediate body 51 is cut outside the connection region 421 in the circumferential direction. Specifically, the tubular intermediate body 51 is cut at the outside of the pair of electrodes 22a (that is, two cutting positions on the opposite side of the connection region 421 with the electrodes 22a sandwiched therebetween).
  • a specific cutting position is a position between the electrodes 22a and 22b adjacent to each other in the circumferential direction, a position between the electrodes 22a and 22c, and a position between the electrodes 22b and 22c. is there.
  • the cutting of the tubular intermediate body 51 is performed by a cutting blade 47 such as a cutter, for example.
  • the tubular intermediate body 51 may be cut on the pair of electrodes 22a.
  • the resistance between the pair of electrodes 22a is measured (step S14).
  • the pair of electrodes 22a are in contact with both ends in the longitudinal direction of the laminated sheet-like carbon nanotube structure 52, which is a portion of the tubular intermediate body 51 that extends in the circumferential direction in the connection region 421.
  • the end portion of the carbon nanotube structure 52 is temporarily fixed to the electrode 22a by the above-mentioned conductive paste and the adhesive applied from the adhesive applying portion 44.
  • the pair of electrodes 22a are electrically connected by the carbon nanotube structure 52.
  • the resistance is measured by an operator using a resistance measuring device 48 such as a tester.
  • the resistance measuring device 48 may be provided in the device manufacturing apparatus 4, and the resistance measurement of step S14 may be automatically performed after the end of step S13.
  • the resistance measured in step S14 (hereinafter referred to as “initial measurement resistance”) is sent to the control unit 46 (see FIG. 3).
  • the initial measured resistance is greater than or equal to the target resistance described above.
  • the winding of the carbon nanotube sheet 94 is completed.
  • step S15 The number of windings to be added to the carbon nanotube sheet 94 (hereinafter, referred to as "additional winding number") is determined (step S15). Specifically, the resistance per unit length corresponding to the value obtained by dividing the initially measured resistance by the length of the connection sheet portion 21 is obtained, and the number of laminated layers (initial winding number) corresponding to the resistance per unit length is calculated. And the target winding number may be obtained as the additional winding number.
  • the rotating mechanism 43 is driven by the control unit 46, and the rotating body 42 is rotated by the additional winding number.
  • the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is wound around the outer surface of the rotating body 42 while passing over the three pairs of electrodes 22a, 22b, 22c.
  • the carbon nanotube sheet 94 is laminated between the three pairs of electrodes 22a, 22b, 22c (step S16).
  • step S16 the adhesive including the above-described conductive additive is applied from the adhesive applying unit 44 to the carbon nanotube sheet 94 wound around the rotating body 42. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer surface of the rotating body 42 and is compacted on the carbon nanotube structure 52.
  • the rotation mechanism 43 is stopped. Then, as shown in FIG. 12, the carbon nanotube sheet 94 on the carbon nanotube structure 52 is cut outside the pair of electrodes 22a in the circumferential direction (that is, two cuts on the opposite side of the connection region 421 with the electrodes 22a sandwiched therebetween). It is cut at the position).
  • the specific cutting position is, for example, a position that radially overlaps with the end of the electrode 22a opposite to the end where the plurality of protrusions 222 (see FIG. 8) are provided.
  • the laminated sheet-shaped connection sheet portion 21 extending in the circumferential direction in the connection region 421 is formed (step S17).
  • step S17 when the carbon nanotube sheet 94 is cut, the insulating sheet member 230 is also cut. As a result, the support sheet portion 23 extending in the circumferential direction is formed in the connection region 421.
  • the cutting of the carbon nanotube sheet 94 and the insulating sheet member 230 is performed, for example, by the cutting blade 47 such as a cutter similar to step S14.
  • step S17 ends, the pair of electrodes 22a, the connection sheet portion 21 and the support sheet portion 23 are removed from the rotating body 42, and both ends of the connection sheet portion 21 in the longitudinal direction are fixed to the pair of electrodes 22a.
  • the carbon nanotube device 2 is formed (step S18). Specifically, as shown in FIG. 13, the pair of electrodes 22a, the connection sheet portion 21, and the support sheet are in a state where the end portion of the connection sheet portion 21 is temporarily fixed on the upper main surface 221 of the electrode 22a. The part 23 is removed from the rotating body 42.
  • FIG. 13 is an enlarged side view showing a portion in the vicinity of one electrode 22a (the same applies to FIG. 14). In the state shown in FIG. 13, each electrode 22a is heated. This facilitates the deformation of the electrode 22a. The heating of the electrode 22a is performed, for example, by irradiating the electrode 22a with a laser.
  • each electrode 22a is folded in two at a folding line 223 that is substantially vertical to the longitudinal direction, as shown in FIG.
  • the plurality of convex portions 222 provided on one end portion in the longitudinal direction of the electrode 22a penetrate the end portion in the longitudinal direction of the connection sheet portion 21 in the thickness direction, and the other end portion in the longitudinal direction of the electrode 22a.
  • the plurality of convex portions 222 are pressed by the other end portion and bend so as to approach the one end portion of the electrode 22a, and the end portion of the connection sheet portion 21 is connected to the one end portion of the electrode 22a. To fix in between.
  • the fixing of the connecting sheet portion 21 and the electrode 22a is strengthened by hardening the conductive paste applied in step S12. Further, in step S12, when the low melting point solder is applied to the electrode 22a, when the electrode 22a is folded in half in step S18, the electrode 22a is heated and then cooled to lower the low melting point solder. Is hardened, and the fixation between the connection sheet portion 21 and the electrode 22a is strengthened. Note that in step S18, even if the connection sheet portion 21 and the electrode 22a are further fixed by mechanically fixing the parts on both sides of the folding line 223 in the folded electrode 22a with a stapler or the like. Good. Alternatively, the two-folded electrode 22a may be further folded (for example, spirally folded) to further strengthen the fixing between the connection sheet portion 21 and the electrode 22a.
  • the carbon nanotube device 2 is formed, as shown in FIG. 15, the carbon nanotube device 2 is mounted on the lower member 32 of the housing portion 31 in which a silicone resin is applied in a film shape on the release paper 35 and cured. Placed. Then, the silicon resin is applied in a film shape on the lower member 32 and the carbon nanotube device 2 and cured, so that the upper member 33 of the housing portion 31 is formed. As a result, as shown in FIG. 3, the carbon nanotube device 2 is housed inside the housing 31 and the carbon nanotube heater 1 is formed (step S19).
  • the temperature was raised from room temperature (about 20° C.) to about 25° C. to 100° C. in 5 minutes by supplying a voltage of 40 V to the carbon nanotube heater 1 manufactured by the manufacturing method.
  • the temperature was obtained by sandwiching the carbon nanotube heater 1 with an aluminum panel having a thickness of 3 mm and measuring the temperature of the surface of the aluminum panel with a thermometer.
  • the supply voltage, the temperature rising rate, the reached temperature, and the like can be variously changed by changing the watt density (W/cm 2 ) of the carbon nanotube device 2.
  • the carbon nanotube sheet 94 is pulled out from the carbon nanotube array 91, which is a set of carbon nanotubes erected in a predetermined orientation, and is wound on the outer surface of the rotating body 42.
  • the carbon nanotube sheet 94 may be formed in advance by a carbon nanotube sheet manufacturing apparatus different from the device manufacturing apparatus 4 and may be wound around a supply roll provided in the device manufacturing apparatus 4 in advance. In this case, when the rotating body 42 of the device manufacturing apparatus 4 rotates, the supply roll also rotates, and the carbon nanotube sheet 94 is fed from the supply roll.
  • the carbon nanotube sheet 94 in the carbon nanotube sheet manufacturing apparatus may be manufactured by various methods.
  • the carbon nanotube sheet 94 may be formed by being pulled out from the carbon nanotube array as described above, or may be formed by tilting the carbon nanotube array in a predetermined direction with a pressing tool or the like.
  • the carbon nanotube sheet 94 may be formed by dispersing carbon nanotubes in a sheet-like fiber into a network by a wet papermaking method, an impregnation method, or the like.
  • the carbon nanotube sheet 94 may be formed by weaving carbon nanotube wires. The same applies to other methods of manufacturing the carbon nanotube heater 1 described later.
  • the carbon nanotube device 2 includes the pair of electrodes 22 and the connection sheet portion 21 that is a sheet-shaped carbon nanotube molded body that connects the pair of electrodes 22.
  • the first method of manufacturing the carbon nanotube device 2 includes a step of arranging the pair of electrodes 22 (step S12), a step of forming the tubular intermediate body 51 (step S13), and measuring the resistance between the pair of electrodes 22. Step (step S14), step of stacking carbon nanotube sheets 94 (step S16), step of forming connection sheet portion 21 (step S17), and fixing both ends of connection sheet portion 21 to a pair of electrodes 22. And the step of performing (step S18).
  • step S12 a pair of electrodes 22 are arranged at both ends of the connection region 421 extending in the circumferential direction on the outer surface of the rotating body 42 rotatable about the rotation axis J1 oriented in the axial direction.
  • step S13 the carbon nanotube sheet 94 is wound on the outer surface of the rotor 42 while passing over the pair of electrodes 22 by rotating the rotor 42 by the initial number of turns.
  • the tubular intermediate body 51 is formed in which the carbon nanotube sheets 94 are laminated in the radial direction around the rotating body 42.
  • step S14 the tubular intermediate body 51 is cut outside the connection region 421 in the circumferential direction. Then, the resistance between the pair of electrodes 22 electrically connected by the laminated sheet-like carbon nanotube structure 52 is measured.
  • the carbon nanotube structure 52 is a portion of the tubular intermediate body 51 that extends in the circumferential direction in the connection region 421.
  • step S16 when the initially measured resistance, which is the resistance measured in step S14, is larger than the predetermined target resistance, the rotator 42 is rotated so that the carbon nanotube sheet 94 passes over the pair of electrodes 22. It is wound on the outer surface of the rotating body 42. As a result, the carbon nanotube sheet 94 is laminated on the carbon nanotube structure 52.
  • step S17 the carbon nanotube sheet 94 is cut outside the connection region 421 in the circumferential direction, so that the connection sheet portion 21 in the connection region 421 is formed into a laminated sheet and extends in the circumferential direction.
