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JP2884527B2 - Insulated wire - Google Patents
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JP2884527B2 - Insulated wire - Google Patents

Insulated wire

Info

Publication number
JP2884527B2
JP2884527B2 JP17987289A JP17987289A JP2884527B2 JP 2884527 B2 JP2884527 B2 JP 2884527B2 JP 17987289 A JP17987289 A JP 17987289A JP 17987289 A JP17987289 A JP 17987289A JP 2884527 B2 JP2884527 B2 JP 2884527B2
Authority
JP
Japan
Prior art keywords
insulating layer
layer
insulated wire
insulating
layers
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.)
Expired - Lifetime
Application number
JP17987289A
Other languages
Japanese (ja)
Other versions
JPH0343912A (en
Inventor
泉 石川
英夫 砂塚
正毅 長谷川
高橋  功
明 吉野
節雄 杉山
元久 村山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Original Assignee
Fujikura 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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP17987289A priority Critical patent/JP2884527B2/en
Publication of JPH0343912A publication Critical patent/JPH0343912A/en
Application granted granted Critical
Publication of JP2884527B2 publication Critical patent/JP2884527B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Insulated Conductors (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、導体上に直接若しくは他の絶縁物を介し
てポリオレフィンを主成分とする絶縁層(2),プラス
チックからなる中間層(4),芳香族ポリマーを主成分
とする絶縁層(3)を順次施した絶縁電線に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an insulating layer (2) containing polyolefin as a main component directly on a conductor or via another insulating material, and an intermediate layer (4) made of plastic. The present invention relates to an insulated wire in which an insulating layer (3) containing an aromatic polymer as a main component is sequentially applied.

〔従来の技術〕[Conventional technology]

従来のこの種絶縁電線としては、耐外傷性及び耐カッ
トスルー性等を向上する目的でポリオレフィンのような
軟らかい絶縁層(内層)の外周にこの絶縁層(内層)よ
りも曲げ弾性率の大きなナイロン、フッ素系ポリマー、
芳香族ポリマー等を押出被覆して絶縁層(外層)を施し
たものが知られている。
As a conventional insulated wire of this type, a nylon having a larger flexural modulus than this insulating layer (inner layer) is provided around a soft insulating layer (inner layer) such as polyolefin for the purpose of improving trauma resistance and cut-through resistance. , Fluoropolymer,
It is known that an insulating layer (outer layer) is formed by extrusion-coating an aromatic polymer or the like.

〔解決しようとする課題〕[Problem to be solved]

しかしながらこのような絶縁電線においては、内層の
硬度や曲げ弾性率が外層よりも著しく小さい場合、電線
を曲げたときに絶縁層にしわの発生が生ずるという問題
があった。曲げ弾性率の差が15,000kg/cm2以上異なる場
合には、曲げ時のしわの発生が著しく、この差の大きい
ものほどしわの発生が著しいことが判明した。
However, in such an insulated wire, when the hardness and flexural modulus of the inner layer are significantly smaller than those of the outer layer, there is a problem that the insulating layer is wrinkled when the wire is bent. When the difference in flexural modulus differs by 15,000 kg / cm 2 or more, it was found that wrinkling during bending was remarkable, and that the larger the difference, the more remarkable wrinkling was.

そこで、この発明は、内外層の曲げ弾性率の差が著し
い場合でも、しわの発生を防止することのできる絶縁電
線を提供することを目的とするものである。
Accordingly, an object of the present invention is to provide an insulated wire that can prevent wrinkles from occurring even when the difference in bending elastic modulus between the inner and outer layers is significant.

〔課題を解決するための手段〕[Means for solving the problem]

上述の目的を達成するため、この発明は、導体上に直
接若しくは他の絶縁物を介してポリオレフィンを主成分
とする絶縁層を施し、この外周に芳香族ポリマーを主成
分とする絶縁層を施した絶縁電線において、両絶縁層の
層間に中間層を形成し、3つの層の曲げ弾性率が絶縁層
(内層)<中間層<絶縁層(外層)であるように構成し
た。
In order to achieve the above-mentioned object, the present invention provides an insulating layer mainly composed of polyolefin on a conductor directly or via another insulating material, and an insulating layer mainly composed of an aromatic polymer on the outer periphery thereof. In the insulated wire, an intermediate layer was formed between the two insulating layers, and the three layers were configured such that the flexural modulus of the three layers was as follows: insulating layer (inner layer) <intermediate layer <insulating layer (outer layer).

〔作用〕[Action]

この発明においては、中間層が介在することにより、
曲げ時のしわの発生が見られなかった。
In the present invention, the intermediate layer intervenes,
No wrinkles occurred during bending.

〔実施例〕〔Example〕

図示する実施例は、絶縁電線の断面図であり、導体1
の上にポリオレフィンを主成分とする絶縁層(内層)2
を施し、この外周に芳香族ポリマーを主成分とする絶縁
層(外層)3を施し、両層2,3の間に中間層4を形成し
てある。
The embodiment shown is a cross-sectional view of an insulated wire, and the conductor 1
Polyolefin-based insulating layer (inner layer) 2
And an insulating layer (outer layer) 3 containing an aromatic polymer as a main component is provided on the outer periphery thereof, and an intermediate layer 4 is formed between the two layers 2 and 3.

これら3層は、架橋物であっても非架橋物であっても
良い。中間層4は、溶融押出、塗布焼付等の手段により
絶縁層(内層)2の外周に施される。絶縁層(外層)3
は中間層4の外周に押出被覆する。
These three layers may be crosslinked or non-crosslinked. The intermediate layer 4 is applied to the outer periphery of the insulating layer (inner layer) 2 by means such as melt extrusion, coating and baking. Insulating layer (outer layer) 3
Is extrusion-coated on the outer periphery of the intermediate layer 4.

曲げ弾性率(ASTM D790に基づく測定)が、 絶縁層(内層)2… 2,000kg/cm2 絶縁層(外層)3…30,000kg/cm2 であり、中間層4を介在させない場合には、曲げ時にし
わが発生するが、このとき曲げ弾性率15,000kg/cm2の中
間層4を2つの層2,3の間に形成すると、しわの発生が
生じなかった。
The flexural modulus (measured based on ASTM D790) is: insulating layer (inner layer) 2 ... 2,000 kg / cm 2 insulating layer (outer layer) 3 ... 30,000 kg / cm 2. Occasionally wrinkles were formed, but when the intermediate layer 4 having a flexural modulus of elasticity of 15,000 kg / cm 2 was formed between the two layers 2 and 3, no wrinkles were generated.

そして中間層4としては、用いた内・外絶縁層の弾性
率を考慮して種々のプラスチック材料から選択される
が、ポリアミド,ポリウレタンやオレフィンポリマーを
主成分とするものの使用が好適であり、ここで、「オレ
フィンポリマー」という語は、1種またはそれ以上の非
置換および/または置換オレフィンのポリマーとして定
義される。ポリマーがモノマーまたはコモノマーとして
置換オレフィンを含むとき、オレフィンは、好ましくは
極性モノマーであり、カルボン酸エステル、特にアルキ
ルアクリレート(例えばメチルまたはエチルアクリレー
ト)または、ビニルエステル(例えば酢酸ビニル)であ
る。
The intermediate layer 4 is selected from various plastic materials in consideration of the elastic modulus of the inner / outer insulating layer used. It is preferable to use a material mainly composed of polyamide, polyurethane or olefin polymer. Wherein the term "olefin polymer" is defined as a polymer of one or more unsubstituted and / or substituted olefins. When the polymer comprises a substituted olefin as a monomer or comonomer, the olefin is preferably a polar monomer and is a carboxylic ester, especially an alkyl acrylate (eg, methyl or ethyl acrylate) or a vinyl ester (eg, vinyl acetate).

なお、導体1に他の絶縁物を施し、この外周に絶縁層
(内層)2を施しても良い。
Note that another insulator may be applied to the conductor 1, and an insulating layer (inner layer) 2 may be applied to the outer periphery.

次表は、この発明の製造例1〜8と比較例1〜3との
特性を比較したものである。
The following table compares the properties of Production Examples 1 to 8 of the present invention and Comparative Examples 1 to 3.

表中○はしわ発生なし、×はしわ発生を示す。また、
使用材料の曲げ弾性率は以下の通りである。ポリウレタ
ン(21,000kg/cm2)、EVA(エチレン−酢酸ビニルコポ
リマー、1,300kg/cm2)、LDPE(低密度ポリエチレン、
1,500kg/cm2)、HDPE(高密度ポリエチレン、11,000kg/
cm2)、12ナイロン(13,000kg/cm2)、TPX(ポリメチル
ペンテン、13,000kg/cm2)、PEI(ポリエーテルイミ
ド、33,700kg/cm2)、PC(ポリカーボネート、23,000kg
/cm2)、PES(ポリエーテルサルホン、26,000kg/c
m2)、PEEK(ポリエーテルエーテルケトン、39,800kg/c
m2) 〔効果〕 以上説明したように、この発明によれば、曲げ弾性率
が高いポリマーが最外層であるので耐外傷性、耐カット
スルー特性に優れる。また、曲げてもしわが発生しない
とともに、可撓性を低下させない。さらに、導体の外周
が少なくとも三層となるのでピンホール等の不良確率が
低減する。
In the table, ○ indicates no wrinkling, and X indicates wrinkling. Also,
The flexural modulus of the material used is as follows. Polyurethane (21,000 kg / cm 2 ), EVA (ethylene-vinyl acetate copolymer, 1,300 kg / cm 2 ), LDPE (low density polyethylene,
1,500kg / cm 2 ), HDPE (high density polyethylene, 11,000kg /
cm 2), 12 nylon (13,000kg / cm 2), TPX ( polymethylpentene, 13,000kg / cm 2), PEI ( polyetherimide, 33,700kg / cm 2), PC ( polycarbonate, 23,000Kg
/ cm 2 ), PES (polyethersulfone, 26,000kg / c
m 2 ), PEEK (polyetheretherketone, 39,800kg / c
m 2 ) [Effects] As described above, according to the present invention, a polymer having a high flexural modulus is the outermost layer, so that the polymer is excellent in damage resistance and cut-through resistance. Moreover, wrinkles do not occur even when bent, and flexibility is not reduced. Further, since the outer periphery of the conductor has at least three layers, the probability of defects such as pinholes is reduced.

【図面の簡単な説明】[Brief description of the drawings]

図面はこの発明の好適な実施例を示す断面図である。 1……導体、 2……絶縁層(内層)、 3……絶縁層(外層)、 4……中間層。 FIG. 1 is a sectional view showing a preferred embodiment of the present invention. 1 ... conductor, 2 ... insulating layer (inner layer), 3 ... insulating layer (outer layer), 4 ... intermediate layer.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 功 東京都江東区木場1丁目5番1号 藤倉 電線株式会社内 (72)発明者 吉野 明 静岡県沼津市双葉町1―9 藤倉電線株 式会社沼津工場内 (72)発明者 杉山 節雄 静岡県沼津市双葉町1―9 藤倉電線株 式会社沼津工場内 (72)発明者 村山 元久 東京都江東区木場1丁目5番1号 藤倉 電線株式会社内 (56)参考文献 特開 昭62−93806(JP,A) 特開 昭62−177808(JP,A) 特開 平3−55713(JP,A) 特開 昭59−73807(JP,A) 特開 昭63−58709(JP,A) 実開 昭62−195916(JP,U) 実開 平1−89413(JP,U) (58)調査した分野(Int.Cl.6,DB名) H01B 7/00,7/02,7/04,7/18 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Isao Takahashi 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Inventor Akira Yoshino 1-9 Futabacho, Numazu-shi, Shizuoka Fujikura Electric Wire & Cable Company (72) Inventor Setsuo Sugiyama 1-9 Futaba-cho, Numazu City, Shizuoka Prefecture Fujikura Electric Wire Co., Ltd. Numazu Plant (72) Inventor Motohisa Murayama 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (56) References JP-A-62-93806 (JP, A) JP-A-62-177808 (JP, A) JP-A-3-55713 (JP, A) JP-A-59-73807 (JP, A) JP-A 63-58709 (JP, A) JP-A 62-195916 (JP, U) JP-A 1-89413 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01B 7 / 00,7 / 02,7 / 04,7 / 18

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】導体(1)上に直接若しくは他の絶縁物を
介してポリオレフィンを主成分とする絶縁層(2)を施
し、 この外周に芳香族ポリマーを主成分とする絶縁層(3)
を施した絶縁電線において、 両絶縁層(2,3)の層間に中間層(4)を形成し、 3つの層の曲げ弾性率が絶縁層(2)<中間層(4)<
絶縁層(3)であることを特徴とする絶縁電線。
An insulating layer mainly composed of polyolefin is provided on a conductor directly or via another insulating material, and an insulating layer mainly composed of an aromatic polymer is provided on the outer periphery of the insulating layer.
In the insulated wire, the intermediate layer (4) is formed between the two insulating layers (2, 3), and the flexural modulus of the three layers is the insulating layer (2) <the intermediate layer (4) <
An insulated wire characterized by being an insulating layer (3).
JP17987289A 1989-07-12 1989-07-12 Insulated wire Expired - Lifetime JP2884527B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17987289A JP2884527B2 (en) 1989-07-12 1989-07-12 Insulated wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17987289A JP2884527B2 (en) 1989-07-12 1989-07-12 Insulated wire

Publications (2)

Publication Number Publication Date
JPH0343912A JPH0343912A (en) 1991-02-25
JP2884527B2 true JP2884527B2 (en) 1999-04-19

Family

ID=16073382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17987289A Expired - Lifetime JP2884527B2 (en) 1989-07-12 1989-07-12 Insulated wire

Country Status (1)

Country Link
JP (1) JP2884527B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3073545B2 (en) * 1990-05-23 2000-08-07 株式会社フジクラ Insulated wire and cable using this
JP2842456B2 (en) * 1991-05-16 1999-01-06 株式会社フジクラ Insulated wire
US8324505B2 (en) 2010-05-17 2012-12-04 Raytheon Company Temperature tolerant cover layer construction

Also Published As

Publication number Publication date
JPH0343912A (en) 1991-02-25

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