JPH0850807A - Insulating rubber material with high dielectric constant - Google Patents
Insulating rubber material with high dielectric constantInfo
- Publication number
- JPH0850807A JPH0850807A JP20816394A JP20816394A JPH0850807A JP H0850807 A JPH0850807 A JP H0850807A JP 20816394 A JP20816394 A JP 20816394A JP 20816394 A JP20816394 A JP 20816394A JP H0850807 A JPH0850807 A JP H0850807A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- insulating rubber
- dielectric constant
- conductive powder
- rubber
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電力ケーブルの中間接続
部や端末接続部等を形成するゴムストレスコーンに用い
られる高誘電率絶縁ゴム材料に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high dielectric constant insulating rubber material used for a rubber stress cone forming an intermediate connecting portion, a terminal connecting portion or the like of a power cable.
【０００２】[0002]
【従来の技術及び解決しようとする課題】従来のゴムス
トレスコーンは、例えば実公平2-8507号公報に示される
ように、シリコン、ＥＰＤＭ、ネオプレンゴム等から成
る絶縁ゴム部材と、挿入されたケーブルのケーブル遮蔽
層との間に弾性を有する高誘電率絶縁ゴムから成る円筒
状部材により構成されており、上記高誘電率絶縁ゴムは
例えばアルミフレークやチタン酸バリウムを分散させた
シリコン、ＥＰＤＭ、ネオプレンゴムが用いられる。2. Description of the Related Art A conventional rubber stress cone is, for example, as disclosed in Japanese Utility Model Publication No. 2-8507, an insulating rubber member made of silicon, EPDM, neoprene rubber or the like and an inserted cable. Is formed of a cylindrical member made of a high-dielectric-constant insulating rubber having elasticity between the cable-shielding layer and the high-dielectric-constant insulating rubber. Rubber is used.
【０００３】本発明は上述した従来の高誘電率絶縁ゴム
よりより一層高い誘電率及び絶縁性能を有する高誘電率
絶縁ゴムを得んとするものである。The present invention aims to obtain a high dielectric constant insulating rubber having a higher dielectric constant and insulating performance than the conventional high dielectric constant insulating rubber described above.
【０００４】[0004]
【課題を解決するための手段】本発明は上述の課題を解
決した高誘電率絶縁ゴム材料を提供するもので、その特
徴は、エチレンプロピレンゴムを主体とする組成物中に
導電性粉末を30重量％以上、70重量％以下添加したもの
であり、上記導電性粉末としては、酸化亜鉛にアルミニ
ウムイオンをドーパントしたもの、酸化亜鉛にガリウム
イオンをドーパントしたもの、あるいは無機微粉末にア
ンチモンイオンをドーピングした酸化スズをコーティン
グしたものが用いられる。The present invention provides a high-dielectric-constant insulating rubber material which solves the above-mentioned problems, and is characterized in that a conductive powder is contained in a composition mainly composed of ethylene propylene rubber. The conductive powder is added in an amount of 70% by weight or more and 70% by weight or less. The one coated with tin oxide is used.
【０００５】[0005]
【作用】上述のような導電性粉末を添加する組成物とし
てエチレンプロピレンゴムを主体とする組成物を用いる
のは、本発明の高誘電率絶縁ゴムと組合せる絶縁ゴム部
材としてエチレンプロピレンゴムを主体とする組成物が
用いられるので、両者の接着性を十分なものとするため
に同一のゴム組成物を用いるのがよい。The composition containing ethylene propylene rubber as the composition containing the conductive powder as described above is mainly used as the insulating rubber member combined with the high dielectric constant insulating rubber of the present invention. Therefore, it is preferable to use the same rubber composition in order to ensure sufficient adhesiveness between the two.
【０００６】又上述した導電性粉末の添加量を30重量％
以上、70重量％以下とするのは、30重量％未満では目標
とする高誘電率（30〜100 ）が得られず、70重量％を超
えると絶縁抵抗が 108Ω・cm以下に低下し、実用上問題
となるからである。なお、他の配合剤としてプロセスオ
イル、老化防止剤、加工助剤、無機充填剤、加硫剤等を
適宜配合してもよい。The amount of the conductive powder added is 30% by weight.
Above 70% by weight, the target high dielectric constant (30 to 100) cannot be obtained below 30% by weight, and the insulation resistance drops below 10 8 Ω ・ cm below 70% by weight. , Because it will be a problem in practical use. As other compounding agents, process oil, anti-aging agent, processing aid, inorganic filler, vulcanizing agent and the like may be appropriately compounded.
【０００７】[0007]
【実施例】表１に示す充填剤をエチレンプロピレンゴム
に混合、加硫して１mm厚さのシートを作成し、誘電率及
び絶縁抵抗の評価を行った。誘電率は30〜100 、絶縁抵
抗は 108以上を良好とした。用いた材料は次の通り。 エチレンプロピンゴム：住友化学工業（株）エスプレン
301 導電性粉末（１）：三井金属鉱業（株）パストランTYPE
−II（酸化亜鉛にガリウムイオンをドーピング、平均粒
径２μｍ） 導電性粉末（２）：三井金属鉱業（株）パストランTYPE
−IV（硫酸バリウム粒子にアンチモンイオンをドーピン
グした酸化スズをコーティング、平均粒径 0.2μｍ） 他の配合剤としてプロセスオイル、加工助剤、加硫剤を
添加した。EXAMPLES The fillers shown in Table 1 were mixed with ethylene propylene rubber and vulcanized to prepare a 1 mm thick sheet, and the dielectric constant and insulation resistance were evaluated. The dielectric constant was 30 to 100, and the insulation resistance was 10 8 or more. The materials used are as follows. Ethylene propyne rubber: Sumitomo Chemical Co., Ltd. Esplen
301 Conductive powder (1): Mitsui Mining & Smelting Co., Ltd. Pastran TYPE
-II (Zinc oxide doped with gallium ions, average particle size 2 μm) Conductive powder (2): Mitsui Mining & Smelting Co., Ltd. Pastran TYPE
-IV (tin oxide coated with antimony ions on barium sulfate particles, average particle size 0.2 μm) Process oil, processing aid, and vulcanizing agent were added as other compounding agents.
【０００８】[0008]
【表１】 [Table 1]
【０００９】[0009]
【発明の効果】以上説明したように、本発明によれば、
従来の高誘電率絶縁ゴムより、より高い誘電率及び絶縁
性能を有する高誘電率絶縁ゴム材料が得られる。従っ
て、高電圧で使用される電力ケーブルの中間接続部や端
末接続部に使用されるゴムストレスコーンに利用すると
効果的である。As described above, according to the present invention,
A high-dielectric-constant insulating rubber material having a higher dielectric constant and insulating performance can be obtained than the conventional high-dielectric-constant insulating rubber. Therefore, it is effective to use it for the rubber stress cone used for the intermediate connection part and the terminal connection part of the power cable used at high voltage.
Claims (3)
成物中に、酸化亜鉛にアルミニウムイオンをドーパント
した導電性粉末を30重量％以上、70重量％以下添加した
ことを特徴とする高誘電率絶縁ゴム材料。1. A high-dielectric-constant insulating rubber, characterized in that 30% by weight or more and 70% by weight or less of conductive powder obtained by doping aluminum oxide into zinc oxide is added to a composition mainly composed of ethylene propylene rubber. material.
成物中に、酸化亜鉛にガリウムイオンをドーパントした
導電性粉末を30重量％以上、70重量％以下添加したこと
を特徴とする高誘電率絶縁ゴム材料。2. A high-dielectric-constant insulating rubber, characterized in that 30% by weight or more and 70% by weight or less of a conductive powder prepared by doping gallium ions into zinc oxide is added to a composition mainly composed of ethylene propylene rubber. material.
成物中に、無機微粉末にアンチモンイオンをドーピング
した酸化スズをコーティングした導電性粉末を30重量％
以上、70重量％以下添加したことを特徴とする高誘電率
絶縁ゴム材料。3. A conductive powder comprising an inorganic propylene rubber-based composition coated with tin oxide, which is an inorganic fine powder doped with antimony ions, in an amount of 30% by weight.
Above, 70% by weight or less is added, a high dielectric constant insulating rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20816394A JPH0850807A (en) | 1994-08-08 | 1994-08-08 | Insulating rubber material with high dielectric constant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20816394A JPH0850807A (en) | 1994-08-08 | 1994-08-08 | Insulating rubber material with high dielectric constant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0850807A true JPH0850807A (en) | 1996-02-20 |
Family
ID=16551703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20816394A Pending JPH0850807A (en) | 1994-08-08 | 1994-08-08 | Insulating rubber material with high dielectric constant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0850807A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6787703B2 (en) | 2001-11-27 | 2004-09-07 | Fujikura Ltd. | Connection structure and connection member for electrical connection of power cables |
| JP2005328610A (en) * | 2004-05-13 | 2005-11-24 | Showa Electric Wire & Cable Co Ltd | Cable termination |
| US6979707B2 (en) | 2003-03-17 | 2005-12-27 | Fujikura Ltd. | High-permittivity rubber compounds and power cable members |
| JP2010502772A (en) * | 2006-09-04 | 2010-01-28 | ライプニッツ−インスティトゥート フィア ノイエ マテリアーリエン ゲマインニュッツィヒ ゲゼルシャフト ミット ベシュレンクタ ハフトゥング | Composition for coating electrical conductors and method for preparing such a composition |
-
1994
- 1994-08-08 JP JP20816394A patent/JPH0850807A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6787703B2 (en) | 2001-11-27 | 2004-09-07 | Fujikura Ltd. | Connection structure and connection member for electrical connection of power cables |
| US6979707B2 (en) | 2003-03-17 | 2005-12-27 | Fujikura Ltd. | High-permittivity rubber compounds and power cable members |
| JP2005328610A (en) * | 2004-05-13 | 2005-11-24 | Showa Electric Wire & Cable Co Ltd | Cable termination |
| JP4495514B2 (en) * | 2004-05-13 | 2010-07-07 | 昭和電線ケーブルシステム株式会社 | Cable termination |
| JP2010502772A (en) * | 2006-09-04 | 2010-01-28 | ライプニッツ−インスティトゥート フィア ノイエ マテリアーリエン ゲマインニュッツィヒ ゲゼルシャフト ミット ベシュレンクタ ハフトゥング | Composition for coating electrical conductors and method for preparing such a composition |
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