JPH03159008A - Insulated electric cable - Google Patents
Insulated electric cableInfo
- Publication number
- JPH03159008A JPH03159008A JP29871589A JP29871589A JPH03159008A JP H03159008 A JPH03159008 A JP H03159008A JP 29871589 A JP29871589 A JP 29871589A JP 29871589 A JP29871589 A JP 29871589A JP H03159008 A JPH03159008 A JP H03159008A
- Authority
- JP
- Japan
- Prior art keywords
- insulating layer
- layer
- conductor
- polyolefin
- liquid insulator
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000012212 insulator Substances 0.000 claims abstract description 14
- 229920000098 polyolefin Polymers 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 229920006380 polyphenylene oxide Polymers 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- 229920001643 poly(ether ketone) Polymers 0.000 claims abstract description 4
- -1 polybutylene terephthalate Polymers 0.000 claims description 16
- 229920002545 silicone oil Polymers 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 229920002492 poly(sulfone) Polymers 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 239000004811 fluoropolymer Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920001230 polyarylate Polymers 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920002530 polyetherether ketone Polymers 0.000 claims description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 claims 2
- 239000004697 Polyetherimide Substances 0.000 claims 1
- 229920001601 polyetherimide Polymers 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 60
- 239000004698 Polyethylene Substances 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 208000014674 injury Diseases 0.000 description 4
- 230000008733 trauma Effects 0.000 description 4
- 239000010702 perfluoropolyether Substances 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 2
- 229920001112 grafted polyolefin Polymers 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、電気的特性に優れ、耐外傷性、可能性に富
む絶縁電線に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an insulated wire that has excellent electrical properties, is resistant to external damage, and is rich in possibilities.
従来の絶縁電線の１つに、導体上にポリエチレンからな
る絶縁層を押出被覆して形成したポリエチレン絶縁電線
がある。One of the conventional insulated wires is a polyethylene insulated wire formed by extruding and covering a conductor with an insulating layer made of polyethylene.
このポリエチレン絶縁電線は、ポリエチレンが持つ優秀
な電気絶縁性、高周波特性から電カケープルや通信ケー
ブル等に広く用いられてふり、またポリエチレン自体が
可撓性に富むことから絶縁電線の可撓性も良好である。This polyethylene insulated wire is widely used in power cables, communication cables, etc. due to the excellent electrical insulation and high frequency properties of polyethylene, and since polyethylene itself is highly flexible, the insulated wire has good flexibility. It is.
しかしながら、このポリエチレン絶縁電線にあっては、
その絶縁層の厚さが薄い場合には、ポリエチレンが比較
的軟質で機械的強度が低いため、耐外傷性に劣る欠点が
あった。However, with this polyethylene insulated wire,
When the thickness of the insulating layer is thin, polyethylene is relatively soft and has low mechanical strength, resulting in poor trauma resistance.
このため、機械的強度が高く、剛直なポリフェニレンオ
キサイド（ＰＰＯ）、ポリエーテルエーチルケトン（Ｐ
ＥＥＫ）、ポリカーボネイト （ＰＣ）、ポリスルホン
などのいわゆるエンジニアリングプラスチックを絶縁層
とする絶縁電線が考えられるが、これらは耐外傷性は良
好であるが、電線としたときの可撓性が乏しく、曲げ加
工性に劣る欠点がある。また、エンジニアリングプラス
チックはその分子内に極性基が存在するため、比較的吸
水性があり、長期間浸水条件で使用したりすると耐電圧
特性が低下する欠点もある。For this reason, polyphenylene oxide (PPO), polyether ethyl ketone (PPO), which has high mechanical strength and rigidity,
Insulated wires with insulation layers made of so-called engineering plastics such as EEK), polycarbonate (PC), and polysulfone are considered, but these have good trauma resistance, but have poor flexibility when made into wires, and are difficult to bend. There are disadvantages that are inferior to gender. Furthermore, since engineering plastics have polar groups in their molecules, they are relatively water-absorbing, and they also have the disadvantage that their voltage resistance characteristics decrease when used under water immersion conditions for a long period of time.
