JP2001250433A - Anti-flammable electric wire - Google Patents
Anti-flammable electric wireInfo
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- JP2001250433A JP2001250433A JP2000063492A JP2000063492A JP2001250433A JP 2001250433 A JP2001250433 A JP 2001250433A JP 2000063492 A JP2000063492 A JP 2000063492A JP 2000063492 A JP2000063492 A JP 2000063492A JP 2001250433 A JP2001250433 A JP 2001250433A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は難燃性電線に関し、
より詳しくは内燃機関を用いる道路車両の電源電線等に
好適に用いられる難燃性電線に関する。The present invention relates to a flame-retardant electric wire,
More specifically, the present invention relates to a flame-retardant electric wire suitably used as a power supply electric wire of a road vehicle using an internal combustion engine.
【０００２】[0002]
【従来の技術】ポリエチレン、エチレン共重合体あるい
はこれらの混合物を架橋した架橋ポリエチレン樹脂は、
塩化ビニル樹脂に比べ耐熱性に優れていること及び塩化
ビニル樹脂にみられる燃焼時における有害ハロゲン系ガ
スの発生という問題が無いことから、電線、ケーブルな
どの電気絶縁樹脂材料として広く用いられている。この
ような架橋ポリエチレン樹脂を電気絶縁樹脂材料に用い
た電線としては、例えば特開平１０−１０６３５４号公
報には、９０％以下の低密度ポリエチレン（以下ＬＤＰ
Ｅと略す）と残部のエチレン−エチルアクリレート共重
合（以下ＥＥＡと略す）の如きエチレン共重合体からな
る樹脂成分とシラン架橋剤とを含有する電気絶縁樹脂を
絶縁層とする家庭用、住宅用電線が開示されている。
又、自動車用電線の絶縁被覆材料に架橋ポリエチレン樹
脂を用いた例として、特開平８−１６９９９１号公報に
は、ＥＥＡ３０重量部、直鎖低密度ポリエチレン（以下
ＬＬＤＰＥと略す）７０重量部及び無機難燃剤８０重量
部からなる外皮を導体に被覆してなる難燃性電線が開示
されている。自動車用電線の絶縁被覆材料には、難燃性
に優れること、耐熱性に優れること、可とう性に優れる
こと、耐磨耗性に優れること等が要求される。しかし、
かかる特性をすべて十分満足し得る程度で具備した前記
架橋ポリエチレン樹脂は未だ得られていないのが実状で
ある。満足し得る難燃性を確保するためには、外皮の厚
みを１ｍｍ以上と比較的大きくし、かつ無機難燃剤を大
量に用いる必要があるが、上記した従来技術のように、
絶縁被覆材料中のＬＤＰＦ（又はＬＬＤＰＥ）：ＥＥＡ
重量比が５０：５０以上となると、可とう性（柔軟性）
が低下して配線が困難になったり、電線を無理に折り曲
げたときに表面が白化したり亀裂を生じたりする問題を
生じる。この問題はＬＤＰＥ（又はＬＬＤＰＥ）：ＥＥ
Ａ比を低くする（ＥＥＡ量を増大させる）ことにより解
決できるが、この場合、今度は高温時に電線同志が融着
するという問題が新たに生じる。自動車用電線は高温に
曝されるため１２０℃の高温放置試験に耐える必要があ
るが、高いＥＥＡ含量を有する外皮は高温放置試験に耐
えることができない。2. Description of the Related Art A cross-linked polyethylene resin obtained by cross-linking polyethylene, an ethylene copolymer or a mixture thereof,
It is widely used as an electric insulating resin material for electric wires and cables, because it has better heat resistance than vinyl chloride resin and does not have the problem of generating harmful halogen-based gases during combustion, which is observed in vinyl chloride resin. . As an electric wire using such a cross-linked polyethylene resin as an electric insulating resin material, for example, Japanese Patent Application Laid-Open No.
E) and the remainder, ethylene and ethyl acrylate copolymer (hereinafter abbreviated as EEA). Resin component comprising an ethylene copolymer and a silane crosslinking agent. An electric wire is disclosed.
As an example of using a crosslinked polyethylene resin as an insulating coating material for automobile electric wires, Japanese Patent Application Laid-Open No. 8-1699991 discloses that EEA is 30 parts by weight, linear low-density polyethylene (hereinafter abbreviated as LLDPE) 70 parts by weight, There is disclosed a flame-retardant electric wire formed by coating a conductor with an outer cover composed of 80 parts by weight of a flame retardant. Insulating coating materials for automotive wires are required to have excellent flame retardancy, excellent heat resistance, excellent flexibility, excellent wear resistance, and the like. But,
The reality is that the crosslinked polyethylene resin having all of these properties to a sufficiently satisfactory level has not yet been obtained. In order to secure satisfactory flame retardancy, it is necessary to make the thickness of the outer skin relatively large as 1 mm or more, and to use a large amount of an inorganic flame retardant.
LDPF (or LLDPE) in insulating coating material: EEA
When the weight ratio is 50:50 or more, flexibility (flexibility)
And the wiring becomes difficult, and when the wire is forcibly bent, the surface becomes white or cracks occur. The problem is LDPE (or LLDPE): EE
The problem can be solved by lowering the A ratio (increase the amount of EEA). However, in this case, a new problem that the electric wires fuse together at a high temperature will arise. Since electric wires for automobiles are exposed to high temperatures, it is necessary to withstand a high-temperature storage test at 120 ° C., but a sheath having a high EEA content cannot withstand the high-temperature storage test.
【０００３】[0003]
【発明が解決しようとする課題】 本発明は、自動車用
電線として好適に用いられる、耐熱性にすぐれかつ可と
う性（柔軟性）も良好な難燃性電線を提供することを課
題とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a flame-retardant electric wire which is suitably used as an electric wire for an automobile and has excellent heat resistance and good flexibility (flexibility).
【０００４】[0004]
【課題を解決するための手段】 本発明によれば、導体
の周囲を難燃性の電気絶縁外皮で被覆した難燃性電線に
おいて、該外皮を、エチレン−エチルアクリレート共重
合体７０〜１００重量％と直鎖低密度ポリエチレン系樹
脂３０〜０重量％からなる樹脂の架橋体を含む内層と、
該内層の周囲に設けた、直鎖低密度ポリエチレン系樹脂
１００〜５０重量％とエチレン−エチルアクリレート共
重合体０〜５０重量％からなる樹脂の架橋体を含む外層
から構成するとともに、該外層の厚みに対する該内層の
厚みの比を５０：５０〜９０：１０としたことを特徴と
する難燃性電線が提供される。According to the present invention, in a flame-retardant electric wire in which a conductor is covered with a flame-retardant electric insulation sheath, the sheath is made of an ethylene-ethyl acrylate copolymer 70 to 100% by weight. % And a linear low-density polyethylene-based resin containing 30 to 0% by weight of an inner layer containing a crosslinked resin,
The outer layer is provided around the inner layer and includes a crosslinked resin of 100 to 50% by weight of a linear low-density polyethylene resin and 0 to 50% by weight of an ethylene-ethyl acrylate copolymer. A flame-retardant electric wire is provided, wherein the ratio of the thickness of the inner layer to the thickness is 50:50 to 90:10.
【０００５】[0005]
【発明の実施の形態】本発明を次に図面を参照しつつ詳
細に説明する。図１において、１は導体、２は内層、３
は外層、４は外皮を示す。BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in detail with reference to the drawings. In FIG. 1, 1 is a conductor, 2 is an inner layer, 3
Indicates an outer layer, and 4 indicates an outer skin.
