JPS62128403A - Water tight polyvinyl chloride insulated wire - Google Patents
Water tight polyvinyl chloride insulated wireInfo
- Publication number
- JPS62128403A JPS62128403A JP60268155A JP26815585A JPS62128403A JP S62128403 A JPS62128403 A JP S62128403A JP 60268155 A JP60268155 A JP 60268155A JP 26815585 A JP26815585 A JP 26815585A JP S62128403 A JPS62128403 A JP S62128403A
- Authority
- JP
- Japan
- Prior art keywords
- watertight
- vinyl
- ethylene
- parts
- weight
- 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
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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、特に架空配電用電線として用いられるポリ塩
化ビニル絶縁電線（以下、ビニル絶縁電線と記す）に関
するもので、水分による腐食の問題を特殊な水密コンパ
ウンドを用いることによって解決したものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to polyvinyl chloride insulated wires (hereinafter referred to as vinyl insulated wires) used particularly as overhead power distribution wires, and is particularly concerned with the problem of corrosion caused by moisture. This was solved by using a special watertight compound.
〈従来の技術〉
従来、この種の架空配電用電線においては、導体への水
の侵入を防止して導体腐食を防止する目的で、水密コン
パウンドを充填する方法が取られている。<Prior Art> Conventionally, this type of overhead power distribution wire is filled with a watertight compound for the purpose of preventing water from entering the conductor and preventing corrosion of the conductor.
このような水密コンパウンドとしては、ゴムやプラスチ
ック系の所謂ドライタイプの水密コンパウンドが用いら
れている。具体的には、ＥＶＡ（エチレン−酢酸ビニル
共重合体）やＥＥＡ （エチレン−エチルアクリレート
共重合体）がよく用いられているが、これはこれらの樹
脂が導体及び絶縁体であるポリエチレンに対して良好な
接着性を有するという他に、種々のグレード品が揃って
いて使い易く、又加工し易いという点にある。As such a watertight compound, a so-called dry type watertight compound made of rubber or plastic is used. Specifically, EVA (ethylene-vinyl acetate copolymer) and EEA (ethylene-ethyl acrylate copolymer) are often used, but these resins are superior to polyethylene, which is a conductor and insulator. In addition to having good adhesive properties, it is easy to use and process as it is available in various grades.
〈発明が解決しようとする問題点〉
しか−しながら、本発明のように絶縁体がビニル樹脂の
絶縁電線においては、前述の利点がそのま＼利用できな
いのが現状である。<Problems to be Solved by the Invention> However, in the case of an insulated wire in which the insulator is made of vinyl resin as in the present invention, the above-mentioned advantages cannot currently be utilized as is.
そこで、本発明は、前述したようなＥＶＡＪ？３ＥＥＡ
系の水密コンパウンドをビニル絶縁電線の水密コンパウ
ンドとして利用することができるようにすることにあり
、特に、ビニル絶縁体との接着性の改良と、併せて接続
や端末処理における剥離性をも十分に有するようにする
ことにある。Therefore, the present invention is directed to the above-mentioned EVAJ? 3EEA
The objective is to make it possible to use the watertight compound of the system as a watertight compound for vinyl insulated wires, and in particular, to improve the adhesion with vinyl insulators, as well as to sufficiently improve the peelability during connection and terminal treatment. The goal is to make sure that you have it.
〈問題点を解決するための手段〉
本発明は、前述の問題点を解決するもので、水密コンパ
ウンドのベースポリマーとして塩化ビニル−エチレン共
重合体とＥＶＡ、ＥＥＡ或いはポリエステル系接着剤の
一種からなる組成物を用いることにある。<Means for Solving the Problems> The present invention solves the above-mentioned problems, and uses a vinyl chloride-ethylene copolymer as a base polymer for a watertight compound and a type of EVA, EEA, or polyester adhesive. The purpose is to use the composition.
