WO1991010238A1 - Cable isole - Google Patents

Cable isole Download PDF

Info

Publication number
WO1991010238A1
WO1991010238A1 PCT/JP1990/001700 JP9001700W WO9110238A1 WO 1991010238 A1 WO1991010238 A1 WO 1991010238A1 JP 9001700 W JP9001700 W JP 9001700W WO 9110238 A1 WO9110238 A1 WO 9110238A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal oxide
insulated wire
oxide layer
insulating metal
conductor
Prior art date
Application number
PCT/JP1990/001700
Other languages
English (en)
Japanese (ja)
Inventor
Kazuo Sawada
Shinji Inazawa
Kouichi Yamada
Original Assignee
Sumitomo Electric Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries, Ltd. filed Critical Sumitomo Electric Industries, Ltd.
Priority to EP91901438A priority Critical patent/EP0460238B1/fr
Priority to DE69033532T priority patent/DE69033532D1/de
Publication of WO1991010238A1 publication Critical patent/WO1991010238A1/fr
Priority to US07/989,064 priority patent/US5336851A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
    • H01B3/105—Wires with oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat

Definitions

  • the present invention relates to an insulated wire, and more particularly, to an insulated wire and a fire-resistant wire that can be used in a high-temperature or high-vacuum environment.
  • heat-resistant organic materials such as polyimide-fluorinated resin are used. Insulated wires in which a resin is coated on a conductor are used.
  • insulated wires in which a conductor is passed through a ceramic insulator tube or metal oxide such as magnesium oxide
  • a ceramic insulator tube or metal oxide such as magnesium oxide
  • Ml. Cape Insulated Cable (Ml) is used in which a conductor is passed through a heat-resistant alloy tube made of a stainless alloy or the like packed with fine particles.
  • a glass braided insulated wire that uses a glass fiber woven fabric as an insulating member can be given.
  • An insulated wire having good heat resistance, insulation properties and heat dissipation properties is obtained by applying anodizing treatment to an aluminum alloy wire rod. Anodized wires exist.
  • the temperature at which the insulation can be maintained is at most about 300 ° C. Therefore, such an insulated wire could not be used for applications requiring insulation even at higher temperatures.
  • the above-mentioned insulated wire in which a conductor is passed through a ceramic insulator tube has the disadvantage that it can maintain insulation even at high temperatures, but has poor flexibility.
  • the above-mentioned MI cable can maintain insulation even at high temperatures, and is more flexible than the above-mentioned type in which a conductor is passed through a ceramic insulator tube, but is bent at a large curvature. In some cases, there were difficulties.
  • the above-mentioned glass braided insulated wire can maintain insulation even at high temperatures and has good flexibility. However, they could easily emit dust and could not be used in an environment that required a high degree of vacuum.
  • the alumite wire described above can maintain insulation even at high temperatures, and has some flexibility.
  • the conductors used for electric wires were limited to aluminum, the use of electric wires was limited.
  • the insulated wire has a single ceramic layer and a small thickness, and even though it has good flexibility, it is difficult to increase the insulation breakdown voltage. Atsuta.
  • An object of the present invention is to solve the problems of the conventional insulated wire as described above and to provide an insulated wire having the following properties.
  • An insulated wire according to the present invention provides a conductor, a first insulating metal oxide layer formed around the conductor, and a ceramic mixed by addition formed around the first insulating metal oxide layer.
  • first insulating metal oxide layer and the Z or second insulating metal oxide layer are selected from the group consisting of alkoxides or organic acid salts of Si, Zr, AI, and Ti.
  • a precursor of a metal oxide containing at least one compound can be applied around the conductor and formed into a ceramic by heating using a sol-gel method or a thermal decomposition method. it can.
  • the ceramic particles contained in the second insulating metal oxide layer of the present invention can realize a more preferable insulated wire if it is in the form of a fine plate.
  • the insulated wire is more flexible. Furthermore, if the outside of the second insulating metal oxide layer is coated with an insulating material containing an organic material, an insulated wire having a protective coating can be provided.
  • the conductor is not particularly limited as long as it has conductivity. If the shape and material are selected according to the application such as a thermocouple or a flexible printed circuit, for example, Good.
  • the insulated wire of the present invention includes an insulating layer of a metal oxide having a very high melting point around the conductor, the insulated wire retains insulation even at a high temperature as compared with a conventional insulated wire coated with a heat-resistant organic resin. be able to.
  • the insulated wire of the present invention does not emit gas, it can be used in a high vacuum environment.
