JP2001283650A - Water-tight filling composition and water-tight insulating cable - Google Patents
Water-tight filling composition and water-tight insulating cableInfo
- Publication number
- JP2001283650A JP2001283650A JP2000096624A JP2000096624A JP2001283650A JP 2001283650 A JP2001283650 A JP 2001283650A JP 2000096624 A JP2000096624 A JP 2000096624A JP 2000096624 A JP2000096624 A JP 2000096624A JP 2001283650 A JP2001283650 A JP 2001283650A
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- Prior art keywords
- weight
- water
- conductor
- watertight
- filling composition
- Prior art date
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、絶縁電線用水密充
填組成物及びこれを用いてなる水密絶縁電線に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight filling composition for insulated wires and a watertight insulated wire using the same.
【０００２】[0002]
【従来の技術】架空配線用絶縁電線は、製造時における
残留応力、及び架線時における雨水の浸入による腐食が
主な原因となって、断線（応力腐食断線）が発生し易
い。2. Description of the Related Art Insulated electric wires for overhead wiring are liable to be broken (stress-corrosion broken) mainly due to residual stress at the time of manufacturing and corrosion due to infiltration of rainwater during overhead wiring.
【０００３】これを解決するために、接続部位の防水シ
ールの強化、防錆剤の注入、皮剥ぎによる雨水の除去、
残留応力の除去、水密充填組成物入り絶縁電線等による
対策が施されている。In order to solve this problem, a waterproof seal at a connection portion is reinforced, a rust inhibitor is injected, rainwater is removed by peeling, and the like.
Measures have been taken to remove residual stress and to use insulated wires containing a watertight filling composition.
【０００４】ここで、水密充填組成物入り絶縁電線（以
下、水密絶縁電線という）とは、図１に示すように、複
数の導体素線からなる、いわゆる撚り線導体１を絶縁被
膜３で被覆した絶縁電線４であって、絶縁被膜３と撚り
線導体１の間、及び撚り線導体１の複数の導体素線間の
空隙に水密充填組成物２を充填したものをいう。導体素
線としては、通常は銅素線が用いられる。Here, an insulated wire containing a watertight filling composition (hereinafter referred to as a watertight insulated wire) is a so-called stranded wire conductor 1 composed of a plurality of conductor strands covered with an insulating coating 3 as shown in FIG. It is an insulated wire 4 in which the watertight filling composition 2 is filled in the gaps between the insulating coating 3 and the stranded conductor 1 and between the plurality of conductor strands of the stranded conductor 1. Normally, a copper wire is used as the conductor wire.
【０００５】[0005]
【発明が解決しようとする課題】上記した対策のうち水
密絶縁電線に関しては、水密性、皮剥ぎ性、及び耐腐食
性の優れたものが要求され、水密充填組成物に種々の改
良が施されているが、従来の水密充填組成物には次のよ
うな問題がある。Among the above measures, the watertight insulated wire is required to have excellent watertightness, peelability and corrosion resistance, and various improvements have been made to the watertight filling composition. However, the conventional watertight packing composition has the following problems.
【０００６】すなわち、水密絶縁組成物のベースポリマ
ーとしては、現在、ＥＶＡ（エチレン酢酸ビニル）系共
重合体、ＥＥＡ（エチレン−アクリル酸エチル）系共重
合体が主に使用されているが、これらの共重合体を使用
した水密充填組成物においては、水密性の向上を追求す
れば、皮剥ぎ性が低下する傾向があり、一方、皮剥ぎ性
の向上を追求すれば水密性が低下するという一般的傾向
がある。そして、水密性が不十分な場合は、雨水が浸入
して腐食が発生する可能性がある。That is, as a base polymer of a watertight insulating composition, EVA (ethylene vinyl acetate) copolymer and EEA (ethylene-ethyl acrylate) copolymer are mainly used at present. In a watertight filling composition using a copolymer of the above, if the improvement of watertightness is pursued, the peelability tends to decrease, while the watertightness decreases if the improvement of skinnability is pursued. There is a general tendency. If the watertightness is insufficient, rainwater may enter and cause corrosion.
【０００７】本発明は、上記に鑑みてなされたもので、
水密性と皮剥ぎ性のバランスがとれ、耐腐食性の優れた
水密絶縁電線、及びこれを得るための水密充填組成物を
提供することを課題とする。[0007] The present invention has been made in view of the above,
An object of the present invention is to provide a watertight insulated wire having a good balance between watertightness and peeling properties and excellent corrosion resistance, and a watertight filling composition for obtaining the same.
【０００８】[0008]
【課題を解決するための手段】本発明者は、上記課題を
解決するために、鋭意研究を行った結果、エチレン−ア
クリル酸系誘導体−無水マレイン酸又はエチレン−メタ
クリル酸系誘導体−無水マレイン酸３元共重合体（以
下、ターポリマーともいう）を使用した水密充填組成物
が、水密性、皮剥ぎ性、腐食性において良好な結果を与
えることを見出した。Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above problems, and as a result, have found that ethylene-acrylic acid derivatives-maleic anhydride or ethylene-methacrylic acid derivatives-maleic anhydride. It has been found that a watertight packing composition using a terpolymer (hereinafter, also referred to as a terpolymer) gives good results in watertightness, peelability and corrosiveness.
【０００９】すなわち、請求項１の水密充填組成物は、
絶縁電線用水密充填組成物であって、エチレンユニット
と、アクリル酸系誘導体ユニット又はメタクリル酸系ユ
ニットの総含有量が９９〜９０重量％であり、無水マレ
イン酸ユニット含有量が１〜１０重量％である、エチレ
ン−アクリル酸系誘導体−無水マレイン酸又はエチレン
−メタクリル酸系誘導体−無水マレイン酸３元共重合体
１００重量部に対し、カーボンブラック０．１〜２．０
重量部、及び老化防止剤０．１〜１．０重量部を配合し
てなるものとする。That is, the watertightly packed composition of claim 1 is
A watertight filling composition for an insulated wire, wherein the total content of an ethylene unit and an acrylic acid-based derivative unit or a methacrylic acid-based unit is 99 to 90% by weight, and the content of a maleic anhydride unit is 1 to 10% by weight. With respect to 100 parts by weight of the ethylene-acrylic acid derivative-maleic anhydride or ethylene-methacrylic acid derivative-maleic anhydride terpolymer, carbon black 0.1 to 2.0
Parts by weight and 0.1 to 1.0 parts by weight of an antioxidant.
【００１０】請求項２の水密絶縁電線は、複数の導体素
線からなる導体を絶縁被膜で被覆した絶縁電線であっ
て、前記複数の導体素線間及び導体−絶縁被膜間に請求
項１に記載の水密充填組成物を充填してなるものとす
る。A watertight insulated wire according to a second aspect of the present invention is an insulated wire in which a conductor composed of a plurality of conductor strands is coated with an insulating coating, and between the plurality of conductor strands and between the conductor and the insulating coating. It shall be filled with the described watertight filling composition.
【００１１】[0011]
【発明の実施の形態】１．水密充填組成物 上記したように、本発明の水密充填組成物においては、
エチレンユニットと、アクリル酸系誘導体ユニット又は
メタクリル酸系ユニットの総含有量が９９〜９０重量％
であり、無水マレイン酸ユニット含有量１〜１０重量％
である、エチレン−アクリル酸系誘導体−無水マレイン
酸又はエチレン−メタクリル酸系誘導体−無水マレイン
酸ターポリマーを用いる。BEST MODE FOR CARRYING OUT THE INVENTION Watertight packing composition As described above, in the watertight packing composition of the present invention,
The total content of ethylene units and acrylic acid derivative units or methacrylic acid units is 99 to 90% by weight.
And maleic anhydride unit content of 1 to 10% by weight
An ethylene-acrylic acid derivative-maleic anhydride or ethylene-methacrylic acid derivative-maleic anhydride terpolymer is used.
【００１２】ここで、アクリル酸系誘導体とは、アクリ
ル酸、アクリル酸エステル（メチル、エチル等のアルキ
ルエステル）、ヒドロキシエチルアクリレートをいう。
また、メタクリル酸系誘導体とは、メタクリル酸、メタ
クリル酸エステル（メチル、エチル等のアルキルエステ
ル）、ヒドロキシエチルメタクリレートをいう。Here, the acrylic acid derivatives refer to acrylic acid, acrylic acid esters (alkyl esters such as methyl and ethyl), and hydroxyethyl acrylate.