即ち、第１番目の本発明は、塩化ビニル−エチレン共重
合体１００重量部に対してエチレン−酢酸ビニル共重合
体或いはエチレン−エチルアクリレート共重合体を１０
〜１００重量部添加した水密コンパウンドが撚線導体の
少なくとも最外層に設けられ、更にポリ塩化ビニル絶縁
層を有する水密ビニル絶縁電線にある。That is, in the first aspect of the present invention, 10 parts by weight of ethylene-vinyl acetate copolymer or ethylene-ethyl acrylate copolymer is added to 100 parts by weight of vinyl chloride-ethylene copolymer.
~100 parts by weight of a watertight compound is applied to at least the outermost layer of the stranded conductor, and the watertight vinyl insulated wire further has a polyvinyl chloride insulation layer.
第２番目の本発明は、塩化ビニル−エチレン共重合体１
００重量部に対してポリエステル系接着剤を１０〜１０
０重量部添加した水密コンパウンドが撚線導体の少なく
とも最外層に設けられ、更にポリ塩化ビニル絶縁層を有
する水密ビニル絶縁電線にある。The second invention is a vinyl chloride-ethylene copolymer 1
10 to 10 parts of polyester adhesive per 00 parts by weight
A watertight vinyl insulated wire having 0 parts by weight of a watertight compound added to at least the outermost layer of the stranded conductor and further having a polyvinyl chloride insulation layer.
そして、好ましくは、上記ＥＶＡのＶＡｉｌ （酢酸ビ
ニル含有量）及びＥＥＡのＥＡｉ（エチルアクリレート
含有量）を１５〜５０％とするすることであり、塩化ビ
ニル−エチレン共重合体の平均重合度（ｉ）を４００〜
１３００とすることである。Preferably, the VAil (vinyl acetate content) of EVA and the EAi (ethyl acrylate content) of EEA are 15 to 50%, and the average degree of polymerization (i ) from 400
1300.
又、この水密コンパウンドは撚線導体の間隙及び導体外
周面すべてに十分に充填することが好ましいが、少なく
とも導体表面を覆うことよって目的は達せられる。Although it is preferable that the watertight compound is sufficiently filled in all the gaps in the stranded conductor and the outer peripheral surface of the conductor, the purpose can be achieved by covering at least the surface of the conductor.
又、塩化ビニル−エチレン共重合体の平均重合度（β）
を４００〜１３００とするのは、４００未満であると夏
期等の高温時に水密コンパウンドが軟化流動してしまう
こと、剥離性が低下することが考えられるためであり、
又１３００を越えると逆に流動性に乏しくなり撚線導体
への充填が困難になると考えられるためである。Also, the average degree of polymerization (β) of vinyl chloride-ethylene copolymer
The reason why is set to 400 to 1300 is that if it is less than 400, the watertight compound may soften and flow at high temperatures such as in summer, and the releasability may decrease.
Moreover, if it exceeds 1300, it is thought that the fluidity becomes poor and it becomes difficult to fill the twisted wire conductor.
更に、ＥＶＡ、ＥＥＡのＶＡＩ、ＥＡ量については、Ｖ
Ａ量、ＥＡＭが１５％未満だと導体との接着力が若干弱
くなり、又５０％を越えると高温（６０℃程度）での剥
離性が悪（なり作業上問題があると考えられるからであ
る。Furthermore, regarding the VAI and EA amounts of EVA and EEA, V
If the amount of A or EAM is less than 15%, the adhesive strength with the conductor will be slightly weak, and if it exceeds 50%, the peelability at high temperatures (about 60°C) will be poor (this may cause problems in work). be.
そして、塩化ビニル−エチレン共重合体とＥＶＡ、ＥＥ
Ａ及びポリエステル系接着剤の組成割合を前述するよう
に定めたのは、ＥＶＡ、ＥＥＡ量が塩化ビニル−エチレ
ン共重合体１００重量部に対して１０重量部未満である
と導体との接着力が不十分となり、又１００重量部を越
えると導体との接着力が強くなり、剥離性が悪くなるた
めである。Then, vinyl chloride-ethylene copolymer and EVA, EE
The composition ratios of A and the polyester adhesive were determined as described above because if the amount of EVA and EEA is less than 10 parts by weight based on 100 parts by weight of the vinyl chloride-ethylene copolymer, the adhesive strength with the conductor will decrease. This is because if it is insufficient, and if it exceeds 100 parts by weight, the adhesive force with the conductor becomes strong and the releasability becomes poor.
又、ポリエステル系接着剤量を塩化ビニル−エチレン共
重合体１００重量部に対して１０〜１００重量部とした
のは、１０重量部未満であると水密コンパウンドの導体
との接着力が目的とする接着力とならず、水密性が得ら
れなくなり、又１００重量部を越えると接着力が大きく
なり過ぎて、接続や口出し作業の際の剥離性が悪くなる
ためである。尚、水密コンパウンドのメルトインデック
スＭｌについても作業性の点から１５〜３００（ｇ ／
１０分）であることが望ましい。Also, the reason why the amount of polyester adhesive is set to 10 to 100 parts by weight per 100 parts by weight of vinyl chloride-ethylene copolymer is that if it is less than 10 parts by weight, the adhesive strength of the watertight compound with the conductor is improved. This is because there is no adhesive force and watertightness cannot be obtained, and if it exceeds 100 parts by weight, the adhesive force becomes too large and peelability during connection and opening operations becomes poor. In addition, the melt index Ml of the watertight compound is 15 to 300 (g /
10 minutes) is desirable.
以上のような組成の水密コンパウンドを用いることによ
って、十分な水密性と剥離性を兼ね備えた水密ビニル絶
縁電線が得られる。By using a watertight compound having the composition as described above, a watertight vinyl insulated electric wire having both sufficient watertightness and peelability can be obtained.
〈実施例〉
第１表に示す水密コンパウンドを６０ｍｍ”ｉ体（１９
本撚り）に充填し、ビニル絶縁層を被覆を施して水密ビ
ニル絶縁電線を製造し、この電線について、水密試験、
剥離試験、水密コンパウンド滴下試験及び通電耐腐食試
験を行った。その結果を第２表に示す。<Example> The watertight compound shown in Table 1 was applied to a 60mm” body (19
A watertight vinyl insulated wire is manufactured by filling the wire with a vinyl insulating layer and carrying out a watertight test.
A peel test, a watertight compound drip test, and an electrical corrosion resistance test were conducted. The results are shown in Table 2.
尚、各試験は下記の方法で行った。In addition, each test was conducted by the following method.
水密試験：長さ２ｍの電線の片端に１気圧の水圧を２４
時間加え、他端からの水漏
れの有無を調べた。Watertight test: 1 atm water pressure is applied to one end of a 2m long electric wire for 24 hours.
After adding time, I checked for water leakage from the other end.
剥離試験：電線皮剥ぎ器を用いて、絶縁体の皮剥ぎを行
ない、そのときの導体上の
水密コンパウンド残留の有無を室温
と６０℃の場合について調べた。Peeling test: The insulator was stripped using a wire stripper, and the presence or absence of watertight compound remaining on the conductor was examined at room temperature and at 60°C.
水密コンパウンド滴下試験：長さ１２ｃｍの電線から導
体を３ｃｍ露出させ、恒温
槽中に垂直に吊し、８０℃、２４時
間での水密コンパウンドの滴下の有
無を調べた。Watertight compound dripping test: A conductor was exposed for 3 cm from a 12 cm long electric wire, hung vertically in a constant temperature bath, and the presence or absence of watertight compound dripping was examined at 80° C. for 24 hours.
通電耐腐食試験：電線の片端からマトソン氏液（塩化ア
ンモニウム、塩化鋼を含む
溶液で銅の腐食を促進させる液）を
注入し、導体温度が６０°Ｃとなるよ
う１０時間通電、１６時間常温での
ヒートサイクルを６０回繰り返した
後の導体の変色を調べた。Current corrosion resistance test: Inject Matson's solution (a solution containing ammonium chloride and steel chloride that accelerates corrosion of copper) from one end of the wire, conduct electricity for 10 hours so that the conductor temperature is 60°C, and leave it at room temperature for 16 hours. The discoloration of the conductor was examined after the heat cycle was repeated 60 times.
〈発明の効果〉
以上の結果から明らかなように、本発明の水密ビニル絶
縁電線は、水密性、剥離性、滴下試験、腐食試験のいず
れにおいても、十分な特性を有していることが判る。<Effects of the Invention> As is clear from the above results, it is clear that the watertight vinyl insulated electric wire of the present invention has sufficient characteristics in all of the watertightness, peelability, drip test, and corrosion test. .
よって、本発明によれば、ポリ塩化ビニル絶縁電線を用
いた水密架空配電用電線として極めて優れた水密ビニル
絶縁電線を提供することができる。Therefore, according to the present invention, it is possible to provide a watertight vinyl insulated wire that is extremely excellent as a watertight overhead power distribution wire using a polyvinyl chloride insulated wire.
Claims (5)
してエチレン−酢酸ビニル共重合体或いはエチレン−エ
チルアクリレート共重合体を１０〜１００重量部添加し
た水密コンパウンドが撚線導体の少なくとも最外層に設
けられ、更にポリ塩化ビニル絶縁層を有する水密ビニル
絶縁電線。(1) A watertight compound prepared by adding 10 to 100 parts by weight of ethylene-vinyl acetate copolymer or ethylene-ethyl acrylate copolymer to 100 parts by weight of vinyl chloride-ethylene copolymer is applied to at least the outermost layer of the stranded wire conductor. A watertight vinyl insulated electrical wire provided with a polyvinyl chloride insulation layer.
してポリエステル系接着剤を１０〜１００重量部添加し
た水密コンパウンドが撚線導体の少なくとも最外層に設
けられ、更にポリ塩化ビニル絶縁層を有する水密ビニル
絶縁電線。(2) A watertight compound prepared by adding 10 to 100 parts by weight of a polyester adhesive to 100 parts by weight of vinyl chloride-ethylene copolymer is provided on at least the outermost layer of the stranded conductor, and further has a polyvinyl chloride insulating layer. Watertight vinyl insulated wire.
（＠ρ＠）が４００〜１３００である特許請求の範囲第
１項又は第２項記載の水密ビニル絶縁電線。(3) The watertight vinyl insulated electric wire according to claim 1 or 2, wherein the vinyl chloride-ethylene copolymer has an average degree of polymerization (@ρ@) of 400 to 1300.
含有量が１５〜５０％である特許請求の範囲第１項又は
第３項記載の水密ビニル絶縁電線。(4) The watertight vinyl insulated wire according to claim 1 or 3, wherein the vinyl acetate content of the ethylene-vinyl acetate copolymer is 15 to 50%.
チルアクリレート含有量が１５〜５０％である特許請求
の範囲第１項又は第３項記載の水密ビニル絶縁電線。(5) The watertight vinyl insulated wire according to claim 1 or 3, wherein the ethylene-ethyl acrylate copolymer has an ethyl acrylate content of 15 to 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60268155A JPS62128403A (en) | 1985-11-28 | 1985-11-28 | Water tight polyvinyl chloride insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60268155A JPS62128403A (en) | 1985-11-28 | 1985-11-28 | Water tight polyvinyl chloride insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62128403A true JPS62128403A (en) | 1987-06-10 |
| JPH0453044B2 JPH0453044B2 (en) | 1992-08-25 |
Family
ID=17454660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60268155A Granted JPS62128403A (en) | 1985-11-28 | 1985-11-28 | Water tight polyvinyl chloride insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62128403A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64607A (en) * | 1987-06-23 | 1989-01-05 | Fujikura Ltd | Watertight pvc-insulated electric wire and cable |
| JPS6452306A (en) * | 1987-08-21 | 1989-02-28 | Yazaki Corp | Power cable |
-
1985
- 1985-11-28 JP JP60268155A patent/JPS62128403A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64607A (en) * | 1987-06-23 | 1989-01-05 | Fujikura Ltd | Watertight pvc-insulated electric wire and cable |
| JPS6452306A (en) * | 1987-08-21 | 1989-02-28 | Yazaki Corp | Power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0453044B2 (en) | 1992-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |