JP2640089B2 - Conductive rubber composition - Google Patents
Conductive rubber compositionInfo
- Publication number
- JP2640089B2 JP2640089B2 JP6298793A JP29879394A JP2640089B2 JP 2640089 B2 JP2640089 B2 JP 2640089B2 JP 6298793 A JP6298793 A JP 6298793A JP 29879394 A JP29879394 A JP 29879394A JP 2640089 B2 JP2640089 B2 JP 2640089B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- weight
- rubber composition
- conductive rubber
- compression set
- 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 - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、押出成形性に優れ、か
つ圧縮永久歪特性に優れた導電性ゴム組成物に関するも
のであると共に、また、押出成形性に優れ、かつ圧縮永
久歪特性に優れた電力ケーブル端末、接続部用導電性ゴ
ム組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive rubber composition having excellent extrusion moldability and compression set characteristics, and also has excellent extrusion moldability and compression set characteristics. The present invention relates to an excellent power cable terminal and a conductive rubber composition for a connection portion.
【０００２】[0002]
【従来技術および発明が解決しようとする課題】一般に
中高圧又は高圧の電力ケーブルの接続部又は端末部に
は、半導電性ゴム層とゴム絶縁層とを一体に成形したゴ
ムモールド部品が用いられている。このモールド部品に
用いられる半導電性ゴム組成物としては、通常耐熱性、
耐候性、耐水性等に優れたエチレン−プロピレン系ゴム
を主体とし、これに導電性のカーボンブラックを多量に
配合した組成物が用いられている。2. Description of the Related Art Generally, a rubber molded part in which a semiconductive rubber layer and a rubber insulating layer are integrally formed is used for a connection portion or a terminal portion of a medium-voltage or high-voltage power cable. ing. As a semiconductive rubber composition used for this molded part, usually, heat resistance,
A composition mainly composed of an ethylene-propylene rubber excellent in weather resistance, water resistance and the like, and containing a large amount of conductive carbon black in the rubber is used.
【０００３】上記半導電性ゴムの特性としては体積抵抗
率が１×１０2 Ω・ｃｍ以下の如く高度の導電性を有す
ることが必要であり、そのためには前記のエチレン−プ
ロピレン系ゴムに多量の導電性物質を添加しなければな
らない。しかしながら、導電性物質を多量に配合すると
粘度が大幅に上昇し組成物の混練作業、カレンダーロー
ルによるシーティング作業或いは押出、射出成形作業等
において、加工性が著しく低下するという問題があっ
た。As a characteristic of the semiconductive rubber, it is necessary that the semiconductive rubber has a high conductivity such as a volume resistivity of 1 × 10 2 Ω · cm or less. Must be added. However, when a large amount of a conductive substance is blended, the viscosity is greatly increased, and there has been a problem that workability is significantly reduced in a kneading operation of a composition, a sheeting operation using a calendar roll, an extrusion operation, an injection molding operation, and the like.
【０００４】これら問題を解決するために、従来多量の
プロセスオイルを添加した組成物が用いられているが、
プロセスオイルを多量に添加した組成物を前記ゴムモー
ルド部品として用いた場合、これが直接接触する他のゴ
ムモールド部品にプロセスオイルが移行して、その接触
面における界面の嵌合性の低下により電気絶縁性能が低
下する問題があった。また、多量のプロセスオイルの添
加は、本来、プロセスオイルが電気絶縁性であるため、
導電性の低下を引き起こすという問題、さらには圧縮永
久歪特性を低下せしめるという問題があった。In order to solve these problems, compositions containing a large amount of process oil have been used.
When a composition to which a large amount of process oil is added is used as the rubber mold part, the process oil transfers to another rubber mold part with which it comes into direct contact, and the insulating property is reduced due to a decrease in the fitting property of the interface at the contact surface. There was a problem that performance deteriorated. Also, the addition of a large amount of process oil is inherently process oil is electrically insulating,
There has been a problem of causing a decrease in conductivity, and further a problem of reducing compression set characteristics.
