JP2657507B2 - Watertight conductor - Google Patents
Watertight conductorInfo
- Publication number
- JP2657507B2 JP2657507B2 JP63019073A JP1907388A JP2657507B2 JP 2657507 B2 JP2657507 B2 JP 2657507B2 JP 63019073 A JP63019073 A JP 63019073A JP 1907388 A JP1907388 A JP 1907388A JP 2657507 B2 JP2657507 B2 JP 2657507B2
- Authority
- JP
- Japan
- Prior art keywords
- watertight
- plasticizer
- vinyl chloride
- conductor
- compound
- 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
Links
- 239000004020 conductor Substances 0.000 title claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 24
- 239000004014 plasticizer Substances 0.000 claims description 16
- 229920001897 terpolymer Polymers 0.000 claims description 10
- OAWKUMDOADACKG-UHFFFAOYSA-N chloroethene;ethenyl acetate;prop-2-enoic acid Chemical compound ClC=C.OC(=O)C=C.CC(=O)OC=C OAWKUMDOADACKG-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000011247 coating layer Substances 0.000 description 12
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940126214 compound 3 Drugs 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Classifications
-
- 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)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、導体素線間および外周に水密コンパウンド
を被覆充填した水密導体に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a watertight conductor in which a watertight compound is coated and filled between conductor strands and the outer periphery.
（従来の技術） 架空配電線や海底電線では、長期間の使用中に素線の
酸化、腐蝕により異常断線事故が生じることがある。(Conventional technology) In the case of overhead distribution lines and submarine cables, abnormal disconnection accidents may occur due to oxidation and corrosion of the wires during long-term use.
その主な原因は、電線のシースや端部等から雨水等の
水分が侵入することによるものと考えられている。この
ため水分等の侵入を防止する目的で、電線全長にわたっ
て導体素線間および外周に水密コンパウンドを被覆充填
することが行われている。水密コンパウンドとしては、
水密効果、導体や絶縁被覆層との密着性、押出加工性、
接続時の剥離性等を考慮して各種検討されてきている
が、一般に、ポリオレフィン、エチレン−酢酸ビニル共
重合体、エチレン−エチルアクリレート共重合体等のオ
レフィン系ポリマーをベースとしたものが使用されてい
る。It is considered that the main cause is that moisture such as rainwater invades from the sheath or the end of the electric wire. For this reason, for the purpose of preventing invasion of moisture and the like, a watertight compound is coated and filled between conductor strands and the outer periphery over the entire length of the electric wire. As a watertight compound,
Watertight effect, adhesion with conductor and insulating coating layer, extrusion processability,
Various studies have been made in consideration of the releasability at the time of connection and the like.Generally, those based on olefin polymers such as polyolefin, ethylene-vinyl acetate copolymer, and ethylene-ethyl acrylate copolymer are used. ing.
（発明が解決しようとする課題） しかしながらこのようなオレフィン系の水密コンパウ
ンドを用いたものでは、絶縁被覆層が塩化ビニル樹脂組
成物からなる場合、両組成物の誘導率εが大きく異なる
ために耐電圧特性を低下させるという難点があった。ま
た塩化ビニル樹脂組成物中に配合されている可塑剤が移
行しやすくなるという難点もあった。(Problems to be Solved by the Invention) However, in the case where such an olefin-based watertight compound is used, when the insulating coating layer is made of a vinyl chloride resin composition, the dielectric constant ε of the two compositions is greatly different, so that the resistance is high. There was a problem that the voltage characteristics were deteriorated. There is also a problem that the plasticizer contained in the vinyl chloride resin composition is easily transferred.
本発明は、このような従来の難点を解消するためにな
されたもので、従来の水密導体に匹敵する優れた水密特
性を有し、かつ塩化ビニル樹脂絶縁被覆層の特性を低下
させることがない水密導体を提供することを目的とす
る。The present invention has been made in order to solve such conventional difficulties, has excellent watertightness comparable to conventional watertight conductors, and does not lower the characteristics of the vinyl chloride resin insulating coating layer. It is intended to provide a watertight conductor.
［発明の構成］ （課題を解決するための手段） 本発明は水密導体は、複数本の素線を撚り合せ、各素
線間およびその外周を水密コンパウンドで被覆充填して
なる水密導体において、塩化ビニル−酢酸ビニル−アク
リル酸三元共重合体に可塑剤を高濃度に配合した水密コ
ンパウンドで各素線間を充填し、塩化ビニル−酢酸ビニ
ル−アクリル酸三元共重合体に可塑剤を低濃度に配合し
た水密コンパウンドで外周を被覆したことを特徴として
いる。[Constitution of the Invention] (Means for Solving the Problems) The present invention relates to a watertight conductor formed by twisting a plurality of strands, and covering and filling between each strand and the outer periphery thereof with a watertight compound. Fill the space between the strands with a watertight compound in which a plasticizer is blended with a high concentration of a vinyl chloride-vinyl acetate-acrylic acid terpolymer, and apply a plasticizer to the vinyl chloride-vinyl acetate-acrylic acid terpolymer. It is characterized in that the outer periphery is covered with a watertight compound mixed at a low concentration.
本発明に使用される塩化ビニル−酢酸ビニル−アクリ
ル酸三元共重合体は、次の一般式で示され、酢酸ビニル
およびアクリル酸の含有率がそれぞれ１〜15％および１
〜７％のものが、本発明においては適している。The vinyl chloride-vinyl acetate-acrylic acid terpolymer used in the present invention is represented by the following general formula, wherein the contents of vinyl acetate and acrylic acid are 1 to 15% and 1 respectively.
~ 7% is suitable in the present invention.
また本発明に使用される可塑剤としては、ジイソノニ
ルフタレート（DINP）と、エポキシ化大豆油等のエポキ
シ化植物油の併用が本発明においては適している。 As the plasticizer used in the present invention, a combination of diisononyl phthalate (DINP) and an epoxidized vegetable oil such as epoxidized soybean oil is suitable in the present invention.
本発明においては、塩化ビニル−酢酸ビニル−アクリ
ル酸三元共重合体100重量部あたり可塑剤68〜100重量部
配合した水密コンパウンドで各素線間を充填し、塩化ビ
ニル−酢酸ビニル−アクリル酸三元共重合体100重量部
あたり可塑剤10〜65重量部配合した水密コンパウンドで
外周を被覆することが望ましい。これは素線および絶縁
被覆層との密着性、押出加工性、接続時の剥離性を考慮
したためである。すなわち各素線間に充填する水密コン
パウンドにおいて、可塑剤の配合量が68重量部未満では
素線との密着性に乏しくなり、逆に100重量部を越える
と押出加工性や接続時の剥離性が不良となる。また外周
を被覆する水密コンパウンドにおいて、可塑剤の配合量
が10重量部未満では、絶縁被覆層との密着性や押出加工
性が不良となり、逆に65重量部を越えると接続時の剥離
がが困難となる。In the present invention, vinyl chloride-vinyl acetate-acrylic acid is filled between each strand with a watertight compound containing 68 to 100 parts by weight of a plasticizer per 100 parts by weight of vinyl chloride-vinyl acetate-acrylic acid terpolymer. It is desirable to coat the outer periphery with a watertight compound containing 10 to 65 parts by weight of a plasticizer per 100 parts by weight of the terpolymer. This is because the adhesion between the strand and the insulating coating layer, the extrudability, and the releasability at the time of connection are considered. That is, in the watertight compound filled between the strands, if the blending amount of the plasticizer is less than 68 parts by weight, the adhesion to the strands is poor, and if it exceeds 100 parts by weight, the extrudability and the peelability at the time of connection are increased. Becomes defective. Also, in the watertight compound covering the outer periphery, if the amount of the plasticizer is less than 10 parts by weight, the adhesion to the insulating coating layer and the extrudability become poor, and if it exceeds 65 parts by weight, peeling during connection may occur. It will be difficult.
なお本発明の水密コンパウンドには、上記成分の外
に、本発明の効果を損なわない範囲で、安定剤、滑剤そ
の他の添加剤を配合することができる。The watertight compound of the present invention may contain, in addition to the above components, stabilizers, lubricants and other additives as long as the effects of the present invention are not impaired.
（作用） 本発明の水密導体では、塩化ビニル−酢酸ビニル−ア
クリル酸三元共重合体をベースに、各素線間には可塑剤
を高濃度に配合した、素線との密着性が良く充填が容易
で接続時の剥離も容易な水密コンパウンドが、外周には
可塑剤を低濃度に配合した、絶縁被覆層との密着性に優
れ、押出性や接続時の剥離も問題のない水密コンパウン
ドが、それぞれ充填ないし被覆されているので、優れた
水密特性を有するとともに、絶縁被覆層が塩化ビニル樹
脂組成物からなる場合であっても、その耐電圧特性を低
下させたり、絶縁被覆層中の可塑剤の移行を促進させる
ようなことがない。(Function) In the watertight conductor of the present invention, a high concentration of a plasticizer is blended between the strands based on a vinyl chloride-vinyl acetate-acrylic acid terpolymer to provide good adhesion to the strands. A watertight compound that is easy to fill and easy to peel off at the time of connection, has a low concentration of a plasticizer on the outer periphery, has excellent adhesion to the insulating coating layer, and has no problem with extrudability and peeling at the time of connection. However, since each is filled or coated, it has excellent watertightness properties, and even when the insulating coating layer is made of a vinyl chloride resin composition, it lowers the withstand voltage characteristics or reduces the voltage in the insulating coating layer. It does not promote the transfer of the plasticizer.
（実施例） 以下、本発明の実施例を図面を用いて説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
図面に示すように、外径2mmφの銅素線１を、19本撚
合わせつつ、各素線間に次表に示す配合の充填用水密コ
ンパウンド２を充填した。次いでこれらの外周に次表に
示す配合の被覆用水密コンパウンド３を0.1mm前後の厚
さに被覆して60mm2の水密導体を製造した。As shown in the drawing, a filling watertight compound 2 having the composition shown in the following table was filled between each strand while twisting 19 copper strands 1 having an outer diameter of 2 mmφ. Then produce a watertight conductor of 60 mm 2 was coated a coating watertight compound 3 of the formulations shown in the following table these outer periphery a thickness of about 0.1 mm.
この後その外周に、軟質塩化ビニル樹脂［Ｖ−15A
（昭和電線電纜社製 商品名）を使用］からなる絶縁被
覆層４を押出被覆して水密ケーブルを製造した。Thereafter, a soft vinyl chloride resin [V-15A]
(Using Showa Electric Wire & Cable Co., Ltd.) to form a watertight cable.
得られたケーブルについて、水密性、水密コンパウン
ドの剥離性および可塑剤の移行の有無を調べるととも
に、上記ケーブルの製造に用いた充填用および被覆用水
密コンパウンドを用いてシートを作成し、これらの各シ
ートについて、銅板および上記絶縁被覆層の形成に使用
したものと同じ材料からなる絶縁シートに対する密着
力、抗張力特性および加熱減量を、中部電力規格試験法
に基づき測定した。About the obtained cable, while examining the watertightness, the peelability of the watertight compound and the presence or absence of migration of the plasticizer, a sheet was prepared using the filling and covering watertight compound used in the production of the cable, and each of these was prepared. With respect to the sheet, the adhesion, the tensile strength, and the heat loss to an insulating sheet made of the same material as that used for forming the copper plate and the insulating coating layer were measured based on the Chubu Electric Power Standard Test Method.
以上の測定結果を、水密コンパウンドの組成およびメ
ルトインデックス（M.I.）とともに次表にまとめて示
す。The above measurement results are shown in the following table together with the composition of the watertight compound and the melt index (MI).
なお表中の比較例１は、充填用水密コンパウンドの可
塑剤の配合量を過少にした例、比較例２は、被覆用水密
コンパウンドの可塑剤の配合量を過剰にした例で、本発
明との比較のために示したものである。In addition, Comparative Example 1 in the table is an example in which the amount of the plasticizer in the filling watertight compound was too small, and Comparative Example 2 is an example in which the amount of the plasticizer in the watertight compound for coating was excessive, and the present invention and Are shown for comparison.
［発明の効果］ 以上説明したように本発明の水密導体は、各線間を、
塩化ビニル−酢酸ビニル−アクリル酸三元重合体をベー
スとした導体素線との密着性が良く充填が容易で接続時
の剥離も容易な組成とした、いわゆる充填用水密コンパ
ウンドで充填し、これらの外周を、同じく塩化ビニル−
酢酸ビニル−アクリル酸三元共重合体をベースとし絶縁
被覆層との密着性が良く押出性や接続時の剥離も問題の
ない組成とした、いわゆる被覆用水密コンパウンドで被
覆した構造とされているので、優れた水密特性を有する
とともに、塩化ビニル樹脂からなる絶縁被覆層の特性を
損なうこともない。 [Effects of the Invention] As described above, the watertight conductor of the present invention
Filled with a so-called water-tight compound for filling, which has a composition that has good adhesion to conductor wires based on vinyl chloride-vinyl acetate-acrylic acid terpolymer, easy to fill, and easy to peel off at the time of connection. Around the circumference of vinyl chloride
The composition is based on vinyl acetate-acrylic acid terpolymer and has a composition with good adhesion to the insulating coating layer and good extrudability and no peeling during connection. Therefore, it has excellent watertight properties and does not impair the properties of the insulating coating layer made of vinyl chloride resin.
図面は本発明の一実施例を示す横断面図である。 １……銅素線 ２……充填用の水密コンパウンド ３……被覆用の水密コンパウンド ４……絶縁被覆層 The drawings are cross-sectional views showing one embodiment of the present invention. 1 Copper wire 2 Watertight compound for filling 3 Watertight compound for coating 4 Insulating coating layer
フロントページの続き (72)発明者 矢地 竹男 神奈川県川崎市川崎区小田栄２丁目１番 １号 昭和電線電纜株式会社内 (56)参考文献 特開 昭59−60819（ＪＰ，Ａ) 特開 昭59−25108（ＪＰ，Ａ) 特開 昭59−68111（ＪＰ，Ａ) 特開 昭62−256307（ＪＰ，Ａ) 特開 平１−195612（ＪＰ，Ａ) 特開 昭63−245815（ＪＰ，Ａ) 実開 昭63−2322（ＪＰ，Ｕ) 実開 昭55−120029（ＪＰ，Ｕ) 実開 昭63−182408（ＪＰ，Ｕ) 特公 昭46−33796（ＪＰ，Ｂ１)Continuation of the front page (72) Inventor Takeo Yachi 2-1-1, Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (56) References JP-A-59-60819 (JP, A) JP-A-59-25108 (JP, A) JP-A-59-68111 (JP, A) JP-A-62-256307 (JP, A) JP-A-1-195612 (JP, A) JP-A-63-245815 (JP, A) , A) Japanese Utility Model Showa 63-2322 (JP, U) Japanese Utility Model Showa 55-120029 (JP, U) Japanese Utility Model Showa 63-182408 (JP, U) Japanese Patent Publication 46-33796 (JP, B1)
Claims (1)
その外周を水密コンパウンドで被覆充填してなる水密導
体において、塩化ビニル−酢酸ビニル−アクリル酸三元
共重合体に可塑剤を高濃度に配合した水密コンパウンド
で各素線間を充填し、塩化ビニル−酢酸ビニル−アクリ
ル酸三元共重合体に可塑剤を低濃度に配合した水密コン
パウンドで外周を被覆したことを特徴とする水密導体。1. A watertight conductor obtained by twisting a plurality of strands and covering and filling between the strands and the outer periphery thereof with a watertight compound, wherein a plasticizer is added to a vinyl chloride-vinyl acetate-acrylic acid terpolymer. Is filled with a water-tight compound containing a high concentration of water, and the outer periphery is covered with a water-tight compound containing a plasticizer at a low concentration in a vinyl chloride-vinyl acetate-acrylic acid terpolymer. Watertight conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019073A JP2657507B2 (en) | 1988-01-29 | 1988-01-29 | Watertight conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63019073A JP2657507B2 (en) | 1988-01-29 | 1988-01-29 | Watertight conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01195613A JPH01195613A (en) | 1989-08-07 |
| JP2657507B2 true JP2657507B2 (en) | 1997-09-24 |
Family
ID=11989260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63019073A Expired - Lifetime JP2657507B2 (en) | 1988-01-29 | 1988-01-29 | Watertight conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2657507B2 (en) |
-
1988
- 1988-01-29 JP JP63019073A patent/JP2657507B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01195613A (en) | 1989-08-07 |
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