【０００６】１は銅線等の導体であって、複数の撚り線
からなる。４は導体１の外周囲を被覆する難燃性の電気
絶縁外皮であって、内層２と外層３から構成されてい
る。本発明の難燃性電線を自動車用電線として用いる場
合、外皮４は１〜２ｍｍの厚みを有することが望まし
い。即ち、内層２と外層３の合計厚みは１〜２ｍｍであ
ることが望ましい。この場合、外層３の厚みＴ3に対す
る内層２の厚みＴ2の比（Ｔ2：Ｔ3）を５０：５０〜９
０：１０とすることが所望の耐熱性及び可とう性を得る
ために重要である。この比（Ｔ2：Ｔ3）は好ましくは５
０：５０〜７０：３０の範囲である。Reference numeral 1 denotes a conductor such as a copper wire, which comprises a plurality of stranded wires. Numeral 4 denotes a flame-retardant electric insulating sheath that covers the outer periphery of the conductor 1 and is composed of an inner layer 2 and an outer layer 3. When the flame-retardant electric wire of the present invention is used as an electric wire for an automobile, the outer cover 4 preferably has a thickness of 1 to 2 mm. That is, the total thickness of the inner layer 2 and the outer layer 3 is desirably 1 to 2 mm. In this case, the ratio of the thickness T 2 of the inner layer 2 to the thickness T 3 of the outer layer 3 (T 2: T 3) 50: 50-9
A ratio of 0:10 is important for obtaining desired heat resistance and flexibility. This ratio (T 2 : T 3 ) is preferably 5
The range is from 0:50 to 70:30.
【０００７】内層２は、エチレン−エチルアクリレート
共重合体（ＥＥＡ）７０〜１００重量％と直鎖低密度ポ
リエチレン系樹脂（ＬＬＤＰＥ）３０〜０重量％からな
る樹脂の架橋体を含む。ＥＥＡとしては、従来慣用のも
のが制限無く使用できる。エチルアクリレート単量体単
位の含有量が１０〜５０重量％、好ましくは２０〜３０
重量％のＥＥＡが一般に用いられる。本発明において直
鎖低密度ポリエチレン系樹脂（ＬＬＤＰＥ）としては、
従来公知のものが用いられ、その比重は、０．９１０〜
０．９３０である。内層２としては、本発明の場合、Ｅ
ＥＡ７０〜９０重量％とＬＬＤＰＥ３０〜１０重量％か
らなる樹脂の架橋体を含むもの（即ち、ＥＥＡ：ＬＬＤ
ＰＥ重量比が７０：３０〜９０：１０の範囲のもの）が
可とう性の点で好ましい。The inner layer 2 contains a crosslinked resin of ethylene-ethyl acrylate copolymer (EEA) 70-100% by weight and linear low density polyethylene resin (LLDPE) 30-0% by weight. As EEA, conventional ones can be used without limitation. The content of the ethyl acrylate monomer unit is 10 to 50% by weight, preferably 20 to 30% by weight.
EEA by weight is generally used. In the present invention, as the linear low-density polyethylene resin (LLDPE),
Conventionally known ones are used, and the specific gravity is 0.910
0.930. As the inner layer 2, in the case of the present invention, E
A resin containing a crosslinked resin composed of 70 to 90% by weight of EA and 30 to 10% by weight of LLDPE (that is, EEA: LLD
(PE ratio in the range of 70:30 to 90:10) is preferred in terms of flexibility.
【０００８】外層３は、ＬＬＤＰＥ１００〜５０重量％
とＥＥＡ０〜５０重量％からなる樹脂の架橋体を含む。
外層３としては、ＬＬＤＰＥ：ＥＥＡ重量比が９０：１
０〜７０：３０の範囲のものが耐熱性及び可とう性の点
で好ましい。The outer layer 3 is made of LLDPE 100 to 50% by weight.
And a crosslinked resin of EEA0 to 50% by weight.
The outer layer 3 has an LLDPE: EEA weight ratio of 90: 1.
Those having a range of 0 to 70:30 are preferred in terms of heat resistance and flexibility.
【０００９】内層２及び外層３の各々は難燃剤を含有す
ることにより難燃性電線とされている。難燃剤としては
水酸化マグネシウム、水酸化アルミニウム、それらの表
面変性物などの金属水酸化物難燃剤が通常用いられる。
内層２及び外層３における難燃剤の使用量は、通常、内
層２及び外層３のそれぞれの樹脂１００重量部あたり３
０〜１２０重量部、好ましくは６０〜１００重量部であ
る。Each of the inner layer 2 and the outer layer 3 is a flame-retardant electric wire by containing a flame retardant. As the flame retardant, metal hydroxide flame retardants such as magnesium hydroxide, aluminum hydroxide, and surface modified products thereof are usually used.
The amount of the flame retardant used in the inner layer 2 and the outer layer 3 is usually 3 per 100 parts by weight of each resin of the inner layer 2 and the outer layer 3.
0 to 120 parts by weight, preferably 60 to 100 parts by weight.
【００１０】又、内層２及び外層３の各々には、本発明
の目的を損なうことが無い限り、着色剤、老化防止剤、
滑剤等の種々の添加剤を必要に応じ加えることができ、
その量はそれぞれの樹脂１００重量部あたり０〜５重量
部である。Each of the inner layer 2 and the outer layer 3 includes a coloring agent, an antioxidant, and a colorant, as long as the object of the present invention is not impaired.
Various additives such as lubricants can be added as needed,
The amount is 0 to 5 parts by weight per 100 parts by weight of each resin.
【００１１】本発明の難燃性電線は、導体１の周囲に前
記した内層２及び外層３の樹脂組成物を押出成形し、次
いで電子線照射により架橋することにより容易に得るこ
とができる。この場合、押出機としては、タンデム型の
２台の押出機を用いて共押出可能なことから、単層の外
皮を形成する場合に比べてコスト高を招くことなく難燃
性電線を製造することができる。また、前記内層２及び
外層３の架橋は、それらの層を構成する組成物にあらか
じめシラン架橋剤を添加しておくこと等によっても行う
ことができる。The flame-retardant electric wire of the present invention can be easily obtained by extruding the resin composition of the inner layer 2 and the outer layer 3 around the conductor 1 and then crosslinking by electron beam irradiation. In this case, since two extruders of a tandem type can be co-extruded as extruders, a flame-retardant electric wire is manufactured without incurring a higher cost than in the case of forming a single-layer outer skin. be able to. The cross-linking of the inner layer 2 and the outer layer 3 can also be performed by, for example, adding a silane cross-linking agent to the composition constituting the layers in advance.
【００１２】前記内層２及び外層３の架橋率は、樹脂が
不溶不融性になる架橋率であればよく、特に制約されな
いが、通常、ゲル分率（ＪＡＳＯ規格）で表して、５０
％以上、好ましくは７０％以上である。The crosslinking rate of the inner layer 2 and the outer layer 3 is not particularly limited as long as the crosslinking rate at which the resin becomes insoluble and infusible is not particularly limited, but is usually expressed as a gel fraction (JASO standard).
%, Preferably 70% or more.
【００１３】[0013]
【実施例】次に本発明を実施例によりさらに詳述する。
なお、電線の耐溶着性及び柔軟性は、以下のテストによ
り測定された。 （１）耐溶着性テスト 電線サンプル（長さ２５０ｍｍ）を２本並べ、各端部５
０ｍｍを残し、中央部１５０ｍｍにハーネス用テープを
巻成し、これを１２０℃の温度下に１２０時間放置す
る。次いで、引張試験機にて、その一方の端部に突出し
ている２本の電線の各端部を相互にひき離すようにして
引張り、その２本の電線を引き剥し、その際の剥れ力を
測定する。この場合、その剥れ力の小さい程、耐溶着性
の良いことを示す。 （２）柔軟性テスト 長さ４０π（ｍｍ）以上の電線サンプルを、その一方の
端部にロードセルを装着曲げ半径が４０ｍｍの半円形状
が形成されるまで曲げ、その際の最大荷重を測定する。
この場合、その最大荷重の小さいもの程柔軟性の良いこ
とを示す。Next, the present invention will be described in more detail by way of examples.
In addition, the welding resistance and flexibility of the electric wire were measured by the following tests. (1) Welding resistance test Two wire samples (250 mm in length) were lined up and each end 5
A harness tape is wound around a central portion of 150 mm except for 0 mm, and this is left at a temperature of 120 ° C. for 120 hours. Then, using a tensile tester, each end of the two electric wires protruding from one end thereof is pulled so as to be separated from each other, and the two electric wires are peeled off. Is measured. In this case, the smaller the peeling force, the better the welding resistance. (2) Flexibility test A wire sample having a length of 40π (mm) or more is fitted with a load cell at one end thereof and bent until a semicircular shape having a bending radius of 40 mm is formed, and the maximum load at that time is measured. .
In this case, the smaller the maximum load, the better the flexibility.
【００１４】実施例１ 撚り線の外周囲に対して、内層と外層とからなる外皮を
形成して図１に示す構造の難燃性電線を作製した。この
場合、撚り線１としては、直径０．３２ｍｍの銅線１７
１本を撚った直径５．３ｍｍのものを用いた。また、内
層２を得るための基材樹脂組成物としては、エチルアク
リレート単量体含有量が２３重量％のエチレン−エチル
アクリレート（ＥＥＡ）９０重量％と直鎖低密度ポリエ
チレン系樹脂（ＬＬＤＰＥ）（比重：０．９２）１０重
量％との混合樹脂１００重量部に対して、難燃剤として
水酸化アルミニウム８０重量部を配合したものを用い
た。外層３を得るための基材樹脂組成物としては、上記
と同じエチレン−エチレンアクリル（ＥＥＡ）３０重量
％と上記と同じ直鎖低密度ポリエチレン系樹脂（ＬＬＤ
ＰＥ）７０重量％との混合樹脂１００重量部に対して、
難燃剤として水酸化アルミニウム８０重量部を配合した
ものを用いた。撚り線１の外周囲に外皮４を形成した難
燃性電線は、電子線照射して架橋化処理を施した。この
場合、外層３のゲル分率は７５％であり、内層２のゲル
分率は８０％であった。Example 1 A flame-retardant electric wire having a structure shown in FIG. 1 was produced by forming an outer skin composed of an inner layer and an outer layer around the outer periphery of a stranded wire. In this case, the stranded wire 1 is a copper wire 17 having a diameter of 0.32 mm.
One having a twisted diameter of 5.3 mm was used. The base resin composition for obtaining the inner layer 2 includes 90% by weight of ethylene-ethyl acrylate (EEA) having an ethyl acrylate monomer content of 23% by weight and a linear low density polyethylene resin (LLDPE) ( A resin prepared by mixing 80 parts by weight of aluminum hydroxide as a flame retardant with 100 parts by weight of a resin mixture containing 10% by weight of specific gravity: 0.92) was used. As the base resin composition for obtaining the outer layer 3, the same ethylene-ethylene acryl (EEA) 30% by weight as above and the same linear low-density polyethylene resin (LLD) as above
PE) and 100 parts by weight of the mixed resin with 70% by weight,
A mixture containing 80 parts by weight of aluminum hydroxide was used as a flame retardant. The flame-retardant electric wire having the outer sheath 4 formed around the outer periphery of the stranded wire 1 was subjected to a cross-linking treatment by irradiation with an electron beam. In this case, the gel fraction of the outer layer 3 was 75%, and the gel fraction of the inner layer 2 was 80%.