そこで、この発明は、耐外傷性に優れ、可撓性に富み、
電気的特性にも優れた絶縁電線を提供することを目的と
する。Therefore, this invention has excellent trauma resistance, high flexibility,
The purpose is to provide an insulated wire with excellent electrical properties.
上述の目的を達成するため、この発明は、導体に架橋ポ
リオレフィンから成る第１絶縁層を設け、この第１絶縁
層に液状絶縁体から成る中間層を介してポリフェニレン
オキサイド、ポリエーテルケトン、ポリニーデル℃−チ
ルケトン、ポリカーボネー ト、ポリブチレンテレフタ
レート、ポリエチレンテレツクレート、ポリニーデルイ
ミド、ポリアリレート、ポリ４−メチル−１−ペンテン
、ポリサルホン、ポリエーテルサルホン、フッ素系ポリ
マーおよびポリアミドから成る群から選ばれた１種以上
のポリマーからなる第２絶縁層を設けたものである。To achieve the above object, the present invention provides a conductor with a first insulating layer made of cross-linked polyolefin, and this first insulating layer is injected with polyphenylene oxide, polyetherketone, polyneedle C through an intermediate layer made of a liquid insulator. - selected from the group consisting of tylketone, polycarbonate, polybutylene terephthalate, polyethylene tereclate, polyneedlelimide, polyarylate, poly4-methyl-1-pentene, polysulfone, polyethersulfone, fluoropolymers and polyamides. A second insulating layer made of one or more kinds of polymers is provided.
この発明では、第２絶縁層を施す前の工程において第１
絶縁層に液状絶縁体を施すため、第１絶縁層の外傷防止
が図られ、第２絶縁層が施された後には中間層が潤滑保
護層として機能し、耐外傷性、電気的特性に優れ、可撓
性に富んだものとなる。In this invention, the first insulating layer is
Since a liquid insulator is applied to the insulating layer, the first insulating layer is protected from damage, and after the second insulating layer is applied, the intermediate layer functions as a lubricating protective layer, providing excellent resistance to external damage and electrical properties. , it becomes highly flexible.
以下にこの発明の好適な実施例を図面を参照にして説明
する。Preferred embodiments of the present invention will be described below with reference to the drawings.
図において、導体１に架橋ポリオレフィンから成る第１
＠縁層２を設け、この第１絶縁層２に液状絶縁体を塗布
し、さらにこの外周にポリフェニレンツキサイド、ポリ
エーテルケトン等を施して第２絶縁層４を施した。その
結果、第１絶縁層２と第２絶縁層４との間には中間層３
が存在することとなる。これにより、電気特性の良いポ
リオレフィン（第１絶縁層２）を薄くすることができ、
耐外傷性のよいポリフェニレンオキサイド等が最外層（
第２絶縁層４）に位置することになり可撓性、電気特性
、耐外傷性をあわせもつ絶縁電線が得られる。In the figure, conductor 1 has a first conductor made of cross-linked polyolefin.
An edge layer 2 was provided, a liquid insulator was applied to the first insulating layer 2, and a second insulating layer 4 was formed by applying polyphenylene oxide, polyether ketone, etc. to the outer periphery. As a result, there is an intermediate layer 3 between the first insulating layer 2 and the second insulating layer 4.
exists. This allows the polyolefin (first insulating layer 2) with good electrical properties to be made thinner,
The outermost layer is made of polyphenylene oxide with good trauma resistance (
Since it is located in the second insulating layer 4), an insulated wire having flexibility, electrical properties, and resistance to external damage can be obtained.
しかしながら、最外層（第２絶縁層４）が耐熱性の高い
ポリマーであるために、溶融押出温度が高くなるため冷
却時の熱収縮が太き（、このため内層（第１絶縁層２）
の架橋ポリオレフィンに残留ひずみを与える結果となり
、長期課電試験に劣る結果となることが判明した。これ
を防止するためには、内層（第１絶縁層２）の架橋ポリ
オレフィンと最外層（第２絶縁層４）の耐熱性の高いポ
リマーとの層間がお互いに接着しないことが重要であり
、このため電気特性の優れた離型層としての液状絶縁体
による中間層３が重要である。However, since the outermost layer (second insulating layer 4) is made of a highly heat-resistant polymer, the melt extrusion temperature is high, resulting in thick thermal contraction during cooling (for this reason, the inner layer (first insulating layer 2)
It was found that this resulted in residual strain being imparted to the crosslinked polyolefin, resulting in inferior results to long-term electrification tests. In order to prevent this, it is important that the crosslinked polyolefin of the inner layer (first insulating layer 2) and the highly heat-resistant polymer of the outermost layer (second insulating layer 4) do not adhere to each other. Therefore, the intermediate layer 3 made of a liquid insulator as a release layer with excellent electrical properties is important.