【０００５】プロセスオイルを多量添加することなく加
工性を改善するために、エチレン−プロピレン系ゴム１
００重量部に対し導電性カーボンブラック１０〜４０重
量部及び薄状化黒鉛３０〜１００重量部を夫々混和した
組成物が提案され、薄状化黒鉛の具体例として日本黒鉛
工業（株）ＥＸＰ−Ｐ（粒度範囲１００〜６００μｍ）
が例示されている（特開平５−２７１４９４）。しかし
ながら、上記組成物では圧縮永久歪特性の点で問題があ
った。すなわち、圧縮永久歪率が大きい組成物を用いた
場合、ゴムモールド部品の界面嵌合性低下による接続
部、端末部の絶縁性能の低下を招き易いという問題があ
った。したがって電力ケーブルの接続部品や端末部品等
のゴムモールド部品に用いられる組成物は、長期間の運
転中、前記の界面嵌合性の観点から圧縮永久歪特性に優
れることが必要である。[0005] In order to improve processability without adding a large amount of process oil, ethylene-propylene rubber 1
A composition in which 10 to 40 parts by weight of conductive carbon black and 30 to 100 parts by weight of thinned graphite are mixed with each other for 00 parts by weight has been proposed. As a specific example of the thinned graphite, Nippon Graphite Industry Co., Ltd. EXP- P (particle size range 100-600 μm)
(Japanese Patent Laid-Open No. 5-271494). However, the above composition has a problem in terms of compression set characteristics. That is, when a composition having a large compression set is used, there is a problem that the insulation performance of the connection portion and the terminal portion is liable to be reduced due to a decrease in the interface fitting property of the rubber mold component. Therefore, it is necessary that the composition used for rubber molded parts such as connection parts and terminal parts of power cables have excellent compression set characteristics from the viewpoint of the interface fitting property during long-term operation.
【０００６】本発明はプロセスオイルの多量添加なしに
射出、押出成形性を改善し、かつ十分な導電性および圧
縮永久歪特性に優れた導電性ゴム組成物を提供すること
を目的としたものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive rubber composition which improves injection and extrusion moldability without adding a large amount of process oil, and has sufficient conductivity and excellent compression set characteristics. is there.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、エチレン
−プロピレン系ゴム１００重量部に対して、導電性カー
ボンブラック１０〜１００重量部及び平均粒径０．１〜
１０μｍの黒鉛粉末３〜２５重量部をそれぞれ混和する
ことで上記課題を解決するに至った。Means for Solving the Problems The present inventors, based on 100 parts by weight of ethylene-propylene rubber, have 10 to 100 parts by weight of conductive carbon black and an average particle diameter of 0.1 to 100 parts by weight.
The above problem has been solved by mixing 3 to 25 parts by weight of 10 μm graphite powder.
【０００８】次に本発明の導電性ゴム組成物について詳
細に説明する 本発明で用いるエチレン−プロピレン系ゴムとしては、
エチレン−プロピレン共重合体、エチレン−プロピレン
−ジエン重合体等を用いることができるが、好ましくは
架橋速度及び架橋度の点からエチレン−プロピレン−ジ
エン重合体を用いる。ジエン成分としてはジシクロペン
タジエン、エチリデンノルボーネン、１，４−ヘキサジ
エン等が挙げられる。さらにはエチレン含量が６０重量
％以下のものが圧縮永久歪特性の観点から好ましく、具
体的には三井石油化学工業社製ＥＰＴ−４０４５Ｈ（エ
チレン含量５６重量％）、ＥＰＴ−４０２１Ｈ（エチレ
ン含量５３重量％）、ＥＰＴ−１０３５Ｈ（エチレン含
量５９重量％）等が挙げられる。Next, the conductive rubber composition of the present invention will be described in detail. As the ethylene-propylene rubber used in the present invention,
Ethylene-propylene copolymers, ethylene-propylene-diene polymers and the like can be used, but ethylene-propylene-diene polymers are preferably used in view of the crosslinking speed and the degree of crosslinking. Examples of the diene component include dicyclopentadiene, ethylidene norbornene, and 1,4-hexadiene. Further, those having an ethylene content of 60% by weight or less are preferable from the viewpoint of compression set characteristics, and specifically, EPT-4045H (ethylene content: 56% by weight) and EPT-4021H (ethylene content: 53% by weight, manufactured by Mitsui Petrochemical Industries, Ltd.) %), EPT-1035H (ethylene content 59% by weight) and the like.