  • the ceramic particles are added to the insulating metal oxide layer by adding the ceramic particles, the insulating metal oxide layer can be thickened and the insulated wire having a high dielectric breakdown voltage can be obtained. Can be obtained.
  • the first insulating metal oxide layer is in close contact with the conductor, the first insulating metal oxide layer is excellent in flexibility and can maintain insulation even when subjected to extreme deformation in bending or the like.
  • the second insulative metal oxide layer can be easily thickened by applying a ceramic precursor added with ceramic particles to a conductor and baking the conductor. It has high insulation properties. However, if only this layer is formed around the conductor, the adhesion to the conductor and the bonding of the particles in the layer are second.
  • the first layer By forming the above-mentioned second layer on top of one layer, even if a minute crack is generated in the second layer due to extreme deformation in bending or the like, the first layer will stop it and the insulating layer High insulation properties can be maintained as a whole.
  • the sol-gel method can be used from these solutions.
  • An oxide precursor is prepared using a method such as heat treatment or thermal decomposition, and the precursor is applied to the periphery of the conductor and further baked to form a uniform insulating layer. Can be.
  • the ceramic particles contained in the second insulating metal oxide layer by addition before the coating are in the form of a fine plate, thus, an insulated wire having a higher breakdown voltage can be obtained.
  • the thickness of the first insulating metal oxide layer is 1 to 10 ⁇ m, an insulated wire having more excellent flexibility can be obtained.
  • a protective coating containing an organic material on the outside of the second insulating metal oxide layer it can be used as a fire-resistant electric wire.
  • FIG. 1 shows a first insulating silicon oxide layer having a thickness of 35 mm and a second insulating metal oxide having a thickness of 35 m around a 1 mm-diameter nickel-plated copper wire according to the present invention. It is sectional drawing of the insulated wire which formed the layer.
  • FIG. 2 is a cross-sectional view of an insulated wire obtained by coating the three insulated wires shown in FIG. 1 with a polyolefin resin mixed with magnesium hydroxide according to the present invention.
  • a nickel-plated copper wire with a diameter of 1 mm was used as the conductor. 1 mol% of nitric acid was added to a mixed solution of 4 mol% of tetraethoxysilane, 24 mol% of water and 71 mol% of ethyl alcohol. After this solution was applied to the above-mentioned Nigel-coated copper wire, it was baked continuously at a temperature of 500 ° C. to form a first insulating silicon oxide layer having a thickness of 5 m.
  • a solution consisting of 4 mol% of tetraethylethoxysilane, 1 mol% of tetraethylethoxy zirconium, 1 mol% of water and 94 mol% of ethyl alcohol has a mean particle size of ceramic particles.
  • a mixture of 2 parts of 2 force with respect to 10 parts of the above mixed solution was applied around the first insulating silicon oxide layer, and then continuously at a temperature of 600 ° C. Then, a second insulating metal oxide layer having a thickness of 35 m was formed.
  • FIG. 1 is a cross-sectional view of the insulated wire formed by the above process.
  • a first insulating metal oxide layer 13 is formed around a conductor in which a nickel plating layer 12 is formed around copper 11 and further contains ceramic particles.
  • a second insulating metal oxide layer 14 is formed.
  • the dielectric breakdown voltage was measured to be about 500 V when only the first insulating metal oxide layer was formed. Then, the dielectric breakdown voltage of the insulated wire formed up to the second insulating metal oxide layer containing the ceramic particles was measured and found to be 1200 V or more.
  • the present invention can provide an insulated wire having a high breakdown voltage.
  • the insulation was maintained even if the insulated wire formed by the above process was held at 850 ° C for 30 minutes. Therefore, it has become clear that the insulated wire obtained by the present invention can maintain insulation even at high temperatures.
  • Example 2 Three insulated wires obtained in Example 1 were used, and three were covered with a polyolefin-based resin mixed with magnesium hydroxide to form one wire.
  • FIG. 2 is a cross-sectional view of the electric wire obtained in this manner.
  • Three insulated wires 21 are collected, and each is covered with magnesium hydroxide-mixed polyolefin resin 22 to form one wire.
  • the wire continued to function as a wire even after being held at 850 ° C for 30 minutes.
  • the insulated wire according to the present invention can maintain insulation even at a high temperature, has excellent flexibility, does not emit gas, can use various types of conductors, and has a higher insulation breakdown. It can be advantageously used for insulated wires, fire-resistant wires, thermocouples and flexible printed circuits that require voltage.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Insulated Conductors (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