この液状絶縁体としては最外層（第２絶縁層４）に押出
温度の高い耐熱性ポリマー施す際に熱分解や揮散しない
ものが好ましくこの点からシリコーンオイル、フッ素オ
イル等が好適である。またこの液状絶縁体は均一に塗布
されることが好ましく、このため変性基を導入して層間
のぬれ性を改善したものも使用できる。The liquid insulator is preferably one that does not thermally decompose or volatilize when a heat-resistant polymer at a high extrusion temperature is applied to the outermost layer (second insulating layer 4), and from this point of view, silicone oil, fluorine oil, etc. are preferable. Further, it is preferable that this liquid insulator is applied uniformly, and for this reason, it is also possible to use a liquid insulator that has modified groups introduced therein to improve interlayer wettability.
液状絶縁体の例としては
（１） シリコーンオイル
（２） 変性シリコーンオイル（末端反応性）（３）
フッ素オイル
が用いられる。Examples of liquid insulators are (1) Silicone oil (2) Modified silicone oil (terminally reactive) (3)
Fluorine oil is used.
本発明において使用される末端反応性シリコーンオイル
は、
一般式（１，）
（ただし、Ｍｅはメチル基を示し、Ｘは、（ＣＨ２）ｍ
ＯＨ，（ＣＨ２）ｍ ＮＨ２、−Ｈ。The terminal-reactive silicone oil used in the present invention has the general formula (1,) (where Me represents a methyl group and X represents (CH2)m
OH, (CH2)m NH2, -H.
−ＣＨ＝ＣＨ，、−Ｃ，Ｈ６０Ｃ２Ｈ，ＯＨ。-CH=CH,, -C,H60C2H,OH.
等の反応性の基を示し、ｍ、ｎは１以上の整数である。etc., where m and n are integers of 1 or more.
）で表される、両端末に反応性の基を有する化合物、も
しくは
一般式（Ｉｔ）
で表される（ただし、Ｍｅ、 Ｘ、 ｍ、ｎは（１）式
と同様である。）、片末端に反応性の基を有する化合物
である。), or a compound having a reactive group at both terminals, or a compound represented by the general formula (It) (where Me, X, m, and n are the same as in formula (1)), It is a compound that has a reactive group at the end.
またこの末端反応性シリコーンオイルの代表的な具体例
を示すと、両末端に反応性の基を有するものでは、チッ
ソ株式会社製サイコプレーンＦＭ１１１１、同１１２１
．同１１２５、同２２３！、同２２４１．同２２４２、
同３’３１１、同３３２１、同３３２５、同４４１１、
同４４２１、同４４２５、同５５１１、同５５２１、同
５５２５、信越科学工業株式会社製シリコーンオイルＸ
−２２−１６０ＡＳ、同Ｘ−２２−１６０Ａ、同Ｘ−２
２−１６０Ｂ、 同Ｘ−２２−１６０Ｃ，同Ｘ−２２−
１６１ＡＳ、同Ｘ−２２−１６１Ａ、同Ｘ−２２−１６
１Ｂ、同Ｘ−２２−１６１Ｃなどであり、片末端に反応
製の基を有するものでは、チッソ株式会社製サイラブレ
ーンＦＭＯ４１１，同０４２１、同０５１１．同０５２
１、同０５２５、同０７１１．同０７２１、同０７２５
等であり、これらを１種または２種以上組み合せて用い
られる。Typical specific examples of this terminal-reactive silicone oil include those having reactive groups at both ends: Cycoprene FM1111 and Chisso FM1121 manufactured by Chisso Corporation.
．． Same 1125, same 223! , 2241. 2242,
3'311, 3321, 3325, 4411,
4421, 4425, 5511, 5521, 5525, Silicone Oil X manufactured by Shin-Etsu Scientific Co., Ltd.
-22-160AS, X-22-160A, X-2
2-160B, X-22-160C, X-22-
161AS, X-22-161A, X-22-16
1B, and X-22-161C, etc., and those having a reactive group at one end are Silabrene FMO411, 0421, and 0511, manufactured by Chisso Corporation. Same 052
1, 0525, 0711. 0721, 0725
etc., and these may be used alone or in combination of two or more.
この発明で用いられるフッ素系オイルとは、分子内にフ
ッ素原子を含み、室温で液体であるオイルを言い、例え
ばポリテトラフルオロエチレンの低分子量物、テトラフ
ルオロエチレン−パーフルオロアルキルビニルエーテル
共重合体の低分子量物、テトラフルオロエチレン−ヘキ
サフルオロエチレン共パｎ合体の低分子量物、テトラフ
ルオロエチレン−エチレン共重合体の低分子量物、ポリ
ビニリデンフロライドの低分子量物、ポリクロロトリフ
ルオロエチレンの低分子量物などが用いられるが、これ
らの他にＰＥＥＫとの相溶性を高めるためにこれら化合
物の末端に各種の変性基を導入したものを用いることも
好ましい。この変性基としては、メチルスチレン、オレ
フィン、ポリエーテル、アルコール、アミノ基、メルカ
プト基、エポキシ基、カルボキシル基、アミド基などが
ある。The fluorinated oil used in this invention refers to an oil that contains fluorine atoms in its molecules and is liquid at room temperature, such as low molecular weight polytetrafluoroethylene and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer. Low molecular weight products, low molecular weight products of tetrafluoroethylene-hexafluoroethylene copolymer, low molecular weight products of tetrafluoroethylene-ethylene copolymer, low molecular weight products of polyvinylidene fluoride, low molecular weight products of polychlorotrifluoroethylene In addition to these compounds, it is also preferable to use compounds in which various modified groups have been introduced at the terminals of these compounds in order to improve compatibility with PEEK. Examples of the modifying group include methylstyrene, olefin, polyether, alcohol, amino group, mercapto group, epoxy group, carboxyl group, and amide group.
また、このフッ素系オイルとして最も好適なものとして
、パーフルオロポリエーテルがある。パーフルオロポリ
エーテルは、下記のような構造式を有し、極めて耐熱性
が高い特徴がある。Also, perfluoropolyether is the most suitable fluorine-based oil. Perfluoropolyether has the following structural formula and is characterized by extremely high heat resistance.
このパーフルオロポリエーテルは、長期にわたっては３
７０℃以上で徐々に分解するものの短時間であれば４５
０℃においてもほとんど分解しない性質を有する。This perfluoropolyether has a long-term
Although it gradually decomposes at temperatures above 70℃, it is 45 if it is for a short period of time.
It has the property of hardly decomposing even at 0°C.
このような構成の絶縁電線にあっては、絶縁層が３層構
造となっているので、それぞれの絶縁層の厚さを薄くす
ることができ、可撓性が良好となる。また、３層構造と
なっているので、万一それぞれの絶縁層にピンホール等
の欠陥があってもその位置が重り合うことがほとんどな
いため、１層構造のものに比べて同一厚さであっても絶
−縁特性が良好となる。In the insulated wire having such a structure, since the insulating layer has a three-layer structure, the thickness of each insulating layer can be reduced, and flexibility is improved. In addition, since it has a three-layer structure, even if there is a defect such as a pinhole in each insulating layer, their positions will hardly overlap, so compared to a one-layer structure, the thickness will be the same. Even if there is, the insulation properties will be good.
ここでの架橋ポリオレフィンとしては、ポリエチレン、
ポリプロピレン、ポリ１−ブテン、ポリイソブチレン、
ポリ４−メチル−１−ペンテンなどのオレフィンモノマ
ーの単独重合体、エチレン−エチルアクリレート共重合
体（ＥＥＡ）、エチレン−酢酸ビニル共重合体（ＥＶＡ
）、エチレン−プロピレン共重合体（ＥＰＲ）、エチレ
ン−プロピレン−ジエン共重合体（ＥＰＤＭ） 、エチ
レン−ブテン−１共重合体、エチレン−ブテン−１−ジ
エン共重合体などの共重合体あるいはこれらの２種以上
のブレンドポリマーなどのポリオレフィンを架橋したも
のが用いられる。ここでの架橋方法としては、ジクミル
パーオキサイド、ｔ−ブチルクミルパーオキサイドなど
の有機過酸化物を上記ポリオレフィンに適量添加した組
成物を押出被覆し、加熱して架橋する方法、上記ポリオ
レフィンを押出被覆したのち、電子線を照射して架橋す
る方法、上記ポリオレフィンにビニルトリメトキシシラ
ン、ビニルトリエトキシシラン、ビニルトリス（β−メ
トキシエトシ）シラン等のシラン化合物と有機過酸化物
を添加して混練してシラングラフト化ポリオレフィンと
し、このシラングラフト化ポリオレフィンを押出被覆し
たのち、大気中あるいは水中で架橋させる方法などが採
用される。Here, the crosslinked polyolefin includes polyethylene,
polypropylene, poly-1-butene, polyisobutylene,
Homopolymers of olefin monomers such as poly-4-methyl-1-pentene, ethylene-ethyl acrylate copolymers (EEA), ethylene-vinyl acetate copolymers (EVA)
), ethylene-propylene copolymer (EPR), ethylene-propylene-diene copolymer (EPDM), ethylene-butene-1 copolymer, ethylene-butene-1-diene copolymer, or other copolymers thereof. A crosslinked polyolefin such as a blend polymer of two or more of the following is used. The crosslinking method here includes a method in which a composition in which an appropriate amount of an organic peroxide such as dicumyl peroxide or t-butylcumyl peroxide is added to the above polyolefin is coated by extrusion, and the above polyolefin is crosslinked by heating. After coating, a method of crosslinking by irradiating with an electron beam is performed, in which a silane compound such as vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, and an organic peroxide are added to the above polyolefin and kneaded. A method is employed in which a silane-grafted polyolefin is prepared, the silane-grafted polyolefin is extrusion coated, and then crosslinked in air or water.
次表にこの発明の実施例１〜４と、絶ｂｔ層が１層だけ
のもの、２層だけのものを比較例１〜３としたものとを
比較した。In the following table, Examples 1 to 4 of the present invention are compared with Comparative Examples 1 to 3, which are those having only one absolute bt layer and those having only two layers.
導体１に第１．２絶縁層２．４と中間層３を設けた絶縁
電線の製造方法の一例としては、タンデム押出し法を用
い、導体１を一方向へ送る途中に押出機を２つ設け、こ
れら押出機の間に設けたフェルトにシリコーンオイルを
供給し、最初の押出機の個所で導体１に第１絶縁層２を
被覆し、フェルトの個所で中間層３を塗布し、２つ目の
押出機の個所で第２絶縁層４を被覆する。中間層２の形
成は、フェルトによる塗布方式のみならず、噴霧方式を
採用しても良い。さらに、導体１に第１絶縁層２と中間
層３とを設けたものを一度巻取り、その後第２絶縁層４
を設けても良い。An example of a method for manufacturing an insulated wire in which the conductor 1 is provided with the first and second insulating layers 2.4 and the intermediate layer 3 is to use a tandem extrusion method, and two extruders are provided in the middle of feeding the conductor 1 in one direction. , silicone oil is supplied to the felt provided between these extruders, the conductor 1 is coated with the first insulating layer 2 at the first extruder, the intermediate layer 3 is applied at the felt, and the second A second insulating layer 4 is applied to the extruder. The intermediate layer 2 may be formed by not only a felt coating method but also a spraying method. Further, the conductor 1 provided with the first insulating layer 2 and the intermediate layer 3 is wound once, and then the second insulating layer 4
may be provided.