【０００９】本発明で用いる導電性カーボンブラックと
しては公知の導電性カーボンブラックを適用できるが、
導電性の点から好ましくはアセチレンブラック、ケッチ
ェンブラックである。具体的な導電性カーボンブラック
としては、電気化学工業社製デンカブラック粒状（アセ
チレンブラック）、三菱油化社製ケッチェンブラックＥ
Ｃ（ケッチェンブラック）等が挙げられる。導電性カー
ボンブラックの配合量は、エチレン−プロピレン系ゴム
１００重量部に対して１０〜１００重量部、導電性の点
から好ましくは２０〜８０重量部である。導電性カーボ
ンブラックの配合量が１０重量部未満では十分な導電性
が得られず、１００重量部を超えると成形性の著しい低
下と引張特性及び圧縮永久歪特性の低下を招くため好ま
しくない。As the conductive carbon black used in the present invention, a known conductive carbon black can be used.
From the viewpoint of conductivity, acetylene black and Ketjen black are preferred. Specific examples of conductive carbon black include Denka Black Granules (acetylene black) manufactured by Denki Kagaku Kogyo KK and Ketjen Black E manufactured by Mitsubishi Yuka.
C (Ketjen black) and the like. The compounding amount of the conductive carbon black is 10 to 100 parts by weight based on 100 parts by weight of the ethylene-propylene rubber, and preferably 20 to 80 parts by weight from the viewpoint of conductivity. If the amount of the conductive carbon black is less than 10 parts by weight, sufficient conductivity cannot be obtained. If the amount is more than 100 parts by weight, the moldability is remarkably reduced and the tensile properties and compression set properties are undesirably reduced.
【００１０】また、本発明で用いる黒鉛粉末としては、
鱗状黒鉛粉末、土状黒鉛粉末等が使用できるが、圧縮永
久歪特性の点から好ましくは土状黒鉛粉末であり、該黒
鉛粉末の平均粒径は０．１〜１０μｍ、圧縮永久歪特性
の点から好ましくは０．５〜５μｍである。平均粒径
０．１μｍ未満では材料の混練時に分散不良を生じやす
く、また１０μｍを超えると圧縮永久歪特性が低下する
傾向が著しくなり好ましくない。さらに導電性の観点か
ら灰分（不純物）が３％以下の高純度品を用いることが
好ましく、具体的には日本黒鉛工業社製ＡＣＰ−１００
０（平均粒径６．０μｍ 検鏡測定）、ＡＳＰ（平均粒
径２．０μｍ 検鏡測定）、ＡＰ（平均粒径２．５μｍ
検鏡測定）等が挙げられる。平均粒径０．１〜１０μ
ｍの黒鉛粉末の配合量は、エチレン−プロピレン系ゴム
１００重量部に対して３〜２５重量部、圧縮永久歪特性
及び押出成形性の観点から、好ましくは５〜２０重量部
である。黒鉛粉末の配合量が３重量部未満では押出、射
出成形性改良効果が不十分であり、２５重量部を超える
と圧縮永久歪特性が低下するため好ましくない。The graphite powder used in the present invention includes:
Scaly graphite powder, earthy graphite powder and the like can be used, but from the viewpoint of compression set properties, preferably earthy graphite powder, the average particle size of the graphite powder is 0.1 to 10 μm, and the point of compression set properties. From 0.5 to 5 μm. If the average particle size is less than 0.1 μm, poor dispersion is likely to occur during kneading of the materials. If the average particle size exceeds 10 μm, the compression set characteristic tends to decrease significantly, which is not preferable. Further, from the viewpoint of conductivity, it is preferable to use a high-purity product having an ash content (impurity) of 3% or less, and specifically, ACP-100 manufactured by Nippon Graphite Industry Co., Ltd.
0 (mean particle size 6.0 μm microscopic measurement), ASP (mean particle size 2.0 μm microscopic measurement), AP (average particle size 2.5 μm
Spectroscopic measurement). Average particle size 0.1-10μ
The amount of the graphite powder m is 3 to 25 parts by weight based on 100 parts by weight of the ethylene-propylene rubber, and preferably 5 to 20 parts by weight from the viewpoint of compression set characteristics and extrusion moldability. If the compounding amount of the graphite powder is less than 3 parts by weight, the effect of improving extrusion and injection moldability is insufficient, and if it exceeds 25 parts by weight, compression set characteristics are undesirably deteriorated.
【００１１】本発明の導電性ゴム組成物は架橋剤等を添
加して架橋することが好ましい。本発明に用いられる架
橋剤は、耐熱性の観点から有機過酸化物が好適であり、
通常の架橋に使用されるものであれば特に制限はなく、
具体的には、三井石油化学工業社製ＤＣＰ（ジクミルパ
ーオキサイド）、日本油脂社製パーヘキサ２５Ｂ（２，
５−ジメチル−２，５−ジ（ターシャルブチルパーオキ
シ）ヘキサン）、パーヘキシン２５Ｂ（２，５−ジメチ
ル−２，５−ジ（ターシャルブチルパーオキシ）ヘキシ
ン−３）等が挙げられる。上記架橋剤の添加量はエチレ
ン−プロピレン系ゴム１００重量部に対して０．５〜５
重量部が好適である。添加量が０．５重量部未満では圧
縮永久歪特性改善効果が低下する傾向にあり、５重量部
を超えると引張特性の伸びが低下する傾向にある。The conductive rubber composition of the present invention is preferably crosslinked by adding a crosslinking agent or the like. The crosslinking agent used in the present invention is preferably an organic peroxide from the viewpoint of heat resistance,
There is no particular limitation as long as it is used for ordinary crosslinking,
Specifically, DCP (dicumyl peroxide) manufactured by Mitsui Petrochemical Industries, Ltd., and Perhexa 25B (2, manufactured by NOF Corporation)
5-dimethyl-2,5-di (tert-butylperoxy) hexane), perhexin 25B (2,5-dimethyl-2,5-di (tert-butylperoxy) hexyne-3) and the like. The amount of the crosslinking agent to be added is 0.5 to 5 parts by weight based on 100 parts by weight of the ethylene-propylene rubber.
Parts by weight are preferred. If the amount is less than 0.5 part by weight, the effect of improving the compression set properties tends to decrease, and if it exceeds 5 parts by weight, the elongation of the tensile properties tends to decrease.
【００１２】また、本発明においては圧縮永久歪特性を
向上させるために、架橋剤に加えてさらに架橋助剤を併
用することが好ましい。架橋助剤としては公知のものが
使用できるが、機械特性などの点から特にＮ，Ｎ′−ｍ
−フェニレンビスマレイミドおよび／またはトリアリル
イソシアヌレートが好ましく、具体的には日本化成社製
ＴＡＩＣ（トリアリルイソシアヌレート）、大内新興化
学工業社製バルノックＰＭ、川口化学工業社製アクター
ＰＢＭ−Ｒ、住友化学工業社製スミファインＢＭ（以
上、Ｎ，Ｎ′−ｍ−フェニレンビスマレイミド）等が挙
げられる。上記架橋助剤の添加量はエチレン−プロピレ
ン系ゴム１００重量部に対して０．３〜５重量部が好適
である。添加量が０．３重量部未満では圧縮永久歪特性
改善効果が低下する傾向にあり、５重量部を超えると引
張特性の伸びが低下する傾向にある。In the present invention, in order to improve the compression set characteristics, it is preferable to use a crosslinking aid in addition to the crosslinking agent. As the cross-linking aid, known ones can be used.
Phenylene bismaleimide and / or triallyl isocyanurate are preferred, specifically TAIC (triallyl isocyanurate) manufactured by Nippon Kasei Co., Ltd., Barnock PM manufactured by Ouchi Shinko Chemical Co., Ltd., Actor PBM-R manufactured by Kawaguchi Chemical Co., Ltd., SUMIFINE BM manufactured by Sumitomo Chemical Co., Ltd. (N, N'-m-phenylenebismaleimide) and the like. The addition amount of the crosslinking aid is preferably 0.3 to 5 parts by weight based on 100 parts by weight of the ethylene-propylene rubber. If the amount is less than 0.3 parts by weight, the effect of improving the compression set properties tends to decrease, and if it exceeds 5 parts by weight, the elongation of the tensile properties tends to decrease.