The methacrylic acid derivative refers to methacrylic acid, methacrylic acid esters (alkyl esters such as methyl and ethyl), and hydroxyethyl methacrylate.
【００１３】ターポリマーは、ランダムポリマー、ブロ
ックポリマー、それらの混合物のいずれも使用可能であ
る。As the terpolymer, any of a random polymer, a block polymer, and a mixture thereof can be used.
【００１４】ターポリマーの分子量は特に限定されない
が、重量平均分子量で２０，０００〜３００，０００程
度が好ましい。The molecular weight of the terpolymer is not particularly limited, but is preferably about 20,000 to 300,000 in terms of weight average molecular weight.
【００１５】ターポリマーにおける無水マレイン酸ユニ
ットの含有量は、上記のように１〜１０重量％とする。
含有量が１０重量％を越えると、密着性が向上しすぎて
皮剥ぎ性が悪くなり、皮剥ぎ試験において充填組成物の
付着残存が発生し易い。また、吸湿性も悪化する傾向が
ある。一方、含有量が１．０重量％未満では、密着性が
不十分となる。The content of the maleic anhydride unit in the terpolymer is 1 to 10% by weight as described above.
If the content exceeds 10% by weight, the adhesion is excessively improved, and the peeling property is deteriorated. In the peeling test, the adhesion of the filling composition is likely to occur. In addition, the hygroscopicity tends to deteriorate. On the other hand, if the content is less than 1.0% by weight, the adhesion becomes insufficient.
【００１６】また、アクリル酸またはメタクリル酸系誘
導体ユニットの含有量は１０〜３０重量％の範囲が好ま
しい。この含有量が１０重量％未満の場合は、可撓性が
乏しくなり、粘着力が不足し易い。また、３０重量％を
越えると、抗張力、引張り強さの低下を招き、物性が劣
る傾向にある。The content of the acrylic acid or methacrylic acid derivative unit is preferably in the range of 10 to 30% by weight. When this content is less than 10% by weight, flexibility is poor and adhesive strength tends to be insufficient. On the other hand, if it exceeds 30% by weight, the tensile strength and the tensile strength are reduced, and the physical properties tend to be inferior.
【００１７】上記ターポリマーは１種を単独で用いても
よく、２種以上を混合して用いてもよい。The above terpolymers may be used alone or as a mixture of two or more.
【００１８】また、上記ターポリマーに、ＥＶＡ変性樹
脂、ＥＥＡ、エチレン・αオレフィン共重合体、ＭＤＰ
Ｅ、ＬＬＤＰＥ、メタロセンＰＥ、アイオノマー等の樹
脂を混合して使用することも可能であるが、その場合、
上記ターポリマー以外の樹脂の使用量は１５重量％以下
とする。The terpolymer may be modified with EVA-modified resin, EEA, ethylene / α-olefin copolymer, MDP
It is also possible to use a mixture of resins such as E, LLDPE, metallocene PE, and ionomer, but in that case,
The amount of the resin other than the terpolymer is 15% by weight or less.
【００１９】本発明では、上記ターポリマー１００重量
部に対し、カーボンブラック０．１〜２．０重量部、及
び老化防止剤０．１〜１．０重量部を配合する。In the present invention, 0.1 to 2.0 parts by weight of carbon black and 0.1 to 1.0 part by weight of an antioxidant are added to 100 parts by weight of the terpolymer.
【００２０】カーボンブラックの添加量が０．１重量部
未満では、着色および耐候性の効果が得られない。カー
ボンブラックの添加量が２．０重量部を越えると、耐ト
ラッキング性能の低下を招く傾向がある。If the amount of carbon black is less than 0.1 parts by weight, the effects of coloring and weather resistance cannot be obtained. If the amount of carbon black exceeds 2.0 parts by weight, the tracking resistance tends to decrease.
【００２１】老化防止剤の種類は特に限定されず、アミ
ン系、フェノール系、イミダゾール系、アミン−アルデ
ヒド系、アミン−ケトン系、イオウ系、リン系等の従来
用いられているものが適宜使用可能である。The type of the antioxidant is not particularly limited, and those which are conventionally used, such as amine-based, phenol-based, imidazole-based, amine-aldehyde-based, amine-ketone-based, sulfur-based, and phosphorus-based, can be appropriately used. It is.