【００１５】撚り線１の外周囲に対する外皮４の形成
は、タンデム型の２台の押出機を用い、撚り線１の外周
囲に対して、前記内層用樹脂組成物と外層用樹脂組成物
を、通常の共押出法により押出すことによって作製し
た。この場合、内層２の厚みは０．９ｍｍであり、外層
３の厚みは０．２ｍｍである。外層３の厚みに対する内
層２の厚みの比は８２：１８である。このようにして得
られた難燃性電線は、前期テストの結果、柔軟性に富む
とともに、耐溶着性にもすぐれ、その外皮には溶着を生
じなかった。The outer skin 4 is formed on the outer periphery of the stranded wire 1 by using two tandem extruders. The inner layer resin composition and the outer layer resin composition are applied to the outer periphery of the stranded wire 1. And extruded by a usual co-extrusion method. In this case, the thickness of the inner layer 2 is 0.9 mm, and the thickness of the outer layer 3 is 0.2 mm. The ratio of the thickness of the inner layer 2 to the thickness of the outer layer 3 is 82:18. The flame-retardant electric wire obtained in this way was rich in flexibility and excellent in welding resistance as a result of the above-mentioned test, and did not cause welding on the outer skin.
【００１６】比較例１ 実施例１において、外層３の材料としてＥＥＡ９０重量
％とＬＬＤＰＥ１０重量％からなる混合樹脂を用いた以
外は同様にして実験を行った。この場合、得られた難燃
性電線は、前期テストの結果、耐溶着性に劣るものであ
った。Comparative Example 1 An experiment was conducted in the same manner as in Example 1, except that a mixed resin composed of 90% by weight of EEA and 10% by weight of LLDPE was used as the material of the outer layer 3. In this case, the obtained flame-retardant electric wire was inferior in welding resistance as a result of the previous test.
【００１７】比較例２ 実施例１において、内層２の材料としてＥＥＡ３０重量
％とＬＬＤＰＥ７０重量％からなる混合樹脂を用いた以
外は同様にして実験を行った。この場合、得られた難燃
性電線は、前期テストの結果、柔軟性に劣るものであっ
た。Comparative Example 2 An experiment was conducted in the same manner as in Example 1, except that a mixed resin consisting of 30% by weight of EEA and 70% by weight of LLDPE was used as the material of the inner layer 2. In this case, the obtained flame-retardant electric wire was inferior in flexibility as a result of the previous test.
【００１８】[0018]
【発明の効果】本発明によれば、可とう性（柔軟性）に
すぐれるとともに、耐熱性にもすぐれ、９０〜１２０℃
に加熱してその外皮に溶着性を生じることのない難燃性
電線が提供される。According to the present invention, excellent flexibility (flexibility), excellent heat resistance, and 90 to 120 ° C.
The present invention provides a flame-retardant electric wire which is not heated and does not cause welding to its outer cover.
【図１】本発明の電線の断面図を示す。FIG. 1 shows a sectional view of an electric wire of the present invention.
１ 導体 ２ 内層 ３ 外層 ４ 外皮 1 conductor 2 inner layer 3 outer layer 4 outer skin
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０１Ｂ 7/29 Ｈ０１Ｂ 7/34 Ａ (72)発明者 義村 昌伸 愛知県名古屋市南区菊住一丁目７番10号 株式会社ハーネス総合技術研究所内 Ｆターム(参考） 4J002 BB03X BB07W BG04W DE076 DE146 FD136 GQ01 5G313 AB02 AB09 AC02 AD03 AE02 AE07 5G315 CA03 CB02 CC09 CD02 CD04 CD14 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification FI FI Theme Court ゛ (Reference) H01B 7/29 H01B 7/34 A (72) Inventor Masanobu Yoshimura 1-7-7 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture No. 10 F-term in Harness Research Institute, Inc. (reference) 4J002 BB03X BB07W BG04W DE076 DE146 FD136 GQ01 5G313 AB02 AB09 AC02 AD03 AE02 AE07 5G315 CA03 CB02 CC09 CD02 CD04 CD14
Claims (5)
覆した難燃性電線において、該外皮を、エチレン−エチ
ルアクリレート共重合体７０〜１００重量％と直鎖低密
度ポリエチレン３０〜０重量％からなる樹脂の架橋体を
含む内層と、該内層の周囲に設けた、直鎖低密度ポリエ
チレン１００〜５０重量％とエチレン−エチルアクリレ
ート共重合体０〜５０重量％からなる樹脂の架橋体を含
む外層から構成するとともに、該外層の厚みに対する内
層の厚みの比を５０：５０〜９０：１０としたことを特
徴とする難燃性電線。1. A flame-retardant electric wire in which the periphery of a conductor is coated with a flame-retardant electric insulation sheath, wherein the sheath comprises 70 to 100% by weight of an ethylene-ethyl acrylate copolymer and 30 to 0% of a linear low-density polyethylene. % By weight of an inner layer containing a crosslinked resin of resin, and a crosslinked resin of 100 to 50% by weight of a linear low-density polyethylene and 0 to 50% by weight of an ethylene-ethyl acrylate copolymer provided around the inner layer. And a ratio of the thickness of the inner layer to the thickness of the outer layer is 50:50 to 90:10.
求項１に記載の難燃性電線。2. The flame-retardant electric wire according to claim 1, wherein the outer cover has a thickness of 1 to 2 mm.
樹脂９０〜７０重量％とエチレン−エチルアクリレート
共重合体１０〜３０重量％からなる樹脂の架橋体を含む
請求項１又は２に記載の難燃性電線。3. The method according to claim 1, wherein the outer layer comprises a crosslinked resin comprising 90 to 70% by weight of a linear low-density polyethylene resin and 10 to 30% by weight of an ethylene-ethyl acrylate copolymer. Flame retardant wires.
ート共重合体７０〜９０重量％と直鎖低密度ポリエチレ
ン系樹脂３０〜１０重量％からなる樹脂の架橋体を含む
請求項１〜３のいずれかに記載の難燃性電線。4. The method according to claim 1, wherein the inner layer comprises a crosslinked resin comprising 70 to 90% by weight of an ethylene-ethyl acrylate copolymer and 30 to 10% by weight of a linear low density polyethylene resin. The flame-retardant electric wire according to 1.
物難燃剤をそれぞれの樹脂１００重量部あたり３０〜１
２０重童部含む請求項１〜４のいずれかに記載の難燃性
電線。5. Each of the inner layer and the outer layer contains a metal hydroxide flame retardant in an amount of 30 to 1 per 100 parts by weight of each resin.
The flame-retardant electric wire according to any one of claims 1 to 4, including a 20-year-old child part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063492A JP4174165B2 (en) | 2000-03-08 | 2000-03-08 | Flame retardant wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063492A JP4174165B2 (en) | 2000-03-08 | 2000-03-08 | Flame retardant wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001250433A true JP2001250433A (en) | 2001-09-14 |
| JP4174165B2 JP4174165B2 (en) | 2008-10-29 |
Family
ID=18583347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000063492A Expired - Fee Related JP4174165B2 (en) | 2000-03-08 | 2000-03-08 | Flame retardant wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4174165B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006253093A (en) * | 2005-03-14 | 2006-09-21 | Mitsubishi Cable Ind Ltd | Electric wire for automobile |
| JP2007188668A (en) * | 2006-01-11 | 2007-07-26 | Fuji Densen Kk | Fireproof cable |
| EP2757564A1 (en) * | 2013-01-17 | 2014-07-23 | Certaldese S.P.A. | Electrical cable, particularly adapted to environments for dwelling and/or office use and the like |
-
2000
- 2000-03-08 JP JP2000063492A patent/JP4174165B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006253093A (en) * | 2005-03-14 | 2006-09-21 | Mitsubishi Cable Ind Ltd | Electric wire for automobile |
| JP2007188668A (en) * | 2006-01-11 | 2007-07-26 | Fuji Densen Kk | Fireproof cable |
| JP4659624B2 (en) * | 2006-01-11 | 2011-03-30 | 冨士電線株式会社 | Fireproof cable |
| EP2757564A1 (en) * | 2013-01-17 | 2014-07-23 | Certaldese S.P.A. | Electrical cable, particularly adapted to environments for dwelling and/or office use and the like |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4174165B2 (en) | 2008-10-29 |
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