以上説明したように、この発明によれば、導体の周りに
第１絶縁層、中間層、第２絶縁層の３層が施しであるた
め、電気的欠陥が極めて少なくなる。また、中間層を形
成する液状絶縁体のオイルが潤滑保護層となるため内層
の固体絶縁層の外傷防止となる。特：こ、液状絶縁体の
塗布は、最外層を施す以前における工程内での第１絶縁
層の外傷防止に有効である。As described above, according to the present invention, since the three layers of the first insulating layer, the intermediate layer, and the second insulating layer are provided around the conductor, electrical defects are extremely reduced. Furthermore, the oil in the liquid insulator forming the intermediate layer serves as a lubricating protective layer, which prevents damage to the inner solid insulating layer. Particularly, application of the liquid insulator is effective in preventing damage to the first insulating layer during the process before applying the outermost layer.
【図面の簡単な説明】 図面はこの発明の好適な実施例を示す断面図である。 ・・・導体、 ・・・第１絶縁層、 ・・・中間層、 ・・・第２絶縁層。[Brief explanation of the drawing] The drawings are cross-sectional views showing preferred embodiments of the invention. ···conductor, ...first insulating layer, ...middle class, ...Second insulating layer.
Claims (1)
層（２）を設け、 この第１絶縁層（２）に液状絶縁体から成る中間層（３
）を介してポリフェニレンオキサイド、ポリエーテルケ
トン、ポリエーテルエーテルケトン、ポリカーボネート
、ポリブチレンテレフタレート、ポリエチレンテレフタ
レート、ポリエーテルイミド、ポリアリレート、ポリ４
−メチル−１−ペンテン、ポリサルホン、ポリエーテル
サルホン、フッ素系ポリマーおよびポリアミドから成る
群から選ばれた１種以上のポリマーからなる第２絶縁層
（４）を設けたことを特徴とする絶縁電線。 ２、前記中間層（３）の液状絶縁体が、シリコーンオイ
ル、変性シリコーンオイル、フッ素オイルから選択され
たものであることを特徴とする請求項１に記載の絶縁電
線。[Claims] 1. A first insulating layer (2) made of crosslinked polyolefin is provided on the conductor (1), and an intermediate layer (3) made of a liquid insulator is provided on this first insulating layer (2).
) through polyphenylene oxide, polyetherketone, polyetheretherketone, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polyetherimide, polyarylate, poly4
- An insulated wire characterized by being provided with a second insulating layer (4) made of one or more polymers selected from the group consisting of methyl-1-pentene, polysulfone, polyethersulfone, fluoropolymer, and polyamide. . 2. The insulated wire according to claim 1, wherein the liquid insulator of the intermediate layer (3) is selected from silicone oil, modified silicone oil, and fluorine oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29871589A JP2870547B2 (en) | 1989-11-16 | 1989-11-16 | Insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29871589A JP2870547B2 (en) | 1989-11-16 | 1989-11-16 | Insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03159008A true JPH03159008A (en) | 1991-07-09 |
| JP2870547B2 JP2870547B2 (en) | 1999-03-17 |
Family
ID=17863344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29871589A Expired - Lifetime JP2870547B2 (en) | 1989-11-16 | 1989-11-16 | Insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2870547B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120305285A1 (en) * | 2011-05-31 | 2012-12-06 | Thierry Auvray | Lan cable with dual layer pei/frpp insulation for primary conductors |
| CN111508639A (en) * | 2020-04-14 | 2020-08-07 | 苏州巨峰电气绝缘系统股份有限公司 | ATF oil-resistant corona-resistant enameled wire for electric automobile motor and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013088968A1 (en) | 2011-12-14 | 2013-06-20 | ダイキン工業株式会社 | Insulated wire |
-
1989
- 1989-11-16 JP JP29871589A patent/JP2870547B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120305285A1 (en) * | 2011-05-31 | 2012-12-06 | Thierry Auvray | Lan cable with dual layer pei/frpp insulation for primary conductors |
| US8829352B2 (en) * | 2011-05-31 | 2014-09-09 | Nexans | LAN cable with dual layer PEI/FRPP insulation for primary conductors |
| CN111508639A (en) * | 2020-04-14 | 2020-08-07 | 苏州巨峰电气绝缘系统股份有限公司 | ATF oil-resistant corona-resistant enameled wire for electric automobile motor and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2870547B2 (en) | 1999-03-17 |
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