JPH02103804A - Radiation resistant electric wire and cable - Google Patents
Radiation resistant electric wire and cableInfo
- Publication number
- JPH02103804A JPH02103804A JP25427588A JP25427588A JPH02103804A JP H02103804 A JPH02103804 A JP H02103804A JP 25427588 A JP25427588 A JP 25427588A JP 25427588 A JP25427588 A JP 25427588A JP H02103804 A JPH02103804 A JP H02103804A
- Authority
- JP
- Japan
- Prior art keywords
- insulating layer
- polyimide resin
- cable
- film
- electric wire
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 21
- 229920001721 polyimide Polymers 0.000 claims abstract description 27
- 239000009719 polyimide resin Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000012212 insulator Substances 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002966 varnish Substances 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 239000004642 Polyimide Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000750631 Takifugu chinensis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野］
本発明は、高放射線域での使用に適した面４放躬線性電
線・ケーブルに関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a plane 4 radioactive wire/cable suitable for use in high radiation areas.
［従来技術］
近年、原子力発電所、放射線照射施設、宇宙用途なとの
放射線環境で使用さ、れる電線・ケーブルへの要求は高
度化されてきており、１０〜］ ｏｏｒｖｔｃｙレヘル
にも及レベ線量の放射線に耐える電線・ケーブルか要求
されるようになってきた。[Prior art] In recent years, the requirements for electric wires and cables used in radiation environments such as nuclear power plants, radiation irradiation facilities, and space applications have become more sophisticated, and even the 10~] oorvtcy level has been increased. There is a growing demand for electric wires and cables that can withstand radiation.
このような環境で使用できるものとして、金属酸化物等
の無機飼料を絶縁体とした無機絶縁（Ｍｌ）ケーブルか
知られているが、可撓性を欠くため、用途か限定されて
いる。Inorganic insulated (Ml) cables using inorganic feed such as metal oxides as an insulator are known as cables that can be used in such environments, but their use is limited due to their lack of flexibility.
このため、可撓性を有する有機飼料を絶縁体として使用
することが提案されており、耐放射線性に優れたポリイ
ミド樹脂が広く使用されてきている。For this reason, it has been proposed to use flexible organic feed as an insulator, and polyimide resins with excellent radiation resistance have been widely used.
１発明か解決しようどする課題］
しかし、従来より使用されているポリイミド樹脂は、
で示される化学構造式であり、高速増殖炉のような数１
００ＭＧｙレベルの大量の放射線に曝される場合耐放射
線性が不十分であるという問題かある。1 Invention or problem to be solved] However, the polyimide resin that has been used conventionally has the chemical structural formula shown by
There is a problem that radiation resistance is insufficient when exposed to a large amount of radiation at the 00 MGy level.
本発明は上記に基いてなされたものであり、太線量の放
射線に耐える電線・ケーブルの提供を目的とするもので
ある。The present invention has been made based on the above, and aims to provide electric wires and cables that can withstand large doses of radiation.
［課題を解決するための手段］
本発明の耐放射線性電線・ケーブルは、導体上に直接あ
るいは他の絶縁物を介して、
（式中ｎは整数）
なる化学構造式で示されるポリイミド樹脂からなる絶縁
層を設けてなることを特徴とするものである。[Means for Solving the Problems] The radiation-resistant electric wire/cable of the present invention is made of a polyimide resin represented by the chemical structural formula (where n is an integer) directly on a conductor or via another insulator. It is characterized by being provided with an insulating layer.
上記化学構造式で示されるポリイミド樹脂は、分子構造
中に耐放射線性の弱点となるエーテル結合（−０−）を
有してないため優れた耐放射線性を示すものと推察され
る。このようなポリイミド樹脂の代表例としては、コー
ピレックスＳ（宇部興産（樽製品、商品名）及びそのワ
ニスがあげられる。It is presumed that the polyimide resin represented by the above chemical structural formula exhibits excellent radiation resistance because it does not have an ether bond (-0-) in its molecular structure, which is a weak point in radiation resistance. Typical examples of such polyimide resins include Kopilex S (Ube Industries (barrel product, trade name)) and its varnish.