L'invention se rapporte à un câble isolé qui comporte un conducteur, une première couche d'oxyde métallique isolante formée autour du conducteur et une seconde couche d'oxyde métallique isolante formée autour de la première couche et contenant des grains de céramique. On peut former les couches d'oxyde métallique isolantes en convertissant un précurseur de l'oxyde métallique en une céramique grâce à un procédé du type sol-gel ou du type à décomposition thermique. En ce qui concerne les grains de céramique à mélanger, des grains en forme de microplaquettes sont préférés. Ce câble isolé se caractérise par une tension de rupture diélectrique élevée et par une excellente flexibilité, il ne dégage pas de gaz et il peut conserver son isolation même à haute température.
PCT/JP1990/001700 1989-12-27 1990-12-26 Cable isole WO1991010238A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91901438A EP0460238B1 (fr) 1989-12-27 1990-12-26 Cable isole
DE69033532T DE69033532D1 (de) 1989-12-27 1990-12-26 Isolierter draht
US07/989,064 US5336851A (en) 1989-12-27 1992-12-11 Insulated electrical conductor wire having a high operating temperature

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1/343489 1989-12-27
JP34348989A JPH03201311A (ja) 1989-12-27 1989-12-27 絶縁電線

Publications (1)

Publication Number Publication Date
WO1991010238A1 true WO1991010238A1 (fr) 1991-07-11

Family

ID=18361918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001700 WO1991010238A1 (fr) 1989-12-27 1990-12-26 Cable isole

Country Status (5)

Country Link
EP (1) EP0460238B1 (fr)
JP (1) JPH03201311A (fr)
CA (1) CA2050339C (fr)
DE (1) DE69033532D1 (fr)
WO (1) WO1991010238A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2698937B2 (ja) * 1990-11-13 1998-01-19 矢崎総業株式会社 セラミックスコーティング耐熱絶縁電線
US7795538B2 (en) 2007-11-06 2010-09-14 Honeywell International Inc. Flexible insulated wires for use in high temperatures and methods of manufacturing
GB0810572D0 (en) * 2008-06-10 2008-07-16 Univ Teeside Electrically insulating coating and method
US8680397B2 (en) 2008-11-03 2014-03-25 Honeywell International Inc. Attrition-resistant high temperature insulated wires and methods for the making thereof
GB201308704D0 (en) * 2013-05-15 2013-06-26 Rolls Royce Plc Electrical apparatus encapsulant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136009A (en) * 1977-05-04 1978-11-28 Riken Keikinzoku Kogyo Kk Aluminium oxide structures
JPS5818809A (ja) * 1981-07-24 1983-02-03 株式会社デンソー 耐過負荷絶縁電線及びその製造方法
JPH0238585A (ja) * 1988-06-14 1990-02-07 Gte Lab Inc 耐摩耗性物品及び製造方法
JPH02123618A (ja) * 1988-11-02 1990-05-11 Opt D D Meruko Lab:Kk 耐熱性絶縁電線

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63281313A (ja) * 1987-05-12 1988-11-17 Sumitomo Electric Ind Ltd 耐熱電線

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136009A (en) * 1977-05-04 1978-11-28 Riken Keikinzoku Kogyo Kk Aluminium oxide structures
JPS5818809A (ja) * 1981-07-24 1983-02-03 株式会社デンソー 耐過負荷絶縁電線及びその製造方法
JPH0238585A (ja) * 1988-06-14 1990-02-07 Gte Lab Inc 耐摩耗性物品及び製造方法
JPH02123618A (ja) * 1988-11-02 1990-05-11 Opt D D Meruko Lab:Kk 耐熱性絶縁電線

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0460238A4 *

Also Published As

Publication number Publication date
CA2050339C (fr) 1997-12-02
DE69033532D1 (de) 2000-06-08
EP0460238A1 (fr) 1991-12-11
EP0460238B1 (fr) 2000-05-03
CA2050339A1 (fr) 1991-06-28
JPH03201311A (ja) 1991-09-03
EP0460238A4 (en) 1992-11-25

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