【００１３】本発明の導電性ゴム組成物には、その他必
要に応じて亜鉛華等の加硫促進助剤、フェノール系やア
ミン系等の老化防止剤、石油系プロセスオイル、ステア
リン酸等の加工助剤等の添加剤を配合してもよい。The conductive rubber composition of the present invention may further contain, if necessary, a vulcanization accelerator such as zinc white, an antioxidant such as a phenol or amine, a processing oil such as petroleum-based process oil, or stearic acid. An additive such as an auxiliary may be blended.
【００１４】本発明の導電性ゴム組成物は、例えば低
圧、中高圧、高圧等の電力ケーブルの端末、接続部部品
用材料として有用である。通常、本発明の導電性ゴム組
成物は通常の混練手段により混練され、次いで押出成
形、射出成形、圧縮成形、トランスファ成形等の代表的
なゴム成形法により加工される。The conductive rubber composition of the present invention is useful, for example, as a material for terminals and connecting parts of power cables of low pressure, medium pressure, high pressure and the like. Usually, the conductive rubber composition of the present invention is kneaded by ordinary kneading means, and then processed by a typical rubber molding method such as extrusion molding, injection molding, compression molding, and transfer molding.
【００１５】[0015]
（実施例１〜７、比較例１〜６）実施例、比較例の各組
成比及び評価結果を表１および表２に示した。なお、評
価方法は次の通りである。 ＜押出成形性＞表１および表２に示す各成分をロールミ
ルを用いて混練し、得られたコンパウンドを用いて押出
成形性の評価を行った。押出成形性は、前記コンパウン
ドのメルトフローレイトをＪＩＳ Ｋ７２１０に準拠し
て温度１２５℃、荷重１８．９ｋｇにて測定することに
より評価した。得られたメルトフローレイトが４ｃｃ／
１０分以上の場合を○、４ｃｃ／１０分未満を×とし
た。 ＜圧縮永久歪特性＞上記各コンパウンドをプレス加硫
（１６０℃、３０分間）後、ＪＩＳ Ｋ６３０１に準拠
し、熱処理条件１００℃、７０時間にて圧縮永久歪率を
測定した。得られた圧縮永久歪率が２０％以下を○、２
０％を超える場合を×とした。 ＜体積抵抗率＞更に、同一加硫条件下で作成した１ｍｍ
厚の加硫シートを用いて、ＡＳＴＭＤ９９１に準拠し体
積抵抗率の測定を行った。得られた体積抵抗率が１．０
×１０2 Ω・ｃｍ以下を○、１．０×１０2 Ω・ｃｍを
超える場合を×とした。(Examples 1 to 7, Comparative Examples 1 to 6) Tables 1 and 2 show the respective composition ratios and evaluation results of the examples and comparative examples. The evaluation method is as follows. <Extrusion moldability> The components shown in Tables 1 and 2 were kneaded using a roll mill, and the extrudability was evaluated using the obtained compound. The extrudability was evaluated by measuring the melt flow rate of the compound at a temperature of 125 ° C. and a load of 18.9 kg in accordance with JIS K7210. The resulting melt flow rate is 4 cc /
A case of 10 minutes or more was evaluated as ○, and a case of less than 4 cc / 10 minutes was evaluated as ×. <Compression Permanent Strain Characteristics> After press vulcanization of each of the above compounds (160 ° C., 30 minutes), the compression set was measured at 100 ° C. for 70 hours under heat treatment conditions in accordance with JIS K6301. When the obtained compression set is 20% or less,
The case where it exceeded 0% was evaluated as x. <Volume resistivity> Furthermore, 1 mm prepared under the same vulcanization conditions
Using a thick vulcanized sheet, the volume resistivity was measured according to ASTM D991. The obtained volume resistivity is 1.0
× 10 2 Ω · cm or less ○, and as × when it exceeds 1.0 × 10 2 Ω · cm.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【表２】 [Table 2]
【００１８】[0018]
【効果】本発明における導電性ゴム組成物は、プロセス
オイルの多量添加なしに射出、押出成形性が改善でき、
かつ導電性と圧縮永久歪特性に優れるため、低圧、中高
圧、高圧等の電力ケーブルの端末部または接続部部品用
材料として非常に有用である。The conductive rubber composition of the present invention can improve injection and extrusion moldability without adding a large amount of process oil,
In addition, since it has excellent conductivity and compression set characteristics, it is very useful as a material for terminal parts or connection parts of power cables of low pressure, medium pressure, high pressure, and the like.