本発明において、ポリイミド樹脂は、フィルム叉はワニ
スの形で絶縁層に供することができる。フィルムの場合
には、フィルムの両面又は片面に接イ“）剤をコートシ
、フィルム絶縁層を一体化することか好ましい。又、ポ
リイミド樹脂は、導体外周に直接設けて絶縁層としても
よく、他の絶縁物を介して設けて絶縁層としてもよい。In the present invention, the polyimide resin can be applied to the insulating layer in the form of a film or varnish. In the case of a film, it is preferable to coat both sides or one side of the film with an adhesive and integrate the film insulating layer.Also, polyimide resin may be applied directly to the outer periphery of the conductor as an insulating layer; It may be provided as an insulating layer with an insulator interposed therebetween.
この場合、シリコーン組成物やカラスクロス等を内部絶
縁物として設け、この外周にポリイミド樹脂を外部絶縁
層として設（プてもよい。更に、ポリイミドフィルムに
他の無機可撓性材料を貼り合せた複合テープの形で絶縁
層を形成してもよい。無機可撓性材料としては、マイカ
、カラスクロス及びシリカやアルミナ等の無機繊維を抄
紙したいわゆるセラミックペーパ等があ（ブられる。In this case, a silicone composition, crow cloth, etc. may be provided as an internal insulator, and a polyimide resin may be provided around this outer periphery as an external insulating layer.Furthermore, other inorganic flexible materials may be bonded to the polyimide film. The insulating layer may be formed in the form of a composite tape. Examples of the inorganic flexible material include mica, crow cloth, and so-called ceramic paper made from inorganic fibers such as silica and alumina.
［発明の実施例］
実施例１
片面にテトラフルオ口エチレン−ヘキザフルオロプロピ
レン共重合体を接着層（熱融着層）としてもつ化学構造
式、
（式中ｎは整１１ｉ、）
で示されるポリイミドフィルム（ポリイミドの厚さ０．
０２５ｍｍ、テトラフルオロエチレン−へギザフルオロ
プロピレン共重合体０．０］３ｍｍ）テープを２０ＡＷ
Ｇの導体上に絶縁厚０，１．２ｍｍとなるように巻き、
３５０℃の電気炉を通過させてポリイミド層を一体化し
た。この絶縁層の上に保護層として０゜２ ｍ ｍ厚さ
のカラス編組を施して絶縁電線を製造した。[Embodiments of the Invention] Example 1 A polyimide having the chemical structural formula (wherein n is 11i) having a tetrafluoroethylene-hexafluoropropylene copolymer as an adhesive layer (thermal adhesive layer) on one side. Film (polyimide thickness 0.
025mm, tetrafluoroethylene-hegizafluoropropylene copolymer 0.0]3mm) tape 20AW
Wrap it on the conductor G so that the insulation thickness is 0.1.2 mm,
The polyimide layer was integrated by passing through an electric furnace at 350°C. A 0.2 mm thick crow braid was applied as a protective layer on this insulating layer to produce an insulated wire.
実施例２
片面にテトラフルオロエチレン−ヘキザフルオ「１プロ
ピレン共重合体を接着層（熱融着層）としてもつ実施例
１と同様の化学構造式で示されるポリイミドフィルム（
ポリイミドの厚さ０．０５ｍｍ、テ・ラフルオロエチレ
ンーヘキザフルオロプロピレン共屯合体０．０１３ｍｍ
）テープを断面積５．５ｍｍ’のニッケルメッキ軟銅撚
線上に絶縁厚０．］３３ｍとなるように巻き、３５０°
Ｃの電気炉を通過させてポリイミド層を一体化した。こ
の絶縁層の−Ｌに０．１３ｍｍ厚さのマイツノカラステ
ープ（厚さ０．］ｍｍのマイカと厚さ＋１ 、０３Ｉｎ
ｍのカラスクロスとを貼り合せたもの）を厚さ０．９
ｍｍとなるように巻き、この」−に保１１μｍ１／ｉと
して＋１．２ｍｍ厚さのカラス編組を施して絶縁１貸星
を・シソ造 し７た。Example 2 A polyimide film having the same chemical structural formula as Example 1 and having a tetrafluoroethylene-hexafluoropropylene copolymer as an adhesive layer (thermal adhesive layer) on one side (
Thickness of polyimide: 0.05 mm, Te-rafluoroethylene-hexafluoropropylene conjugate: 0.013 mm
) The tape was placed on a nickel-plated annealed copper stranded wire with a cross-sectional area of 5.5 mm' and an insulation thickness of 0. ] Wrap to 33m, 350°
The polyimide layer was integrated by passing it through an electric furnace of C. On -L of this insulating layer, 0.13 mm thick Maitu no Karasu tape (0.] mm thick mica and +1 thickness, 03 In
crow cloth of m) with a thickness of 0.9
The wire was wound to a thickness of 1.0 mm, and a 1.2 mm thick crow braid was applied to this 11 μm 1/i to create an insulating star.
比較例１
化学構造式、
（式中ｎは整数）
て示されるポリイミドフィルムを使用した以外は実施例
１と同様にして絶縁電線を製造した。Comparative Example 1 An insulated wire was produced in the same manner as in Example 1, except that a polyimide film having the chemical structural formula (where n is an integer) was used.
比較例２
比較例１と同様の化学構造式のポリイミドフィルムを使
用して実施例２と同様にして絶縁電線を製造した。Comparative Example 2 An insulated wire was produced in the same manner as in Example 2 using a polyimide film having the same chemical structure as in Comparative Example 1.
実施例及び比較例で製造した絶縁電線についての評価結
果を第１表に示す。なお、評価は次に基ついて行なった
。Table 1 shows the evaluation results for the insulated wires manufactured in Examples and Comparative Examples. The evaluation was based on the following.
絶縁電線に、ＣＯを線源とするγ線を常温、空気中で５
０ＭＧｙ、１５０Ｍ（、ｙ、２５０ＭＧｙのそれぞれを
照射し、照射後の絶縁抵抗を測定し、未照射のものと比
較した。又、絶縁電線を解体して絶縁層の健全性を調べ
た。なお、γ線の照射線量率は、１８ｋＧｙ／１〕であ
る。Insulated wires are exposed to γ-rays from CO as a radiation source in air at room temperature.
0MGy, 150M(,y, 250MGy) were irradiated, and the insulation resistance after irradiation was measured and compared with that without irradiation.In addition, the insulated wire was disassembled and the soundness of the insulation layer was examined. The γ-ray irradiation dose rate was 18 kGy/1.
第
表
本発明で規定したポリイミドを使用した実施例及び２て
は、大量のγ線に曝露されてもポリイミドは健全てあり
、電線は十分な絶縁抵抗を保持している。従来のポリイ
ミドを使用した比較例１及び２ては、γ線照射により絶
縁抵抗の低下が大きく、しかもポリイミドは完全に脆仕
している。In Examples and 2 using the polyimide specified in the present invention in Table 1, the polyimide remains sound even when exposed to a large amount of γ rays, and the electric wire maintains sufficient insulation resistance. In Comparative Examples 1 and 2 using conventional polyimide, the insulation resistance decreased significantly due to γ-ray irradiation, and the polyimide was completely brittle.
［発明の効果］
以」二の説明から明らかな通り、本発明は特定のポリイ
ミドを絶縁層として使用するものであり、］ＯＯＭＧｙ
を越えるような大量の放射線にも耐えるという極めて優
れた耐放射線性を有する電線・ケーブルを実現できるよ
うになる。[Effects of the Invention] As is clear from the following explanation, the present invention uses a specific polyimide as an insulating layer.
It will be possible to realize electric wires and cables with extremely high radiation resistance that can withstand large amounts of radiation exceeding .
Claims (1)
式、化学式、表等があります▼ （式中ｎは整数） なる化学構造式で示されるポリイミド樹脂からなる絶縁
層を設けてなることを特徴とする耐放射線性電線・ケー
ブル。(1) An insulating layer made of polyimide resin represented by the chemical structural formula ▲mathematical formula, chemical formula, table, etc.▼ (where n is an integer) is provided directly on the conductor or through another insulator. Radiation-resistant electric wires and cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25427588A JPH02103804A (en) | 1988-10-08 | 1988-10-08 | Radiation resistant electric wire and cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25427588A JPH02103804A (en) | 1988-10-08 | 1988-10-08 | Radiation resistant electric wire and cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02103804A true JPH02103804A (en) | 1990-04-16 |
Family
ID=17262707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25427588A Pending JPH02103804A (en) | 1988-10-08 | 1988-10-08 | Radiation resistant electric wire and cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02103804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160014651A (en) * | 2013-05-31 | 2016-02-11 | 가부시키가이샤 가네카 | Insulated coating material and use of same |
| US10665362B2 (en) | 2014-11-27 | 2020-05-26 | Kaneka Corporation | Insulating coating material having excellent wear resistance |
| US10703860B2 (en) | 2014-11-27 | 2020-07-07 | Kaneka Corporation | Insulating coating material having excellent wear resistance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56151757A (en) * | 1980-04-28 | 1981-11-24 | Nippon Carbide Ind Co Ltd | Polyimide resin molded article |
| JPS6032827A (en) * | 1983-08-01 | 1985-02-20 | Hitachi Ltd | Resin composition having low thermal expansion coefficient |
-
1988
- 1988-10-08 JP JP25427588A patent/JPH02103804A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56151757A (en) * | 1980-04-28 | 1981-11-24 | Nippon Carbide Ind Co Ltd | Polyimide resin molded article |
| JPS6032827A (en) * | 1983-08-01 | 1985-02-20 | Hitachi Ltd | Resin composition having low thermal expansion coefficient |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160014651A (en) * | 2013-05-31 | 2016-02-11 | 가부시키가이샤 가네카 | Insulated coating material and use of same |
| US20160075916A1 (en) * | 2013-05-31 | 2016-03-17 | Kaneka Corporation | Insulating coating material and use of same |
| JPWO2014192733A1 (en) * | 2013-05-31 | 2017-02-23 | 株式会社カネカ | Insulation coating material and use thereof |
| CN108047978A (en) * | 2013-05-31 | 2018-05-18 | 株式会社钟化 | Insulating coating material and its manufacturing method, dielectric cable and its manufacturing method |
| US10487239B2 (en) * | 2013-05-31 | 2019-11-26 | Kaneka Corporation | Insulating coating material and use of same |
| US10665362B2 (en) | 2014-11-27 | 2020-05-26 | Kaneka Corporation | Insulating coating material having excellent wear resistance |
| US10703860B2 (en) | 2014-11-27 | 2020-07-07 | Kaneka Corporation | Insulating coating material having excellent wear resistance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9208925B2 (en) | High performance, high temperature wire or cable | |
| JPH0337907A (en) | Composite mica insulating thin-film | |
| JPH02103804A (en) | Radiation resistant electric wire and cable | |
| JPS6040642B2 (en) | radiation resistant cable | |
| JPS5848305A (en) | Explosion preventive refractory cable | |
| CN213752087U (en) | High temperature resistant fire-retardant type enameled copper line | |
| JPH0419644B2 (en) | ||
| JP2530667B2 (en) | Heat resistant wire, cable | |
| JPH0294327A (en) | Radiation-resistant electric wire and cable | |
| JPS63304516A (en) | Insulated electric wire | |
| JP2689527B2 (en) | Radiation resistant wire / cable | |
| JPH0294328A (en) | Radiation-resistant electric wire and cable | |
| JP2689526B2 (en) | Radiation resistant wire / cable | |
| JPS63304515A (en) | Insulated electric wire | |
| CN205984398U (en) | Cable | |
| JPS6140022Y2 (en) | ||
| JPH0197305A (en) | Insulated electric wire with radiation resistance | |
| JPH0715055Y2 (en) | Radiation resistant wire / cable | |
| CN206148167U (en) | Medical equipment high tension cable | |
| JPH06203648A (en) | Fire-resistant electric cable and mica tape | |
| JP2689525B2 (en) | Radiation resistant wire / cable | |
| JP3152670B2 (en) | Heat and radiation resistant cable | |
| JPH07296648A (en) | High heat resistant insulated wire | |
| JPH01124904A (en) | Heat-resistant wire and cable | |
| JP2751189B2 (en) | Heat and radiation resistant insulated wire manufacturing method |