【００２２】老化防止剤の量が０．１重量部未満では、
耐候性が悪くなり劣化が激しくなる。老化防止剤の量が
１．０重量部を越えると、絶縁被膜の硬化阻害を招いた
り、硬化不良をおこす可能性がある。When the amount of the antioxidant is less than 0.1 part by weight,
The weather resistance deteriorates and the deterioration becomes severe. When the amount of the antioxidant exceeds 1.0 part by weight, there is a possibility that the curing of the insulating film is inhibited or curing failure occurs.
【００２３】本発明の水密充填組成物には、これ以外に
従来より同種の充填組成物に用いられている添加物を適
宜添加することもできる。In addition to the watertight packing composition of the present invention, additives conventionally used for the same kind of filling composition may be appropriately added.
【００２４】本発明の水密充填組成物を用いることによ
り、水密絶縁電線の水密性と皮剥ぎ性のバランスがと
れ、耐腐食性が向上するのは、アクリル酸エステル又は
メタクリル酸エステルユニットによる柔軟性の発現、及
び無水マレイン酸導入による導体への安定した密着力の
発現が寄与するためと考えられる。The use of the watertight filling composition of the present invention balances the watertightness and the peelability of the watertight insulated wire and improves the corrosion resistance because of the flexibility of the acrylate or methacrylate unit. This is thought to be due to the contribution of the development of a stable adhesion to the conductor by the introduction of maleic anhydride.
【００２５】２．水密絶縁電線 本発明の水密絶縁電線の構造は、図１に示す従来の水密
絶縁電線と同様の構造とすることができるが、絶縁被膜
３と導体１の間、及び導体１の複数の導体素線間の空隙
に充填される水密充填組成物２として、上記した本発明
の水密充填組成物を使用する。2. Watertight Insulated Wire The structure of the watertight insulated wire of the present invention can be the same as the structure of the conventional watertight insulated wire shown in FIG. 1, but between the insulating coating 3 and the conductor 1 and a plurality of conductor elements of the conductor 1. As the watertight filling composition 2 filled in the space between the lines, the above watertight packing composition of the present invention is used.
【００２６】なお、導体１を構成する導体素線としては
硬銅線が、絶縁被膜３としては架橋ポリエチレンが通常
用いられる。It is to be noted that a hard copper wire is usually used as a conductor element wire constituting the conductor 1 and a crosslinked polyethylene is usually used as an insulating coating 3.
【００２７】水密絶縁電線の製造方法も、従来と同様の
方法が使用でき、複数の導体素線を撚り合わせながら本
発明の水密充填組成物を充填し、撚り合わされた導体上
にも本発明の水密充填組成物を塗布して、その外周を絶
縁樹脂（被膜）で被覆すればよい。The same method as that of the conventional method can be used for producing a water-tight insulated wire. The water-tight filling composition of the present invention is filled while a plurality of conductor strands are twisted, and the present invention is applied to the stranded conductor. What is necessary is just to apply a watertight filling composition and coat the outer periphery with an insulating resin (coating).
【００２８】[0028]
【実施例】以下、本発明を実施例に基づいてより具体的
に説明するが、本発明はこれによって限定されるもので
はない。EXAMPLES Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited thereto.
【００２９】実施例１，２ ターポリマー、カーボンブラック、老化防止剤を、表１
に示した割合（重量部）で配合し、十分に混合して、水
密充填組成物を調製した。 Examples 1 and 2 Terpolymer, carbon black and antioxidant are shown in Table 1.
The mixture was blended in the ratio (parts by weight) shown in Table 2 and mixed well to prepare a watertight packing composition.
【００３０】ただし、ターポリマー、カーボンブラッ
ク、老化防止剤としては以下のものを使用した。However, the following were used as the terpolymer, carbon black and antioxidant.
【００３１】 ターポリマー（１） 日本ポリオレフィン（株）製レク
スパールＥＴ２１５Ｍ ターポリマー（２） 日本ポリオレフィン（株）製レク
スパールＥＴ２３４Ｍ カーボンブラック 東海カーボン（株）製シースト３Ｈ 老化防止剤 住友化学工業（株）製スミライザーＷＸ−
Ｒ比較例１，２ 上記ターポリマーに代えて、ＥＥＡ系樹脂（三井デュポ
ン（株）製ＥＶＡＦＬＥＸ−ＥＥＡ ７０７）、ＥＶＡ
系樹脂（三井デュポン（株）製ＥＶＡＦＬＥＸ２２０
＃）を表１に示した割合でそれぞれ用いた以外は、実施
例１，２と同様にして水密充填組成物を調製した。Terpolymer (1) Lexpearl ET215M manufactured by Nippon Polyolefin Co., Ltd. Terpolymer (2) Lexpearl ET234M carbon black manufactured by Nippon Polyolefin Co., Ltd. Seast 3H antiaging agent manufactured by Tokai Carbon Co., Ltd. Sumitomo Chemical Co., Ltd. SUMILIZER WX-
R Comparative Examples 1 and 2 EEA resin (EVAFLEX-EEA 707 manufactured by Du Pont-Mitsui Co., Ltd.) instead of the above terpolymer, EVA
Resin (EVAFLEX220 manufactured by Mitsui DuPont)
A watertight packing composition was prepared in the same manner as in Examples 1 and 2, except that #) was used in the proportions shown in Table 1.
【００３２】水密絶縁電線の製造 外径２．０ｍｍφの銅素線を１９本撚り合わせながら上
記実施例及び比較例の水密充填組成物を銅素線間に充填
し、導体上にも同じ水密充填組成物を塗布して、その外
周にポリエチレン樹脂を押し出し硬化させて被覆し、水
密絶縁電線を製造した。 Manufacture of Watertight Insulated Wire While twisting 19 copper wires having an outer diameter of 2.0 mmφ, the watertight filling compositions of the above Examples and Comparative Examples were filled between the copper wires and the same watertight filling was carried out on the conductor. The composition was applied, and a polyethylene resin was extruded and cured on the outer periphery to coat the outer periphery, thereby producing a watertight insulated wire.
【００３３】製造した水密絶縁電線から評価サンプルを
採取し、水密性の評価としての走水性試験、皮剥ぎ試
験、耐腐食性の評価としての加熱防水試験を実施した。An evaluation sample was taken from the manufactured watertight insulated wire, and a water running test as a watertightness evaluation, a skin peeling test, and a heat and water resistance test as an evaluation of corrosion resistance were carried out.
【００３４】走水性試験は、２ｍに切断した水密絶縁電
線の片端を水中に導入し、０．５気圧を加圧して、この
電線内へ水が浸入した距離（走水距離、単位：ｍｍ）を
調べた。In the water running test, one end of a water-tight insulated wire cut into 2 m was introduced into water, 0.5 atm was pressurized, and the water penetrated into the wire (water running distance, unit: mm). Was examined.
【００３５】皮剥ぎ試験は、ピラー（皮剥ぎ機）による
皮剥ぎを行い、充填組成物の導体上の付着残存量を目視
で観察し、Ａ〜Ｄの４段階（Ａ・Ｂは合格、Ｃ・Ｄは不
合格）で評価した。In the peeling test, the peeling was carried out by a pillar (peeling machine), the amount of the remaining residue of the filling composition on the conductor was visually observed, and four stages of A to D (A and B passed, C・ D was rejected).
【００３６】加熱防水試験は、試料を水中に深さ３０ｃ
ｍ以上浸漬し、撹拌下、流量約０．５リットル／分の空
気を流しながら、８時間ＯＮ（うち４時間以上９０
℃）、１６時間ＯＦＦのヒートサイクルを１ヶ月間与え
た後解体して、導体素線間への温水侵入によるに変色が
生じているかどうかを調べた。変色の生じなかったもの
を○、一部生じたものを×とした。In the heating waterproof test, the sample was immersed in water at a depth of 30 c.
m for at least 8 hours (including at least 90% for 4 hours)
C.) and a heat cycle of OFF for 16 hours was given for one month, and disassembled, and it was examined whether discoloration had occurred due to intrusion of warm water between the conductor strands.も の indicates that no discoloration occurred, and x indicates partially occurred.
【００３７】各試験の結果を表１に併せて示す。The results of each test are shown in Table 1.
【００３８】[0038]
【表１】 [Table 1]
【００３９】[0039]
【発明の効果】本発明の水密充填組成物によれば、水密
性と皮剥ぎ性のバランスがとれた水密絶縁電線が得られ
る。従って、本発明の水密絶縁電線は、雨水等の侵入に
よる腐食が生じにくく、よって断線も起こりにくい、信
頼性の高いものとなる。According to the watertight filling composition of the present invention, a watertight insulated wire having a good balance between watertightness and peelability can be obtained. Therefore, the watertight insulated wire of the present invention is less susceptible to corrosion due to intrusion of rainwater and the like, and is therefore less likely to break and has high reliability.
【図面の簡単な説明】[Brief description of the drawings]
【図１】水密絶縁電線を示す模式断面図である。FIG. 1 is a schematic sectional view showing a watertight insulated wire.
１……導体（撚り線導体） ２……水密充填組成物 ３……絶縁被膜 ４……絶縁電線 DESCRIPTION OF SYMBOLS 1 ... Conductor (stranded wire conductor) 2 ... Watertight filling composition 3 ... Insulating coating 4 ... Insulated wire
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福田 孝祝 大阪府東大阪市岩田町２丁目３番１号 タ ツタ電線株式会社内 (72)発明者 川邊 久史 大阪府東大阪市岩田町２丁目３番１号 タ ツタ電線株式会社内 Ｆターム(参考） 4J002 BB041 BB071 BB081 BB091 BG011 BG041 BG051 BH021 BP031 DA036 EJ007 EN007 EU107 EV007 EW007 FD037 GQ01 5G313 FA01 FB01 FB02 FC05 FD04 FD13 FD16 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takahisa Fukuda 2-3-1 Iwatacho, Higashiosaka-shi, Osaka Inside Tatsuta Electric Wire Co., Ltd. (72) Hisashi Kawabe Inventor 2-chome, Iwatacho, Higashiosaka-shi, Osaka No. 3-1 Fatsuta Electric Wire Co., Ltd. F term (reference) 4J002 BB041 BB071 BB081 BB091 BG011 BG041 BG051 BH021 BP031 DA036 EJ007 EN007 EU107 EV007 EW007 FD037 GQ01 5G313 FA01 FB01 FB13 FC05 FD04 FD04
Claims (2)
メタクリル酸系ユニットの総含有量が９９〜９０重量％
であり、無水マレイン酸ユニット含有量が１〜１０重量
％である、エチレン−アクリル酸系誘導体−無水マレイ
ン酸又はエチレン−メタクリル酸系誘導体−無水マレイ
ン酸３元共重合体 １００重量部に対し、 カーボンブラック ０．１〜２．０重量部、及び老化防
止剤 ０．１〜１．０重量部を配合してなる水密充填組
成物。A watertight filling composition for an insulated wire, wherein the total content of an ethylene unit and an acrylic acid derivative unit or a methacrylic acid unit is 99 to 90% by weight.
And a maleic anhydride unit content of 1 to 10% by weight, based on 100 parts by weight of an ethylene-acrylic acid derivative-maleic anhydride or ethylene-methacrylic acid derivative-maleic anhydride terpolymer 100 parts by weight A watertight filling composition comprising 0.1 to 2.0 parts by weight of carbon black and 0.1 to 1.0 part by weight of an antioxidant.
被覆した絶縁電線であって、 前記複数の導体素線間及び導体−絶縁被膜間に請求項１
に記載の水密充填組成物を充填してなることを特徴とす
る水密絶縁電線。2. An insulated wire in which a conductor composed of a plurality of conductor strands is covered with an insulation coating, wherein said conductor is between said plurality of conductor strands and between a conductor and an insulation coating.
A watertight insulated wire, characterized by being filled with the watertight filling composition described in 1 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000096624A JP2001283650A (en) | 2000-03-31 | 2000-03-31 | Water-tight filling composition and water-tight insulating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000096624A JP2001283650A (en) | 2000-03-31 | 2000-03-31 | Water-tight filling composition and water-tight insulating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001283650A true JP2001283650A (en) | 2001-10-12 |
Family
ID=18611362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000096624A Pending JP2001283650A (en) | 2000-03-31 | 2000-03-31 | Water-tight filling composition and water-tight insulating cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001283650A (en) |
-
2000
- 2000-03-31 JP JP2000096624A patent/JP2001283650A/en active Pending
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