Claims (3)
部に対して、導電性カーボンブラック１０〜１００重量
部、及び平均粒径０．１〜１０μｍの黒鉛粉末３〜２５
重量部を配合してなることを特徴とする導電性ゴム組成
物。1 to 100 parts by weight of ethylene-propylene rubber, 10 to 100 parts by weight of conductive carbon black, and 3 to 25 graphite powder having an average particle size of 0.1 to 10 μm.
A conductive rubber composition characterized by blending parts by weight.
部に対して、Ｎ，Ｎ′−ｍ−フェニレンビスマレイミド
および／またはトリアリルイソシアヌレート０．３〜５
重量部をさらに添加したことを特徴とする特許請求の範
囲第１項記載の導電性ゴム組成物。2. N, N'-m-phenylenebismaleimide and / or triallyl isocyanurate 0.3 to 5 parts by weight based on 100 parts by weight of ethylene-propylene rubber.
2. The conductive rubber composition according to claim 1, further comprising parts by weight.
の前記導電性ゴム組成物が電力ケーブル端末部用または
接続部用であることを特徴とする導電性ゴム組成物。3. The conductive rubber composition according to claim 1, wherein the conductive rubber composition is used for a power cable terminal portion or a connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6298793A JP2640089B2 (en) | 1994-11-07 | 1994-11-07 | Conductive rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6298793A JP2640089B2 (en) | 1994-11-07 | 1994-11-07 | Conductive rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08134294A JPH08134294A (en) | 1996-05-28 |
| JP2640089B2 true JP2640089B2 (en) | 1997-08-13 |
Family
ID=17864297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6298793A Expired - Fee Related JP2640089B2 (en) | 1994-11-07 | 1994-11-07 | Conductive rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2640089B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106964A (en) * | 2011-11-10 | 2013-05-15 | 袁玉君 | Elastic cable |
| JP2019214674A (en) * | 2018-06-13 | 2019-12-19 | Nok株式会社 | Acrylic rubber composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07247384A (en) * | 1994-03-10 | 1995-09-26 | Kuraray Plast Kk | Conductive foamable rubber composition, molding thereof and conductive rubber roll |
-
1994
- 1994-11-07 JP JP6298793A patent/JP2640089B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08134294A (en) | 1996-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1366498B1 (en) | Semiconducting shield compositions | |
| EP1984445B1 (en) | Semiconductive compositions | |
| AU2002240535A1 (en) | Semiconducting shield compositions | |
| JP2000357419A (en) | Semiconductive shield for cable | |
| JPH02102263A (en) | Conductive silicone rubber composition and cured product | |
| US6706791B2 (en) | Cable semiconductive shield compositions | |
| US6525119B2 (en) | Cable semiconductive shield compositions | |
| CN109608866B (en) | Heat-conducting thermoplastic dynamic vulcanized silicone rubber and preparation method thereof | |
| CN109456542A (en) | A kind of rubber insulation material | |
| KR20200011947A (en) | Reactive Formulation of Ethylene Vinyl Acetate | |
| CN110938274B (en) | Silane cross-linked semiconductive shielding material and preparation method and application thereof | |
| US11091614B2 (en) | Multiphase conductive polymer composite compositions | |
| JP2640089B2 (en) | Conductive rubber composition | |
| CA1147088A (en) | Flame retardant polymeric materials | |
| JPS59108051A (en) | Non-bridged elastomeric thermoplastic composition for use oflow voltage insulator | |
| KR102354984B1 (en) | Tracking resistant insulation composition and high voltage cable comprising the same | |
| US4806424A (en) | Electrical conductor insulated with insulating and jacketing material having improved resistance to hot fluids and gases | |
| JP3442492B2 (en) | Semiconductive rubber composition | |
| JP3184720B2 (en) | Ethylene / propylene rubber composition | |
| JP3812064B2 (en) | Fluorine-containing elastomer composition | |
| JPH1160846A (en) | Insulating rubber composition | |
| JPS6215963B2 (en) | ||
| WO2022180939A1 (en) | Resin composition, power cable, and method for producing power cable | |
| JP2863865B2 (en) | Heat resistant elastomer composition | |
| KR100291669B1 (en) | A semiconductive power cable shield |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090502 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100502 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |