WO2015037602A1 - ケーブル - Google Patents

ケーブル Download PDF

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Publication number
WO2015037602A1
WO2015037602A1 PCT/JP2014/073885 JP2014073885W WO2015037602A1 WO 2015037602 A1 WO2015037602 A1 WO 2015037602A1 JP 2014073885 W JP2014073885 W JP 2014073885W WO 2015037602 A1 WO2015037602 A1 WO 2015037602A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating layer
cable
degrees
hardness
inner coating
Prior art date
Application number
PCT/JP2014/073885
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
孝哉 小堀
祐司 越智
智 橋本
Original Assignee
住友電気工業株式会社
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 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Priority to MX2016001015A priority Critical patent/MX349094B/es
Priority to DE112014004143.2T priority patent/DE112014004143T5/de
Priority to CN201480041983.1A priority patent/CN105637596B/zh
Publication of WO2015037602A1 publication Critical patent/WO2015037602A1/ja

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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

Definitions

  • the present invention relates to a cable having a pair of insulated wires twisted together.
  • a coating layer is provided on the outside of a multi-core stranded wire in which a plurality of insulated wires are twisted, and the inner layer of the coating layer is an ethylene vinyl acetate copolymer (EVA) or an ethylene ⁇ -olefin copolymer
  • EVA ethylene vinyl acetate copolymer
  • a cable is known in which the outer layer is made of thermoplastic polyurethane or the like and is subjected to a crosslinking treatment (see, for example, Patent Document 1).
  • the object of the present invention is to provide a cable that is difficult to have a wire rod.
  • the cable of the present invention A pair of insulated wires twisted together; An inner covering layer made of non-crosslinked polyurethane covering the periphery of the pair of insulated wires; An outer coating layer made of non-crosslinked polyurethane covering the periphery of the inner coating layer,
  • the inner coating layer has a Shore A hardness of 90 degrees or more and 100 degrees or less, The hardness of the outer coating layer is not less than 80 degrees and not more than 90 degrees in Shore A hardness, and is 5 to 10 degrees smaller than the hardness of the inner coating layer.
  • the multi-core cable according to the embodiment of the present invention is (1) a pair of insulated wires twisted together; An inner covering layer made of non-crosslinked polyurethane covering the periphery of the pair of insulated wires; An outer coating layer made of non-crosslinked polyurethane covering the periphery of the inner coating layer,
  • the inner coating layer has a Shore A hardness of 90 degrees or more and 100 degrees or less, The hardness of the outer coating layer is not less than 80 degrees and not more than 90 degrees in Shore A hardness, and is 5 to 10 degrees smaller than the hardness of the inner coating layer.
  • the inner coating layer and the outer coating layer are made of non-crosslinked polyurethane, the processing cost for crosslinking is unnecessary, and cost reduction can be realized. Further, when the Shore A hardness of the inner coating layer and the outer coating layer is in the above range, it is difficult to cause wire wrinkles when the cable is bent, and it is excellent in workability and handleability.
  • Each of the pair of insulated wires includes a conductor and an insulator covering the conductor,
  • the insulator is preferably made of cross-linked polyethylene. Since the insulator of the insulated wire is cross-linked, the heat resistance of the insulated wire can be maintained.
  • the cross-sectional area of the conductor is 0.25 mm 2 or more and 0.5 mm 2 or less.
  • the thickness of the outer coating layer is 0.2 mm or greater and 0.6 mm or less.
  • the cable 10 includes two insulated wires 11 in a set.
  • the insulated wires 11 are constituted by a so-called twisted pair method in which the insulated wires 11 are twisted together.
  • the insulated wires 11 are all wires in which the conductor 12 is covered with the insulator 13.
  • the conductor 12 of the insulated wire 11 is formed of, for example, a stranded wire obtained by twisting three stranded wires obtained by twisting 16 copper alloy wires having an outer diameter of 0.08 mm.
  • the outer diameter of the conductor 12 is, for example, 0.82 mm.
  • the cross-sectional area of the conductor 12 is 0.25 mm 2 .
  • a flame-retardant polyethylene As a material of the insulator 13 at this time, it is preferable to use a flame-retardant polyethylene.
  • the outer diameter of the insulator 13 is 1.4 mm, for example.
  • the insulated electric wire 11 configured in this way is irradiated with an electron beam and subjected to crosslinking treatment.
  • the insulator 13 may be formed of a flame retardant polyolefin resin.
  • the periphery of the pair of insulated wires 11 twisted in pairs is covered with an inner coating layer 21.
  • the inner coating layer 21 is made of non-crosslinked polyurethane that is not crosslinked.
  • the inner covering layer 21 has a function of improving the roundness in the cross section of the cable 10.
  • the periphery of the inner coating layer 21 is covered with the outer coating layer 22.
  • the outer coating layer 22 is made of non-crosslinked polyurethane that is not crosslinked. Thereby, the outer coating layer 22 can obtain an excellent heat fusion property with PBT or nylon of a molding material constituting various devices.
  • a block copolymer As the non-crosslinked polyurethane constituting the inner coating layer 21 and the outer coating layer 22, a block copolymer can be exemplified.
  • the block copolymer has a polyurethane portion as a hard segment and an amorphous polymer as a soft segment.
  • the polyurethane part is composed of a diisocyanate such as MDI or TDI and a diol such as ethylene glycol.
  • amorphous polymer polyether, polyester, polycarbonate or the like is used.
  • polyether-based non-crosslinked polyurethane can be suitably used from the viewpoints of flexibility, hydrolysis resistance, low-temperature bending characteristics, and the like.
  • the outer diameter of the inner coating layer 21 is, for example, 3.4 mm, and the outer diameter of the outer coating layer 22 is, for example, 4.0 mm.
  • the cable 12 can be used with the cross-sectional area of the conductor 12 of each insulated wire 11 being 0.3 mm 2 and the outer diameter of the insulator 13 being 1.7 mm.
  • the outer diameter of the inner coating layer 21 is 4.4 mm, and the outer diameter of the outer coating layer is 5.0 mm.
  • a cable in which the cross-sectional area of the conductor 12 of each insulated wire 11 is 0.5 mm 2 and the outer diameter of the insulator 13 is 2.0 m can be used.
  • the outer diameter of the inner coating layer 21 is 4.6 mm
  • the outer diameter of the outer coating layer is 6.2 mm.
  • the thickness dimensions of the insulator 13, the inner coating layer 21, and the outer coating layer 22 are determined from the electrical characteristics and mechanical characteristics if the cross-sectional area (outer diameter) of the conductor 12 is determined.
  • the thickness of the outer covering layer 22 is set to 0.2 to It may be in the range of 0.6 mm.
  • the thickness of the outer coating layer 22 is preferably 0.3 mm or more, for example.
  • the hardness (Shore A hardness) of the inner coating layer 21 is 90 degrees or more and 100 degrees or less, and particularly preferably 95 degrees. Further, the hardness (Shore A hardness) of the outer coating layer 22 is not less than 80 degrees and not more than 90 degrees, and particularly preferably 85 degrees. That is, the Shore A hardness of the outer coating layer 22 is set to be 5 to 10 degrees smaller than the Shore A hardness of the inner coating layer 21.
  • the cable 10 of the present embodiment configured as described above, first, a pair of insulated wires 11 is twisted. Then, the inner coating layer 21 is formed around the pair of insulated wires 11 that are twisted in pairs, and the outer coating layer 22 is formed on the outer periphery of the inner coating layer 21.
  • the processing cost for the crosslinking treatment becomes unnecessary, and the cost can be reduced. Can be realized.
  • the hardness of the inner coating layer 21 is 90 degrees or more and 100 degrees or less in Shore A hardness
  • the hardness of the outer coating layer 22 is 80 degrees or more and 90 degrees or less in Shore A hardness, and is 5 more than the hardness of the inner coating layer 21.
  • the insulator 13 of the insulated wire 11 is made of crosslinked polyethylene, the insulated wire can be used even if the inner coating layer 21 and the outer coating layer 22 are not crosslinked. The heat resistance of 11 can be sufficiently maintained.
  • the cross-sectional area of the conductor 12 of the insulated wire 11 is 0.25 mm 2 to 0.5 mm 2
  • the thickness of the outer covering layer 22 is 0.2 to 0. Since it is 6 mm, the effect of reducing wire wrinkles can be sufficiently obtained.
  • Example 2 A wire rod evaluation test was performed using the cable of this embodiment in which the inner coating layer and the outer coating layer are made of non-crosslinked flame-retardant polyurethane.
  • the hardness of the inner coating layer was 90 to 100 degrees, and the hardness of the outer coating layer was 80 to 90 degrees.
  • a cable cut to a length of 150 mm was bent in a U shape so as to have a bending radius of 10 mm, and both ends of the cable were fixed with tape or the like and held for 24 hours. Thereafter, the cable was released, the cable was suspended with one end fixed, and the displacement D (mm) after 24 hours was measured (see FIG. 2). The case where this transition amount D was 50 mm or less was regarded as passing the wire rod evaluation test.
  • Table 1 shows the results of the above wire rod evaluation test.
  • the inner coating layer and the outer coating layer made of non-crosslinked polyurethane are provided, the hardness of the inner coating layer is 90 degrees to 100 degrees, the hardness of the outer coating layer is 80 degrees to 90 degrees, In Examples where the hardness was 5 to 10 degrees smaller than the hardness of the inner coating layer, it was confirmed that a sufficient effect of reducing the wrinkle was obtained.
  • the number and arrangement of the insulated wires 11 in the cable 10 of the above embodiment are not limited to this embodiment. It is good also as a structure by which two or more pairs of insulated wires are contained in a cable.

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  • Insulated Conductors (AREA)
PCT/JP2014/073885 2013-09-10 2014-09-10 ケーブル WO2015037602A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MX2016001015A MX349094B (es) 2013-09-10 2014-09-10 Cable.
DE112014004143.2T DE112014004143T5 (de) 2013-09-10 2014-09-10 Kabel
CN201480041983.1A CN105637596B (zh) 2013-09-10 2014-09-10 电缆

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-187616 2013-09-10
JP2013187616A JP6179289B2 (ja) 2013-09-10 2013-09-10 ケーブル

Publications (1)

Publication Number Publication Date
WO2015037602A1 true WO2015037602A1 (ja) 2015-03-19

Family

ID=52665704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/073885 WO2015037602A1 (ja) 2013-09-10 2014-09-10 ケーブル

Country Status (5)

Country Link
JP (1) JP6179289B2 (zh)
CN (1) CN105637596B (zh)
DE (1) DE112014004143T5 (zh)
MX (1) MX349094B (zh)
WO (1) WO2015037602A1 (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075948A (ja) * 2008-09-25 2010-04-08 Daihen Corp コンジットケーブル
JP2012238438A (ja) * 2011-05-11 2012-12-06 Sumitomo Electric Ind Ltd ケーブル及びその製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515726C2 (sv) * 1999-05-05 2001-10-01 Borealis As Elektrisk kabel
DE19939112A1 (de) * 1999-08-18 2001-02-22 Basf Ag Thermoplastische Polyurethane
CN1754914B (zh) * 2004-09-28 2010-05-26 拜耳（中国）有限公司 聚氨酯复合材料、其制备方法和用途

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075948A (ja) * 2008-09-25 2010-04-08 Daihen Corp コンジットケーブル
JP2012238438A (ja) * 2011-05-11 2012-12-06 Sumitomo Electric Ind Ltd ケーブル及びその製造方法

Also Published As

Publication number Publication date
CN105637596B (zh) 2017-05-24
DE112014004143T5 (de) 2016-07-21
MX2016001015A (es) 2016-04-19
MX349094B (es) 2017-07-11
JP6179289B2 (ja) 2017-08-16
CN105637596A (zh) 2016-06-01
JP2015056236A (ja) 2015-03-23

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