  • the carbon nanotube device 2 By manufacturing the carbon nanotube device 2 by the manufacturing method, a carbon having a desired resistance (that is, a resistance substantially equal to the target resistance) is suppressed by suppressing the influence of variations in the density of the carbon nanotubes in the carbon nanotube sheet 94.
  • the nanotube device 2 can be provided. Further, the carbon nanotube device 2 can be easily manufactured by the above manufacturing method.
  • the first manufacturing method of the carbon nanotube device 2 further includes a step (step S11) of setting the initial winding number before step S13.
  • step S11 the target winding number corresponding to the target resistance is obtained based on the stacking resistance information indicating the relationship between the stacking number of carbon nanotube sheets 94 and the resistance. Then, the initial winding number is set to be smaller than the target winding number.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance with high accuracy. The same applies to the fourth manufacturing method of the carbon nanotube device 2 described later.
  • the number of windings of the carbon nanotube sheet 94 in step S16 is determined based on the initial measured resistance and the stacking resistance information indicating the relationship between the number of stacked carbon nanotube sheets 94 and the resistance. (Step S15).
  • the number of stacked carbon nanotube sheets 94 to be stacked in step S16 can be accurately determined.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance with high accuracy. The same applies to the fourth manufacturing method of the carbon nanotube device 2.
  • the adhesive is applied to the carbon nanotube sheet 94 wound around the rotating body 42.
  • the strength of the connection sheet portion 21 can be increased.
  • the adhesive contains a conductive additive.
  • the conductivity of the connection sheet portion 21 can be increased.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance while reducing the number of laminated carbon nanotube sheets 94 in the connection sheet portion 21. Therefore, the weight of the carbon nanotube heater 1 can be reduced.
  • the carbon nanotube heater 1 preferably includes the carbon nanotube device 2, the housing portion 31, and the heat radiation portion 34.
  • the carbon nanotube device 2 is a heating element that generates heat when electric power is supplied.
  • the accommodating portion 31 accommodates the connection sheet portion 21 of the carbon nanotube device 2 inside. Thereby, damage to the connection sheet portion 21 can be further suppressed.
  • the degree of freedom in selecting the installation location of the carbon nanotube heater 1 can be improved.
  • the heat dissipation part 34 is provided on the outer surface of the housing part 31, and equalizes the heat from the carbon nanotube device 2 to dissipate the heat from the heat dissipation surface. As a result, it is possible to improve the uniformity of heating by the carbon nanotube heater 1 at each site to be heated.
  • the accommodating portion 31 is a sheet-shaped member that extends along the main surface of the connection sheet portion 21, and the heat dissipation portion 34 extends on the accommodating portion 31 in parallel with the main surface of the connection sheet portion 21 and the connection sheet. It overlaps with the entire connection sheet portion 21 in the direction perpendicular to the main surface of the portion 21.
  • the temperature nonuniformity in the connection sheet portion 21 can be suitably suppressed.
  • the heat radiating portion 34 facilitates the transfer of heat from the central portion of the connecting sheet portion 21 to the peripheral portion, the uniformity of the temperature distribution is improved in the entire carbon nanotube heater 1 and the connecting sheet portion 21. can do.
  • connection sheet portion 21 has a rectangular shape that spreads between the pair of electrodes 22, and the length of the diagonal line of the connection sheet portion 21 is 200 mm or more.
  • the temperature difference between the central portion and the peripheral portion of the connecting sheet portion 21 becomes relatively large.
  • the temperature difference is, for example, 10° C. or higher. Therefore, as described above, the structure of the carbon nanotube heater 1 capable of improving the uniformity of the temperature distribution of the connection sheet portion 21 is particularly suitable for the carbon nanotube heater having the relatively large temperature difference.
  • the length, width and diagonal length of the connecting sheet portion 21 are 200 mm, 60 mm and 209 mm, and when the temperature of the central portion of the connecting sheet portion 21 is raised to about 92° C. The temperature difference between the peripheral part and the peripheral part was about 14°C. Further, the length, width and diagonal length of the connecting sheet portion 21 are 94 mm, 180 mm and 203 mm, and when the temperature of the central portion of the connecting sheet portion 21 is raised to about 92° C., the central portion of the connecting sheet portion 21 The temperature difference between the edge and the peripheral portion was about 23°C.
  • the length, width and diagonal length of the connecting sheet portion 21 are 62 mm, 145 mm and 158 mm, and when the temperature of the central portion of the connecting sheet portion 21 is raised to about 92° C. The temperature difference between the edge and the peripheral portion was about 9°C.
  • the carbon nanotube heater 1 further includes the temperature sensor 36 that measures the temperature of the heat dissipation portion 34.
  • the temperature uniformity of the carbon nanotube heater 1 is improved by the heat radiating portion 34, so that it is possible to suppress the occurrence of a difference in measured temperature depending on the mounting position of the temperature sensor 36.
  • the degree of freedom of the mounting position of the temperature sensor 36 is improved, and the temperature of the carbon nanotube heater 1 can be measured accurately. Further, even if an abnormality such as overheating occurs at a position away from the temperature sensor 36, the abnormality can be detected with high accuracy.
  • the first method of manufacturing the carbon nanotube device 2 includes the step of forming the connection sheet portion 21 (step S17) and the step of fixing both ends of the connection sheet portion 21 to the pair of electrodes 22 (step S18). ), and.
  • step S17 the carbon nanotube sheets 94 are laminated between the pair of electrodes 22, thereby forming the laminated sheet-shaped connection sheet portion 21 extending in the longitudinal direction between the pair of electrodes 22.
  • Each electrode 22 of the pair of electrodes 22 has a plate shape.
  • each electrode 22 is folded with the end portion of the connection sheet portion 21 interposed therebetween.
  • each electrode 22 has a plurality of protrusions that are erected from the main surface 221 of each electrode 22 at one end in the longitudinal direction. It is preferable to provide 222. Then, in step S ⁇ b>18, each electrode 22 is folded in half along the folding line 223 perpendicular to the longitudinal direction to sandwich the end portion of the connection sheet portion 21, and the plurality of convex portions 222 form the end portions of the connection sheet portion 21. It is preferable to penetrate the portion and contact the other end portion of each electrode 22 in the longitudinal direction. Thereby, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • the conductive paste on the main surface 221 of each electrode 22 before step S18. Thereby, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • each electrode 22 is preferably heated in step S18. Thereby, the electrode 22 is easily deformed along the connection sheet portion 21, so that more suitable contact between the electrode 22 and the connection sheet portion 21 can be realized. As a result, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • connection sheet portion 21 does not necessarily have to be performed by folding the electrode 22 as described above.
  • connection located on the electrode 22 The connection sheet portion 21 may be fixed to the electrode 22 by covering the end portion of the sheet portion 21 with a metal foil and joining the metal foil and the electrode 22.
  • the connection sheet portion 21 may be fixed to the electrode 22 by a fixing method other than the above.
  • FIG. 16 is a diagram showing a flow of fixing the connection sheet portion 21 to the electrode 22.
  • 17 to 21 are views showing the vicinity of the end portion of the connection sheet portion 21.
  • connection accessory has a material and a shape having better bonding characteristics with respect to the electrode 22 than the connection sheet portion 21.
  • the good joining property means, for example, that the joining strength is high when the electrode 22 is welded by a low melting point solder or the like, and the contact resistance with the electrode 22 is low.
  • the connection accessory is made of metal such as copper.
  • connection sheet portion 21 slits 211 parallel to the longitudinal direction are formed at the end portions of the connection sheet portion 21 corresponding to the electrodes 22 by laser irradiation or the like. ..
  • the end of the connection sheet portion 21 is divided into a plurality of end elements 212 arranged in the width direction.
  • the width of the end element 212 is, for example, 10 mm to 50 mm.
  • a plurality of linear end portions 213 are formed as shown in FIG. 18 (step S181).
  • the linear ends 213 are formed, for example, by twisting the end elements 212 with a finger to converge them.
  • the linear end portion 213 may be formed at the end portion of the connection sheet portion 21 in which the slit is not formed by pinching a part of the end portion in the width direction with a finger and twisting.
  • each of the plurality of linear ends 213 is sandwiched by the plurality of connecting aids (step S182).
  • the connecting accessory 24a is a plate-shaped member.
  • the connecting accessory 24a is folded in two in a direction substantially parallel to the longitudinal direction in the direction of the arrow, and the linear end portion 213 is laterally (that is, one side in the width direction). Hold it in place.
  • the connecting accessory 24b is a plate-shaped member having a through hole 241 in the center.
  • the linear end portion 213 is inserted into the through hole 241 of the connection accessory 24 and then bent at a predetermined angle (for example, about 90°) with respect to the longitudinal direction. This prevents the linear end portion 213 from coming off the through hole 241.
  • the connecting accessory 24b is folded in two in the direction of the arrow along a folding line that is substantially parallel to the width direction and that passes over the through hole 241, and fixes the linear end portion 213 protruding from the through hole 241 by sandwiching it. ..
  • connection accessory 24c is a tubular member (for example, a tubular member).
  • the linear end portion 213 is inserted inside the connecting accessory 24c in the radial direction.
  • the connecting accessory 24c is compressed in the radial direction to sandwich and fix the linear end portion 213 located inside.
  • the connecting accessory 24c may be a rectangular tubular member. Note that, in the following description, when it is not necessary to distinguish between the connected auxiliary devices 24a to 24c, they are collectively referred to as the connected auxiliary device 24.
  • step S183 a plurality of connecting accessories 24 are joined to the electrode 22 (step S183).
  • the joining of the connecting accessory 24 to the electrode 22 is performed by, for example, low melting point solder.
  • the joining may be performed by other methods. If the width of the connection sheet portion 21 is relatively small, the end portion of the connection sheet portion 21 is not divided in step S181, and the entire end portion of the connection sheet portion 21 is bundled into one line. The end 213 may be formed.
  • the step of fixing both ends of the connection sheet portion 21 to the pair of electrodes 22 corresponds to each electrode 22 of the pair of electrodes 22.
  • a step of sandwiching the linear end portion 213 (step S182), and a step of joining the connecting accessory 24 to each electrode 22 step S183).
  • the connecting accessory 24a is a plate-shaped member.
  • the connecting accessory 24a is folded by sandwiching the linear end portion 213 from the side, whereby the linear end portion 213 is fixed. Thereby, the end portion of the connection sheet portion 21 can be easily and firmly fixed to the connection accessory 24a.
  • the connecting accessory 24b is a plate-shaped member having a through hole 241.
  • step S182 the linear end 213 is inserted into the through hole 241 of the connecting accessory 24b.
  • the connecting accessory 24b is folded with the linear end 213 protruding from the through hole 241 sandwiched therebetween, whereby the linear end 213 is fixed.
  • the end portion of the connection sheet portion 21 can be easily and firmly fixed to the connection accessory 24b.
  • the connecting accessory 24c is a tubular member.
  • step S182 the linear end portion 213 is inserted inside the connecting accessory 24c, and the connecting accessory 24c is radially compressed, so that the linear end portion 213 is fixed. Thereby, the end portion of the connection sheet portion 21 can be easily and firmly fixed to the connection accessory 24c.
  • step S181 the end portion of the connection sheet portion 21 is divided into a plurality of end element elements 212 arranged in the width direction, and each of the plurality of end element elements 212 is bound. As a result, a plurality of linear end portions 213 are formed. Subsequently, in step S182, the plurality of linear end portions 213 are respectively sandwiched by the plurality of connecting aids 24. Then, in step S183, the plurality of connection aids 24 are joined to the respective electrodes 22. Thereby, even if the width of the connection sheet portion 21 is wide, the connection sheet portion 21 and the electrode 22 can be suitably joined.
  • steps S31 to S40 of FIG. 22 will be specifically described. Note that steps S31, S33, S35 to S36, and S40 in FIG. 22 are substantially the same as steps S11, S13, S15 to S16, and S19 in FIG. 6, and thus the description will be simplified. Further, the structures of the accommodating portion 31 and the heat radiating portion 34 of the carbon nanotube heater 1 are substantially the same as those in the first example.
  • step S11 the target winding number corresponding to the target resistance of the carbon nanotube heater 1 is calculated based on the stacking resistance information in the calculation unit of the control unit 46.
  • the initial winding number that is smaller than the target winding number is set based on the target winding number (step S31).
  • step S32 the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction (step S32).
  • the conductive paste is applied onto the upper main surface of each electrode 22 (that is, the upper surface opposite to the lower surface which is the main surface facing the outer surface of the rotating body 42) as in step S12. .
  • step S32 may be performed in parallel with step S31 or may be performed before step S31.
  • step S31 and step S32 are completed, similarly to step S13, the rotating body 42 is rotated by the number of initial windings described above, and the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 passes over the pair of electrodes 22. While being wound around the outer surface of the rotating body 42. As a result, the cylindrical intermediate body 51 is formed in which the carbon nanotube sheets 94 are radially laminated around the rotating body 42 by the number of laminations equal to the initial winding number (step S33).
  • step S33 the adhesive containing the above-mentioned conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42 in the same manner as above. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer side surface of the rotating body 42 and is compacted onto the insulating sheet member 230 on the outer side surface.
  • step S34 the resistance between the pair of electrodes 22 is measured (step S34). As described above, in step S34, the tubular intermediate body 51 is not cut. The initial measured resistance measured in step S34 is equal to or higher than the above-mentioned target resistance. When the initial measured resistance is substantially equal to the target resistance, the winding of the carbon nanotube sheet 94 is completed.
  • the number of additional windings of the carbon nanotube sheet 94 is determined by the calculation unit of the control unit 46 based on the initial measured resistance and the above-described laminated resistance information, as in step S15. (Step S35).
  • the rotating body 42 is rotated by the additional winding number, and the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is rotated while passing over the pair of electrodes 22, as in step S16. Wrapped on the outer surface of body 42.
  • the carbon nanotube sheet 94 is laminated on the tubular intermediate body 51 to form a carbon nanotube sheet layer (step S36).
  • the adhesive containing the above-mentioned conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer surface of the rotating body 42 and is compacted on the tubular intermediate body 51.
  • step S36 When step S36 is completed, as shown in FIG. 24, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 laminated on the pair of electrodes 22 are removed from the rotating body 42 together with the insulating sheet member 230. (Step S37).
  • step S38 the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22 (step S38). Specifically, the electrode 22 is heated while the carbon nanotube sheet layer 53 is temporarily fixed on the electrode 22, and is folded in half along a folding line 223 that is substantially vertical to the longitudinal direction as shown in FIG. It As a result, a part of the carbon nanotube sheet layer 53 (that is, a portion that is temporarily fixed on the electrode 22 and is to be an end portion in the longitudinal direction of the connection sheet portion 21) is formed by the electrode 22 in the figure. It is pinched from both upper and lower sides.
  • the plurality of protrusions 222 provided at one end of the electrode 22 in the longitudinal direction penetrates the carbon nanotube sheet layer 53 in the thickness direction and contacts the other end of the electrode 22 in the longitudinal direction. Then, the plurality of convex portions 222 are pressed by the other end portion and bend so as to approach the one end portion of the electrode 22, and the carbon nanotube sheet layer 53 is interposed between the one end portion of the electrode 22. Fixed to.
  • the fixing of the carbon nanotube sheet layer 53 and the electrode 22 is strengthened by hardening the conductive paste applied in step S32.
  • the electrode 22 is provided with the low-melting point solder in step S32, the electrode 22 is heated when the electrode 22 is folded in two in step S38, and then the temperature is lowered to reduce the low-melting point solder. Is hardened, and the fixation between the carbon nanotube sheet layer 53 and the electrode 22 is strengthened.
  • step S38 in the electrode 22 folded in two, the portions on both sides of the folding line 223 are mechanically fixed by a stapler or the like, whereby the fixation between the carbon nanotube sheet layer 53 and the electrode 22 is further strengthened.
  • the two-folded electrode 22 may be further folded (for example, spirally folded) to further strengthen the fixation between the carbon nanotube sheet layer 53 and the electrode 22.
  • step S38 When step S38 is completed, the tubular carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction together with the insulating sheet member 230 to be planar. In other words, the carbon nanotube sheet layer 53 between the pair of electrodes 22 is crushed in the thickness direction. As a result, as shown in FIG. 26, the connection sheet portion 21 and the support sheet portion 23 that connect the pair of electrodes 22 are formed, and the formation of the carbon nanotube device 2 is completed (step S39). In the example shown in FIG. 26, the connection sheet portion 21 is provided above and below the support sheet portion 23 with the support sheet portion 23 interposed therebetween.
  • the carbon nanotube device 2 When the carbon nanotube device 2 is formed, the carbon nanotube device 2 is housed inside the housing portion 31 as in step S19. As a result, the carbon nanotube heater 1 (see FIG. 1) is formed (step S40).
  • the second method of manufacturing the carbon nanotube device 2 includes the step of arranging the pair of electrodes 22 (step S32), the step of forming the tubular intermediate body 51 (step S33), and the pair of electrodes 22.
  • the step of measuring the resistance between the electrodes 22 (step S34), the step of laminating the carbon nanotube sheets 94 (step S36), and the carbon nanotube sheet layer 53 laminated on the pair of electrodes 22 are fixed to the pair of electrodes 22.
  • a step S38 a step (step S38).
  • step S32 a pair of electrodes 22 are arranged at positions distant from each other in the circumferential direction on the outer surface of the rotating body 42 rotatable about the rotation axis J1 that faces the axial direction.
  • step S33 the carbon nanotube sheet 94 is wound on the outer surface of the rotor 42 while passing over the pair of electrodes 22 by rotating the rotor 42 by the initial number of turns.
  • the tubular intermediate body 51 is formed in which the carbon nanotube sheets 94 are laminated in the radial direction around the rotating body 42.
  • step S36 when the initially measured resistance, which is the resistance measured in step S34, is larger than the predetermined target resistance, the rotator 42 is rotated to cause the carbon nanotube sheet 94 to pass over the pair of electrodes 22. It is wound on the outer surface of the rotating body 42. As a result, the carbon nanotube sheet 94 is laminated on the tubular intermediate body 51.
  • the carbon nanotube device 2 By manufacturing the carbon nanotube device 2 by the manufacturing method, a carbon having a desired resistance (that is, a resistance substantially equal to the target resistance) is suppressed by suppressing the influence of variations in the density of the carbon nanotubes in the carbon nanotube sheet 94.
  • the nanotube device 2 can be provided. Further, the carbon nanotube device 2 can be easily manufactured by the above manufacturing method.
  • the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction. Further, in the step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 are removed from the rotating body 42, and the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22. Then, a step of forming the connection sheet portion 21 that connects the pair of electrodes 22 by pressing the carbon nanotube sheet layer 53 between the pair of electrodes 22 in the thickness direction to make it planar (steps S37 to S39) Equipped with. Thereby, the carbon nanotube device 2 can be easily formed. Further, the number of carbon nanotube sheets stacked in the connection sheet portion 21 can be easily increased.
  • the second manufacturing method of the carbon nanotube device 2 further includes a step (step S31) of setting the initial winding number before step S33, similarly to the first manufacturing method.
  • step S31 the target number of turns corresponding to the target resistance is obtained based on the stacking resistance information indicating the relationship between the stacking number of carbon nanotube sheets 94 and the resistance. Then, the initial winding number is set to be smaller than the target winding number. As a result, it is possible to prevent or suppress excessive stacking of the carbon nanotube sheets 94 when forming the tubular intermediate body 51 in step S33. As a result, the resistance of the carbon nanotube device 2 can be brought close to the target resistance with high accuracy. The same applies to the fifth manufacturing method of the carbon nanotube device 2 described later.
  • the number of windings of the carbon nanotube sheet 94 in step S36 is based on the initial measured resistance and the stacking resistance information indicating the relationship between the stacking number of the carbon nanotube sheets 94 and the resistance, as in the first manufacturing method. Is determined (step S35).
  • the number of carbon nanotube sheets 94 to be laminated in step S36 can be accurately determined.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance with high accuracy. The same applies to the fifth manufacturing method of the carbon nanotube device 2.
  • the adhesive is applied to the carbon nanotube sheet 94 wound around the rotating body 42. ..
  • the strength of the connection sheet portion 21 can be increased.
  • the adhesive contains a conductive additive.
  • the conductivity of the connection sheet portion 21 can be increased.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance while reducing the number of laminated carbon nanotube sheets 94 in the connection sheet portion 21. Therefore, the weight of the carbon nanotube heater 1 can be reduced.
  • the third to sixth manufacturing methods of the carbon nanotube device 2 is applied to the carbon nanotube sheet 94 wound around the rotating body 42. ..
  • the strength of the connection sheet portion 21 can be increased.
  • the adhesive contains a conductive additive.
  • the conductivity of the connection sheet portion 21 can be increased.
  • the resistance of the carbon nanotube device 2 can be brought close to the target resistance while reducing the number of laminated carbon nanotube sheets 94 in the connection sheet portion 21. Therefore, the weight of the carbon nanotube heater 1 can be reduced.
  • the carbon nanotube heater 1 preferably includes the carbon nanotube device 2 described above, the housing portion 31, and the heat radiation portion 34.
  • the carbon nanotube device 2 is a heating element that generates heat when electric power is supplied.
  • the accommodating portion 31 accommodates the connection sheet portion 21 of the carbon nanotube device 2 inside. Thereby, damage to the connection sheet portion 21 can be further suppressed.
  • the degree of freedom in selecting the installation location of the carbon nanotube heater 1 can be improved.
  • the heat dissipation part 34 is provided on the outer surface of the housing part 31, and equalizes the heat from the carbon nanotube device 2 to dissipate the heat from the heat dissipation surface. As a result, it is possible to improve the uniformity of heating by the carbon nanotube heater 1 at each site to be heated.
  • the second manufacturing method of the carbon nanotube device 2 includes the step of forming the connection sheet portion 21 (step S39) and the step of fixing both ends of the connection sheet portion 21 to the pair of electrodes 22 (step S38). ), and.
  • step S39 the carbon nanotube sheets 94 are laminated between the pair of electrodes 22, thereby forming the laminated sheet-shaped connection sheet portion 21 extending in the longitudinal direction between the pair of electrodes 22.
  • Each electrode 22 of the pair of electrodes 22 has a plate shape.
  • each electrode 22 is folded with the end portion of the connection sheet portion 21 interposed therebetween.
  • each electrode 22 has the main surface of each electrode 22 at one end in the longitudinal direction. It is preferable to provide a plurality of convex portions 222 that stand from 221. Then, in step S38, each electrode 22 is folded in half along the folding line 223 perpendicular to the longitudinal direction to sandwich the end portion of the connection sheet portion 21, and the plurality of convex portions 222 form the end portions of the connection sheet portion 21. It is preferable to penetrate the portion and contact the other end portion of each electrode 22 in the longitudinal direction.
  • the end portion of the connection sheet portion 21 is a part of the carbon nanotube sheet layer 53 that will be the connection sheet portion 21. Thereby, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • the conductive paste is applied onto the main surface 221 of each electrode 22 before step S38. Thereby, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • each electrode 22 is preferably heated in step S38, as in the first manufacturing method. This facilitates the deformation of the electrode 22 along the carbon nanotube sheet layer 53, which is to become the connection sheet portion 21, so that a more suitable contact between the electrode 22 and the connection sheet portion 21 can be realized. As a result, the contact resistance between the connection sheet portion 21 and the electrode 22 can be further reduced.
  • FIGS. 27 and 28 a third example of the flow of manufacturing the carbon nanotube heater 1 will be described with reference to FIGS. 27 and 28.
  • the resistance between the pair of electrodes 22 is continuously measured from the start of winding the carbon nanotube sheet 94.
  • the resistance measuring device 48 is provided in the device manufacturing apparatus 4 shown in FIG. 23, and the resistance measuring device 48 is electrically connected to each electrode 22 via the slip ring 49 provided on the rotation shaft of the rotation mechanism 43. Connected to.
  • the structures of the housing portion 31 and the heat radiation portion 34 are substantially the same as those of the first and second manufacturing methods.
  • the insulating sheet member 230 is attached to the outer surface of the rotating body 42, and the pair of electrodes 22 is provided on the insulating sheet member 230. Is attached. As shown in FIG. 29, the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction (step S51).
  • the conductive paste is applied onto the upper main surface of each electrode 22 (that is, the upper surface opposite to the lower surface which is the main surface facing the outer surface of the rotating body 42) as in step S32. ..
  • step S52 the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is wound on the outer surface of the rotating body 42 while passing over the pair of electrodes 22 (step S52).
  • step S52 as in step S33, the adhesive containing the conductive additive is applied to the carbon nanotube sheet 94 wound around the rotating body 42 from the adhesive applying section 44 (see FIG. 23). To be done. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed toward the outer side surface of the rotating body 42 by the pressing roller 45 (see FIG. 23) and is compacted onto the insulating sheet member 230 on the outer side surface. To be done.
  • step S52 the winding of the carbon nanotube sheet 94 is performed in parallel with the continuous measurement of the resistance between the pair of electrodes 22 by the resistance measuring device 48. Then, step S52 is continued until the resistance measured by the resistance measuring device 48 reaches a predetermined target resistance, thereby forming the tubular carbon nanotube sheet layer 53 laminated on the pair of electrodes 22. (Step S53).
  • steps S52 to S53 When steps S52 to S53 are completed, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 laminated on the pair of electrodes 22 are rotated together with the insulating sheet member 230, as in steps S37 to S39. It is removed from 42 (step S54), and the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22 (step S55). Then, the tubular carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction together with the insulating sheet member 230 to be planar. As a result, the connection sheet portion 21 and the support sheet portion 23 that connect the pair of electrodes 22 are formed, and the formation of the carbon nanotube device 2 is completed (step S56).
  • steps S61 to S62 may be performed instead of steps S54 to S56.
  • the carbon nanotube sheet layer 53, the pair of electrodes 22, and the insulating sheet member 230 are cut at substantially the center of each of the pair of electrodes 22 in the longitudinal direction.
  • two connection sheet portions 21 extending in the circumferential direction are formed between the pair of electrodes 22 (each of which is divided into two) (step S61).
  • both ends of each connection sheet portion 21 are fixed to the pair of electrodes 22 (each of which is divided into two), so that two carbon nanotube devices 2 are formed (step S62).
  • the fixing of the connection sheet portion 21 in step S62 may be performed by folding the electrode 22 with the end portion of the connection sheet portion 21 sandwiched therebetween, as shown in FIGS. 13 and 14, for example. In this case, it is preferable that the plurality of protrusions 222 of the electrode 22 be provided at both ends in the longitudinal direction of the electrode 22 before cutting.
  • the fixing of the connecting sheet portion 21 in step S62 may be performed by using connecting auxiliaries 24a to 24c as shown in FIGS. 19 to 21.
  • the carbon nanotube device 2 When the carbon nanotube device 2 is formed, the carbon nanotube device 2 is housed inside the housing portion 31 as in step S40. As a result, the carbon nanotube heater 1 (see FIG. 1) is formed (step S57).
  • the step of disposing the pair of electrodes 22 (step S51) and the winding of the carbon nanotube sheet 94 while measuring the resistance between the pair of electrodes 22 includes a step of rotating (step S52), a step of forming the carbon nanotube sheet layer 53 (step S53), and a step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 (step S55).
  • step S51 a pair of electrodes 22 are arranged at positions distant from each other in the circumferential direction on the outer surface of the rotating body 42 rotatable about the rotation axis J1 oriented in the axial direction.
  • step S52 by rotating the rotating body 42, the carbon nanotube sheet 94 is wound around the outer surface of the rotating body 42 while passing over the pair of electrodes 22.
  • step S53 the carbon nanotube sheet laminated on the pair of electrodes 22 is continued by continuing step S52 until the resistance measured in step S52 reaches a predetermined resistance (that is, a resistance substantially equal to the target resistance).
  • the layer 53 is formed.
  • a carbon having a desired resistance that is, a resistance substantially equal to the target resistance
  • the nanotube device 2 can be provided.
  • step S51 the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction.
  • step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 includes a step of performing steps S54 to S56 or steps S61 to S62.
  • steps S54 to S56 after the end of step S53, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 are removed from the rotating body 42, and the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22. Then, the carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction to have a planar shape, whereby the connection sheet portion 21 that connects the pair of electrodes 22 is formed. Thereby, the carbon nanotube device 2 can be easily manufactured. Further, the number of carbon nanotube sheets stacked in the connection sheet portion 21 can be easily increased.
  • steps S61 to S62 the carbon nanotube sheet layer 53 and the pair of electrodes 22 are cut at the respective central portions of the pair of electrodes 22, thereby forming the connection sheet portion 21 extending in the circumferential direction between the pair of electrodes 22. It Then, both ends of the connection sheet portion 21 are fixed to the pair of electrodes 22. Thereby, the carbon nanotube device 2 can be easily manufactured.
  • the electrode 22 after cutting is referred to as an electrode piece
  • steps S61 to 62 two sets of connection sheet portions 21 extending in the circumferential direction are formed between the pair of electrode pieces, and both ends of each connection sheet portion 21 form a pair.
  • the pair of electrodes 22 may be used for manufacturing one carbon nanotube device 2 without being cut. The same applies to the sixth manufacturing method of the carbon nanotube device 2 described later.
  • the adhesive is applied to the carbon nanotube sheet 94 wound around the rotating body 42. It is preferable. Thereby, the strength of the connection sheet portion 21 can be increased. As a result, it is possible to suppress damage to the connection sheet portion 21 (for example, cracking in the width direction of the connection sheet portion 21 or dropping of carbon nanotubes from the connection sheet portion 21). More preferably, the adhesive contains a conductive additive. Thereby, the conductivity of the connection sheet portion 21 can be increased. As a result, the resistance of the carbon nanotube device 2 can be brought close to the target resistance while reducing the number of laminated carbon nanotube sheets 94 in the connection sheet portion 21. Therefore, the weight of the carbon nanotube heater 1 can be reduced.
  • the carbon nanotube heater 1 preferably includes the carbon nanotube device 2 described above, the housing portion 31, and the heat radiation portion 34.
  • the carbon nanotube device 2 is a heating element that generates heat when electric power is supplied.
  • the accommodating portion 31 accommodates the connection sheet portion 21 of the carbon nanotube device 2 inside. Thereby, damage to the connection sheet portion 21 can be further suppressed.
  • the degree of freedom in selecting the installation location of the carbon nanotube heater 1 can be improved.
  • the heat dissipation part 34 is provided on the outer surface of the housing part 31, and equalizes the heat from the carbon nanotube device 2 to dissipate the heat from the heat dissipation surface. As a result, it is possible to improve the uniformity of heating by the carbon nanotube heater 1 at each site to be heated.
  • the pair of electrodes 22 need not necessarily be arranged at positions separated by 180° in the circumferential direction.
  • the circumferential angle between the pair of electrodes 22 may be 120° on one side and 240° on the other side.
  • the above steps S61 to S62 are performed in the step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22.
  • two carbon nanotube devices 2 having different connection sheet portions 21 can be formed in parallel.
  • the parallel circuit of the one side portion and the other side portion of the pair of electrodes 22 in the carbon nanotube sheet layer 53 is synthesized.
  • the resistance is measured by the resistance measuring device 48.
  • the ratio of the lengths of the one side portion and the other side portion of the carbon nanotube sheet layer 53 (that is, the resistance ratio) is used to calculate the resistance of the one side portion and the other side from the combined resistance.
  • the resistance of the portion (that is, the resistance between each of the pair of electrodes 22) is obtained by a known calculation method.
  • a plurality of pairs of electrodes 22 may be arranged on the outer surface of the rotating body 42 in step S51.
  • the angles between the plurality of pairs of electrodes 22 may be the same or different.
  • the resistance measurement in step S52 for two electrodes 22 selected from a plurality of pairs of electrodes 22, the combined resistance of the parallel circuit between the two electrodes 22 is measured, and the pair of electrodes 22 of each pair is measured.
  • the resistance between the pair of electrodes 22 of each set is obtained from the combined resistance by using the ratio of the lengths of the carbon nanotube sheet layers 53 between them.
  • the above-described steps S61 to S62 are carried out for each pair of electrodes 22. Thereby, a plurality of carbon nanotube devices 2 can be formed in parallel.
  • steps S61 to S62 shown in FIG. 28 may be performed instead of steps S37 to S39 (see FIG. 22).
  • the step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 includes the step of performing steps S37 to S39 or steps S61 to S62.
  • steps S61 to S62 as described above, by cutting the carbon nanotube sheet layer 53 and the pair of electrodes 22 at the central portions of the pair of electrodes 22, respectively, the connection sheet extending in the circumferential direction between the pair of electrodes 22. The part 21 is formed. Then, both ends of the connection sheet portion 21 are fixed to the pair of electrodes 22.
  • connection sheet portions 21 extending in the circumferential direction are formed between a pair of electrode pieces, and both end portions of each connection sheet portion 21 are fixed to the pair of electrode pieces, so that two pieces having substantially the same shape are formed.
  • Two carbon nanotube devices 2 are manufactured. The same applies to the fifth manufacturing method of the carbon nanotube device 2 described later.
  • the pair of electrodes 22 does not necessarily have to be arranged at positions separated by 180° in the circumferential direction, as in the third manufacturing method.
  • the circumferential angle between the pair of electrodes 22 may be 120° on one side and 240° on the other side.
  • the resistance measurement in step S34 the combined resistance of the parallel circuit described above is measured, and the resistance between the pair of electrodes 22 is obtained from the combined resistance.
  • the above-described steps S61 to S62 are performed. As a result, two carbon nanotube devices 2 having different connection sheet portions 21 can be formed in parallel.
  • a plurality of pairs of electrodes 22 may be arranged on the outer surface of the rotating body 42 in step S51.
  • the angles between the plurality of pairs of electrodes 22 may be the same or different.
  • the resistance measurement in step S52 the combined resistance of the parallel circuit between the two electrodes 22 is measured for the two electrodes 22 selected from the plurality of pairs of electrodes 22, and the combined resistance of each set is calculated from the combined resistance.
  • the resistance between the pair of electrodes 22 is required.
  • the above-described steps S61 to S62 are carried out for each pair of electrodes 22. Thereby, a plurality of carbon nanotube devices 2 can be formed in parallel.
  • step S11 the target resistance of the carbon nanotube device 2 is input to the control unit 46 shown in FIG.
  • the target number of turns of the carbon nanotube sheet 94 corresponding to the target resistance is obtained based on the stacking resistance information.
  • step S71 an initial number of windings that is smaller than the target number of windings by a predetermined number of windings is set (step S71).
  • the insulating sheet member 230 is attached to the outer surface of the rotating body 42.
  • the three pairs of electrodes 22a, 22b, 22c and the three pairs of measuring electrodes 25a, 25b, 25c are mounted on the insulating sheet member 230 (step S72).
  • the shapes of the electrodes 22a, 22b, 22c are the same as those described above.
  • the pair of electrodes 22a, the pair of electrodes 22b, and the pair of electrodes 22c are arranged at both ends of the connection region 421, respectively.
  • the measurement electrodes 25a, 25b, 25c are, for example, substantially strip-shaped and extend substantially parallel to the rotation axis J1 of the rotating body 42.
  • the pair of measuring electrodes 25a are arranged at positions separated in the circumferential direction. The same applies to the pair of measuring electrodes 25b and the pair of measuring electrodes 25c.
  • the pair of measurement electrodes 25a is located outside the pair of electrodes 22a in the circumferential direction, and is located at a position where the connection region 421 between the pair of electrodes 22a and the pair of electrodes 22a are sandwiched therebetween. Is located in.
  • the pair of measuring electrodes 25a are arranged close to the pair of electrodes 22a.
  • the pair of measurement electrodes 25b are arranged outside the circumferential direction of the pair of electrodes 22b in a connection region 421 between the pair of electrodes 22b and at a position sandwiching the pair of electrodes 22b therebetween.
  • the pair of measuring electrodes 25b are arranged close to the pair of electrodes 22b.
  • the pair of measurement electrodes 25c are arranged outside the circumferential direction of the pair of electrodes 22c, at positions where the connection region 421 between the pair of electrodes 22c and the pair of electrodes 22c are sandwiched therebetween.
  • the pair of measuring electrodes 25c are arranged close to the pair of electrodes 22c.
  • the electrodes 22a, 22b, 22c are collectively referred to as “electrode 22" as described above.
  • the measurement electrodes 25a, 25b, 25c are also collectively referred to as “measurement electrode 25".
  • the arrangement of the electrodes 22 and the arrangement of the measurement electrodes 25 may be performed first, or may be performed in parallel.
  • a conductive paste for example, an adhesive containing a conductive additive
  • An adhesive is applied onto each measuring electrode 25.
  • the adhesive is preferably an insulating paste.
  • As the insulating paste it is preferable to use paste rosin (for example, powder rosin dissolved in a solvent such as alcohol). Note that step S72 may be performed in parallel with step S71 or may be performed before step S71.
  • the rotating body 42 is rotated by the above-described initial number of windings, as in step S13.
  • the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 passes over the three pairs of electrodes 22a, 22b, 22c and the three pairs of measuring electrodes 25a, 25b, 25c, and on the outer surface of the rotating body 42. Is wound around.
  • the carbon nanotube sheet 94 is laminated between each of the three pairs of electrodes 22a, 22b, 22c.
  • the adhesive containing the conductive additive is applied to the carbon nanotube sheet 94 wound around the rotating body 42 by the adhesive applying unit 44, as described above.
  • the carbon nanotubes forming the carbon nanotube sheet 94 are aggregated.
  • the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer side surface of the rotating body 42 and is compacted onto the insulating sheet member 230 on the outer side surface.
  • FIG. 33 shows a pair of electrodes 22a and a pair of measuring electrodes 25a among the three pairs of electrodes 22 and the three pairs of measuring electrodes 25.
  • a method of manufacturing the carbon nanotube device 2 including the pair of electrodes 22a will be described, focusing on the carbon nanotube device 2. The same applies to the manufacture of the carbon nanotube device 2 including the pair of electrodes 22b and the pair of electrodes 22c, respectively.
  • the number of stacked carbon nanotube sheets 94 shown in FIG. 33 is drawn smaller than the actual number of stacked layers for convenience of illustration.
  • the rotation mechanism 43 is stopped. Then, as shown in FIG. 34, the cylindrical intermediate body 51 is cut at two cutting positions outside the pair of measuring electrodes 25a in the circumferential direction. Specifically, the tubular intermediate body 51 is cut at a cutting position on the side opposite to the connection region 421 of the electrode 22a and the measurement electrode 25a. In the present embodiment, a specific cutting position is between the measurement electrode 25a and the measurement electrode 25b adjacent in the circumferential direction, between the measurement electrode 25a and the measurement electrode 25c, and between the measurement electrodes. It is a position between 25b and the measuring electrode 25c.
  • the cutting of the tubular intermediate body 51 is performed by a cutting blade 47 such as a cutter, for example.
  • the resistance between the pair of measuring electrodes 25a is measured (step S74).
  • the longitudinal ends of the laminated sheet-like carbon nanotube structure 52 which is a portion of the tubular intermediate body 51 extending in the circumferential direction between the pair of measuring electrodes 25a, are in contact with the pair of measuring electrodes 25a. doing.
  • the end portion of the carbon nanotube structure 52 is temporarily fixed to the measurement electrode 25a by the above-mentioned pressure-sensitive adhesive (for example, paste-like rosin) and the adhesive applied from the adhesive applying portion 44.
  • the pair of measurement electrodes 25a are electrically connected by the carbon nanotube structure 52.
  • the adhesive permeates into the gaps between the many carbon nanotubes forming the carbon nanotube structure 52 and pulls the carbon nanotube structure 52 onto the measurement electrode 25a, so that the carbon nanotube structure 52 and the measurement electrode 25a. Reduce the contact resistance between and.
  • the resistance is measured by an operator using a resistance measuring device 48 such as a tester.
  • the resistance measuring device 48 may be provided in the device manufacturing apparatus 4, and the resistance measurement of step S74 may be automatically performed after the end of step S73.
  • the measurement value obtained in step S74 is sent to the control unit 46 (see FIG. 31).
  • the control unit 46 obtains the initial measurement resistance, which is the resistance between the pair of electrodes 22a, based on the measured value.
  • the initial measurement resistance is obtained, for example, by multiplying the measured value by the ratio of the circumferential distance between the pair of electrodes 22a to the circumferential distance between the pair of measurement electrodes 25a.
  • the measured value may be used as the initial measurement resistance.
  • the initial measured resistance is greater than or equal to the target resistance described above. When the initial measured resistance is substantially equal to the target resistance, the winding of the carbon nanotube sheet 94 is completed.
  • the calculation unit of the control unit 46 causes the resistance of the carbon nanotube device 2 to be approximately the target resistance based on the initial measured resistance and the above-described laminated resistance information, as in step S15.
  • the number of additional windings of the carbon nanotube sheet 94 required to be equal is determined (step S75).
  • step S73 the carbon nanotube sheet 94 passes over the three pairs of electrodes 22a, 22b, 22c and the three pairs of measuring electrodes 25a, 25b, 25c, and on the outer surface of the rotating body 42. It is wound.
  • the carbon nanotube sheet 94 is laminated between the three pairs of electrodes 22a, 22b, 22c (step S76). Also in step S76, the adhesive containing the conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42.
  • step S75 the number of additional windings may be obtained by the operator based on the measurement value obtained in step S74.
  • the rotating mechanism 43 may be operated by the operator and the rotating body 42 may be rotated by the additional winding number.
  • the rotation mechanism 43 is stopped. Then, as shown in FIG. 37, the carbon nanotube sheet 94 on the carbon nanotube structure 52 is cut at a cutting position between the electrode 22a and the measuring electrode 25a that are adjacent to each other in the circumferential direction.
  • the carbon nanotube sheet 94 may be cut on the electrode 22a.
  • the carbon nanotube sheet 94 is cut at two cutting positions located outside the connection region 421 in the circumferential direction and inside the pair of measurement electrodes 25a.
  • the laminated sheet-shaped connection sheet portion 21 extending in the circumferential direction in the connection region 421 is formed (step S77).
  • step S77 when the carbon nanotube sheet 94 is cut, the insulating sheet member 230 (see FIGS. 31 and 32) is also cut. As a result, the support sheet portion 23 extending in the circumferential direction is formed in the connection region 421.
  • the cutting of the carbon nanotube sheet 94 and the insulating sheet member 230 is performed by the cutting blade 47 such as a cutter similar to step S74, for example.
  • step S77 ends, the pair of electrodes 22a, the connection sheet portion 21 and the support sheet portion 23 are removed from the rotating body 42, and both ends of the connection sheet portion 21 in the longitudinal direction are paired with the pair of electrodes 22a, as in step S18. Then, the carbon nanotube device 2 is formed (step S78). Then, as in step S19, the carbon nanotube device 2 is housed inside the housing portion 31 to form the carbon nanotube heater 1 (step S79).
  • the numbers of the electrodes 22 and the measuring electrodes 25 arranged on the outer surface of the rotating body 42 are not limited to three pairs, and may be one pair, two pairs, or four pairs or more.
  • step S72 the step of arranging the pair of electrodes 22 and the pair of measuring electrodes 25 (step S72) and the tubular intermediate body 51 are performed.
  • step S73 step of measuring resistance between the pair of measurement electrodes 25 (step S74), step of stacking carbon nanotube sheets 94 (step S76), and step of forming connection sheet portion 21.
  • Step S77 a step of fixing both ends of the connection sheet portion 21 to the pair of electrodes 22 (step S78).
  • a pair of electrodes 22 is arranged at both ends of the connection region 421 extending in the circumferential direction on the outer surface of the rotating body 42 rotatable about the rotation axis J1 oriented in the axial direction. Further, the pair of measuring electrodes 25 are arranged outside the circumferential direction of the pair of electrodes 22 at positions sandwiching the connection region 421 and the pair of electrodes 22.
  • the rotator 42 is rotated by the initial number of turns, so that the carbon nanotube sheet 94 is wound on the outer surface of the rotator 42 while passing over the pair of electrodes 22 and the pair of measuring electrodes 25. It As a result, the tubular intermediate body 51 is formed in which the carbon nanotube sheets 94 are laminated in the radial direction around the rotating body 42.
  • step S74 the tubular intermediate body 51 is cut outside the pair of measuring electrodes 25 in the circumferential direction. Then, the resistance between the pair of measurement electrodes 25 electrically connected by the laminated sheet-shaped carbon nanotube structure 52 is measured.
  • the carbon nanotube structure 52 is a portion of the tubular intermediate body 51 that extends in the circumferential direction between the pair of measurement electrodes 25.
  • step S76 when the initial measured resistance, which is the resistance between the pair of electrodes 22 determined based on the measurement value obtained in step S74, is larger than the predetermined target resistance, the rotating body 42 is rotated to The carbon nanotube sheet 94 is wound around the outer surface of the rotating body 42 while passing over the pair of electrodes 22.
  • step S77 the carbon nanotube sheet 94 is cut outside the connection region 421 in the circumferential direction and inside the pair of measurement electrodes 25, so that the connection sheet portion in the laminated sheet shape extending in the circumferential direction in the connection region 421. 21 is formed.
  • the carbon nanotube device 2 By manufacturing the carbon nanotube device 2 by the manufacturing method, as in the case of the first manufacturing method, the influence of variations in the density of the carbon nanotubes in the carbon nanotube sheet 94 is suppressed, and the desired resistance (that is, It is possible to provide the carbon nanotube device 2 having a resistance substantially equal to the target resistance). Further, the carbon nanotube device 2 can be easily manufactured by the above manufacturing method. As described above, it is preferable that the pair of measuring electrodes 25 be arranged close to the pair of electrodes 22. Thereby, the resistance between the pair of electrodes 22 can be obtained with higher accuracy.
  • an adhesive is applied on the pair of measuring electrodes 25 between step S72 and step S73.
  • the carbon nanotube structure 52 and the measurement electrode 25 can be appropriately contacted with each other, and the contact resistance between the carbon nanotube structure 52 and the measurement electrode 25 can be reduced.
  • the accuracy of resistance measurement in step S74 can be improved.
  • the adhesive is more preferably a paste-like rosin.
  • the contact resistance can be reduced more preferably.
  • powdered rosin may be applied to the measurement electrode 25, and a solvent such as alcohol may be sprayed in a subsequent step to dissolve the rosin in the solvent to form a paste. The same applies to the fifth and sixth manufacturing methods of the carbon nanotube device 2 described later.
  • the configuration related to the resistance measurement is performed.
  • the degree of freedom in designing for example, the shape and arrangement of the measuring electrode 25
  • the rosin or the like is added to the measurement electrode 25 without considering the influence on the quality, life, etc. of the carbon nanotube device 2. It can be applied to reduce the contact resistance. The same applies to the fifth and sixth manufacturing methods of the carbon nanotube device 2.
  • step S81 the target number of turns corresponding to the target resistance of the carbon nanotube heater 1 is obtained based on the stacking resistance information, and the target Based on the number of turns, an initial number of turns less than the target number of turns is set (step S81).
  • the insulating sheet member 230 is attached to the outer surface of the rotating body 42, and the pair of electrodes 22 and the pair of electrodes for measurement are provided on the insulating sheet member 230.
  • the electrode 25 is attached (step S82).
  • the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction.
  • the pair of measurement electrodes 25 are also arranged at positions separated by 180° in the circumferential direction.
  • the circumferential angle between the pair of measuring electrodes 25 does not necessarily have to be 180°.
  • the conductive paste is applied onto each electrode 22.
  • the above-mentioned adhesive (for example, paste-like rosin) is applied onto each measurement electrode 25.
  • step S82 may be performed in parallel with step S81 or may be performed before step S81.
  • step S33 the rotating body 42 is rotated by the above-described initial number of windings, and the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is placed on the pair of electrodes 22 and the pair of electrodes 22. It is wound on the outer surface of the rotating body 42 while passing over the measuring electrode 25.
  • the cylindrical intermediate body 51 is formed in which the carbon nanotube sheets 94 are radially laminated around the rotating body 42 by the number of laminations equal to the initial winding number (step S83).
  • step S83 the adhesive containing the above-mentioned conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42 in the same manner as above. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer side surface of the rotating body 42 and is compacted onto the insulating sheet member 230 on the outer side surface.
  • step S84 the resistance between the pair of measuring electrodes 25 is measured (step S84).
  • step S84 the tubular intermediate body 51 is not cut.
  • the measurement value obtained in step S84 is sent to the control unit 46.
  • the control unit 46 obtains the initial measurement resistance, which is the resistance between the pair of electrodes 22, based on the measured value. As described above, when both the angle in the circumferential direction between the pair of electrodes 22 and the angle in the circumferential direction between the pair of measurement electrodes 25 are both 180°, the measured value is the initial measurement resistance.
  • the angle between the pair of measuring electrodes 25 in the circumferential direction is not 180°, the combined resistance of the parallel circuit described above is measured, and the pair of measurements is performed from the combined resistance, in substantially the same manner as in steps S34 and S52 described above.
  • the resistance between the working electrodes 25 is required.
  • the ratio of the circumferential distance between the pair of electrodes 22 to the circumferential distance between the pair of measuring electrodes 25 is multiplied by the resistance between the pair of measuring electrodes 25 to obtain the initial measurement resistance. Is required.
  • the initial measured resistance is greater than or equal to the target resistance described above. When the initial measured resistance is substantially equal to the target resistance, the winding of the carbon nanotube sheet 94 is completed.
  • step S85 the number of additional windings of the carbon nanotube sheet 94 is determined based on the initial measured resistance and the above-mentioned stacking resistance information as in step S35 (step S85).
  • the rotating body 42 is rotated by the number of additional windings, and the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 is placed on the pair of electrodes 22 and the pair of electrodes for measurement, as in step S36. It is wound on the outer surface of the rotating body 42 while passing over the electrode 25.
  • the carbon nanotube sheet 94 is laminated on the tubular intermediate body 51 to form a carbon nanotube sheet layer (step S86).
  • the adhesive containing the above-mentioned conductive additive is applied from the adhesive applying section 44 to the carbon nanotube sheet 94 wound around the rotating body 42. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed by the pressing roller 45 toward the outer surface of the rotating body 42 and is compacted on the tubular intermediate body 51.
  • step S86 ends, the pair of measuring electrodes 25 is removed from the rotating body 42. Then, as in step S37, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 (see FIG. 24) laminated on the pair of electrodes 22 are removed from the rotating body 42 together with the insulating sheet member 230. (Step S87).
  • step S87 ends, the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22 as in step S38 (step S88). Then, similarly to step S39, the tubular carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction together with the insulating sheet member 230 to be planar. In other words, the carbon nanotube sheet layer 53 between the pair of electrodes 22 is crushed in the thickness direction. As a result, the connection sheet portion 21 and the support sheet portion 23 that connect the pair of electrodes 22 are formed, and the formation of the carbon nanotube device 2 is completed (step S89). Then, as in step S40, the carbon nanotube device 2 is housed inside the housing portion 31. As a result, the carbon nanotube heater 1 (see FIG. 1) is formed (step S90).
  • the step of disposing the pair of electrodes 22 and the pair of measurement electrodes 25 (step S82), and the tubular intermediate body 51 are formed. (Step S83), measuring the resistance between the pair of measuring electrodes 25 (step S84), stacking the carbon nanotube sheet 94 (step S86), and stacking on the pair of electrodes 22. And a step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 (step S88).
  • step S82 on the outer surface of the rotating body 42 rotatable about the rotation axis J1 oriented in the axial direction, the pair of electrodes 22 are arranged at positions distant from each other in the circumferential direction, and the pair of electrodes 22 are positioned at positions distant from each other in the circumferential direction.
  • the measuring electrode 25 of is arranged.
  • step S83 the rotator 42 is rotated by the initial number of turns, so that the carbon nanotube sheet 94 is wound on the outer surface of the rotator 42 while passing over the pair of electrodes 22 and the pair of measuring electrodes 25. It As a result, the tubular intermediate body 51 is formed in which the carbon nanotube sheets 94 are laminated in the radial direction around the rotating body 42.
  • step S86 when the initially measured resistance, which is the resistance measured in step S84, is larger than the predetermined target resistance, the rotator 42 is rotated to cause the carbon nanotube sheet 94 to pass over the pair of electrodes 22. It is wound on the outer surface of the rotating body 42. As a result, the carbon nanotube sheet 94 is laminated on the tubular intermediate body 51.
  • the carbon nanotube device 2 By manufacturing the carbon nanotube device 2 by the manufacturing method, as in the case of the second manufacturing method described above, it is possible to suppress the influence of variations in the density of the carbon nanotubes in the carbon nanotube sheet 94, etc. It is possible to provide the carbon nanotube device 2 having a resistance substantially equal to the target resistance). Further, the carbon nanotube device 2 can be easily manufactured by the above manufacturing method. It is preferable that the pair of measuring electrodes 25 be arranged close to the pair of electrodes 22, as described above. Thereby, the resistance between the pair of electrodes 22 can be obtained with higher accuracy.
  • the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction. Further, in the step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 are removed from the rotating body 42, and the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22. Then, the carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction to be planar, thereby forming the connection sheet portion 21 connecting the pair of electrodes 22 (steps S87 to S89). Equipped with. Thereby, the carbon nanotube device 2 can be easily formed. Further, the number of carbon nanotube sheets stacked in the connection sheet portion 21 can be easily increased.
  • steps S61 to S62 shown in FIG. 28 may be performed instead of steps S87 to S89 (see FIG. 38).
  • the step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 includes the step of performing steps S87 to S89 or steps S61 to S62.
  • steps S61 to S62 as described above, by cutting the carbon nanotube sheet layer 53 and the pair of electrodes 22 at the central portions of the pair of electrodes 22, respectively, the connection sheet extending in the circumferential direction between the pair of electrodes 22. The part 21 is formed. Then, both ends of the connection sheet portion 21 are fixed to the pair of electrodes 22. Thereby, the carbon nanotube device 2 can be easily formed.
  • the pair of electrodes 22 does not necessarily have to be arranged at positions separated by 180° in the circumferential direction, as in the second manufacturing method.
  • the resistances of the one side and the other side of the pair of electrodes 22 are respectively obtained based on the measured value of the resistance between the pair of measurement electrodes 25 described above.
  • the above-described steps S61 to S62 are performed. As a result, two carbon nanotube devices 2 having different connection sheet portions 21 can be formed in parallel. The same applies to the sixth manufacturing method of the carbon nanotube device 2 described later.
  • a plurality of pairs of electrodes 22 may be arranged on the outer surface of the rotating body 42 in step S81.
  • the angles between the plurality of pairs of electrodes 22 may be the same or different.
  • the resistance between the pair of electrodes 22 of each set is obtained based on the measured value of the resistance between the pair of measurement electrodes 25 described above.
  • the above steps S61 to S62 are carried out for each pair of electrodes 22. Thereby, a plurality of carbon nanotube devices 2 can be formed in parallel. The same applies to the sixth manufacturing method of the carbon nanotube device 2.
  • the sixth manufacturing method is similar to the third manufacturing method described above, except that a measurement electrode other than the electrode 22 is used, as described later.
  • the insulating sheet member 230 is attached to the outer surface of the rotating body 42, and the pair of electrodes is provided on the insulating sheet member 230. 22 and a pair of measurement electrodes 25 are attached (step S101).
  • the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction.
  • the pair of measurement electrodes 25 are also arranged at positions separated by 180° in the circumferential direction.
  • the circumferential angle between the pair of measuring electrodes 25 does not necessarily have to be 180°. As illustrated in FIG. 41, it is preferable that the pair of measuring electrodes 25 be arranged close to the pair of electrodes 22. Similar to step S51, the conductive paste is applied onto each electrode 22. Further, similarly to step S72, the above-mentioned adhesive (for example, paste-like rosin) is applied onto each measurement electrode 25.
  • the above-mentioned adhesive for example, paste-like rosin
  • step S52 the rotator 42 is rotated to cause the carbon nanotube sheet 94 pulled out from the carbon nanotube array 91 to pass over the pair of electrodes 22 and the pair of measuring electrodes 25. It is wound on the outer surface of the rotating body 42 (step S102).
  • step S102 as in step S52, the adhesive containing the conductive additive is applied to the carbon nanotube sheet 94 wound around the rotating body 42 from the adhesive applying section 44 (see FIG. 39). To be done. Further, the carbon nanotube sheet 94 wound around the rotating body 42 is pressed toward the outer side surface of the rotating body 42 by the pressing roller 45 (see FIG. 39) and is compacted on the insulating sheet member 230 on the outer side surface. To be done.
  • step S102 the winding of the carbon nanotube sheet 94 is performed in parallel with the continuous measurement of the resistance between the pair of measurement electrodes 25 by the resistance measuring device 48. Then, the resistance between the pair of electrodes 22 is continuously obtained based on the measurement value obtained by the resistance measuring device 48.
  • the method of obtaining the resistance between the pair of electrodes 22 from the measured value of the resistance between the pair of measurement electrodes 25 is the same as in step S84 described above.
  • step S102 is continued until the resistance between the pair of electrodes 22 reaches a predetermined target resistance, whereby the tubular carbon nanotube sheet layer 53 laminated on the pair of electrodes 22 is formed (step. S103).
  • the pair of measuring electrodes 25 is removed from the rotating body 42, as in steps S87 to S89.
  • the pair of electrodes 22, and the tubular carbon nanotube sheet layer 53 laminated on the pair of electrodes 22 are removed from the rotating body 42 together with the insulating sheet member 230 (step S104), and the carbon nanotube sheet layer 53 is formed.
  • the tubular carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction together with the insulating sheet member 230 to be planar.
  • the connection sheet portion 21 and the support sheet portion 23 that connect the pair of electrodes 22 are formed, and the formation of the carbon nanotube device 2 is completed (step S106).
  • steps S61 to S62 shown in FIG. 28 may be performed instead of steps S104 to S106.
  • the carbon nanotube sheet layer 53, the pair of electrodes 22, and the insulating sheet member 230 are cut at substantially the center of each of the pair of electrodes 22 in the longitudinal direction.
  • the two connection sheet portions 21 extending in the circumferential direction between the pair of electrodes 22 are formed (step S61).
  • both ends of each connection sheet portion 21 are fixed to the pair of electrodes 22 to form two carbon nanotube devices 2 (step S62).
  • the carbon nanotube device 2 When the carbon nanotube device 2 is formed, the carbon nanotube device 2 is housed inside the housing unit 31 as in step S57. As a result, the carbon nanotube heater 1 (see FIG. 1) is formed (step S107).
  • step S101 the step of arranging the pair of electrodes 22 and the pair of measurement electrodes 25 (step S101), and the step between the pair of measurement electrodes 25 are performed.
  • Winding the carbon nanotube sheet 94 while measuring the resistance step S102
  • step S103 forming the carbon nanotube sheet layer 53
  • step S105 fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22.
  • step S101 a pair of electrodes 22 are arranged at positions distant from each other in the circumferential direction on the outer surface of the rotating body 42 rotatable about the rotation axis J1 oriented in the axial direction, and a pair of measurements are made at positions distant from each other in the circumferential direction.
  • the electrode 25 is arranged.
  • step S102 the carbon nanotube sheet 94 is wound around the outer surface of the rotating body 42 while passing over the pair of electrodes 22 and the pair of measuring electrodes 25 by rotating the rotating body 42.
  • step S103 the step S102 is continued until the resistance between the pair of electrodes 22 obtained based on the measurement value obtained in step S102 reaches a predetermined resistance, so that the electrodes 22 are stacked on the pair of electrodes 22.
  • the carbon nanotube sheet layer 53 is formed.
  • the carbon nanotube device 2 By manufacturing the carbon nanotube device 2 by the manufacturing method, as in the case of the third manufacturing method, the influence of variations in the density of the carbon nanotubes in the carbon nanotube sheet 94 is suppressed, and the desired resistance (that is, It is possible to provide the carbon nanotube device 2 having a resistance substantially equal to the target resistance). Further, the carbon nanotube device 2 can be easily manufactured by the above manufacturing method. It is preferable that the pair of measuring electrodes 25 be arranged close to the pair of electrodes 22, as described above. Thereby, the resistance between the pair of electrodes 22 can be obtained with higher accuracy.
  • step S101 the pair of electrodes 22 are arranged at positions separated by 180° in the circumferential direction.
  • step of fixing the carbon nanotube sheet layer 53 to the pair of electrodes 22 includes a step of performing steps S104 to S106 or steps S61 to S62.
  • steps S104 to S106 after the completion of step S103, the pair of electrodes 22 and the tubular carbon nanotube sheet layer 53 are removed from the rotating body 42, and the carbon nanotube sheet layer 53 is fixed to the pair of electrodes 22. Then, the carbon nanotube sheet layer 53 between the pair of electrodes 22 is pressed in the thickness direction to have a planar shape, whereby the connection sheet portion 21 that connects the pair of electrodes 22 is formed. Thereby, the carbon nanotube device 2 can be easily manufactured. Further, the number of carbon nanotube sheets stacked in the connection sheet portion 21 can be easily increased.
  • steps S61 to S62 by cutting the carbon nanotube sheet layer 53 and the pair of electrodes 22 at the central portions of the pair of electrodes 22, respectively, the connection sheet extending in the circumferential direction between the pair of electrodes 22.
  • the part 21 is formed.
  • both ends of the connection sheet portion 21 are fixed to the pair of electrodes 22.
  • the carbon nanotube device 2 can be easily manufactured.
  • the shape of the rotating body 42 does not necessarily have to be a substantially cylindrical shape or a substantially cylindrical shape, and may be various shapes.
  • the rotating body 42 may have, for example, a columnar or tubular shape having a rectangular or polygonal cross section, or may have a flat plate shape.
  • the electrode 22 arranged on the flat plate-shaped rotating body 42 and the carbon nanotube sheet 94 wound around the rotating body 42 are not removed from the rotating body 42, and together with the rotating body 42. It may be used as the carbon nanotube device 2.
  • the setting of the initial number of windings of the carbon nanotube sheet 94, the determination of the number of additional windings, and the like are not necessarily performed by the control unit 46, and the operator does not have to do so. It may be performed manually.
  • laminated resistance information does not necessarily have to be acquired.
  • the setting of the initial winding number in steps S11, S31, S71, S81 may be performed in advance based on, for example, an experiment in advance.
  • the cutting of the cylindrical intermediate body 51, the measurement of the resistance between the pair of electrodes 22 (step S14), and the stacking of the carbon nanotube sheet 94 (step S16) are repeated, and the pair in step S14 is repeated.
  • steps S17 to S19 are performed. The same applies to the fourth manufacturing method.
  • step S34 the resistance measurement between the pair of electrodes 22 (step S34) and the lamination of the carbon nanotube sheet 94 (step S36) are repeated, and the resistance between the pair of electrodes 22 in step S34 becomes the target resistance.
  • steps S37 to S40 are performed. The same applies to the fifth manufacturing method.
  • the application of the conductive paste to the electrodes 22 in the first manufacturing method is performed after the winding of the carbon nanotube sheet 94 in step S13, if it is performed before the electrodes 22 are bent in step S18. Alternatively, it may be performed in parallel with step S13. Alternatively, the application of the conductive paste to the electrode 22 may be omitted. Further, the heating of the electrode 22 may be omitted. The same applies to the second to sixth manufacturing methods.
  • the adhesive applied to the measuring electrode 25 in the fourth manufacturing method may be an insulating paste other than the pasty rosin as described above, or a conductive paste such as a conductive adhesive. May be Alternatively, the application of the adhesive to the measuring electrode 25 may be omitted. The same applies to the fifth and sixth manufacturing methods.
  • any two electrodes 22 of the three or more electrodes 22 serve as a pair of electrodes 22.
  • the connection sheet portion 21 that is selected and connects the pair of electrodes 22 may be formed. Thereby, it is possible to easily change the length of the connection sheet portion 21.
  • the structure of the device manufacturing apparatus 4 is not limited to those illustrated in FIGS. 3, 4, 23, 29, 31, 32, 39 and 41, and may be variously modified.
  • the adhesive applying section 44 and/or the pressing roller 45 may be omitted.
  • a suction port group for adsorbing the carbon nanotube sheet 94 may be provided on the outer surface of the rotating body 42. The suction port group may be provided together with the pressing roller 45.
  • the device manufacturing apparatus 4 is provided with a swinging mechanism that swings the substrate holding unit 41 in the axial direction, and the carbon nanotube sheet 94 is pulled out from the carbon nanotube array 91 on the substrate 92 that swings in the axial direction.
  • a relatively large area connection sheet portion 21 having a large width may be manufactured.
  • the carbon nanotubes in the low density region remain (that is, It is possible to suppress problems such as non-uniform density of the carbon nanotube sheet 94 due to the phenomenon that the carbon nanotube sheet 94 remains on the substrate 92 without being pulled out.
  • the carbon nanotube sheet 94 is described as being pulled out from the carbon nanotube array 91 in a state of standing on the substrate 92, but it is pulled out from the carbon nanotube array 91 after being peeled off from the substrate 92. Good.
  • the support sheet portion 23 may be omitted. Further, the plurality of convex portions 222 of the electrode 22 may be omitted.
  • the shape of the connecting accessory 24 is not limited to the connecting accessories 24a to 24c shown in FIGS. 19 to 21, and may be variously modified.
  • connection sheet portion 21 and the electrode 22 are not necessarily fixed by sandwiching the end portion of the connection sheet portion 21 between the folded electrode 22 and the connection aid 24 needs to be used. Absent.
  • connection sheet portion 21 of the carbon nanotube device 2 may be variously changed according to the application.
  • the diagonal length of the connection sheet portion 21 does not necessarily have to be 200 mm or more, and may be less than 200 mm.
  • the shape of the connection sheet portion 21 in plan view may be a shape other than a substantially rectangular shape (for example, a trapezoid).
  • the heat dissipation portion 34 does not necessarily have to overlap the entire connection sheet portion 21 in the vertical direction, and may overlap only part of the connection sheet portion 21, for example.
  • a reflecting portion that reflects heat from the carbon nanotube device 2 may be provided on the main surface and the side surface of the housing portion 31 opposite to the heat radiating portion 34.
  • the reflecting portion is, for example, a sheet-shaped member in which a metal foil is provided on the inner surface of the heat insulating sheet. Thereby, the heat from the carbon nanotube device 2 can be efficiently collected in the heat dissipation portion 34.
  • a film-like or thin plate-like member similar to the heat dissipation portion 34 may be provided on the main surface and the side surface of the accommodation portion 31 on the side opposite to the heat dissipation portion 34.
  • the heat dissipation part 34 may be omitted.
  • the temperature sensor 36 may be omitted.
  • the accommodating portion 31 of the carbon nanotube heater 1 does not necessarily have flexibility and may be a hard member.
  • the number of carbon nanotube devices 2 housed in the housing 31 may be two or more.
  • the carbon nanotube heater 1 may further include, in addition to the carbon nanotube device 2, another carbon nanotube device having the same structure as the carbon nanotube device 2 and housed inside the housing 31. ..
  • the other carbon nanotube device is preferably arranged adjacent to the side of the carbon nanotube device 2, and the heat dissipation portion 34 is in a direction perpendicular to the main surface of the connection sheet portion 21 of the carbon nanotube device 2.
  • the entire connection sheet portion 21 of the carbon nanotube device 2 and the entire connection sheet portion of the other carbon nanotube device overlap. This can improve the temperature uniformity in the connection sheet portion of the plurality of carbon nanotube devices.
  • the carbon nanotube heater 1 may be provided with two heat dissipation portions 34 that overlap with the carbon nanotube device 2 and the other carbon nanotube devices, respectively. Further, in the carbon nanotube heater 1 including the plurality of carbon nanotube devices 2, the pair of electrodes 22 of the plurality of carbon nanotube devices 2 are made common, and electric power is supplied to the plurality of connection sheet portions 21 by the pair of common electrodes. Good.
  • the shape of the carbon nanotube heater 1 may be variously changed according to the application.
  • the shape of the carbon nanotube heater 1 in plan view may be a shape other than a substantially rectangular shape.
  • the carbon nanotube heater 1 does not necessarily have to be a thin sheet heater, but may be a relatively thick member.
  • the carbon nanotube device 2 does not necessarily have to be used as a heat source of the carbon nanotube heater 1, but can be used for various purposes.
  • the carbon nanotube device 2 may be used as a thermostat or various sensors.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Une feuille de nanotubes de carbone est enroulée sur la surface extérieure d'un corps rotatif par un nombre d'enroulements initiaux tout en passant sur une paire d'électrodes, où est formé un intermédiaire cylindrique (étape S13). Ensuite, l'intermédiaire cylindrique est coupé à l'extérieur d'une zone de connexion, et la résistance entre la paire d'électrodes est mesurée (étape S14). Ensuite, la feuille de nanotubes de carbone est en outre stratifiée (étape S16). Ensuite, une section de feuille de connexion est formée par découpe de la feuille de nanotubes de carbone à l'extérieur de la zone de connexion (étape S17). Ensuite, les deux parties d'extrémité de la section de feuille de connexion sont fixées à la paire d'électrodes (étape S18). Ceci permet d'alimenter ce dispositif en nanotubes de carbone ayant une résistance souhaitée.
PCT/JP2020/005907 2019-02-21 2020-02-14 Procédé de fabrication de dispositif en nanotubes de carbone, dispositif en nanotubes de carbone, et dispositif de chauffage en nanotubes de carbone WO2020170991A1 (fr)

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JPH04259785A (ja) * 1991-02-12 1992-09-16 Mamoru Tsukuda 可変容量シート状発熱体および同シート状発熱体の製造方法
JP2005011651A (ja) * 2003-06-18 2005-01-13 Idemitsu Kosan Co Ltd 面状発熱体、この面状発熱体を用いた暖房装置及び面状発熱体の製造方法
US20130146214A1 (en) * 2011-12-09 2013-06-13 Beijing Funate Innovation Technology Co., Ltd. Method for making heaters

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JPH04259785A (ja) * 1991-02-12 1992-09-16 Mamoru Tsukuda 可変容量シート状発熱体および同シート状発熱体の製造方法
JP2005011651A (ja) * 2003-06-18 2005-01-13 Idemitsu Kosan Co Ltd 面状発熱体、この面状発熱体を用いた暖房装置及び面状発熱体の製造方法
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Publication number Priority date Publication date Assignee Title
JP2022045116A (ja) * 2020-09-08 2022-03-18 日本車輌製造株式会社 ヒータ
JP7461258B2 (ja) 2020-09-08 2024-04-03 日本車輌製造株式会社 ヒータおよびヒータの使用方法

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